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Glasshouses and greenhouses

"For good health eat less from a box and more from your greenhouse"

Harrisville Primary School Greenhouse Donation. More »
 

A Bit of History

Those of you who know us from the early days know that we initially began Hunkin Garden Products Ltd selling domestic glasshouses imported from Halls in the UK. We stopped selling glasshouses some time ago because we could no longer get glass at a realistic price from NZ suppliers. We looked at importing our own glass, and while we could have done this, freighting glass around the country without breakage seemed impossible. Time has moved on and the little girl in the purple gumboots has a Masters degree in Science. The little boy is now working in the computer industry as a IT engineer for a company in Auckland.

 

After 24 years we now have our own range of greenhouses. As my father, a retired fitter turner says "there is no substitute for experience" and we have used our experience to design a stronger, higher side-walled greenhouse using 6mm-twin wall polycarbonate. All the benefits of a high side wall, criss -cross bracing and downpipes are included in the price, not an added extra. We have aimed to provide a very functional strong greenhouse at a realistic price so you can enjoy your gardening without breaking the bank.

So what are the benefits or polycarbonate over glass? It is a "no brainer" really.

Safety has got to be number one, especially if there are young children playing in your backyard. Polycarbonate will not shatter like 3mm float glass often used on domestic glasshouses. The safer nature of polycarbonate makes our greenhouses ideal for schools.

Lightweight so we can supply much bigger pieces, which means glazing, for want of a better word, is much easier. Instead of 106 panes of glass that we used to have in a 12 x 8 greenhouse for instance, we now have 38 pre-cut polycarbonate sheets in our Titan 129 EB, meaning fewer air gaps to leak air and less fiddling around fitting little panes. Your greenhouse is assembled in no time at all.

Diffused light every gardener knows plants need light to grow. It is a vital part of the photosynthesis process. What is not so commonly known is that plants often grow better under diffused light because light tends to be scattered and leaves pick up light from all directions. There have been claims of 20% to 30% increases in growth with diffused light. Direct light on the other hand can often cause burning of the leaves, which reduces growth. The twin-wall polycarbonate diffuses the light so your plants are unlikely to get burnt in bright sunlight. No need to paint the outside to prevent scorching or erecting shade cloth in summer.

Energy saving - The more heat the greenhouse retains, the better, especially if you want to heat the greenhouse. (See our comparative table below in the frequently asked questions). There is also less condensation, and little or no dripping from overhead.

Our Guarantee

Every greenhouse comes with a 10-year guarantee on the aluminium frame against faulty workmanship, much more than you will receive from most other manufacturers. The polycarbonate is guaranteed in N.Z. for 7 years against breakdown (going brittle) by U.V degradation. If U.V breakdown occurs, and is confirmed by the manufacture's sample analysis, a pro rata replacement credit will be allowed. A credit will be issued, based on original invoiced value, for the unused period of the warranty. Warranty is to the original purchaser of the greenhouse. The polycarbonate must be installed with the UV coated side to the outside (facing the sun) otherwise the warranty is void.

Guarantees of course are only as good as the company behind them and only have value as long as the company is still in business. We have been in business 24 years, so you can be assured we are here to stay.

By purchasing one of our greenhouses you are making a long-term investment that will bring you many years of enjoyment and service.

With unbeatable durability, safety, insulation and pricing, what are you waiting for?

Frequently asked questions

What is polycarbonate?
Polycarbonate belongs to the group of plastics called thermoplastic polymers. It is not to be confused with acrylic, which is a much cheaper and inferior product. Polycarbonate is widely used in industry because it has excellent temperature resistance (125 Celsius to minus 40 Celsius), impact resistance (250 times stronger than glass, virtually unbreakable) and optical properties (80% of visible light, glass transmits 89%) which makes it ideal for greenhouse applications. It is non-toxic, stain resistant and weighs six times less than glass.

The use for Polycarbonate is almost endless. Here are a few applications. Bulletproof windows as used in banks, safety glasses, crash helmets and prescription glass lenses. CDs and DVDs are made from polycarbonate. Ever tried to break one?

