Poly tunnel plastic. Add to basket. Poly tunnel plastic

 
 Add to basketPoly tunnel plastic  Polytunnels Direct is an Irish Company and Fully Insured

100%. We sell by full sheet, half sheet, or cut to size. Polythene Covers, Netting & PVC / Canopy Covers. 99. 5m & 8m x 3. 5cm tubes were too thin for my exposed site. 52 per bay plus freight. 99. Contact 01282 811250. Rough weight of this Greenhouse Plastic is . Plastic also raises humidity so is ideal for crops like celery which loves it. 3m Poly Houses) A$395. 2011dress (123,186) 97. 2m, 11. They are made very. The support for the headboard is about 2×6 ×17 inches in dimension. Tomatoes need a germination temperature that remains between 25ºC and 27ºC, and 20ºC after they have emerged. Distance Over Hoop: 16ft 1in. Grow Tunnel, 7 m Long, Plastic Greenhouse, 10 Arches, £52. 5m x 2m (8ft 2in x 6ft 7in) Premium Polytunnel Galvanised Frame by New Leaf™. Polyane consists of a 3-layer transparent film which will last for many years. First Tunnels range of polytunnel covers are durable and manufactured with the best materials to ensure they are durable and long lasting. This black/white polytunnel polythene film is an 800 gauge/200 micron film designed for polytunnels that are used as animal housing or storage units. 3. The seeds are sown in rows, covered with a 0. 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. 5mm Wall Thickness Z35 High Tensile Galvanised Tube As used to manufacture all our Polytunnel kits. 50 per running meter. 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. Polycarbonate sheets are used to build polytunnels primarily because of their unrivalled strength which makes them suitable for cold bending over the tunnel radius. Our greenhouse plastic sheeting is manufactured to suit the South African conditions. UV5 Poly Tunnel Greenhouse Polythene Plastic Horticultural Sheet Cover Foil PVC. 45m x 3m x 0. Our polytunnel structures are all. The word cloche comes from French and means ‘bell’, a reference to their shape. 24ft (7. 5m - €20. I’m in the northeast USA. Straight-sided poly tunnels often have a. If you are cutting from a longer roll of plastic, be sure to leave 2’ extra on each end to allow for attaching to the end walls. 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,. 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. £186. 19. 60/meter) £14. This Polytunnel Greenhouse is a good product for cultivate seedling , optimum temperature , protect. NOTE: Polythene comes in one sheet cut to Length in meters as specified by the number you enter in the box beside 'add to basket'. If you can afford it, a poly tunnel with straight sides improves working conditions by providing more headroom and allowing more ventilation. Now, I have added wood pallet shelves as another vertical gardening technique. Add to basket. This kit includes 6' Wiggle Wire bundles and 6'-6” bundles of Aluminum U-Channel Base sections with self-drilling center groove guides. It helps if you measure the plot first to make sure it’s square. AU $104. 16 shipping. 1m wide x 12m long. 25m Net Garden Cloche 1m x 1m. 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. At JF McKenna we design, manufacture and supply a wide range of domestic and commercial polytunnels, with polytunnels to suit the small gardener to the professional grower. • All our tunnels have a 5 year polythene with an ultra violet light inhibitor, to protect from break down by the suns rays. For a 3 foot wide tunnel you will need a meter of tubing. We use a local galvanising. This heap had 3 year old compost on the bottom, two year old on top. In this time scale, the cover can prevent UV degradation. UVI Five Year Tunnel Polythene Sheets We also supply new polytunnel covers for any tunnel or DIY structures. That said, this entry focuses far more on providing. Cold Frames are smaller polytunnels that protect plants from frost and cold weather. As well as protecting from pests and cold weather, these strong, plastic garden cloches utilise rainwater collection reservoirs to make sure plants still receive water. Buy it now + EUR 2. unique. If fencing in your garden isn’t an option, using polytunnels to protect your veg is the next best thing. 3 x 'T' 13mm connections. 