Anti Hot Spot Polytunnel Greenhouse Tape. Pull plastic over the tunnel. Pro Plus Poly Tunnel Replacement Cover Key features: A replacement cover for the Pro Plus Poly Tunnel Extends the life span of your Poly Tunnel Complete with 6 windows and 1 door Green PE mesh cloth 140g/m2 Durable and long lasting. The same cross piece is used at the gable end of the tunnel as they feature blunt ends which won't tear the polytunnel plastic. Row Cover Hoop House from Bonnie Plants. Our in-house design team are always innovating new products using the latest state-of-the-art 3D computer modelling system and structural analysis software. Mine is about that old now but is still fine. Standing 26” wide by 31” tall, the. How to replace a poly tunnel cover. XL Horticulture are suppliers of the worlds most advanced polytunnel polythene, smart films and spectral filter polythene and the worlds most energy efficient SUPER thermic polythene. 5mm Wall Thickness Z35 High Tensile Galvanised Tube As used to manufacture all our Polytunnel kits. The Range. The work required will depend on how you intend to use the space. A 10ft wide polytunnel is a popular choice for home gardeners and allotment holders. Free standard delivery on orders over £75. Poly, Net, and Fleece covers available. A polytunnel (also known as a polyhouse, hoop greenhouse or hoophouse, grow tunnel or high tunnel) is a tunnel typically made from steel and covered in polyethylene, usually semi-circular, square or elongated in shape. A 24 to 36-inch (60-91cm) tall plastic tunnel can be used to grow broccoli, Brussels sprouts, and cabbage. This makes transparent covers a much better option. It is also known as plastic tunnel technology are miniature structures giving greenhouse/ poly house like effect. It is ideal for growing many vegetable crops such as tomatoes, peppers, cucumbers, and melons. 90% of light is transmitted through the polyethylene and it stays warm much longer than a greenhouse and does not suffer from wild fluctuation in temperature. . Save 5% with voucher. Roll the plastic on the roof of the polytunnel. It’s usually made from a semi. Item. 5m x 2m (8ft 2in x 6ft 7in) Premium Polytunnel Galvanised Frame by New Leaf™. Mano Mano. The ends can be tied and. 5m Polytunnel Cloche Mini Garden Greenhouse SeedlingCloches are glass or plastic domes or square structures that fit over individual plants. Transparent plastic cover: the tough, durable and transparent PE plastic cover protects plants while allowing nourishing sunlight to pass through, the cover can be easily attached to the frame with the included tethers and single-sided tape; The 8 roll-up windows have mesh netting to allow for cross ventilation and climate control. 3. With steel strength typically found only in commercial high tunnels, these 14-gauge tunnels are designed to give you greater peace of mind on stormy nights. 3) The four holes were dug to the depth of the 'L' pieces and the arches inserted. Minimising wastage and maximising your yield potential, our industry-leading growing systems also enable you to forecast with greater accuracy, and so build strong relationships with customers. £149. Larger sized poly will ship via LTL (less than truck load) Motor-Freight. The average home garden plastic tunnel can be used to grow cool-weather crops from autumn into winter and from winter into spring. 81 to EUR 89. We offer a variety of Steel Hoops available in different widths. Thrivinger Garden Poly Tunnel, 310M Garden Grow Polytunnel Cover, Clear Plastic Sheeting Garden Diy Material For Greenhouse Roof Panels Foil Hothouse (Not Included Frame) 1. Gardman 7624 poly-tunnel with reinforced cover & Windows. We produce steel pipes and profiles - welded, also in galvanized version, as well as foil tunnels (professional and hobby ones), garage tents, gates and fences, made with non-welded method. The cover for your polytunnel should be a minimum of 720 gauge (about 180 microns). In this time scale, the cover can prevent UV degradation. 95 £79. If you can afford it, a poly tunnel with straight sides improves working conditions by providing more headroom and allowing more ventilation. 5cm tubes were too thin for my exposed site. Made with clear film with no slits or holes for maximum. Look, I’ll fess up if you will too. Large Polytunnels Small Polytunnels Polytunnel Accessories Polytunnel Covers Polytunnel Spares Popular Searches 4x4 Greenhouses 6x4 Greenhouses 6x6 Greenhouses 8x10 Greenhouses 10x8 Greenhouses Sheds & Storage Logstores Wooden Logstores Metal Logstores Sheds Wooden Sheds Plastic Sheds Polytunnel Cover/Sheeting | Clear Polythene Greenhouse Tunnel | 7. “Blowing air between layers creates an air pocket that acts as insulation,” says DeVore. 