Will the polycarbonate get brittle after long exposure to sunlight like other plastics?
Some of our competitors make the broad statement that Chinese made Polycarbonate is poor quality because it is made of recycled material. This may well be the case with very cheap greenhouses, but not with ours. Our polycarbonate is extruded in China using virgin materials supplied by Bayer in Germany. The polycarbonate resin used in our twin wall sheets is Bayer Makrolon® 1243, also called Bayer Makrolon ET3127. When the sheet is extruded a layer of Makrolon® DP1-1852UV concentrate is also co-extruded with it. The Makrolon® DP1-1852UV is not like a layer of paint, it is amalgamated with the base material, so it is part of it and can't flake off. The UV layer absorbs the UV rays, thus protecting the material underneath. This is the side that goes towards the sun. Our polycarbonate has ISO 9001:2000 QS authentation.

We have had our polycarbonate under field test for 6 years with no cracking. There are numerous greenhouses throughout Australia (UV similar to ours) using the same polycarbonate supplier as us.

What is horticultural glass?
Horticultural Glass is made by the rolled glass process and is the cheapest form or glass. A continuous stream of molten glass is forced between water-cooled rollers to get the correct thickness. Horticultural glass often has optical imperfections and sometimes depending on the source, is not as clear as window glass (sometimes a bit green).

When horticultural glass breaks it splinters leaving sharp jagged edges which must be handled with great care. Care must be exercised when handling glass and you should always place a gloved hand under the glass so it can't slip. If glass ever shatters in your garden or on the lawn, that is the last time you will ever be able to run around with bare feet, because you will never get rid of all the glass splinters.

So what's the big deal about insulation?
Greenhouses work by trapping the heat from the sun. If the heat escapes easily through the glazing or air gaps then the whole point of having a greenhouse is lost. The best greenhouses are the ones that can hold the heat for as long as possible. The polycarbonate sheets fit inside the frames so there are no air leaks. These greenhouses are the best-sealed greenhouses I have seen and rivals a tunnel house that has a completely welded skin.

What is 6mm-twin wall polycarbonate?
Two thin sheets of polycarbonate are separated by a 4.5mm still air gap, much like double insulation used on windows in colder climates. The construction is like the coreflute used in plastic real estate signs.

Won't water and bugs get between the twin wall?
The polycarbonate fits inside the frames so bugs and water can't get in.

Doesn't glass insulate?
It does to a point, because infra red (heat) does not transmit through glass very easily. Well that's the theory. However we all know that in order to keep your house warm in winter you pull thermal drapes across your windows, so it is not that good.

Insulation factors R ratings for different greenhouse materials.
Most people will be familiar with the R rating given for insulation. Fibreglass insulation for instance ranges from R1.6 up to R 3.6 and more. The higher the "R" number, the better the insulation. The table shows some comparisons.

Material Insulating "R" number
6mm twin wall polycarbonate 1.5
3mm horticultural glass 0.95
Polythene plastic as used in tunnel houses 0.83

From this table you can see twin wall polycarbonate insulates 50% better than glass traditional 3mm glass and about 72% better than plastic. In a greenhouse situation the use of plastic is a bit better in a tunnel house because it is normally welded so it is quite airtight (no draughts) and glass is a little worse in a glasshouse (more draughts) because of more joins (smaller panes) and unavoidable air leaks. Our greenhouses are so well sealed they rival the tunnel house welded skin for air tightness.

 
  Tomato planting tip. When planting your tomato take off a few of the bottom leaves and lay the stem in a small trench and cover. The stem will very rapidly sprout roots resulting in the plant growing a massive root system to power the plant. You can also remove laterals, pot them up and cover with a plastic bag to get more plants.