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. These include foundation tubes, steel tubes, complete accessory kits, specialist clamps and basic fixings & fastenings. Many of these items can also be used on polytunnels manufactured by other companies. By capturing and retaining solar radiation, these tunnels are an awesome tool to have. Outsunny 6 x 3 x 2 m Polytunnel Greenhouse Pollytunnel Tent w/ Steel Frame White. 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. 32m) Wide From £2,187. The interior heats up because incoming solar radiation from the sun warms plants, soil, and other things inside. 2: Closed plastic poly tunnel. 99. From Einhell to Outsunny, you'll find a wide selection of greenhouses, polytunnels, balcony greenhouses and walk in greenhouses from our outdoor brands. Although primarily used by gardeners and commercial growers for growing vegetables, fruits, and flowers, they can also be used to house livestock, or for storage. 0302 lbs per square ft. AU $102. Please use our Contact Form. Factory supply Low cost cheapest plastic tunnel greenhouse for sale. Welcome to our 6ft (1. PLEASE ENSURE YOU USE THE CALCULATOR PROVIDED. Sheet The Polytunnel Correctly. Items 1 to 12 of 12. Available in a huge range of sizes from 10x12’ up to 18x66’ our polytunnels are suitable for the smallest garden to the largest commercial plot. They can fit within many gardens and other growing spaces while still offering a good amount of space for growing food. The Range. Jessica Walliser. Polytunnels are 2–2. Greenhouses and polytunnels: make the right choice. A video to show how our polytunnel is secured by using battons. 4. Chapter. Garden Grow Tunnel 6x3m. A premium grade UV Tolerant greenhouse bubble insulation – this is not to be confused with cheap bubble wrap used for packaging. WAIZHIUA 2m x 3m Heavy Duty Polythene Sheeting 125Mu/500g Extra Thick Plastic Sheeting Clear Polytunnel Cover Plastic Dust Sheet for Greenhouse, Polytunnel, Farming, Painting Work. Secures easily with Spring Lock Channel and Wire, and can last more than 4 years if installed correctly. Hoop Houses polytunnel uses a series of hoops to support the plastic covering. Many people decide to install this plastic as their end-wall covering. High Tunnels are similar to hoop houses but are taller and are mostly used for commercial crop production. 99. Replacement Covers. Material. Best End-Wall Greenhouse Plastic: Clear 12 mil Woven Greenhouse Plastic. Choose from our store's collection of greenhouse covers today!Polytunnel Ground Anchor Kit. Polytunnel plastic is rated to last for 5 years. I Bar Sealer - A machine consisting of one heated side used to seal off and enclose products within a flexible plastic film. The better the climate control inside the structure, and the better the. They allow through the whole spectrum of sunlight, but trap the (infra-red) radiation that is reflected from the earth or plants (plus the warmed air is prevented from mixing. Polytunnel covers are always a major aspect of any farmers or. It has a life expectancy of up to 10 years and comes with a 5-year warranty against UV degradation. ADD TO BASKET. Greenhouse Poly & Covers. This low tunnel film is designed for use over small, vulnerable crops early in the season and is typically supported by wire hoops. 99. BRAND NEW 14FT X 30FT POLYTUNNEL KIT - HEAVY DUTY PROFESSIONAL GREENHOUSE - WD. 0 out of 5 stars 1 £4. In simple terms the diffused polythene helps trap and preserve higher temperatures inside the structures for much longer - in heated structures, a 15-20% fuel savings can be achieved. 2) The arches were temporarily sat in their final positions to mark ground areas were we needed to dig the holes for each leg. Pro Gro Poly Tunnel Cloche, Mini Greenhouse and Tomato £19. Wider ScopeFig. Make sure it’s tightly drawn across the frame and then anchor it at the base of the structure. Brand new | Business. "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. Screwing the Channel to Metal. The eaves should be at least 5ft (1. Polyethylene. Buy our UV-stabilized clear 6 mil greenhouse plastic sheeting with a 5-layer film technology that provides additional strength and longevity. The use of Base Rails is a very popular option for covering a polytunnel. 