2 Solar tunnels. 99. "Welcome to Poly rope, polytunnel polythene covers, durable tarpaulin covers, and huge range of Insulation vapour barriers and fiberglass mesh for plastering and rendering We also specialize in various types of insulations foil, polypropylene ropes, weed control fibric and protective materials such as underfloor heating insulation membrane. In today's episode, I show you an EASY, CHEAP way to build a mini poly tunnel / Cold frame at home. £29. A quality tunnel house will also shield your plants from inclement weather, pests and predators. One low-cost method of accomplishing this is to use low tunnels. Brand new | Business. 5. 4. It is ideal for growing many vegetable crops such as tomatoes, peppers, cucumbers, and melons. It took several months to collect enough bottles (around 2,000 I think they mentioned) and was a fiddly job cutting the bottles to fit the bamboo poles the bottles needed to thread through. . Peppers and aubergines can also be grown up strings if you wish, there is a tradeoff between space requirement and extra work. grow your own in our poly tunnels, at a fraction of the cost of supermarkets. Our greenhouse plastic sheeting is manufactured to suit the South African conditions. Add to basket. Add to basket. Be aware, if other suppliers don't state the wall thickness it's because they don't. 99. Please Note: The calculations for our polytunnel covers are based on a polytunnel with a door frame at each end. We offer 200micron High Diffusing UV Stabilized PE Greenhouse film. Moreover, it can also be in clear and opaque shades. First, attach the inside to the side. Where outdoor structures are concerned, they can eventually succumb to the effects of adverse weather conditions. The average home garden plastic tunnel can be used to grow cool-weather crops from autumn into winter and from winter into spring. Learn more. Keep in mind, the longer the polytunnel, the more it will need to be braced for additional support. View More. Polyethylene. This post provides a list of tools and. ADD TO BASKET. 3 x 'T' 13mm connections. 1) Each arch built up with an 'L' shaped piece at the bottom of each leg. 2 x 6M Heavy Duty Polythene Sheeting, 125Mu/500g Extra Thick Plastic Sheeting Clear Garden Grow Polytunnel Cover Plastic Dust Sheet, Garden Grow Polythene Cover Sheets for Greenhouse, Polytunnel. gst) Load more products. Min Order: 400. If trenching the cover, making sure to pierce it in the bottom of the trench to prevent waterlogging around the polytunnel, otherwise, affix the cover to the base rail. They are sold in many sizes from mini polytunnels for gardens and allotments to large commercial polytunnels. Impulse Sealer - A smaller I Bar sealer often used for low production sealing. Whether you're looking for a timber or polycarbonate structure, read on for our tips to find the perfect greenhouse on a budget! Hot spots can degrade the polythene plastic over time. It is framed with steel and is generally made of crop bars, base rails, and a plastic polythene cover. AU $72. To Build A PolytunnelA video guide on how to build a polytunnel, taking it step by step from prep. An industrial strength tube ideal for adding extra supports or creating structures within a polytunnel. 16 shipping. Shop with Afterpay on eligible items. 20 full jet spray bits (50 piece contractor pack at Bunnings - you'll find a use for the. Buy our UV-stabilized clear 6 mil greenhouse plastic sheeting with a 5-layer film technology that provides additional strength and longevity. 4m) wide will enable you to put staging (shelves) on both sides. Hobby polytunnels without ventilation are known as single-vegetation. 50 / square meter. Poly Tunnel Frame Size Range: Pro+ Range: 3m x 2m, 4m x 2m, 4m x 3m, 6m x 3m & 8m x 3m. Firstly, you need to ensure that you’re getting the right cover for your polytunnel in terms of thickness. £39. 00. These 6 ft. 3m Long x 33mm OD Z35 High Tensile Galvanised Tube. Robinson Polytunnels supply a range of polytunnel polythene for re-sheeting your polytunnel. 