What is best for greenhouse frames, aluminium or steel?
The only reason manufacturers use steel for frames in domestic greenhouses is price. These greenhouses are often made from electroplated galvanised sheet steel that has been cut and folded or rolled to shape. The protection layer is very thin, and the cut edges of course are not galvanised, so though the frames will last quite a long time, eventually they will rust. The sheet steel is also quite thin, so where it has been cut there is often a very sharp edge. The only disadvantage with aluminium is cost. It is a more expensive metal and dies have to be made in order to extrude the product to shape. The frames are much thicker and in most cases have rounded edges from the extrusion process. Aluminium has a thin protective oxide layer on the outside that forms immediately the moment the aluminium is exposed to air. Any damage is instantly sealed off with an oxide layer. Aluminium never rusts and provided compatible materials are used with it, there is virtually no corrosion. Aluminium will last a lifetime, and with the rising cost of raw materials it is false economy to purchase a greenhouse with a steel frame that you will eventually have to replace. We have a 10 year limited warranty on the frame. It is quite conceivable that a steel-framed greenhouse will have started rusting before our guarantee has run out.

Before making a decision to purchase a greenhouse look very closely at the construction so you can make educated comparisons.

 

This monster tomato (720gms) was started in our greenhouse for an early start and then transferred to the garden. Tests have shown that while all tomatoes contain lycopene, a very good antioxidant with many health benefits, it is the yellow / orange ones that have lycopene that can be absorbed when eaten raw. Red tomatoes have to be cooked before we absorb it in any great amounts. Apparently lycopene has shown some promise in protecting against prostate cancer. Just imagine how much we might be able to improve the health of the nation by simply swapping to orange tomatoes in our salad. Bristol seeds have a large choice of varieties and an article on lycopene.

Follow the link to their website. www.bristol.co.nz.

 


New Titan EB series - Better, stronger, wider

The Titan series are our newly designed greenhouses that we believe are even stronger than our previous series. We have combined a clip and special polycarbonate glue/sealer system in the construction of the Titans. Other systems of fixing polycarbonate to greenhouses have their problems. A clipped system can be prone to panel blow-outs, but they are easy to put back. The insertion system is not a complete cure for blow-outs, as panels amazingly can still blow out in very high winds. The problem with the inserted system is that you have to partially de-construct the greenhouse frame to get the panels back in, and this can be very difficult.

New technology has meant there are now special glues/sealers for polycarbonate that can match the expansion characteristics of the panels. The result is a system that uses full length UV treated PVC capping to clip in the panels, backed up by special polycarbonate glue for added strength. The result is, not only do we have a very strong method of holding in the panels should you need to replace one, the greenhouse does not have to be pulled apart either. Even construction is easier and more relaxed. You can assemble the frame on one day and put the panels in the next. With an insert system once you start assembly you have to get it all done in a day, quite a stress with a large greenhouse.

There are lots of slogans out there, and here are a few: "Made for harsh NZ conditions", "By far the strongest and most durable greenhouse available on the New Zealand market", "NZ's most popular greenhouse" etc., with no evidence to support the claims. We have been selling greenhouses for 23 years, so have seen and heard it all. We have listed below the features and benefits of our greenhouses, so you, the customer, can decide for yourself.

Bracing is an important feature of our greenhouses. By nature, greenhouse frames are narrow so they do not shade the plants inside, so they are not as strong as if 100mm x 50mm timber framing were used. Fortunately, by bracing the aluminium framing, the strength is greatly increased. You can try this simple experiment for yourself:

Take two matchsticks and glue them at a right angles to each other. If you push on them they are easily pushed out of shape (Figure 1). Now do the same again and put in a diagonal (Figure 2). This time you will notice they are much harder to push out of shape, in fact the matches may break before they move. This is the principle of bracing we use in our greenhouses and the one engineers have been using in construction for centuries. It costs a bit more in materials and increases the construction time, but the resulting huge increase in strength is well worth it.

Now the EB series with our new criss -cross bracing, even stronger!

Features and benefits of our greenhouse construction

Powder Coating

  • Strong powder coated extruded aluminium base for durability. Lasts longer when in contact with the ground.
  • The frame is powder coated a deep British green colour, (a more appealing colour to the eye of our western culture) so it looks a lot better in your garden.

The Base and Ground Stakes, included in the price, not an extra.