12. 27ft (8. Unit. 15m - €24 per. 13mm poly pipe - 30 metres. We have a wide range of horticulture materials for sale including greenhouse plastic, anti-bird netting & more. Peppers and aubergines can also be grown up strings if you wish, there is a tradeoff between space requirement and extra work. 0302 lbs per square ft. The 10ft wide is the most popular of the Premier Polytunnels garden polytunnel range. Sheeting a polytunnel correctly and making sure that the plastic is taut and as crease-free as possible will mean that the plastic will last far longer than it would do on an improperly installed polytunnel. $ 2. 3m Long x 33mm OD x 1. 75m x 1m high . Choose your length and thickness and place your order today!Yield and Quality. We offer a variety of Steel Hoops available in different widths. 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. . See full list on clearambershop. We offer 200micron High Diffusing UV Stabilized PE Greenhouse film. Dunno what a polytunnel is, but it sounds like the high-tunnel type of greenhouse or low tunnel. 66 to AU $357. Lightweight, sturdy and with walls constructed from polyethylene the 3m Poly Tunnel has been designed to give your plants, herbs and seedlings a localized micro climate of their own. 1) Each arch built up with an 'L' shaped piece at the bottom of each leg. 86% on a cloudy day. That’s Aussie smarts, used to create products for unique Aussie conditions. . 5 out of 5 stars 78. Shipping. 25m Net Garden Cloche 1m x 1m. Available polythene widths. A more in-depth analysis of building a. 50+ bought in past month. I worked in a commercial grower operation (about 8 acres under plastic) and even huge holes were best repaired with tape. 100+ bought in past month. Horizontal brace bars for 16ft polytunnels come standard with crop hangers and are approx $127. Northern Polytunnels has become a household name that is synonymous with quality. The steel has a yield strength of 350N/mm 2 which is stronger than the standard 275N/mm 2. Cover the frame with plastic sheet material. The metal ring which holds a chisel blade's tang to its handle. Stal Impex is a company specializing in the production of highly-processed steel products in the form of sections. A quality tunnel house will also shield your plants from inclement weather, pests and predators. 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 burying a skirt of polythene in a trench 30cm deep. For the headboard, you will need 2×6×76 inches. With a four-year warranty against UV degradation, Bootstrap Farmer's hoop house plastic film can also be cut to custom sizes. Greenhouse Plastic. Polytunnels are wonderful structures and good value compared to greenhouses. 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. With your polytunnel build complete, you can prepare the interior ready for planting. It is best to do this on a calm day. A$315. Lightweight, sturdy and with walls constructed from polyethylene the 3m Poly Tunnel has been designed to give your plants, herbs and seedlings a localized micro climate of their own. Snapa Clear H Sections. I already have a hanging shelf (made with leftover polytunnel plastic sheeting and scrap wood) and a trellis (on which I string milk bottles for additional container growing. Zippered panels can be opened to vent excess heat on sunny days or to permit access when tending to plants. The Glasshouse Company are manufacturers of. 4 year 6 mil Greenhouse Plastic is the most commonly used type of covering option for long term installation purposes. Prolongs the growing season. Was: £299. Step 6: Cover the frame with plastic sheeting. 50. Mercia 8 x 6 ft Traditional Apex Greenhouse Combi Shed (0) £1,300 . Many market gardeners use it as a starting point, often than later converting the caterpillar tunnel into a high tunnel greenhouse. VonHaus Polytunnel Greenhouse - Walk-In Polytunnel Tent with Steel Frame. In this article, we will discuss the factors that impact the longevity of polytunnel plastic and how it can be recycled. Figure 1. 6 Mil Greenhouse Plastics. Even in winter, the power of the sun through the plastic can raise. 1M Wide Diffused Price per running meter. This greenhouse is perfect for hobbyists, gardeners, and farmers alike. 