150 micron replacement plastic covers for greenhouse poly tunnel / plastic film sheet for agriculture farm $1,850. Current lead time is approximately 14 business days. The same cross piece is used at the gable end of the tunnel as they feature blunt ends which won't tear the polytunnel plastic. Shipping. Showing 24 of 117 products. An industrial strength tube ideal for. Quonset, Polytunnel & Hoop House Ideas. Instead of a rope system, the structure is secured by metal base and hip board, side-braces, and purlins. Domestic polytunnel. D Pipe. Greenhouses and polytunnels are permanent or semi-permanent structures made of transparent material such as glass or plastic that protect plants from the cold and wind. 00. Allows for planting about 10 days earlier than without a cover. This helps protect the structure from rain and snow. UV treated, our 6 mil clear greenhouse plastic is rated for 4 years of life. A nut, bolt and self drill location screw are supplied with. Greenhouse Hoops,Grow Tunnel,Polytunnel,Garden Hoops Support Hoops 48 X 50cm Steel with Plastic Coated Support Garden Hoops for Greenhouse 6 Pack. Shop today!. £23. Poly, Net, and Fleece covers available. Shade fabric is used for heat and sun protection and creates a cooler environment for your plants. Here is help with planning for a successful installation of new plastic or replacement of old plastic over your hoophouse (high tunnel). View More. Row Covers and Accessories. Mercia 6 x 6 ft Wooden Apex Greenhouse (0)The Advantages of D-Plant Polytunnels. Step 9: Plant seeds. Polytunnels are wonderful structures and good value compared to greenhouses. Plants don’t use it but it is better to let. BHGS Ltd, Vale Park, Evesham, Worcestershire WR11 1GP Tel: 01386 444100 Fax: 01386 444101 Email: sales@bhgsltd. Together with the Construction Guide, our customers receive a detailed ‘Polytunnel Parts Check List’ to help them identify each polytunnel part. You may wish to secure it with bricks or rocks. Trending at. We call it polyethylene in the US. Making full use of these documents together. Full-text available. 45m x 3m x 0. £1488 (£0. I Bar Sealer - A machine consisting of one heated side used to seal off and enclose products within a flexible plastic film. Please feel free to contact us on 01282 811250 or by e-mail if you are. Make sure it’s tightly drawn across the frame and then anchor it at the base of the structure. The extra cost at the beginning can save money in. 2. 4mm or diameter 38. We produce steel pipes and profiles - welded, also in galvanized version, as well as foil tunnels (professional and hobby ones), garage tents, gates and fences, made with non-welded method. Supplied as a complete unit ready for assembly onto a soil base and includes ALL of the following: An all-steel framework – made using LARGER diameter. 593m Long x 33mm OD Z35 High Tensile Galvanised Tube. Also commonly used to cover crawl. The support for the headboard is about 2×6 ×17 inches in dimension. Mano Mano. The standard method of covering a polytunnel is to dig a trench around the base of the framework and bury the polythene cover in the ground. Clear Greenhouse Film Plastic Sheeting 6 Mil Thickness,Greenhouse cover Polyethylene Plastic,5 Year UV Resistant Film Hoop Green12 x 28ft ,for Gardening, Farming, Agriculture, Garden (12'W x 28'L) 86. 5m is commercial Polytunnel insulation used throughout the country. Buy it now + EUR 2. Recycled polytunnel plastic is also used in the production of non-agricultural products, such as plastic bags, water pipes, and automotive parts. Made from 140 g PE fabric, with a galvanised steel metal frame, this tall 6 x 3 x 2 m polytunnel can cover a large flowerbed or vegetable patch. POLYTHENE IS. This gives it one of the most robust frameworks on this list capable of withstanding fairly harsh winds and. Stal Impex is a company specializing in the production of highly-processed steel products in the form of sections. 90. The main issue seems to have been stopping up the gaps properly. Many people decide to install this plastic as their end-wall covering. Polytunnels are pop-up plant protection tunnels, usually made from plastic hoops that suspend a layer of horticultural fleece over the plants. Anchor Plates. 5m, 6m x 3. It is miniature structure, which produces greenhouse-like effect. Pro-Gro Mini Poly Tunnel – 2m long x 0. Then, drape a sheet of heavy duty polytunnel plastic and staple it to the bottom of your garden box. Snapa Clear H Sections. Build an easy cannabis polytunnel: Poles and hoops. From the polytunnel frame and polytunnel parts to covers, clamps and internal additions - polytunnel accessories will help you to create the perfect growing space and to maintain it and repair it as needed over time. Add to Cart Compare. Average cost. Poly Lock Channel and Spring Wire work together to create the best greenhouse film fastening method on the market. Poly Tunnel Garden Cloche 3m x 1m Net Tunnel 2m x 1m Net Tunnel 3m x 1m Net Garden Cloche 1. Generally speaking, poly bags are made from polyethylene, one of the most popular types of plastic packaging formulations today. Patch holes and rips in Single OR Double Layer Greenhouse Plastic our FREE High Tunnel Hoop House Winter Maintenance Gu. 3. Minimising wastage and maximising. Investing in anti-hot spot tape and installing this before placing the plastic cover on your Polytunnel can be well worth your time and effort. That’s Aussie smarts, used to create products for unique Aussie conditions. 