  • Powder coated bases are supplied as part of the kitset to make it easy to set up. They can be mounted directly on flat soil, timber or a concrete slab.
  • If you are mounting on the ground we supply multiple ground stakes, not just stakes for the corners. The stakes are concreted in with a bit of undercut. This makes the greenhouse far more secure in high winds.
  • The frame is attached to the base via concreted-in ground stakes and additional fasteners to make sure the greenhouse is secured firmly to the ground. The greenhouse is more stable.
  • TIP. If pouring a slab put a bit of black oxide in the top layer as you float off. It will enable the slab to absorb more heat during the day so the heat can be released during the night. It won't keep you greenhouse warm, but it could be the difference between the frost getting in or not. Dynabolt the base to the slab with stainless steel dynabolts (dynabolts are not supplied in the kit)

Bracing

  • The frame has side wall criss-cross diagonal braces from the corners at eave height to the base, not partway down the corner profiles as in some greenhouses. This gives the frame greater stability (note the matchstick experiment above).
  • The frame has roof diagonal bracing extending from the eave corners to the roof ridge of the greenhouse in all four corners. This gives extra stability to the roof part of the frame, especially when the wind is blowing on the gable ends. Many greenhouses remarkably don't have this!
  • Eave braces between the side walls and the roof beams, which strengthens the greenhouse. (Wider Titan 9xx models only)
  • Apex cross braces in the roof of the greenhouse which results in greater roof strength. (Wider Titan 9xx models only)

Double Back Wall Beam

Double door models feature double back wall beam across the plain gable end at eave height to reduce the flex in the back wall. This results in greater wind resistance on the plain gable end.

Polycarbonate

  • Polycarbonate made from virgin materials supplied by Bayer. Durable proven product. ISO 09001:2000
  • Polycarbonate is glued and clipped into position. Glued panels, once set in place, act like sheet bracing (a technique used in houses) and they add extra strength to the greenhouse. While each glue joint is not particularly strong, all the panels combined make a substantial contribution. Much like trying to break a lot of matchsticks all bound together.
  • Field tested for 6 years in the hot Melbourne sun.
  • Replacing polycarbonate can be done without disassembly of the frame a panel at a time. Insert systems require some disassembly.

Roof Vents

We usually have more roof vents than other brands. 2 roof vents in our Titan 7 series with a louvre in the back wall, 4 roof vents in the Titan 912 and the Titan 914 greenhouse. The Titan 914 also has 2 louvres in the side walls. Extra ventilation results in a cooler greenhouse and better plant health. Optional additional louvres are available for the walls and gable ends if you feel you need even more.

High Side Walls

High side walls as standard, not an optional expensive extra. You can grow taller plants right up to the sides. More air volume means more gradual temperature changes, resulting in less stress on the plants.

Width

Our greenhouses are wider than most. You will be surprised how much extra usable space this gives you, especially if you have a path down the middle of your greenhouse and garden at the sides.

Downpipes

Downpipes as standard, not an extra. Collect rainwater off the roof of your greenhouse into a water barrel. We don't supplly barrels as the freight makes them uneconomic to ship. Farming stores like RD1, Farmlands, PGG Wrightson etc have barrels. Experienced gardeners know there is no substitute for rain water, it seems to have magical growing qualities compared to urban treated tap water. Our optional solar powered irrigation system can use this water to water your greenhouse plants automatically. Irrigatia Solar powered irrigation system

It has been said that frogs are a very good indicator of heathly surroundings. i.e. no sprays or toxic substances. I discovered this frog in the greenhouse sunning itself on one of my bromeliads. I give the frog a place to winter and it keeps the bugs down in my greenhouse. A win win, just how it should be. A Pineapple grown in our own greenhouse. Completely diffferent to the ones you buy in your local shop. Ripened naturally in the sun, not picked green to ripen in the hold of a ship. So sweet!

