1.1 oz Silpoly PU4000

$7.75 /yd


1.1 oz Silpoly PU4000

$7.75 /yd

  • WHOLESALE  - Looking to buy larger amounts at 25-40% savings? Click  HERE for full roll sales.

    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 

    Data Sheet

    Download here


Customer Reviews

Based on 65 reviews
Phil Jones
Great for pack covers

I recently purchased some silpoly 1.1 Oz pu 4000 to make a pack cover. The material it is a little heavier than regular soap Ali 1.1 Oz but it works great as a pack cover.

Excellent service and product

Great materials and excellent service, with super prompt delivery to Australia.

Thanks so much JWP! We're glad you were able to receive your materials quickly across the pond! We'd love to see what you're creating, be sure to tag us on social media!

Doug Keown
Second Tarp

The Silpoly PU4000 is perfect for my tarp use! Easy to work with and is nice and lightweight. Will be putting it to the test this June on an 8 day trip to the Golden Trout Wilderness area.
The folks at RBTR got my order to me in good condition, with reasonable shipping and in a timely manner. I live in Hawaii so thats a big plus.

Thanks for your review Doug! The 1.1 oz Silpoly PU4000 is awesome for tarps. We'd love to see photos of your creation, here is link to upload photos if you'd like to share!

Barry Fox
Pack Cover Kit

Loved the ability to pick the perfect fabric type and color for this easy project. Saved big $$ over buying ready made.

When you make your own gear, you'll save tons of $$$ and get exactly what you want. We'd love to see photos of your finished pack! Here is a link if you'd like to share any photos with us.

Phillip Bubb
efficient response

I have not used the material yet, but was impressed by the efficient despatch and the short delay before it arrived. I plan to order more for my small personal use.

Thanks for your review Phillip! Your order should be on its way to you shortly. We can't wait to see what you create!

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