£219. Use small cloches (plastic drinks bottles, old milk containers, etc. 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. 00. Our polytunnels are a cost-effective alternative to big, expensive glass greenhouses and small, cheap plastic-covered structures. It’s best to go for one that’s at least 6ft (1. Wind and humidity, however, together with the lack of sunshine, exacerbate the sensation of cold. Galvanizing process is now commonly used for a large array of applications, including greenhouse tubing. After a thorough examination of several of poly-tunnel greenhouses on the market today, we have found that the OGrow 2 Door Polyethylene Greenhouse is the best polytunnel available. 00. Poly Tunnel Replacement Covers We understand the frustration caused by a rip or tear in the polyethylene cover allowing valuable heat to escape the Polytunnel structure. 2 out of 5 stars 45. Replacement Covers. Greenhouse in winter. Algae are also notorious for taking up residence inside of greenhouses, where high humidity encourages rapid growth. A mini polytunnel, portable plant protector, or small space polytunnel is ideal if space is limited. Choose between polytunnel greenhouses in many sizes, with green or transparent cover, and with different types of frames. In polyethylene greenhouses and polytunnels, the venting window is throughout the ridge, in a continuous ventilation – either on one side of the ridge or both. With fittings, hinged doors on both ends, anchor plates, and super-therm 800-gauge (200-micron) polythene cover, a commercial Polytunnel will cost you in the region of $3,500. 39 watching. We're proud to be one of the very best net polytunnel covers suppliers in the UK and are able to produce one-piece sewn net polytunnel covers, which have an impressive 8-10 year lifespan. 25. Green and white – this type of polythene allows 0 % light in the tunnel. The list of plants to grow in summer in the polytunnel comprises tomatoes, peppers, greens, herbs, beans, squash and zucchinis, eggplants, okras, green onions, and melons. 2m (7 feet 2 inches) high, making it suitable to grow tall plants. A polytunnel is not a poor man's greenhouse, it is a tool that allows you to grow things more successfully than you ever thought possible. . Polytunnel greenhouse sri lanka. . Image used with permission by copyright. Also, the size of this particular small polytunnel is 6 feet long X 7 feet wide X 7 feet tall. Sun and shade: A diffused polythene sheeting on a polytunnel helps to prevent heat spots, but you may have to paint. Kale is a classic winter green and perfect for planting in summer to ensure a winter crop. Ventilation. It's good to consider all of these factors when buying a polytunnel. Polytunnel Greenhouse 4x8x2 m, 32 m², Green £525. £169. Tomatoes, garlic, zucchini, broccoli… are ones of the most popular crops can be cultivated in a s mall polytunnel. Yes in the long term a proper greenhouse is the most durable option I echo what Scroggin said about durability of the green tunnels. $219. After you have driven all of your foundation tubes into the ground, check them with a spirit level to make sure they are level. Outsunny Mini Greenhouse, Small Polytunnel Green House with Zipped Doors, Steel Frame for Garden Backyard, 295 x 100 x 80cm, Green 4. In a garden it may be different. 45m x 3m x 0. Adjust this depth based on how large your want your polytunnel to be. Read more 48 productsPoly-Tunnel Greenhouse by My Garden Product code: P889364 Features Long & spacious greenhouse Sturdy steel frame Included guy ropes & ground pegs Information This. Available in clear, frosted or green, fiberglass panels run about $1 to $2 per square foot. • 20 Meters of Industrial Irrigation Pipe – $20-25 – Make sure you buy polypipe, as opposed to. A&A Green Store Greenhouse Polyethylene Cover – Highest Light Transmission Polytunnel Plastic Sheeting CHECK LATEST PRICE A&A Green Store is the most experienced company we reviewed with more than 15 years under its belt and a focus on greenhouse plastics. Cover individual plants with horticultural fleece (or upcycle old clothing or textiles for the purpose). 0 5. Site your greenhouse east to west. Just £22. The cost of polytunnels enables any gardener to enjoy their hobby all year round at a reasonable cost. Don't forget to have the long side (12') facing the sun's path. £359. This gives it one of the most robust frameworks on this list capable of withstanding fairly harsh winds and rains. Gardening in Maine is tough. Or fastest delivery Wed, 16 Aug. RRP: £129. Polytunnel for bedding production. 