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SIPA

SIPA 100 GSM Synthetic Waterproof Roof Underlayment 48” x 250' (1)

  • Based on 102 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Sep 5
Order within 1 hour and 40 minutes
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Item Package Quantity: 1


Features

  • covers 1,000 square feet, 100GSM
  • Performance characteristics exceed - ASTM D4869, ASTM D226, TDI Listed CCRR #AC207, FBC Approved #FL17188
  • Ultraviolet Exposure for 60 days.
  • Ideal for for sloped Commercial and residential roofs and roofing applications under asphalt shingles or metal cladding
  • Wont buckle, warp, or crack , Water resistant

Description

SIPA Synthetic Roofing Underlayment 100 GSM is a lightweight synthetic roof underayment designed to enhance the life of a roof system through superior water resistance and UV protection Coil layer is waterproof layer and anti- aging layer, fluctuation two sides is to enhance blinding layer, firm, and reliable, does not have become warped edge, no empty drum, double waterproof, is a new type of waterproof materials. Benefits of 100 GSM Unique Non-Woven Top Surface Fabric Allows For Enhanced Traction Water Resistant Performance Characteristics Exceed ASTM D4533 & D226

Manufacturer: ‎XIJIA LTD GROUP


Item Weight: ‎21.2 pounds


Product Dimensions: ‎48 x 4 x 4 inches


Item model number: ‎D4533


Color: ‎Gray


Material: ‎non woven PP laminated with PE plus 4% UV and water resistant adhesive


Item Package Quantity: ‎1


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: November 23, 2020


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Sep 5

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Used it on my Shed 8x20
Item Package Quantity: 1
Works well, quality is good, does not rip easily, it's not slippery when I was stepping on it while on roof. But use roofing shoes, step on those plastic nail caps.
Reviewed in the United States on June 3, 2025 by MarkS4
    • Love it! Waterproof. Lightweight, tough material.
Item Package Quantity: 1
The media could not be loaded. Love this Sipa roof underlay material. Waterproof and easy to install.
Reviewed in the United States on June 23, 2025 by UnoMasToMas
    • Roofing
Item Package Quantity: 1
Worked good
Reviewed in the United States on April 29, 2025 by John Fenner
    • Roof repair
Item Package Quantity: 1
Had the old style covering on my roof. Re-did the roof and decided to try this material as it was less weight to bring up on the roof. Worked great and easy to use. I am happy with it.
Reviewed in the United States on February 4, 2025 by Amazon Customer
    • Amazing product!
Item Package Quantity: 1
It is by far the toughest roof underlayment I have ever used. Lays really flat and stands up to the elements. I have had it on my shop for 2 years, couldn't get back to working on it and it has been amazing.
Reviewed in the United States on May 2, 2024 by arlan wiggins
    • Yes. Highly recommend!
Item Package Quantity: 1
I really like this stuff. Will buy more for my next project. Excellent value. Highly recommend!!
Reviewed in the United States on March 30, 2024 by Ron D.
    • Ease of use
Item Package Quantity: 1
I actually actually use this as a weed barrier
Reviewed in the United States on April 23, 2024 by Maxine Schvaneveldt
    • Great durable product. Easy to install!
Item Package Quantity: 1
Our community is recovering from a devastating wildfire. We built a 20’ x 40’ covered area for our hot tub and patio area. We are in the process of rebuilding the house but aren’t ready for roofing. This product has weathered direct rain and sun beautifully, and stays smooth. It was super easy to install and we will be using this on all of our outbuildings !! ... show more
Reviewed in the United States on May 30, 2021 by Jamee Savidge

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