---
product_id: 207715556
title: "Rockwool, Roxul, Mineral Wool 8 lb Density Soundproofing Fire Resistant Insulation Batts, 2\" Thick 2' x 4', (7-Pack)"
brand: "brb products"
price: "¥353293"
currency: JPY
in_stock: true
reviews_count: 7
category: "Brb Products"
url: https://www.desertcart.jp/products/207715556-rockwool-roxul-mineral-wool-8-lb-density-soundproofing-fire-resistant
store_origin: JP
region: Japan
---

# Water repellent & vapor permeable Fire resistant up to 2150°F, non-combustible 8 lb density for max sound & thermal block Rockwool, Roxul, Mineral Wool 8 lb Density Soundproofing Fire Resistant Insulation Batts, 2" Thick 2' x 4', (7-Pack)

**Brand:** brb products
**Price:** ¥353293
**Availability:** ✅ In Stock

## Summary

> 🛡️ Rock-solid insulation that blocks noise, heat, and fire—because your space deserves the best.

## Quick Answers

- **What is this?** Rockwool, Roxul, Mineral Wool 8 lb Density Soundproofing Fire Resistant Insulation Batts, 2" Thick 2' x 4', (7-Pack) by brb products
- **How much does it cost?** ¥353293 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/207715556-rockwool-roxul-mineral-wool-8-lb-density-soundproofing-fire-resistant)

## Best For

- brb products enthusiasts

## Why This Product

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

## Key Features

- • **Durable & Rigid:** Holds shape, resists compression, and endures vibration for lasting performance.
- • **Premium 8 lb Density:** Superior mass packed tight for elite soundproofing & thermal insulation.
- • **Unmatched Fire Safety:** Non-combustible stone wool withstands extreme heat without toxic smoke.
- • **Moisture-Resistant Build:** Water repellent and vapor permeable to prevent rot and maintain structure.
- • **Energy-Smart Climate Control:** Stable R-value slashes heating & cooling costs year-round.

## Overview

Rockwool 8 lb Density Mineral Wool Insulation Batts deliver professional-grade soundproofing and thermal control with a dense, rigid structure. Engineered to resist fire up to 2150°F without toxic smoke, this durable insulation maintains shape and performance over time. Its water-repellent, vapor-permeable composition safeguards against moisture damage, making it ideal for high-demand residential and commercial applications where safety, comfort, and energy efficiency are paramount.

## Description

Achieve professional-grade performance with Rockwool 8 lb Density Stone Wool Insulation. Engineered for applications where superior acoustic and thermal control is non-negotiable, this high-density insulation provides the ultimate solution for creating a safer, quieter, and more energy-efficient environment. Unmatched Sound and Thermal Control The exceptional mass and density of our 8 lb stone wool make it the premier choice for soundproofing. Its rigid structure excels at absorbing sound waves and blocking noise transmission between rooms, making it ideal for home theaters, studios, offices, and any space where quiet is essential. This density also translates to enhanced thermal performance, helping to drastically reduce your heating and cooling costs while maintaining a comfortable indoor climate year-round. The Ultimate in Fire Safety and Durability Made from natural stone, Rockwool is non-combustible and can withstand extreme temperatures, giving you invaluable protection and peace of mind. Unlike other insulations, it won't produce harmful smoke or contribute to the spread of flames. The 8 lb density also ensures the insulation is durable, sag-resistant, and will maintain its shape and performance for decades. It is naturally resistant to moisture, ensuring a healthier and more resilient building envelope.

Review: Rockwool Boards - Expensive, but easy to work with. Needed it because area needing work gets exposed to some moisture.
Review: Easy to work with - Using in generator enclosure. Very happy with this stuff

