---
product_id: 59029898
title: "500 sqft Aluminum Foil Barrier Insulation Sauna Vapor Barrier Waterproof Strong"
brand: "mws"
price: "R5128"
currency: ZAR
in_stock: true
reviews_count: 8
category: "Mws"
url: https://www.desertcart.co.za/products/59029898-500-sqft-aluminum-foil-barrier-insulation-sauna-vapor-barrier-waterproof
store_origin: ZA
region: South Africa
---

# Tear-resistant strength 97% radiant heat block 500 sqft coverage 500 sqft Aluminum Foil Barrier Insulation Sauna Vapor Barrier Waterproof Strong

**Brand:** mws
**Price:** R5128
**Availability:** ✅ In Stock

## Summary

> 🔥 Elevate Your Sauna Game with Unmatched Insulation!

## Quick Answers

- **What is this?** 500 sqft Aluminum Foil Barrier Insulation Sauna Vapor Barrier Waterproof Strong by mws
- **How much does it cost?** R5128 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/59029898-500-sqft-aluminum-foil-barrier-insulation-sauna-vapor-barrier-waterproof)

## Best For

- mws enthusiasts

## Why This Product

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

## Key Features

- • **Industrial Strength:** Woven polyethylene scrim ensures it withstands the test of time.
- • **Fire Safety Certified:** Passes ASTM fire tests for peace of mind.
- • **Versatile Applications:** Perfect for sauna insulation and waterproofing needs.
- • **Double-Sided Durability:** 99.9% pure aluminum for unbeatable insulation.
- • **Ultimate Sauna Protection:** Transform your sauna experience with our waterproof barrier!

## Overview

The MWS500 sqft Aluminum Foil Barrier Insulation is a robust solution designed for sauna waterproofing and insulation. With a generous coverage of 500 square feet, this double-sided aluminum barrier effectively blocks 97% of radiant heat, ensuring optimal temperature control. Its industrial-grade strength, reinforced with woven polyethylene scrim, guarantees tear resistance, while passing stringent ASTM fire tests for safety.

## Description

desertcart.com : MWS 500 sqft Aluminum Foil Barrier Insulation Sauna Vapor Barrier Waterproof Strong : Patio, Lawn & Garden

Review: Good chit - Solid barrier, shipped well without damage to the ends of the heavy roll. Sturdy yet easy to work with. I’d buy again.
Review: Excellent barrier for sauna - I Highly recommend this foil barrier for a sauna. It is very strong, and I never had any concerns over it ripping or puncturing. It will puncture if you jab it with something pointy, like a screwdriver. But you can put a lot of tension on it when pulling it tight and it doesn't rip. I used a staple gun with stainless steel staples to attach it to the studs. To install it around the walls, I used another person to hold the roll of foil and went horizontally around all 4 sides in 1 pass. Then I added furring strips, and put basswood t&g onto the furring strips, which makes a gap between the foil and the wood. This is to let moisture escape. After using the sauna for 3 months, it seems to be holding up well, although I can't see the majority of it because its behind the wood. The sauna holds heat extremely well, and I have no moisture issues that I can tell.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B075RHPWFK |
| Best Sellers Rank | #67,067 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #131 in Sauna Accessories |
| Customer Reviews | 4.5 4.5 out of 5 stars (81) |
| Is Discontinued By Manufacturer | No |
| Item Weight | 15 pounds |
| Manufacturer | MWS |
| Product Dimensions | 48 x 5 x 5 inches |
| UPC | 821949631014 |

## Product Details

- **Brand:** MWS
- **Item Thickness:** 0.01 Inches
- **Material:** Aluminum
- **Product Dimensions:** 1500"L x 48"W
- **Recommended Uses For Product:** ["SAUNA INSULATION", "SAUNA WATERPROOFING"]

## Images

![500 sqft Aluminum Foil Barrier Insulation Sauna Vapor Barrier Waterproof Strong - Image 1](https://m.media-amazon.com/images/I/514z194fSoL.jpg)

## Questions & Answers

**Q: do you have this in a 1000sqft length "25.5" None Perforated. double sided with cardboard in between. or similar?**
A: YES 1000 25.5 INCH PERF TYPE
1000sqft (25.5 inch Rafter Cut) of NASA TECH Commercial Grade Perforated No Tear Green Energy Radiant Barrier Reflective Insulation Solar Attic Foil Roof Attic House Wrap SCIF RIFD …

**Q: Can i use it for low slope roof vapor barrier?**
A: YES VERY IDEAL FOR ROOFING UNDERLAYMENT

**Q: What is the thickness measurement?**
A: Sorry couldn’t find thickness. Excellent product. Not flimsy at sll

**Q: Is it temperature rated? And if so, what is the range?**
A: CLASS 1 CLASS A ASTM FIRE RATED

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good chit
*by V***R on January 3, 2026*

Solid barrier, shipped well without damage to the ends of the heavy roll. Sturdy yet easy to work with. I’d buy again.

### ⭐⭐⭐⭐⭐ Excellent barrier for sauna
*by M***W on February 18, 2026*

I Highly recommend this foil barrier for a sauna. It is very strong, and I never had any concerns over it ripping or puncturing. It will puncture if you jab it with something pointy, like a screwdriver. But you can put a lot of tension on it when pulling it tight and it doesn't rip. I used a staple gun with stainless steel staples to attach it to the studs. To install it around the walls, I used another person to hold the roll of foil and went horizontally around all 4 sides in 1 pass. Then I added furring strips, and put basswood t&g onto the furring strips, which makes a gap between the foil and the wood. This is to let moisture escape. After using the sauna for 3 months, it seems to be holding up well, although I can't see the majority of it because its behind the wood. The sauna holds heat extremely well, and I have no moisture issues that I can tell.

### ⭐⭐⭐⭐⭐ Solid quality!
*by T***S on January 9, 2026*

This feels like a really nice product - as thick as you'd expect it to be. It 100% is not perforated - which would obviously miss the point of a vapor barrier. Also, this product is definitely not meant to be used exposed, without a wooden covering (e.g. T&G pine or cedar) on top of it. Excited to fully cover my new sauna with this!

## Frequently Bought Together

- MWS 500 sqft Aluminum Foil Barrier Insulation Sauna Vapor Barrier Waterproof Strong
- TapePlus 1 Pack Professional Grade Aluminum Foil Tape - 2 Inch by 210 Feet (70 Yards) - Perfect for HVAC, Sealing & Patching Hot & Cold Air Ducts, Metal Repair, and Much More
- Buck Professional Grade Aluminum Foil Tape - 2 Inch x 216ft (72 yd) 3.6 Mil - Ideal for HVAC, Metal Repair & Insulation - Heat Resistant & Waterproof - Perfect for Sealing Ductwork & Vents

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**Shop now:** [https://www.desertcart.co.za/products/59029898-500-sqft-aluminum-foil-barrier-insulation-sauna-vapor-barrier-waterproof](https://www.desertcart.co.za/products/59029898-500-sqft-aluminum-foil-barrier-insulation-sauna-vapor-barrier-waterproof)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-20*