2 x 6M Heavy Duty Polythene Sheeting, 125Mu/500g Extra Thick Plastic Sheeting Clear Garden Grow Polytunnel Cover Plastic Dust Sheet, Garden Grow Polythene Cover. EUR 16. UV5 Poly Tunnel Greenhouse Polythene Plastic Sheet Cover Foil Horticultural PVC. For a 3 foot wide tunnel you will need a meter of tubing. 12. If you're interested in erecting a polytunnel your. The exception here is if you only have a small space. How You Can Recycle Polytunnel Waste. 99 £69. 17. Lay out the poly lengthwise on one side of the high tunnel. All the polytunnel covers that we supply have a 5 year guarantee against UV degradation and. Polytunnels first appeared in the 1960’s once the plastics industry managed to produce reliable wide width polythene sheeting. Please Note: The calculations for our polytunnel covers are based on a polytunnel with a door frame at each end. • Our tunnels have very good head clearance right out to the sides giving ample. We built it using raised beds as a base,. The chamber dimensions for the 1808-28 shrink tunnel are 18"Wx 28"L x8"H. JFM Polytunnels. The polytunnel plastic is designed to be durable in many types of weather, it is resistant to UV degradation for up to five years, and is inexpensive. 5. 27ft (8. 34 watching. To assist with pollination. Expert installers can help ensure that your polytunnel is erected as well as possible. Or fastest delivery Tomorrow, 1 Oct. Next, place the plastic hoop ends inside the poles. 1x 5 Metre Clear Vegetable Fruit Polytunnel Grow Tunnel - Steel Frame Garden Greenhouse Plastic Poly Tent - by Harbour Housewares 3. AU $30. £34. Transparent plastic cover: the tough, durable and transparent PE plastic cover protects plants while allowing nourishing sunlight to pass through, the cover can be easily attached to the frame with the included tethers and single-sided tape; The 8 roll-up windows have mesh netting to allow for cross ventilation and climate control. Distance over arch (A) = 5. There are two common approaches to keeping a polytunnel warm: Retaining daytime heat. Wider ScopeFig. Get the best deals on Polytunnels Frames. Solar tunnel offer a standard straight-sided burrow plan, however the spread is very . Peppers and aubergines can also be grown up strings if you wish, there is a tradeoff between space requirement and extra work. Jessica Walliser. Supported by 6mm fibreglass poles, the 3m Poly Tunnel is easily folded away when not in use, and includes 3 x openings (for easy access. Image used with permission by copyright. 5x17m) and they served me well except that their 1in/2. Polytunnel Parts. In my own polytunnel over the last few years I have grown a range of Tomato plants including the cherry tomato ‘Sungold’ the heritage ‘Super Marmande’ and the Hybrid ‘Gigantomo’ which still remains my favourite. 77. The eaves should be at least 5ft (1. They are made very. Available widths: 8m - €15. Any building can be heated. Our tunnel house plastic roll-up door and ventilation windows with mosquito screens provide fresh air - regulating your tunnel house temperature and humidity to keep your plants growing well. I've been struggling with trying to keep the plastic on my low tunnels in my garden. When you run a heater in a single-poly tunnel, you heat the air, and that hot air goes right through the plastic. Typical specifications for a high tunnel covering would be a single layer of greenhouse grade 6 mil polyethylene rated for 5 years. Our greenhouse company is specialized in greenhouse farm , hydroponic equipment supplies, plant nursery and etc. 19 £ 4 . Be sure and leave at least one end of the poly tunnel open so you can reach in with a watering can and. Greenhouse grade polyethylene, a plastic film, is the most common material used for covering high tunnels. 