The fine print

While our greenhouses are engineered to resist the elements we give no guarantees as to wind and storm resistance. The 1:100 year storm now seems to be lately a two a year storm in some parts of the country so our advice is to shelter your greenhouse from strong winds. No domestic greenhouse will withstand gale force winds (even large commercial greenhouses suffer damage) so be realistic and take precautions. When a 20 foot shipping container weighing 2.2 tonnes empty is flipped over on a Wellington wharf, do you really think a greenhouse will still be standing if exposed to the same wind? If a supplier says theirs will, ask for it in writing. That piece of paper may come in handy later on when you make your claim against them. We recommend semi permeable shelter. Solid shelter can actually make it worse. Appropriate shelter has some real benefits apart from protecting the greenhouse.

It provides a sheltered area in which you can harden of plants before planting out.
It reduces the wind chill factor which means your greenhouse retains heat better.

The effects of shelter

Many people think because they have a house or shed sheltering their greenhouse they are well sheltered, but often the wind turbulence may be worse. There is a very good website that explains the effects of windbreaks in very simple terms http://weathersolve.com/how-windbreaks-work/

Below are a few clips from this website if you don't want to look it up. You can see from the diagrams how a porous windbreak is so much better.



While the graph is in imperial units this shows how effective good shelter can be. To achieve the purple zone, 20% to 30% of the open wind speed, you ideally need a porous shelter around 3m high and your greenhouse around 3m from the shelter. This means that according to the chart, a 170km wind (Hurricane force) would be reduced to around 50km/hr. and a 100km/hr. (gale force / violent storm) to 30km/hr.


Freight:
With a truck being charged by the kilometre or at an hourly rate, making a delivery for items to the door, especially rural areas, can get expensive. Picking up freight from a depot is the best and easiest option. If you do not have the means to pick up we can have your greenhouse delivered right to your door. Our standard freight is to a depot or town / city address. If you are rural please call 0800 14 48 65 or email sales@hunkin.co.nz for a quote telling us your delivery details.

Greenhouses consist of three boxes with weights per box up to 63kg for the Titan 914 greenhouse frame. The major problem with transporting greenhouses is the length. The base and frame cartons are about 100mm longer than the greenhouse you order. Eg. a Titan 912 at 2.776 metres long has a base and frame carton approx. 2.88m long.

Follow the link to find a depot near you. www.pbt.com/locations.html

NEW Our new Titan EB series now has a new design feature,"criss-cross" bracing, so the greenhouse is braced in both directions. This is a much stronger design because there is always a brace in tension. This is a bracing system often used in Kiwi fruit orchards, especially in soft ground. If you watch the news you will see a lot of the earthquake proofing going on in the country uses criss-cross bracing.


How it works
In order for the shape to change to a parallelogram from either direction, either A or B, depending on the direction of the wind, has to snap. One brace is always in tension, the other in compression.


Titan 914 EB frame with criss-cross bracing

 

To the right is an example of the criss-cross bracing design. The angles are as close to the optimum angle of 45 degrees as possible. We believe no other domestic greenhouse comes close to this in bracing design.

 

Please note: We pride ourselves on our after sales service and hold an extensive range of spare parts for our greenhouses. We also hold spare polycarbonate for our customers.

Sorry we do not supply polycarbonate or parts for other supplier's greenhouses, you need to go back to them for after sales service, that's if you can find them!.

A powder coated aluminium base is supplied with every greenhouse and extension. Most greenhouse suppliers only give you ground stakes for the corners, we have additional stakes down the sides and across the ends as standard. If your greenhouse is not anchored to the ground, then it has no hope in high winds.

Titan 79 EB (approx 9 feet long x 7 feet wide)

Criss cross bracing system
  • 2849mm L x 2125mmW x 2330mmH. Eave height with base 1653mm. High eaves standard, not an extra!
  • 1.3mm thick aluminium extrusions. Heavier profiles for more strength.
  • Clip and silicone sealant system for fixing polycarbonate.
  • Glued and clipped polycarbonate act as sheet bracing
  • The polycarbonate glue is supplied
  • 19mm x 19mm x 1.6mm thick angle bracing
  • Braces in eaves and criss-cross bacing in the side walls.
  • Stainless steel nuts and bolts
  • PVC capping system
  • 100mm high powder coated aluminium..
  • 2 roof vents standard for better ventilation, with one louvre in the back wall, standard, not an extra!
  • Downpipes supplied with the greenhouse for collecting water off the roof, standard, not an extra!
  • 6mm twin walled polycarbonate
  • 10 year warranty on frame and 7 years polycarbonate
  • 2776mm L x 2125mmW x 2330mm extensions available to make a longer greenhouse. (It can be added at a later date)
  • Extensions are braced the same as the greenhouse
  • 2 roof vents in extensions