5. JFM Polytunnels. At the end of the season, carefully disassemble the DIY polytunnel and store away until the next growing season. It is very important to avail of a soil free from pathogens and pests. The work required will depend on how you intend to use the space. Polytunnels usually have an elongated shape, strongly resembling a tunnel. 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. Lets go over them in a list here, before taking a deeper dive into each type of hardware component. All of our 6 mil Greenhouse Poly comes pre-folded and rolled up on a hollow cardboard cylinder. Polytunnels are usually shaped, as the name implies, like a tunnel. PLASTIC PVC PE GREENHOUSE GROWHOUSE COVERS & FRAME GARDEN PLANT GROW STORAGE BAG. Our polytunnels are some of the strongest and most durable garden tunnels available in Ireland and the UK. Making full use of these documents together. The FeelGoodUK Polytunnel comes with a full, heavy duty 25mm steel metal frame and stronger welded joints all through. QUALITY POLYTUNNEL PLASTIC. The tunnel houses you can buy have various options for ventilation including louvres, roof vents and doors. A wooden garden stake cut to 1m is useful to get the gap from the first poly pipe. 57 Products. View More. Greenhouse material, such as shade cloth, is a simple solution that affords those that battle against the elements to reclaim the comfortable conditions required to maintain stable growth and healthy plants. Mercia 6 x 6 ft Wooden Apex Greenhouse (0)The Advantages of D-Plant Polytunnels. Features a heavy duty reinforced polyethylene cover, two zippered roll-up windows, & doors. They are created from the sun’s heat, causing a rise in the temperature of the metal framing. HomeAdvisor says the average cost to build a greenhouse in 2021 is USD 15,746. Not bad considering. 0 out of 5 stars 1 £4. 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. Our range includes 5 UV stabilized covers, both polythene and net so you can choose the best for your planting needs. At Premier Polytunnels, we manufacture high quality commercial and garden polytunnels, polytunnel accessories, cloches, fruit cages and sheep housing. 20 full jet spray bits (50 piece contractor pack at Bunnings - you'll find a use for the. . Mr G used polytunnel plastic, excess from another tunnel build, for the roof which was then covered in chicken wire to prevent neighbouring cats. 77. £219. Purchase high quality commercial and garden polytunnels online from Premier Polytunnels, direct from a UK manufacturer. Any building can be heated. Available polythene widths. JFM Polytunnels. GreenlifeGRO provides greenhouse solutions to farmers and growers to help shield their crops while increasing yields. AU $72. Free delivery and returns on eBay Plus items for Plus members. Plastic Attachment. A more in-depth analysis of building a. 3 x 90 degree 13mm corner connections. 6 Mil Greenhouse Plastics. 12) At one end of the tunnel, gather the plastic together at a point about four feet from the end of the plastic and lay the gathered plastic in the base of the U-bolt. Max out your farm with the thick­est gauge steel Caterpillar Tunnel on the mar­ket! We now offer a 16-ft wide tun­nel (up from 14 ft) with 40% thick­er, 14-gauge steel bows (up from 17 gauge). The use of Base Rails is a very popular option for covering a polytunnel. (Photo by Wayne Whitmore) Figure 3. 3m, 9. Here are some commonly used types of polytunnel covers: Clear polyethylene: This popular type of plastic polythene is commonly used for general purpose growing, this clear covering, is durable, UV resistant, and allows maximum light transmission, making it an ideal choice for growing a wide variety of crops. 4. Horticultural Greenhouse Plastic Shade Cloth. Lay out the poly lengthwise on one side of the high tunnel. Overall Height: 6ft 4in. Snapa Clear C Sections. POLYTHENE IS. 2 Solar tunnels. 