0302 lbs per square ft. While Spring Wire Poly Lock Channel is very easy to use for securing greenhouse plastic, the channel itself must first be attached to the metal framing of your structure at any points you want the plastic to be secured. Once you feel like growing in the polytunnel, you might want to come up and grow more. They are created from the sun’s heat, causing a rise in the temperature of the metal framing. This sounds. Polycarbonate can come in a few colors. 5mm Wall Thickness Z35 High Tensile Galvanised Tube As used to manufacture all our Polytunnel kits. we bought the cover from one of the plastic retailers who is local to us. 3m Long x 33mm OD x 1. 100%. 100+ bought in past month. Hobby polytunnels can accommodate growing surfaces from 50 to around 400 square feet. From Einhell to Outsunny, you'll find a wide selection of greenhouses, polytunnels, balcony greenhouses and walk in greenhouses from our outdoor brands. Dunno what a polytunnel is, but it sounds like the high-tunnel type of greenhouse or low tunnel. 0 out of 5 stars 1 £4. com offers 2,024 polytunnels products. £. Condensation issues in polytunnels can be resolved by installing Thermal Anti-Fog covers, which effectively reduce moisture. Our range includes 5 UV stabilized covers, both. Horizontal brace bars for 12ft wide tunnel approx $72 per bay plus freight. Our high tunnels help CSA’s and vegetable growers alike enjoy an extended season by getting their product to market sooner. The plastic corner pieces for inserting the tubes are also the only way the wood is attached (based on the instructions. Manufactured on site at our facility in Armagh. The seeds are sown in rows, covered with a 0. 3m Long x 33mm OD x 1. 52 per bay plus freight. 24" Diameter Plastic Hula Hoops (pack of 12) 3 Panel Weather Station 32 Inspirational Quotes 40 Benefits of Having a Pet 5 x 10 Sandbox Kit (Seats, Cover, Box) 50 Bird Species and the Sounds They Make 6 Foot Landscape Timber with Spikes Kids Need Playgrounds 8-Feet Diameter Kaleidoscopic Merry-Go-Round 8 Foot Spiral Tube Slide by Sii,. Greenhouses and polytunnels: make the right choice. We also offer all-in-one greenhouse kit solutions. Perfect for new polytunnel builds or as replacements for an existing polytunnel system, all our covers are made with polythene for its thermal, weather resistant qualities. . For £400, you could buy a 6×20 foot or 10×12 foot polytunnel. Polytunnels are wonderful structures and good value compared to greenhouses. Depth: 300cm. 00 - $13. 4m long giving a ridge height of 2. £34. Fasten the Polytunnel frame to the wooden frame. Free standard delivery on orders over £75. Polytunnels often have lots of headroom so are ideal for cordon crops such as tomatoes and cucumbers. 41 postage. 0 out of 5 stars $99. Crops Suitable for Polytunnels. Polytunnel covers are always a major aspect of any farmers or. I was excited to erect this as I have neve. A polytunnel (also known as a polyhouse, hoop greenhouse or hoophouse, grow tunnel or high tunnel) is a tunnel typically made from steel and covered in polyethylene, usually semi-circular, square or elongated in shape. 0 out of 5 stars 1 £4. Source publication. Shade Polytunnel Polythene Film Replacement Cover 11. The base should touch the ground to allow maximum adjustment if needed. Some possible remedies for high salts include having adequate. Where outdoor structures are concerned, they can eventually succumb to the effects of adverse weather conditions. We replaced the old cover in just under 2 hours. JFM Polytunnels. BIRCHTREE 6M (L) x 3M (W) x 2M (H) Polytunnel Greenhouse Pollytunnel Poly Polly Tunnel Fully Galvanised Anti Rust Steel Frame 6 Section. Make sure the piece of plastic is large enough to fully cover the arches and extend all the way down over the lip of the raised bed on all four sides. Now, I have added wood pallet shelves as another vertical gardening technique. This full UV spectrum film has a dramatic effect on flower, fruit and foliage colours. 3. The. Adjust the plastic so it will create a tight seal on the roof and sides of your polytunnel. £186. 2m Wide Rolls of Clear Polythene Sheeting in Stock. The triangles were pieced together and held in place with screws, starting at the bottom. A polytunnel is a tunnel-like structure that first appeared in the 1960s. How much does a polytunnel cost? Polytunnels are a much more cost-effective alternative to greenhouses. 00. Nationwide Delivery CALL US: 087 2456553 or 087 9417600 or email: yvonneronanegan@gmail. Northern Polytunnels has become a household name that is synonymous with quality. The photos show a repurposed garage or sunroom converted to a growing area with insulation, heating, double pane windows or UV-filtering film and a shade system. Don't settle for anything less than the strongest and thickest polytunnel plastic covers. Polytunnel Repair Tape. Call 1-800-234-3368. 