Available in powder coated dark green $1895
Freight Auckland suburbs excluding rural delivery $100, NI depot or town address $145, SI depot or town address $195.

If you prefer to transfer funds to our bank account instead of using a credit card please contact us with your name, address, phone number and what you wish to purchase and we will email you an invoice with our bank details.

Choose a product and destination:

Titan 7 Series Extension system (approx 9 feet long x 7 feet wide)

  • 2776mmLx2125mmWx 2330mmH.
  • Built to match the main greenhouse
  • 4 roof vents
  • All other specifications the same as the main greenhouse.

Available in powder coated dark green $1150
or plain aluminium mill finish $1019 for older models
Freight Auckland suburbs excluding rural delivery $80, NI depot or town address $135, SI depot or town address $185

If you prefer to transfer funds to our bank account instead of using a credit card please contact us with your name, address, phone number and what you wish to purchase and we will email you an invoice with our bank details.

Choose a product and destination:

If you order an extension with your greenhouse we will give you a quote on freight as it will probably be cheaper because we can combine the freight.

Titan 912 EB (approx 12 feet long x 9 feet wide)

  • 3543mmL x2751mm W x 2535mmH. Eave height with base 1653mm. High eaves standard, not an extra!
  • 1.3mm thick aluminium extrusions. Heavier profiles for more strength
  • Double door (1180mm wide entrance when open)
  • Clip and silicone sealant system for fixing polycarbonate.
  • Glued and clipped polycarbonate act as sheet bracing
  • The polycarbonate glue is supplied.
  • 19mm x 19mm x 1.6mm thick angle bracing
  • Braces in eaves and criss-cross bacing in the side walls. Please note the picture to the right shows only shows old diagonal bracing.
  • Braces in eaves and apex
  • Double extrusion across the back wall for extra strength.
  • Stainless steel nuts and bolts
  • PVC capping system
  • 100mm high powder coated aluminium base
  • 4 roof vents standard for better ventilation (twice as many as other brands)
  • Downpipes supplied with the greenhouse for collecting water off the roof, standard, not an extra!
  • 6mm twin walled polycarbonate
  • 10 year warranty on frame and 7 years polycarbonate
  • 2776mm L x 2751mm W 2535mm H extensions available to make a longer greenhouse. (It can be added at a later date)
  • Extensions are braced the same as the greenhouse
  • 4 roof vents in extensions

Available in powder coated dark green $2298

Freight Auckland suburbs excluding rural delivery $120, NI depot or town address $160, SI depot or town address $230

If you prefer to transfer funds to our bank account instead of using a credit card please contact us with your name, address, phone number and what you wish to purchase and we will email you an invoice with our bank details.

Choose a product and destination:

Titan 914 EB (approx 14 feet long x 9 feet wide)

Our new Titan 914 EB design features "criss-cross" bracing so the greenhouse is braced in both directions. This is a much stronger design because there is always a brace in tension. This is a bracing system often used in Kiwi fruit orchards, especially in soft ground.

Roof vents, though necessary, are the often the most vulnerable to wind damage so we have kept the number of roof vents to 4, but have included two side wall louvres for added convectional ventilation. These can be automated, just like the roof vents.

