DIY Greenhouse 3m to 3.5m wide, Waterproof


We now offer a great Waterproof DIY Gardening Tunnel with a 5-year manufacturers warranty. The construction is light and easy to assemble. It is made from HDPE (high-density polyethylene) tubes, aluminium and Knipol, a reinforced waterproof plastic sheeting that does not discolour.

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We now offer an amazing Waterproof DIY Greenhouse with a 5-year manufacturers warranty.

Keep bugs and birds off your precious vegetables and have much more control over the success of your gardening efforts.


This waterproof gardening tunnel or greenhouse is easy to assemble and can be moved if necessary. A FREE Tunnel Installation Guide can be downloaded here.

The construction is relatively light because it is manufactured from  HDPE (high-density polyethylene) tubes, aluminium and long-lasting Knipol waterproof shade netting. 

HDPE tubes are uniquely oval-shaped and are reinforced to prevent collapse. The typical lifespan of HDPE is 50 years.

The greenhouse is covered in Knipol, a unique waterproof shade net fabric combining shade netting with a clear laminated high-density polyethylene waterproof coating. Knipol is a reinforced waterproof plastic sheeting that does not discolour. Knipol is a product of the well-known South African company Knittex.

Y-standards are driven into the ground serve as anchors for the arch poles. The HDPE arch poles and the aluminium spacers are fitted together to form a strong durable construction that is virtually maintenance-free. 

The dome shape can resist the wind very well. Please consult with us if you stay in an extremely windy area.

Our greenhouses come in a wide variety of sizes: small enough for your garden; large enough for your farm or smallholding.

Advantages above a permanent steel structure

  • No permanent foundations
  • Portable
  • No rust issues
  • No painting
  • Hose down to clean

Technical details

  • Width: 3-3.5 meters ( other widths available here)
  • Length: 3-12 meters
  • Height: 2.2-2.4 meters depending on the width
  • Special requests welcome.

Parts included in the standard kit

  • HDPE plastic arches
  • Aluminium spacers
  • Code 25 Knipol waterproof shade netting
  • Front and back ends according to your choice
  • Y-standards
  • Cable ties.
  • A ground cover is not included.

Our 5-year manufacturer’s warranty includes materials and workmanship.

Additional information


3m, 4.5m, 6m, 7.5m, 9m, 10.5m, 12m



Front end / Back end

Zip Front / Solid Back, Zip Front / Zip Back, Zip Front / No Back, No Front / Solid Back, No Front / Zip Back, No Front / No Back


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