92. organic fruit and veg straight from your poly tunnel to your kitchen. Greenhouse plastic to suit size of Tunnel House or Polytunnel; Hortiweave roll-up door curtains. Showing 24 of 117 products. Please feel free to contact us on 01282 811250 or by e-mail if you are. Walk In Polytunnel Round Greenhouse - Green / 6m. The plastic allows early in-ground seed starting, the others work great for pest control and and shading during the scorching July weather. Together with the Construction Guide, our customers receive a detailed ‘Polytunnel Parts Check List’ to help them identify each polytunnel part. Polytunnels tend to flex more in the wind than greenhouses, which might explain why a relatively inflexible material like corrugated plastic develops cracks. View More. Anti Hot Spot Polytunnel Greenhouse Tape. All of our 6 mil Greenhouse Poly comes pre-folded and rolled up on a hollow cardboard cylinder. 5mm Wall Thickness Z35 High Tensile Galvanised Tube As used to manufacture all our Polytunnel kits. It is framed with steel and is generally made of crop bars, base rails, and a plastic polythene cover. I built 2 for around £30 in total. However, the plastic film used for. Save 5% on any 4 qualifying items. 5 out of 5 stars 4. Delivery. 9 Best Crops To Grow In A Small Polytunnel. 1m & 7. 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. In my 10-foot-wide tunnel, I. If you're interested in erecting a polytunnel your. 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. The ends can be tied and. Just glue and screw all the sides for your bed frame. 30ft (9. $4299. Free postage. After the plastic was placed over the triangles, the greenhouse was ready to assemble. Allow at least 1 to 2 feet of space in between staples and screws. 58. High Tunnel Low Cost Single Span Plastic Green Houses For Agriculture , Find Complete Details about High Tunnel Low Cost Single Span Plastic Green Houses For Agriculture,Greenhouse Plastic Film Greenhouse,Single-span Greenhouses,Agriculture Green House With Climate Control System For Greenhouse from Single-Span. This is misleading. Avoid construction grade material that has less strength. It features 4x retractable windows that allow light in and a reinforced steel frame for additional stability. SPONSORED. This listing is exclusively for the cover. • All our tunnels have a 5 year polythene with an ultra violet light inhibitor, to protect from break down by the suns rays. We are a family and owned company - we care about the products and services we offer you. Other veggies grown in the polytunnel include cucumbers, apple and lemon cucumber, courgette, carrot, parsnip, hot and sweet. Instead of a rope system, the structure is secured by metal base and hip board, side-braces, and purlins. Greenhouses and high tunnels are structures covered with a solar ray-transmitting film. 2x timber framed, hinged doors. (Drawn by Vince Giannotti) Figure 2. Plants don’t use it but it is better to let. Clear plastic polytunnel covers are made from high-quality 150mu (600 gauge) polythene which is tough and long-lasting. Make the perfect choice to suit your commercial needs with Northern Polytunnels' excellent range of high. . Their maintenance is easy but life is less than polyhouse and has comparatively higher temperature inside the structure due to less. Poly-Tex High Tunnel greenhouses are a quick and inexpensive way to lengthen your growing season, protect your crop from pests and disease, decrease water usage, and increase your crop yield. 81 to EUR 89. Fancy building a DIY polytunnel and wondered where I could get the blue or yellow pipe with an approximate 2 inch inside diameter? Loads of polytunnels on our allotment site but it appears most of the pipe was begged, stole or borrowed from any water or gas works that were taking place. 9 out of 5 stars 177 £9. Variety of applications: fabric greenhouse shading, vegetable garden shade, general shade cloth for home, pergola and garden. P Clips can also be used as a universal fixing method for the easy attachment of timber, wire supports, or anything else you might want to attach to the metal polytunnel frame. co. Add to basket. It’s thin (6- to 12-mil), durable and the least expensive of the four greenhouse plastics. Row Cover Hoop House from Bonnie Plants. 99$14. Item. Extend Your Growing Season. 1. Polytunnels first appeared in the 1960’s once the plastics industry managed to produce reliable wide width polythene sheeting. 