  • 4237mm L x 2751mm W x 2535mm H. Eave height with base 1653mm. Grow plants like tomatoes right up to the walls. High eaves standard, not an extra!
  • 1.3mm thick aluminium extrusions. Heavier profiles for more strength.
  • Powder coated aluminium base, no rust.
  • Double doors.(1180mm wide entrance when open)
  • Clip and silicone sealant system for fixing polycarbonate.
  • Glued and clipped polycarbonate act as sheet bracing.
  • Individual polycarbonate panels can be replaced without frame disassembly.
  • The polycarbonate glue is supplied.
  • Extra 19mm x 19mm x 1.6mm thick criss-cross angle bracing.
  • Braces in eaves and apex.
  • Double extrusion across the back wall for extra strength.
  • Stainless steel nuts and bolts.
  • PVC capping system.
  • 100mm high powder coated aluminium base included.
  • 4 roof vents and two louvres are standard for better ventilation (twice as many as other brands).
  • Downpipes supplied with the greenhouse for collecting water off the roof, standard, not an extra!
  • 6mm twin walled polycarbonate.
  • 2776mm L x 2751mm W 2535mm H extensions available to make a longer greenhouse. (It can be added at a later date)
  • 4 roof vents in extensions.

Available in powder coated dark green $2495

Freight Auckland suburbs excluding rural delivery $130, NI depot or town address$180, SI depot or town address $250

If you prefer to transfer funds to our bank account instead of using a credit card please contact us with your name, address, phone number and what you wish to purchase and we will email you an invoice with our bank details.

Choose a product and destination:

Titan 9 Series Extension system (approx 9 feet long x 9 feet wide)

  • 2776mmLx2751mmWx 2535mmH.
  • Built to match the main greenhouse
  • 4 roof vents
  • All other specifications the same as the main greenhouse.

Available in powder coated dark green $1258
or plain aluminium mill finish $1113.20 for older models
Freight Auckland suburbs excluding rural delivery $100, NI depot or town address $145, SI depot or town address $195

If you prefer to transfer funds to our bank account instead of using a credit card please contact us with your name, address, phone number and what you wish to purchase and we will email you an invoice with our bank details.

Choose a product and destination:

If you order an extension with your greenhouse ask for a quote on freight as it will probably be cheaper because we can combine the freight.

Accessories

Hanging brackets

These brackets are made of aluminium and can be attached to the framing of your greenhouse without disassembly using the stainless steel rhombus bolt supplied. There are many uses but a typical application is to hang a string from the bracket and wind a tomato up it for support.
Available in powder coated dark green $1.50, or plain aluminium mill finish $1.30
Postage $3.00 any number. Please note when you order the postage will be added for each item, however when we process your order you will only be charged one lot of postage. There will be no postage if ordered with a greenhouse.

Choose a product:

Aluminium shelf with stainless steel bolts

This shelf attaches to the walls of your greenhouse leaving the ground free and is available in powder coated dark green.

  • Size: 1388x625mm (L x W)
  • Height adjustable
  • Solid aluminium frame for easy assembly
  • 6 Aluminium slats.

Available in powder coated dark green $146.75

Postage NI $16.50 SI $26.00 (no freight if ordered with a greenhouse)

Choose a product and destination:

Aluminium 2 tier stepped staging

Two tier free standing staging to make maximum use of space and light

  • 1165L x 340/680W x 1050/500H (mm)
  • Solid aluminium frame for easy assembly
  • 9 Aluminium slats.

Available in powder coated dark green $225.40, or plain aluminium mill finish $205.40
Postage NI $16.50 SI $26.00 rural delivery an extra $6.50 (no freight if ordered with a greenhouse)

 

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Aluminium staging with plastic seed trays (included)

This staging is ideal for germinating seedlings. The 12 or 8 removable trays allow you to make maximum use of space. (picture is of 12 seed tray model)

  • 1010L x 405W x 998H (mm)
  • Solid aluminium frame for easy assembly
  • (3 tier) 12 seeds trays or (2 tier) 8 trays

Available in powder coated dark green 3 tier (12 seed trays) $115.40

2 tier (8 seed trays) $88.60, in dark green. Postage NI $16.50 SI $26.00 rural delivery an extra $6.50 (no freight if ordered with a greenhouse)

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NEW 3 Tier aluminium staging with twin wall PVC tongue and groove slats

This staging is ideal for pots, seed trays etc. The 3 shelves utilising a strong twin wall tongue and groove pvc construction allows you to make maximum use of space.

