---
product_id: 399042687
title: "SIPA 100 GSM Breathable Waterproof Synthetic Roof Underlayment 48” x 250' Blue"
brand: "sipa"
price: "79661 Ft"
currency: HUF
in_stock: false
reviews_count: 4
url: https://www.desertcart.hu/products/399042687-sipa-100-gsm-breathable-waterproof-synthetic-roof-underlayment-48-x
store_origin: HU
region: Hungary
---

# Waterproof Covers 1,000 sq ft UV Resistant SIPA 100 GSM Breathable Waterproof Synthetic Roof Underlayment 48” x 250' Blue

**Brand:** sipa
**Price:** 79661 Ft
**Availability:** ❌ Out of Stock

## Summary

> 🏠 Elevate Your Roofing Game!

## Quick Answers

- **What is this?** SIPA 100 GSM Breathable Waterproof Synthetic Roof Underlayment 48” x 250' Blue by sipa
- **How much does it cost?** 79661 Ft with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/399042687-sipa-100-gsm-breathable-waterproof-synthetic-roof-underlayment-48-x)

## Best For

- sipa enthusiasts

## Why This Product

- Trusted sipa brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **UV Protection:** Resilient against ultraviolet exposure for up to 60 days.
- • **Industry Approved:** Meets and exceeds ASTM standards for peace of mind.
- • **Superior Coverage:** One roll covers a whopping 1,000 square feet, making your roofing projects efficient.
- • **Unmatched Durability:** Engineered to withstand the elements without buckling or warping.
- • **Versatile Application:** Perfect for both commercial and residential roofing under asphalt shingles or metal cladding.

## Overview

The SIPA100 GSM Breathable Waterproof Synthetic Roof Underlayment is a high-performance roofing solution designed for both commercial and residential applications. With a generous coverage of 1,000 square feet per roll, this underlayment is engineered to resist water, UV rays, and extreme weather conditions, ensuring your roof remains intact and durable. Approved by industry standards, it’s the go-to choice for modern roofing projects.

## 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

## Features

- 10 square roll covers 1,000 square feet, 100GSM
- Won’t buckle, warp, or crack , Water resistant
- Ultraviolet Exposure for 60 days.
- Performance characteristics exceed - ASTM D4869, ASTM D226, TDI Listed CCRR #AC207, FBC Approved #FL17188
- Ideal for for sloped Commercial and residential roofs and roofing applications under asphalt shingles or metal cladding

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | XIJIA LTD GROUP |
| Item Weight | 22.5 pounds |
| Product Dimensions | 48 x 4 x 4 inches |
| Color | Blue |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![SIPA 100 GSM Breathable Waterproof Synthetic Roof Underlayment 48” x 250' Blue - Image 1](https://m.media-amazon.com/images/I/81kfY1ZomkL.jpg)
![SIPA 100 GSM Breathable Waterproof Synthetic Roof Underlayment 48” x 250' Blue - Image 2](https://m.media-amazon.com/images/I/91JzdT2W5qL.jpg)
![SIPA 100 GSM Breathable Waterproof Synthetic Roof Underlayment 48” x 250' Blue - Image 3](https://m.media-amazon.com/images/I/81zu5tfnm0L.jpg)

## Questions & Answers

**Q: Is this ok to use on lew slope 10 degree roof with roll roofing over it?**
A: 10 degrees is very slight. I wouldn't do it.  Check out Grace Water Shield,  or a torch down roof

**Q: How much feet can one roll cover?**
A: The roll is 1000 square feet..   allowing a bit for overlap,  you can cover about 950 square feet.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Exactly what I ordered
*by L***S on April 11, 2025*

Can't be the price work perfect for what I needed for my roof insurance company was happy and so am I

### ⭐⭐⭐ What is the permeability? is it 0.06 perms?
*by A***T on June 12, 2025*

The main reason for choosing this underlayment is because it is supposed to be breathable.I asked customer service for the breathability spec, and they responded with the attached data sheet, showing permeability of 0.06 perms, which is considered vapor impermeable. Their website doesn't seem to show the spec sheet for this exact item. I am not sure if customer service got the wrong spec sheet, but, in this case, I can't risk putting it on a house with a permeability rating below 10. Other than that, it looks like a good product, with the feel of a matte finish to walk on, which is nice.

### ⭐⭐⭐⭐⭐ roof underlayment
*by G***S on August 2, 2024*

went on roof great, stapled and looks good.

## Frequently Bought Together

- SIPA 100 GSM Breathable Waterproof Synthetic Roof Underlayment 48” x 250' Blue
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- Tyvek Sheathing Tape 1.88" x 164'

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**Shop now:** [https://www.desertcart.hu/products/399042687-sipa-100-gsm-breathable-waterproof-synthetic-roof-underlayment-48-x](https://www.desertcart.hu/products/399042687-sipa-100-gsm-breathable-waterproof-synthetic-roof-underlayment-48-x)

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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-02-16*