9 Best Crops To Grow In A Small Polytunnel. Polytunnel Ground Anchor Kit. 3. Related Categories: Polytunnel | Garden Grow 3m X 2m Polytunnel | Cloche | G3350 | Greenhouse | Green House | Mini Greenhouse Cloche | Tunnel. UNIVERSITY ALLOTMENT POLYTUNNEL. 45m. Winter proofing a budget tunnel. Remove and recycle the lids. oGrow Large Greenhouse, Garden Polytunnel Green House, Pop Up Portable Walkin Growhouse with Metal Frame, Shelves and Plastic Cover, 190x124x249cm 4. Hi Dee, cheaper is not always better, I can only repeat, what I recommend at my polytunnel courses: 1. If you have yet to purchase a polytunnel and think you may experience extreme heat in the summer, you may also. Allow crops such as tomatoes, cucumbers, melons and aubergines to crop more successfully. Fast forward to the night before last, we get the first storm since the purchase of this unit. 8m) wide so you have enough room to move around; 8ft (2. 00. To assist with pollination. When to plant in polytunnel: March to April. 6 x 6. Check out my new book that you can pre-order now. A green or clear greenhouse will provide the best light. 3) The four holes were dug to the depth of the 'L' pieces and the arches inserted. A polytunnel will enable you to to bring a slice of the Mediterranean home, increasing the variety of crops you can grow. Crinkill House, Birr, Co Offaly Eircode R42 VX36 Tel: 057 912 0424 Fax: 057 912 0944 Email: info@polydome. - Beautify Your Green Spaces ---> Designed with a door for easy access and screened ventilation for optimum air circulation. Benefits of Using High Tunnels. It features 4x retractable windows that allow light in and a reinforced steel frame for additional stability. VonHaus 3m x 2m Walk-In Polytunnel Greenhouse with Steel Frame Grow plants, flowers, fruits and vegetables all year round with the VonHaus Polytunnel Greenhouse. Green house / Polytunnel ආරක්ෂිත ගෘහ නිර්මාණය. This structure also helps with substantial amount of sun-lighting intake. Whether you’re erecting a small greenhouse on a concrete base or a large polytunnel onto soil, it’s much easier to prepare the ground before you place the structure on top (and essential in the case of the concrete base). 95 £79. 3m Long x 33mm OD Z35 High Tensile Galvanised Tube. Discover a world of exceptional greenhouses at KSB Greenhouse. They are a cost-effective addition to your garden, protecting your vegetable crops from the weather and from pests. Our customizable 10 ft. But it’s the cover that really stands out. We offer our kit in various lengths ranging from 20 to 100 feet because we know that space and budget are primary concerns no matter the size or volume of your farming operations. Caveat: This answer assumes that the green plastic shown is pigmented green and thus transmits green light into the greenhouse. 6 x 6. Just glue and screw all the sides for your bed frame. BRAND NEW 14FT X 54FT POLYTUNNEL KIT - HEAVY DUTY PROFESSIONAL GREENHOUSE - ND. By capturing and retaining solar radiation, these tunnels are an awesome tool to have. Seedlings are planted after 2 weeks, individually and after 10 days they are ready; just make sure to maintain a. This polytunnel was not on this allotment yesterday morning, in fact I can’t figure out where it come from. Product information. Replacement polythene is sold by the meter so. Polytunnels are available in a wide range of sizes and shape configurations, so you’re sure to find the right protection for your garden or vegetable patch. Brace bars when installed are approximately 1. Our range includes 5 UV stabilized covers, both polythene and net so you can choose the best for your planting needs. The zinnias are the only flowers still showing life. 1 x 13mm pipe to garden hose connection. The tunnel houses you can buy have various options for ventilation including louvres, roof vents and doors. £219. The plastic sheeting that covers polytunnels affects heat retention, too. What I’d use down the allotment: Garden Point Green Polytunnel or the BIRCHTREE depending on what size I need. 4 – Blue-Colored. She has filled the rest of the garden with a polytunnel, a vegetable patch, a herb garden, a wildlife pond, woodland areas. 2) The back end supports were created from scaffold boards and screwed into place. 6 FT Large Walk-in Greenhouse for Outdoors, Heavy Duty High Tunnel Green House w/ PE Cover 2 Zipper Screen Doors. 