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1.1 oz Silpoly PU4000

$6.25 /yd


1.1 oz Silpoly PU4000

$6.25 /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 62 reviews
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.

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!



Thanks Marina!

Light and strong

The fabric is as expected. Can be bonded with seamgrip wp or fc.

Thanks for the review Julien! We're glad the seam grip worked well for your project with this 1.1 oz Silpoly PU4000. Let us know if you have questions about future projects, we're here to help!

Great material

I made a 9 x 9 flat tarp with the sil/pu poly fabric. Easy to work with, looks to be very waterproof. Quite pleased.

This is a great material for a tarp, with the PU coating it is very waterproof! We'd love to see photos of your finished tarp, be sure to tag us in photos!

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