---
product_id: 75618026
title: "RXCB11224, ComfortBoard 80 R-6.3 Rigid Stone Wool Insulation Board, 1.5\" x 24\" x 48\", Covers 48 sq. feet, Fire Resistant"
brand: "rockwool"
price: "VT182166"
currency: VUV
in_stock: true
reviews_count: 8
url: https://www.desertcart.vu/products/75618026-rxcb11224-comfortboard-80-r-6-3-rigid-stone-wool-insulation
store_origin: VU
region: Vanuatu
---

# Vapor permeable & moisture repellent R-6.3 thermal resistance Noncombustible & fire resistant RXCB11224, ComfortBoard 80 R-6.3 Rigid Stone Wool Insulation Board, 1.5" x 24" x 48", Covers 48 sq. feet, Fire Resistant

**Brand:** rockwool
**Price:** VT182166
**Availability:** ✅ In Stock

## Summary

> 🛠️ Build smarter, safer, and cooler with Rockwool ComfortBoard!

## Quick Answers

- **What is this?** RXCB11224, ComfortBoard 80 R-6.3 Rigid Stone Wool Insulation Board, 1.5" x 24" x 48", Covers 48 sq. feet, Fire Resistant by rockwool
- **How much does it cost?** VT182166 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/75618026-rxcb11224-comfortboard-80-r-6-3-rigid-stone-wool-insulation)

## Best For

- rockwool enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Stable R-values and compressive strength ensure long-term performance
- • **Moisture Mastery:** Vapor permeable design prevents mold and condensation buildup
- • **Soundproof Sanctuary:** Excellent acoustic absorption for quieter, focused spaces
- • **Fire-Resistant Fortress:** Stone wool core contains flames, protecting your investment
- • **Superior Thermal Shielding:** R-6.3 rating slashes energy costs and boosts comfort

## Overview

Rockwool RXCB11224 ComfortBoard 80 is a 1.5" thick rigid stone wool insulation board covering 48 sq. ft., engineered for superior fire resistance, thermal performance (R-6.3), moisture control, and acoustic dampening. Ideal for continuous exterior insulation in walls, foundations, and roofs, it offers durable, mold-resistant protection while reducing thermal bridging and enhancing building envelope efficiency.

## Description

Enhance your building envelope with ROCKWOOL Comfortboard, a rigid stone wool insulation board that provides exceptional fire protection, energy efficiency, and versatility. Available in two product options to support specific structural requirements for your next project, Comfortboard 80 and Comfortboard 110 products are used with screws through strapping and insulation cladding support systems. Comfortboard enables the creation of safer, more comfortable buildings that resist moisture and reduce energy costs. It's engineered for use as exterior continuous insulation in both above- and below-grade exterior walls, under-slab, exterior-insulated stucco assemblies, and in pitched roofs.

Review: Good stuff - desertcart has been very inconsistent in stocking this and the last time I ordered it, they shipped me a box with three rolls of Hallmark brand wrapping paper in it instead of the insulation. But, with that said, it's an excellent product. This is not to be used in walls as batt insulation would be, but rather it's meant to be used on the outside of the air barrier (pressure boundary) to manage thermal bridging and the temperature of the drainage plane (a.k.a. housewrap or whatever). It's far sturdier than regular comfortbatts and far more environmentally friendly than rigid foam!
Review: Pricey But Worth It! - Very good product! Very easy to cut and install. Fit very well into my generator shed build. I love the sturdiness. Alittle in the high side as far as cost, but required the heat rating for insulation for a high heat environment!

## Features

- ComfortBoard 80 R-6.3 Rigid Stone Wool Insulation Board, 1.5" x 24" x 48", covers 48 sq. feet.
- Noncombustible and fire resistant, stone wool works to contain a fire and prevent its spread.
- Vapor permeable enabling wall systems to have superior drying potential, minimizing the risk of condensation and water accumulation. Inorganic, does not promote mold growth
- Stable long-term R-values for superior thermal performance.
- Superior compressive resistance and compatible with screw-through mechanically-supported cladding systems.
- Reduces thermal bridging through wood framing, leading to a higher-performing building envelope.
- Excellent acoustic performance. Stone wool provides excellent noise reduction and sound absorption to help you create quieter, more productive environments.
- Water and moisture repellent
- Dimensional stability to maintain performance
- Applications: Installed in above-grade walls as continuous exterior insulation (ci); Below-grade exterior-insulated foundation walls and basements; Under flat concrete slabs; One-coat and three-coat insulated stucco cladding; Wood-framed cathedral ceilings.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00E5CSSNK |
| Best Sellers Rank | #248,096 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #28 in Construction Boards |
| Color | Tan |
| Coverage | 48 sqft per bag |
| Customer Reviews | 4.3 4.3 out of 5 stars (16) |
| Date First Available | July 25, 2013 |
| Included Components | ComfortBoard Insulated Sheathing |
| Item Package Quantity | 1 |
| Item Weight | 47 pounds |
| Item model number | RXCB11224 |
| Manufacturer | Rockwool |
| Measurement System | inch |
| Part Number | RXCB11224 |
| Product Dimensions | 1.5 x 24 x 0.1 inches |
| UPC | 774783454526 |

## Product Details

- **Brand:** Rockwool
- **Item Thickness:** 1.5 Inches
- **Material:** Wool
- **Product Dimensions:** 1.5"L x 24"W
- **Recommended Uses For Product:** Thermal Insulation, Fire Resistance, Sound Insulation

## Images

![RXCB11224, ComfortBoard 80 R-6.3 Rigid Stone Wool Insulation Board, 1.5" x 24" x 48", Covers 48 sq. feet, Fire Resistant - Image 1](https://m.media-amazon.com/images/I/41Ma+o5wJrL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good stuff
*by N***H on February 13, 2026*

Amazon has been very inconsistent in stocking this and the last time I ordered it, they shipped me a box with three rolls of Hallmark brand wrapping paper in it instead of the insulation. But, with that said, it's an excellent product. This is not to be used in walls as batt insulation would be, but rather it's meant to be used on the outside of the air barrier (pressure boundary) to manage thermal bridging and the temperature of the drainage plane (a.k.a. housewrap or whatever). It's far sturdier than regular comfortbatts and far more environmentally friendly than rigid foam!

### ⭐⭐⭐⭐⭐ Pricey But Worth It!
*by G***M on December 16, 2025*

Very good product! Very easy to cut and install. Fit very well into my generator shed build. I love the sturdiness. Alittle in the high side as far as cost, but required the heat rating for insulation for a high heat environment!

### ⭐⭐⭐⭐ 👍
*by S***D on February 15, 2026*

It’s great stuff Good for insulating basement specially

## Frequently Bought Together

- Rockwool RXCB11224, ComfortBoard 80, 1.5" x 24" x 48", High-Performance Commercial Insulation
- Refrigeration Technologies RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack)
- Shurtape LS 300 HVAC Line Set Tape, 55m Length x 48mm Width, Black (Pack of 1)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-02-27*