00 Get it 30 Nov – 9 DecThe Classic tunnels feature a rounded, quonset design that is wind resistant and is also our fastest greenhouse to build with just a 2 – 3 hour assembly time. Row Cover Hoop House from Bonnie Plants. Are polytunnels worth it? Compared to greenhouses, polytunnel offer really good value This is especially true if you’re looking for something larger in size, as you get more growth space for your money. (3) Add to basket. The Redpath domestic series Tunnelhouse offers the home-gardener a cost-effective solution to growing your veggies and nursery plants out of season. Find out how to build a polytunnel. Available for both RF and RM licensing. Ideally the compost should be homemade. A polytunnel provides a great environment to grow an incredible assortment, including:-Fresh fruit; Vegetables; Herbs; Flowers; In fact, the environment is so successful at growing produce that around 80% of the soft fruits grown for retail in the UK are in a polytunnel! Some of the most popular fruits and vegetables that are grown in. We simply screwed in 16 C shaped brackets around the sides of the garden box. 99. අනාගත කෘෂිකර්මය modern agriculture technology 4000ft ,100% ක් සාර්ථක මාලුමිරිස් ආරක්ෂිත ගෘහය. 3m x 2m (9ft 10in x 6ft 7in) Premium Polytunnel Galvanised Frame by New Leaf™. Polytunnels are wonderful structures and good value compared to greenhouses. An outdoor marijuana greenhouse or. Polytunnel Ground Anchor Kit. Polytunnel 25mm 6m x 3m - Green £339. Chat now. 27/01/2023 . Polytunnel covers are available in clear, diffused white, green and other colours, each colour type offers a different micro-climate to be introduced into the tunnel, the most popular, being clear, opaque (diffused) white, green, and a mix of green and white. 99. Which direction should a polytunnel face? However, if you are fortunate enough to have a choice, the best position for a polytunnel is for its longest side to run from north to south This will help to avoid. 6'x 15'x 6. Take a look at our Polytunnel covers and fixing kits to find your solution. A 6 foot by 16 foot polytunnel can be bought for around $600 where the equivalent greenhouse would cost around $2,200 – but very much dependent on the framing materials and finish. 80 - $7. Now tie the cotton sheet to each tennis ball securely so that it makes one large towel that is thrown over the top of the polytunnel. 98 - $19. To clean a polytunnel from the outside, you will need: ·. There was a small green plant stoically growing in each plant pot. 20 full jet spray bits (50 piece contractor pack at Bunnings - you'll find a use for the. $50 Hoop House from The Door Garden. All our Polytunnels are concreted in place. Duwal’s Polytunnel For Growing Hot Dragon Chilli 4M Gable Height with 1000 sqft Polytunnel build on Athurugiriya, Minuwangoda for Growing Hot Dragon Chilli. A polytunnel greenhouse is a greenhouse made of PVC piping and clear poly plastic tarp. 0 /5 · 1 reviews · Contact Supplier. Yield and Quality. Buy Greenhouse online in Ireland for Low Cost. A high tunnel is an unheated structure that is typically used to extend the growing season for crops. £999. Polyethylene (PE) Assembly required. Horizontal brace bars for 12ft wide tunnel approx $72 per bay plus freight. A polytunnel is made of a specially designed sheet of polythene, they are semi-circular in shape, with a door at one or both ends. 00. A polytunnel can offer more growing space, so if you want to grow as much as possible, then a polytunnel is the better option. Outsunny Steel Large 14. (25) 79£ 9989£ 99. Make sure that you leave at least 20 inches (50 cm) between plants, and leave 4 feet (1. Purchase high quality commercial and garden polytunnels online from Premier Polytunnels, direct from a UK manufacturer. Polytunnels are so much better value than greenhouses. Because they have been immersed in a bath of molten zinc, the tubes, bolts and nuts service life is increased greatly. At only a third of the cost of a greenhouse, polytunnels are great value for money. . Use row covers or mini-polytunnels inside your greenhouse for an extra layer of protection against the cold. Polytunnels consist of a plastic sheet, which is typically either clear, opaque, or green, stretched over a series of aluminum arches. 99 postage. With proper care, even a 5m2 garden tunnel will produce enough vegetables for the whole family. Manufactured from green, heavy-duty, monofilament netting with. Polytunnel Greenhouse 4x4x2 m, 16 m², Transparent £301. VOUNOT Polytunnel Greenhouse 4x3x2m 12m² Poly Tunnels Gardening Walk In Pollytunnel Tent with Steel Frame. However, larger polytunnels can be expensive and as such, are more commonly used for commercial purposes, as the profit from selling. 