---
product_id: 406162274
title: "Platinum HT-B Self-Adhering Roofing Underlayment, 41 mil, High-Temp Ice & Water Shield, 100% Butyl, Nail Sealable, UV Resistant, ASTM Certified, Lifetime Warranty (36\" x 67')"
brand: "ft synthetics"
price: "€ 625.81"
currency: EUR
in_stock: true
category: "Ft Synthetics"
url: https://www.desertcart.gr/products/406162274-platinum-ht-b-self-adhering-roofing-underlayment-41-mil-high
store_origin: GR
region: Greece
---

# 41 mil thickness for ultimate durability 180-day UV resistance for long-lasting protection Nail sealable, exceeds ASTM D1970 standards Platinum HT-B Self-Adhering Roofing Underlayment, 41 mil, High-Temp Ice & Water Shield, 100% Butyl, Nail Sealable, UV Resistant, ASTM Certified, Lifetime Warranty (36" x 67')

**Brand:** ft synthetics
**Price:** € 625.81
**Availability:** ✅ In Stock

## Summary

> 🏆 Elevate your roofing game with Platinum HT-B – where strength meets smart innovation!

## Quick Answers

- **What is this?** Platinum HT-B Self-Adhering Roofing Underlayment, 41 mil, High-Temp Ice & Water Shield, 100% Butyl, Nail Sealable, UV Resistant, ASTM Certified, Lifetime Warranty (36" x 67') by ft synthetics
- **How much does it cost?** € 625.81 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/406162274-platinum-ht-b-self-adhering-roofing-underlayment-41-mil-high)

## Best For

- ft synthetics enthusiasts

## Why This Product

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

## Key Features

- • **Unmatched Durability:** 41 mil thickness ensures robust, long-lasting roof protection.
- • **Certified Performance:** Nail sealable membrane surpasses ASTM D1970 for superior reliability.
- • **Lifetime Peace of Mind:** Backed by a limited lifetime warranty for enduring trust.
- • **Effortless Installation:** Split release silicone liner enables quick, hassle-free application.
- • **Weatherproof Confidence:** 180-day UV resistance keeps your roof shielded from harsh sun exposure.

## Overview

The Platinum HT-B Self-Adhering Roofing Underlayment is a premium 41 mil thick, high-temperature waterproof membrane featuring 100% butyl adhesive for superior bonding to plywood or OSB decks. It is nail sealable, UV resistant for up to 180 days, and compatible with various roofing materials, offering a patented anti-slip surface and easy installation with a split release silicone liner. Certified to exceed ASTM D1970 standards and backed by a limited lifetime warranty, it covers 200 sq ft per roll, making it the go-to choice for professional-grade roof protection.

## Description

The FT Synthetics Platinum HT Self-Adhering Underlayment is an all-new, updated underlayment from the original FT Synthetics HTSA Platinum HT Self-Adhering Underlayment. Its upgraded features include it being a high-temperature self-adhered waterproofing membrane that features a black butyl rubber adhesive that is designed to be used as a secondary ice and water protection for steep slope roofing applications. It can be used under most roofing materials such as residential or commercial metal, primed cedar shakes, mechanically attached concrete, asphalt shingle, or composite shingles. Combined with Gripsot technology, the underlayment has a patented anti-slip walking surface with high-temperature black butyl adhesive backing that allows for both low temperature (down to 32 degrees Fahrenheit) and rising deck adhesion and high-temperature stability (up to 265 degrees Fahrenheit). Backed by its limited lifetime warranty, the FT Synthetics high-temperature underlayment has a split release silicone liner for easy removal during installation.

## Features

- 100% butyl provides bond to plywood or OSB roof decks
- Compatible with low slope roofing materials such as EPDM and TPO
- Nail sealable (meets and exceeds ASTM D1970)
- Watertight laps
- Shelf life of 18+ months
- Split release silicone liner
- 180 day UV resistance & Limited Lifetime Warranty
- Coverage Per Roll: 200 square feet (2 squares)
- Roll Width: 36 in. Roll Length: 67 Feet
- Roll Weight: 40 lbs. Roll Thickness: 41 mils

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09JQCCPML |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #166,235 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #51 in Flooring Underlayments |
| Color | Blue |
| Customer Reviews | 4.5 4.5 out of 5 stars (26) |
| Date First Available | October 18, 2021 |
| Item Package Quantity | 1 |
| Item Weight | 37.8 pounds |
| Item model number | 963000 |
| Manufacturer | FT Synthetics |
| Part Number | FTHTBSA |
| Product Dimensions | 7 x 7 x 48 inches |
| Shape | Roll |
| Thickness | 41 Millimeters |

## Images

![Platinum HT-B Self-Adhering Roofing Underlayment, 41 mil, High-Temp Ice & Water Shield, 100% Butyl, Nail Sealable, UV Resistant, ASTM Certified, Lifetime Warranty (36" x 67') - Image 1](https://m.media-amazon.com/images/I/61XjdMjRDUL.jpg)

## Available Options

This product comes in different **Item Package Quantity** options.

## Frequently Bought Together

- FT Synthetics Platinum HT Butyl Self Adhering Underlayment (Single Roll)
- ZIP System Huber Flashing Tape | Self-Adhesive Flashing for Doors-Windows Rough Openings (3.75" x 30')

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-07-07*