  • 890L x 400W x 1000H (mm)
  • Solid aluminium frame for easy assembly
  • Tongue and groove PVC slats
  • PVC is sterile and does not support plant disease

Available in powder coated dark green $175.40
Postage NI $16.50 SI $26.00 rural delivery an extra $6.50 (no freight if ordered with a greenhouse)

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Automatic vent opener (two spring)

Our automatic vent openers are a great accessory to add to you greenhouse, especially if you are working away from home. One of the first things you will notice with a greenhouse is how efficiently it can trap the heat. This is a good thing in winter, but as summer approaches it is very easy to have your greenhouse overheat if you don't have the vents open. The problem is you need to remember to open them, and if you work during the week this can become a bit of a chore. On those frosty days it is very important to close the vents in time otherwise all the heat gathered through the day is rapidly lost.

Fortunately there is a solution. You can install automatic vent openers on your greenhouse vents. These units require no electricity. The mechanism utilises a wax made of plant oils harmless to humans even if licked (though you might need to stock up on toilet rolls) that expands with heat. This expansion pushes a piston rod out of the cylinder that then opens the window. When the temperature falls, the wax retracts and the weight of the window together with the force of the opener's closing spring closes the window again. The opening temperature range is adjustable between 15 and 25 degrees Celsius.
The two spring design holds the lighter polycarbonate vents shut with more force than a single spring design improving their wind resistance.

Automatic vent opener $95 (no freight if ordered with a greenhouse)
Postage NI and SI $10 (NZ Post bag)

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Louvre

If you want extra ventilation then a louvre can be fitted to the plain end of the greenhouse to allow fresh air to enter (older models, not EB models). They are very effective when you have the doors open at the other end because this allows fresh air to pass through the greenhouse. Our louvre blades are made of twin wall polycarbonate and capped with aluminium for extra strength with no sharp edges. Louvres can be added at any time to your greenhouse, but it is much easier to install them when you first construct it. Please note on EB models the louvres will only fit the side wall of the greenhouse because the criss-cross bracing gets in the way. The Titan 914 EB has 2 louvres as standard in the side walls, the Titan 912 EB can have two fitted to the middle of the side walls either side. The Titan 79 EB has a louvre as standard in the end wall.

We felt it was better to sacrifice some positioning of the louvres for the extra criss-cross bracing.

Available in powder coated dark green $95, or plain aluminium mill finish $85 (no freight if ordered with a greenhouse)
Postage NI $10 SI $15

 

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Bayliss Automatic Louvre Opener

The Bayliss automatic Louvre Vent Opener made in the UK is designed to fit simply, neatly and unobtrusively to a greenhouse louvre vent. The unit operate without power along the same principles of our autovent openers.

It is temperature adjustable and can be set to start opening the louvres from 15 18°C with a maximum opening at approximately 30°C. It is supplied with a backplate enabling users to fit it to the holes in our louvre assemblies.

Please note. Unit to the right is a stock picture of the auto opener attached to a louvre with glass blades, we use polycarbonate.

Some drilling is required to remove two rivets and a screwdriver is needed to remove the manual arm.

Auto louvre opener $65.00 if ordered with louvre

 

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Yellow Sticky Traps

A sticky end to Whitefly, Aphids, thrips and other flying insects

Yellow plastic, coated both sides with non-toxic glue. These are primarily used for insect pest monitoring and insect control in the greenhouse and conservatory. They may be used to time the introduction of biological control predators.Safe and effective. Simply hang them up in your greenhouses near your plants. We have tested these outside and while their life is shorter, they are still effective. Lifespan outside is dependent on the weather, but through sun and rain ours have lasted at least three weeks. While they don't trap all the bugs, every one stuck on the trap is one less in your garden and if the bug is a female full of eggs, potentially thousands have been prevented.

Generous size 250mm x 150mm with hanging hole

Sold in packs of 20. $15.00 per pack Postage $5.00.

 

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