3,001. 6ft Garden Polytunnel Greenhous. It has two color options, a heavy-duty reinforced mesh, 8 ventilation window spots, and a solid six-month warranty. The foil is easly attached to the polytunnel structure by hook-and-loop fastener. So, the polytunnel becomes a very damp place when this happens. . green house. Garden Point 2,5M(L) x 2M(W) x 2M(H) Green Polytunnel Greenhouse with Galvanised 19mm Diameter Steel Frame Poly. 8 ft. From Einhell to Outsunny, you'll find a wide selection of greenhouses, polytunnels, balcony greenhouses and walk in greenhouses from our outdoor brands. Am after one for xmas but oh thinks a green one would stand out less than a white/clear one. 2. Details of Polytunnel Kits Highlights What It Looks Like Read Reviews & Buy Now! Best 6 metre Polytunnel Kit: 6 metres long x 3 metres x 2 metres 6 sectioned frame on the 6-metre long version 2 metres high, 3 metres wide Super strong 25mm galvanized anti-rust 0. Note that green polytunnel covers do not let enough light permeate through the tunnel This makes transparent covers a much better option. Hanwella Town, Western. 6ft Walk in Greenhouse. 2 out of. Our aim to supply best quality and value polycarbonate polytunnels and greenhouses in Ireland Polytunnels are wonderful structures and good value compared to greenhouses. Best polytunnel overall: BIRCHTREE 6M (L) x 3M (W) x 2M (H) Polytunnel Greenhouse Pollytunnel. Many are green but there are also some interesting varieties with reddish coloration. 4 Options From £29. . Our Classic Pro Caterpillar Tunnel includes a 16-inch Lift Kit for added height, plus Wind Bracing and a Solid Center Purlin for added strength and rigidity, as well. 44m) WidePolytunnel & Canopy Covers. They bought the farm in 2004 and subsequently installed the polytunnels, windbreaks and caravans for up to 250 workers. If the soil on site is not ideal, raised beds will likely be your only option. See moreA polytunnel is a polyethylene tunnel elongated and stretched out in a long caterpillar, semi-circular shape. 4. Welcome to Polyeco Greenhouses! We understand that choosing the right greenhouse or polytunnel for your needs can be overwhelming, with so many options on the market. Find out how to build your own, in our guide. Garden Grow Polytunnel (3 x 2. £44. Only use clear plastic if you use greenhouse for germinating seeds and growing starters for transplanting outdoors. PHI VILLA 26x12x6. Year-Round Growing. 45L x 2W x 2H (m); Assembly required NOTE: Not suitable for bad weather conditionsDon't know how many you would need but keep in mind that they kill everything. A 10ft wide polytunnel is a popular choice for home gardeners and allotment holders. 8Ft (2. Giving your patios. £9999. Constructed from durable polyethylene, this green polytunnel connects with ties for easy assembly and stronger, longer lasting life span. Available as full-height door blinds or ‘above gate’ door blinds. Some poor soul is going to very disappointed today. I find that a 1:1 mix is ideal. Only 1 left in stock - order soon. Here’s what you’ll need for one greenhouse measuring 3½ by 8 meters: • 8 Steel Star Pickets (fence posts) – $7-10 – Try to find the taller posts but anything over 120cm will do just fine. 5 feet for use at the top as shown by E and F in the greenhouse plan below. It contains the same heavy-duty steel framework as our popular Hobby Plus - Easy-Build Polytunnel, but without the added. They’re durable, low-maintenance, and designed for high loads and optimum production. Potatoes grow well in polytunnels as they can be protected from the elements, meaning their growing season can extend into the depths of winter. 7' or 7. « Reply #8 on: October 11, 2011, 19:59 ». Spray the outside of the polytunnel first with water using a hose with jet attachment, this will start to loosen any dirt or algae. there are large tarps now same green mesh but with eyelets, my plan is to build a wood frame over my polytunnels and batten the tarps tight. This spacious Poly-Tunnel Greenhouse is a safe and secure place to store and grow your fruit, vegetables and plants. 99. Step by step including parts required and cost of materials. Stock photos, 360° images, vectors and videosSome things I tried in the polytunnel were because I had one or two plants left over, after planting the majority outside. With its steel connecting joints to create a solid frame, the PVC wrapped cover provides extra protection and warmth to your greenhouse tunnel, while the included guy ropes and ground pegs will ensure the entire structure is. Perfect Tomato Greenhouse: Cold frames are designed to provide certain plants with more heat. 99. Wash and remove the labels from the bottles (not necessary, but it ends up looking nicer). 