Greenhouse Plastics.ca is located at #14 - 4970 Polkey Rd., Duncan B.C. in the Erik Melgaarde Industrial Park, Vancouver Island. Our company has been supplying polycarbonate twinwall sheet material on the West Coast for 24 years (please scroll down for on-line ordering). We now offer free delivery from our warehouse between Victoria and Nanaimo BC if we schedule (rush orders, may be billed a small scheduling charge). We have sheets sized 4ftx8ft, 4ftx10ft, 4ftx12ft and 4ftx16ft.
Our 8mm thick, clear polycarbonate twinwall is used for custom built greenhouses, cold frames, solariums, gazebos, patio overhangs, covered walks, skylights, window and door glazing, lightweight office partitions, outbuilding roofing and other gardening, farming and industrial applications. Take a quick look at our simple install guide and our writeup on best practices for a successful installation. All of our polycarbonate twinwall is warranted for 15 years and includes a 50um UV layer of protection. We deliver to all over Vancouver Island and we can arrange delivery for you throughout BC. We custom cut. We can do a few cuts for free, but cut lists with tooling setups have a small fee. Happy to help! Our industrial shop in Duncan BC is a full service facility and open to the public by appointment only as we are farmers as well. 
Key Points: *Polycarbonate twinwall insulates, reducing heating costs in winter while minimizing excessive heat in summer (R value of 1.8) *Offers 90% light transmission, diffusing light. Light is scattered becoming more diffused, so it penetrates into more places in your greenhouse than light does through a glass panel, reducing sunburn in your greenhouse *Virtually unbreakable, unlike glass *UV resistant (50um UV protection) *Lightweight and easy to handle (4x8 sheets are 9.6lbs each) *Simple to install with one person *Long term solution (20+ years) *Approx. 25lbs per square foot snow load rating, 8mm thickness is perfect for Southern BC *Performs extremely well in high winds *The material is strong enough to walk on (rafters only), but not without safety ropes, it is slippery! 
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ORDERING: Items noted below are in stock now. EMT (E-Transfer) orders, save 1.7% credit card fees! (Please call 250 888 9982 to set that up). You can also place an on-line order at the bottom of the page if you are paying by credit card. Thank-you.
Vancouver Island residents can place an order directly from our web site. North of Nanaimo, BC, we can arrange shipping via ACE Courier on your account or ours. Please inquire for cost of shipping to other locations on Vancouver Island. We can ship BC wide economically! Material samples are available outside our shop at Unit 14 - 4970 Polkey Road, Duncan, BC, V9L-6W3. Pickup is available by appointment only. Weekends *might* be possible, depending on farm work/family schedules. ITEMS ON THIS WEB SITE ARE LOCATED IN OUR DUNCAN, BC WAREHOUSE. VISITATION BY APPOINTMENT ONLY. THANK-YOU. WE DO VANCOUVER ISLAND INSTALLATIONS OF POLYCARBONATE SHEETING AND RETROFITS OF OLD GREENHOUSE FRAMES! (See IMAGE 1, IMAGE 2, IMAGE 3). Simply contact us by phone at 250 888 9982 or email. Happy to provide a quote! For BC-wide shipping we can crate your order to ensure it's safe arrival. Crating typically adds $90 to the cost of your shipment. (See IMAGE 1, IMAGE 2, IMAGE 3). We can try various shippers on your behalf or feel free to send one to us for pickup. We will have our crate ready to go! |
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 1 x ClearCO 8mm Polycarbonate Twinwall, CLEAR, 4x8, 32sq. ft. = $96 |
1 x ClearCO 8mm Polycarbonate Twinwall, CLEAR 4x10, 40sq. ft. = $124 |
1 x ClearCO 8mm Polycarbonate Twinwall, CLEAR, 4x12, 48sq. ft. = $148 |
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1 x ClearCO 8mm Polycarbonate Twinwall, CLEAR, 4x16, 64sq. ft. = $208 |
 1 x ClearCO H Channel Sheet Joiner, CLEAR, 12ft. Lengths = $36 |
 1 x ClearCO U Channel Sheet End Cap, CLEAR, 12ft. Lengths Only = $16 |
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1 x ClearCO H Channel Sheet Joiner, CLEAR, 16ft. Lengths = $46 |
 1 x Shipping to Saanich Peninsula/Saanichton, Sidney = $80ea. |
1 x Shipping to SOOKE = $80ea. |
 1 x Heavy Duty Plasticade® Deluxe Farm Market Sign Stand, 24x36 Sign, Stand is 28x46 = $120ea. |
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4X8, 4X10, 4X12 ONLY (PAYMENT BY EMT SUBTRACT AN ADDITIONAL 1.7%, PLEASE CALL OR PLACE YOUR ORDER BELOW, THANK-YOU). |
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 10 x ClearCO 8mm Polycarbonate Twinwall, CLEAR, 4x8, 32sq. ft. = $86.40ea. |
10 x ClearCO 8mm Polycarbonate Twinwall, CLEAR 4x10, 40sq. ft. = $111.60ea. |
10 x ClearCO 8mm Polycarbonate Twinwall, CLEAR 4x12, 48sq. ft. = $133.20ea. |
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©2025 The Upgrade Path Inc., DBA ClearCO.ca. Email: clearco.ca.manufacturing@gmail.com
Address: #14-4970 Polkey Rd., Duncan BC, V9L 6W3. Talk/Text: 250 888 9982