5. If you need your cover ASAP, view our pre-cut and ready-to-ship 6 mil covers, which ship out in 1 to 3 business days if they are in-stock. Such greenhouses are known to sometimes require. Optimized for maximum light transmission, our 4 Year Clear Greenhouse Plastic Sheeting is second to none. The size of tube we use for our polytunnels and fruit cages is diameter 25. The Advantages of D-Plant Polytunnels. They are hoops covered with layers of fabric or plastic sheeting for protection from the elements and to better control the growing environment outside of the normal growing season. Polytunnel plastic is typically made of polyethylene, a thermoplastic that can be melted down and reused. Polytunnels Direct is an Irish Company and Fully Insured. Attaching greenhouse plastic to metal framing is very easy, however, it will require a few additional pieces of hardware in order to firmly connect the plastic for any duration of time. There are many gardening tricks to guarantee a better yield. 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. 3m Long x 33mm OD x 1. 99. A nut, bolt and self drill location screw are supplied with. 98. 5 cm layer of soil, in the middle of March. 4. Find high-quality royalty-free vector images that you won't find anywhere else. As the name suggests, a polytunnel is a structure made of polyethene plastic that’s usually shaped into a tunnel using plastic or steel hoops. The plastic was heated and stretched over the triangles, then tacked down at the edges. Greenhouses come in a range of widths and lengths, in 2ft (60cm) increments. A detailed walk-through of my polytunnel build, including every major step, with explanations and footage. 14 with Subscribe & Save discount. 5. Polycarbonate can come in a few colors. 3m Long x 33mm OD Z35 High Tensile Galvanised Tube. For the same price, however, you would only be able to buy a much smaller greenhouse, sized just 6×8 foot. It’s quite simple. Just take care not to break any glass or damage the plastic of your structure. This low tunnel film is designed for use over small, vulnerable crops early in the season and is typically supported by wire hoops. Poly Lock Channel is secured to metal framing using Self Tapping Tek Screws. We also have our own commercial nursery so we have a practical. We offer various types of made in Canada poly coverings and accessories for your growing projects or our custom made high tunnel greenhouses . Fasten the Polytunnel frame to the wooden frame. Be sure and leave at least one end of the poly tunnel open so you can reach in with a watering can and. 50 – $ 200. Click + Collect available. Premier Polytunnels use clear UV resistant polytunnel Repair Tape with high tack acrylic adhesive on one side. In this video we. $25 Easy 5×5 Greenhouse from Instructables. We also have our own commercial nursery so we have a practical. They are made of a series of plastic or metal tubes that are hinged along one side and can be opened and closed to allow the sun and air into the tunnel while keeping the plants warm. That is the large walk in frame tunnels covered in plastic sheeting for growing a wide variety of crops from. Opens in a new window or tab. This gives it one of the most robust frameworks on this list capable of withstanding fairly harsh winds and. Super Cheap Hoop House for Winter from QT’s. Low tunnels are temporary structures that are approximately 4 feet tall and 3 to 6 feet wide. A mini polytunnel, portable plant protector, or small space polytunnel is ideal if space is limited. Product code. 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. Different shapes and sizes of polytunnels can be built, to create microclimates suited for different types of vegetation. Our most popular polythene cover incorporates an additive that increases its Thermic efficiency, yet still retains 90% light transmission. . 23m) Wide From £3,121. 50. At JF McKenna we design, manufacture and supply a wide range of domestic and commercial polytunnels, with polytunnels to suit the small gardener to the professional grower. 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. Once the frame of your raised bed high tunnel has been erected, cover it with a sheet of 6-mil plastic. Rough weight of this Greenhouse Plastic is . Screwing the Channel to Metal. Ideal for easily repairing tears in polythene covers.