5m wide – $17/m; source gravel if required – black plastic $40 and excavation if required. The polytunnels you are looking at (with the green cover which includes a roll-up blind door) are only really suitable to be used as temporary covers for short periods of time on sheltered sites – These polytunnels will not stand up to being placed on a permanent site because of the lack of structural stability and the. Polytunnels coverings are typically made out of plastic polythene with an added UV. 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. 0 out of 5 stars 1 rating. 4 out of 5 Stars. NB!So cheap green polytunnels are ok for a season or two providing you don’t have too many storms or have a sheltered garden, but I wanted something that could last for many years. Had to replace one of them. But if you don’t yet have your own compost, be sure to source and buy a peat-free variety. Polytunnels are generally cheaper than greenhouses due to their more lightweight build and cost-effective materials. Conclusion:Select A Size Of Polytunnel 6ft (1. Small Poly Tunnel from One Hundred Dollars a Month. 99. If you live in a hot region, a green plastic greenhouse will let in 78. To assist with pollination. Carrying out such maintenance not only ensures the best growing conditions are kept, it helps stop pests and damage to produce from the elements too. Remove and recycle the lids. The smallest greenhouse available is 2m (6 feet 6 inches) long and can be extended up to 20m (65 feet 7 inches) long, in 2m (6 feet 6 inches) increments. 99. The polytunnel is fairly clear in colour the green look is from the reinforcing mesh. . A result of 9 to 5% effectiveness was achieved by the farm level factors, price/farm income, work satisfaction, agrobiodiversity and resource use. Polytunnel Greenhouse 4x6. ) in height and often much larger. Heat retention: Greenhouses often require more heat during the winter months, whereas a polytunnel covered with a Thermal polythene and without the drafts of a greenhouse, can help if you’re considering over-wintering crops. A cold frame is the traditional way of supplementing a greenhouse. Browse this range of polytunnels brought together from leading UK online Garden shops. The Importance of Ventilation in a Polytunnel. 40 sold. With a polytunnel greenhouse, you are able to get an effective and durable greenhouse cheaply so you can start growing the vegetables, fruits and flowers you like. Horizontal brace bars for 16ft polytunnels come standard with crop hangers and are approx $127. With a polytunnel greenhouse, you are able to get an effective and durable greenhouse cheaply so you can start growing the vegetables, fruits and flowers you like. 3) The base was then divided into 3 growing areas and walkways left at either side of the central growing area. In this video we show you how to build a polytunnel from Premier Polytunnels in the UK. Premier Polytunnels offer a wide range of polytunnel netting including fruit cage netting, ventilation netting, windbreak and anti-bird netting. Sun and shade: A diffused polythene sheeting on a polytunnel helps to prevent heat spots, but you may have to paint. Sowing broad bean in tunnels. Low price agricultural tent green house Polytunnel plastic tunnel pe Single-Span greenhouse for sale $2. 5x17m) and they served me well except that their 1in/2. French beans, runner beans, sweetcorn, cabbage and bedding plants for borders all thrive under cover at the beginning of their growth cycle, ensuring your crops get off the a successful start. An industrial strength tube ideal for adding extra supports or creating structures within a polytunnel. New shopping malls rise above the plastic. How to assemble a polytunnel. 6ft Garden Polytunnel Greenhous. 5m for the centre, mark it on the poly so it is easy to centre on the board. That’s good for bell peppers, and really good compared to field production,” she says. If you don’t you’ll risk breaking or putting holes in your structure before you even begin. 5 cm. Add 2 more pieces of 1. ආරක්ෂිත ගෘහයේ. Plan your sizing. 