4 Options From £29. These include specialist clamps and basic fixings & fastenings. From our polytunnels manufacturing facility in Navan County Meath, we produce a vast range of polytunnels and polycarbonate greenhouses in a selection of sizes from 6ft wide to more than 30ft wide and to any length you require. It features 4x retractable windows that allow light in and a reinforced steel frame for additional stability. Grow With Us, at Hortitech. Excellent for repairing tears in polythene sheets on Polytunnels, Cloches, etc. Poles go in the ground, approximately 10 – 20 cm deep. com. 6 Mil Greenhouse Plastics. The walkway, dubbed the Bude Tunnel, has had visitors from all over the country and some even said it was better than visiting the. Clear plastic polytunnel covers are made from high-quality 150mu (600 gauge) polythene which is tough and long-lasting. Crinkill House, Birr, Co Offaly Eircode R42 VX36 Tel: 057 912 0424 Fax: 057 912 0944 Email: info@polydome. These are such as polyhouse but size and height are small. This low tunnel film is designed for use over small, vulnerable crops early in the season and is typically supported by wire hoops. Cover Films for Growing Tunnels. Greenhouse Garden Polytunnel Grow Tunnel Vegetable Allotment 0. 19Polytunnel Ground Anchor Kit. Supported by 6mm fibreglass poles, the 3m Poly Tunnel is easily folded away when not in use, and includes 3 x openings (for easy access. 50 – $ 200. AU $31. An industrial strength tube ideal for adding extra supports or creating structures within a polytunnel. 30ft (9. 8 1/2 inch PVC pipe, 10 feet long. In my 10-foot-wide tunnel, I. There are two ways to hold the plastic cover in place: pinning it to a wooden base rail which is fitted to the foundation tubes; or. 120 square ft. The 1808-28 shrink tunnel is an ideal fit for the 1622 L Bar sealer or the 18"x18" L Bar sealer. 148m Mini Greenhouse (2) £220 . They continue to become more popular each gardening year. Large Tunnel Greenhouse Plant Garden. Screwing the Channel to Metal. 45m x 3m x 0. Available polythene widths. Choose from Poly Tunnel stock illustrations from iStock. Copolymer poly is a low-cost material that is good for one season. Versatile Polytunnel Frame Only We understand that nothing lasts forever. 9 out of 5 stars 177 £9. Unlike greenhouses that remain covered all of the time, high tunnel plastic coverings may be applied and removed seasonally, depending on the requirements of the crop. 031 x 1. Great fillable sandbags for. Delivery. The tubes are 4 feet apart. This tape is transparent allowing light transmission and is UV stabilised making it resistant to weathering and will normally outlast the polythene cover. ii) You can water by hand, or use a drip and trickle irrigation or sprinkler system. Many people don't know the difference between PE tarpaulin and PVC plastic tarpaulin. It is a very versatile form of tubing that has break and crack resistant walls. 49 FREE delivery 9 - 15 SeptHandy Screen Shade Cover (Suits 6. Using our guides, you can accurately calculate what size of cover to order by taking a few simple measurements of your polytunnel. Height/Length: 200cm. Polytunnels usually have an elongated shape, strongly resembling a tunnel. 4-Tier Green 160cm Greenhouse - Polytunnel Poly Plastic Garden Plant Vegetable Mini Growhouse Tent Polyethylene Cover - By Harbour Housewares. Once erected they will be there for several years, so check out my tips before buying. A polytunnel usually consists of a metallic, plastic, or wooden frame, covered with polythene or other similar materials. . Creating a heat source inside a polytunnel. from China. Contact 01282 811250 today! Manufacturing and Building Polytunnels, Greenhouses and Canopy Structures in Ireland for over 48 years! We believe in supplying and building for our customers a quality product that lasts a lifetime. The plastic was heated and stretched over the triangles, then tacked down at the edges. Hoop Houses polytunnel uses a series of hoops to support the plastic covering. Thinner thicknesses can be too flexible and. For those wanting a greenhouse plastic with a little bit more durability, 9 mil woven greenhouse plastic is a great option. Feel free to modify the length as you see fit. 4. Material. Crops such as green beans, onions, and peas are the most sensitive, while cabbage, cucumbers, peppers, and potatoes are a bit salt tolerant. 00. Buy Plastic Greenhouses & growhouses at B&Q 1000s of DIY supplies.