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First Generation Costco Carport Replacement 12 mil poly cover Silver


Our 12×20 silver replacement carport roof covers are made with thread reinforced 12 mil poly material. Compatible with 10′ wide and 20′ long frames. These covers are waterproof, rot-proof and resistant to UV damage.

Features of First Generation Costco Carport Replacement 12 mil poly cover Silver

Our Silver 12×20 roof (top only)  fits most manufacturer’s 10×20 frame that measures 12 feet over the peak, 20 ft. long and 10 ft. side to side. See measurement guide on home page for proper fit. This cover has traditionally fit Costco, Shelter Logic, Bi-mart and Walmart style frames that measure 12 feet from the side bar, over the peak to the opposite side bar. This cover is 12 mil thick and waterproof. Covers are valanced with a 12 inch flap of material on each side. This adds protection from the elements and diverts rainwater.

Attach valanced canopy covers by using ball bungees. Loop cords through each grommet and connect to the frame. Because bungees stretch, they are easy to use and most of all, won’t tear the tarp. Each 12×20 top cover requires 50 6″ ball bungees. For Costco frames with 2″ pipes or frame tubes, 9″ ball bungees work best. 

Find bungee cords under products on the home page.

Purchase the valanced replacement carport top either alone or in a full kit. Kits include zippered front panel, solid back panel, and (2) side wall panels. This kit creates a fully enclosed space. Find these under Because carport frames have many manufacturers, it is important to measure you frame. See measurement guide on the home page. Each cover has rust resistant grommets every 18 inches. Rope on each corner tighten the cover for a more secure fit.

Valance tarps are waterproof, rot-proof, and UV-protected. A carport frame and cover have endless uses. Great at outdoor events, weddings and covered play areas. Also use at trade shows, camping, construction and as livestock shelters. Use carports and covers to shelter almost anything. Additionally, our clear covers turn your frame to a greenhouse.  Furthermore, need a new frame?  Visit us in Southern Oregon and see our extra strong steel carport frames. Made from 1 5/8″ 16 gauge steel poles and are in addition, manufactured in the US.

Need a stronger cover? Due to high demand, we now make tops in vinyl? Check them out. They last 10-15 years and are a long term solution. Made of 18 ounce vinyl in the same pattern as the 12 mil poly. Find these at: Need help with your size? Call us at 541-951-2861. We also have email,


  • Width:
    12 feet
  • Length:
  • Color:
  • Weight:
    6oz. per square yard
  • Thickness:
  • Material:
    Heavy Duty High Density Woven Polyethylene (or Poly)
  • Grommets:
    18 inch interval
  • Weave:
    12×14 Mesh Count

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