64 /box (5) Model# HYWSCWP-868FZB5WDV0. Steps for constructing basic polytunnel greenhouse: This should give you a basic enough structure to start working in a greenhouse. Step-over fruit trees – usually apple and pear trees – are grown as low as 1ft (30cm) off the ground and spread laterally to fill thin strips of space in allotments and. First, attach the inside to the side. ie Web: How to automate poly tunnel Sri Lanka 0 719 719 119අඩු මුදලකින් 100% ක්ම හරියට අඩු වියදමකින්. STEEL FRAME: The large polytunnel's galvanised steel frame is solid and rust resistant. All the polytunnel covers that we supply have a 5 year guarantee against UV degradation and. By capturing and retaining solar radiation, these tunnels are an awesome tool to have. Ground preparation. It can be used for hardening off plants, taking cuttings and shielding plants from the worst of the winter. Outdoor lighting can be used to provide you with more time in the greenhouse or it can be used to affect the growth of your plants. View More. In this video I show you how after some testing iv come up with a method to make to the hoops for a hoop house from pvc pipe without connectors which makes i. The specially developed cover provide optimal growth conditions. Ventilation. If you only have a small garden, a polytunnel might look out of place and overbearing. Likewise the 105′ GrowHoop can hold 100′ of growing. Only fittings included. 99 with 24 percent savings -24% $ 219. 80. 74m wide and in four lengths: 4m, 6m, 8m and 10m. . They’re also much easier to move and to reassemble compared to a greenhouse. It features 4x retractable windows that allow light in and a reinforced steel frame for additional stability. White is usually used where the hoop house may in fact be covering chickens or other animals. 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. Polytunnels provide these cut and come again crops the perfect growing environment. #plasticrepair #poly. The first and most important step in maximizing the space is making sure that I use it all year round. Polytunnel Kit For Sale In Australia. 99. The Polytunnel Handbook. But once you've decided to invest in a polytunnel, there are many. There are lots of ways to control the temperature of a greenhoue and polytunnel, but most of them are semi-permanent. Case study → Greengrow Agriculture’s Shade House Counstruction 600 sqft white color 50% shaded net house build on Padukka area for hardening the tissue culture plants. However, there’s still some amount of variety in shapes; they can also be shaped like domes or tents. A cold frame is the traditional way of supplementing a greenhouse. 45m. You might be better off getting a small garden greenhouse, such as a mini greenhouse. Minimising wastage. When it gets colder, the condensation in the tunnel freezes and ice crystals develop on the inside of the plastic and in the soil. 30/m $165; Poly plastic 7. 8 x 6. $80 delivery Oct 16 - 19. This film allows 0% light transmission. However, there is considerable variation in shape; they can also be shaped like domes or tents. Welcome to Green Living Concepts Supplier of Standard Poly Tunnels, Custom Made PolyTunnels, Commercial PolyTunels & Raised Beds - NATIONWIDE DELIVERY At Greenliving Concepts PolyTunnels we are passionate about what we build and grow within our own Polytunnel and believe its the little details that turns the ordinary into the. Free delivery. Natural airing lets fresh air come in and releases humidity and heat from the top of the greenhouse – and this natural airing is good enough ventilation for most geographies. I was attracted to the edge of a polytunnel by a splash of bright colour. The stones will absorb and retain heat from the sun and slowly release it through the night the night, therefore keeping. A similar sized British made commercial quality polytunnel costs less than £700 from our website. Visit our website for sizes and prices. Polytunnels are usually shaped, as the name implies, like a tunnel. 5m) tall to let in plenty of light. New and used Greenhouses for sale in Nochchiyagama, Sri Lanka on Facebook Marketplace. Birchtree Polytunnel (6 x 3 x 2 m) 2. Use scissors to cut off the bottom of each bottle. Potatoes. It’s strong and sturdy, with a powder-coated steel frame and a PE cover with double-stitched seams. Air. Galvanizing gives the elements resistance to corrosion. 6m x 3m (19ft 8in x 9ft 10in) Premium Polytunnel Galvanised Frame by New Leaf™. 4 out of 5 stars 66. So, the polytunnel becomes a very damp place when this happens. 99. Greenhouses and polytunnels: make the right choice. 3 x 'T' 13mm connections. 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. Add to basket. €10. Polytunnels on the other hand provide outstanding value for money.