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1.1 oz Silpoly PU4000 - Full Roll


1.1 oz Silpoly PU4000 - Full Roll


  • Placing a wholesale order shouldn't be hard, so we made it easy...

    For the first time, order  full rolls of material straight through the site. No emails, phone calls, or wasted time. And did we mention wholesale pricing? 


    1) Due to bulk size,  exact shipping costs will be billed for all roll goods. Once your order is ready, we'll send you a link to pay for shipping. 

    2) Discount codes are  not allowed for any wholesale purchase. If you use a discount code, the portion applied to any wholesale line item will be added back to the shipping invoice we send you. 

    NOTE - This is a full roll  of 1.1 oz Silpoly PU4000 (125 yds). Looking for smaller amounts? Click HERE for sales by the yard. 

    This is the high water-resistance version of our 2nd generation 1.1 oz Silpoly line of coated materials. This fabric is coated with a silicone/PU layer on one side, then a multi-pass PU coating on the other to create a highly waterproof/non-breathable fabric.

    Same silpoly benefits of lower water absorption and increased UV resistance, but with a much higher waterproof rating. The PU4000 also has less bias stretch, making it easier to sew.

    Great for projects such as tent/shelter floors, ground sheets, tarps, ponchos, gear sacks, pack covers, or any application where lightweight, highly waterproof/windproof fabric is needed.

    * Note - shiny side is PU4000 and dull is sil/PU. If seam sealing this fabric, you will need a sealant intended for PU coated materials (e.g. Seam Grip). 

    Want to quickly compare all our lightweight coated/non-breathable fabrics? Check out the "Fabric Comparison Guides" on our FAQ page. 

  • Product Details
    Width ~58'' usable, selvedge trimmed
    Weight  1.1 oz/yd 2 (*~1.4 oz/yd 2 with sil/PU + PU4000 coating)
    Denier 20D x 20D 
    Finish/Coating Sil/PU mix one side, multi-pass PU4000 other side
    Hydrostatic Head (i.e. waterproof rating) ~4000 mm 

Customer Reviews

Based on 73 reviews
Reggie Garrett
Great fabric

Purchased this to sew up custom ground cloths for my tarps. It sewed up so easy. Fabric is great to deal with. And the ground covers / stuff sacks are really nice. Love this stuff.

Excellent Ground sheet material

This was my first MYOG project and I made a custom ground sheet for my odd shaped tent. The PU silpoly was extremely easy to work with and the project turned out great. Even had enough to make a small stuff sack for it. RSBTR is awesome! Shipping was fast, the site has all the info you need to get started, and they have an awesome selection that’s hard to find elsewhere.

Thanks for your awesome review Dan! We're glad you found the fabric you needed for a ground sheet!