## Features

- 8 lb Density is a better insulator. With more mass packed into the same space, it's more effective at blocking soundwaves (higher STC rating) and resisting heat transfer (higher R-value) than products such as Rockboard 60 which has a density of 6 lb. SL960, 8 lb Density is stiffer, more rigid, and more durable. It holds its shape better, resists compression, and can handle more vibration and abuse.
- MAXIMUM FIRE RESISTANCE: Protect your property and peace of mind with non-combustible stone wool insulation. Capable of withstanding temperatures up to 2150°F (1177°C), this dense insulation will not produce toxic smoke or contribute to fire spread, providing critical extra time in an emergency.
- PROFESSIONAL-GRADE SOUNDPROOFING: Create a truly quiet space. The 8 lb density provides maximum sound absorption and blocking capabilities. Its dense, non-directional fiber structure is exceptionally effective at eliminating airborne noise like voices and music, making it the top choice for home theaters, recording studios, and commercial spaces.
- ENHANCED THERMAL PERFORMANCE: Lower your energy bills and maintain consistent indoor temperatures. This high-density insulation offers outstanding thermal resistance, reducing heat loss in the winter and heat gain in the summer. Its stable R-value ensures reliable performance for the life of your building.
- RIGID & DURABLE COMPOSITION: Built for demanding applications, the 8 lb density provides superior rigidity and compressive strength. It will not sag or slump in wall cavities over time, ensuring a continuous thermal and acoustic barrier. Its durability makes it easy to cut and install snugly.
- WATER REPELLENT & VAPOR PERMEABLE: Safeguard your structure from moisture and rot. Rockwool is inherently water repellent and vapor permeable, allowing any moisture that enters the wall cavity to dry out. It is also inorganic, meaning it will not rot.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08Z2TW5FS |
| Best Sellers Rank | #350,183 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #383 in Pipe Insulation |
| Color | Yellow |
| Coverage | 56 square feet |
| Customer Reviews | 4.6 4.6 out of 5 stars (31) |
| Date First Available | September 29, 2019 |
| Included Components | Box |
| Item Package Quantity | 1 |
| Item Weight | 53 pounds |
| Item model number | SL960 |
| Manufacturer | Rockwool |
| Product Dimensions | 24 x 48 x 0.1 inches |
| Size | 2" (7 boards) |
| UPC | 685757189033 |

## Product Details

- **Brand:** BRB Products
- **Item Thickness:** 2 Inches
- **Material:** Stone wool
- **Product Dimensions:** 24"L x 48"W

## Images

![Rockwool, Roxul, Mineral Wool 8 lb Density Soundproofing Fire Resistant Insulation Batts, 2" Thick 2' x 4', (7-Pack) - Image 1](https://m.media-amazon.com/images/I/51q1ZLokufL.jpg)
![Rockwool, Roxul, Mineral Wool 8 lb Density Soundproofing Fire Resistant Insulation Batts, 2" Thick 2' x 4', (7-Pack) - Image 2](https://m.media-amazon.com/images/I/61FZedHIaOL.jpg)
![Rockwool, Roxul, Mineral Wool 8 lb Density Soundproofing Fire Resistant Insulation Batts, 2" Thick 2' x 4', (7-Pack) - Image 3](https://m.media-amazon.com/images/I/711zdroWrAL.jpg)
![Rockwool, Roxul, Mineral Wool 8 lb Density Soundproofing Fire Resistant Insulation Batts, 2" Thick 2' x 4', (7-Pack) - Image 4](https://m.media-amazon.com/images/I/61WXRsRjuyL.jpg)
![Rockwool, Roxul, Mineral Wool 8 lb Density Soundproofing Fire Resistant Insulation Batts, 2" Thick 2' x 4', (7-Pack) - Image 5](https://m.media-amazon.com/images/I/61-e0m7fwWL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: Which one is best for inside a small generator box for sound deadening?**
A: Rockwool

**Q: Does it have an air and Vapor barrier?**
A: Yes, we sell a version that is.  Please see  ASIN B07YSVM9QS with FSK foil

**Q: Can the 1” be curved for van roof and side insulation?**
A: Yes it is bendable but will break when curved too much. I think it could work for your project. It also sheds a little and you can tear bits off to customize sizing. Consider wearing a mask if working in a small shop.

**Q: Which one is best for deadening bass sounds--like from outside road/car stereo noise?**
A: We used it in hanging wall panels to soften noise in church basement. It has helped a lot. Not sure if that is helpful for your problem.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Rockwool Boards
*by R***T on July 1, 2025*

Expensive, but easy to work with. Needed it because area needing work gets exposed to some moisture.

### ⭐⭐⭐⭐⭐ Easy to work with
*by R***K on December 23, 2024*

Using in generator enclosure. Very happy with this stuff

### ⭐⭐⭐⭐⭐ Great
*by M***B on December 10, 2024*

Order extra.

## Frequently Bought Together

- Roxul, Rockwool Mineral Wool Board, ProRox SL960 (8# Density), Click for Size Options (Yellow, 1")
- SunplusTrade 2" x 50' Black Exhaust Heat Wrap Roll for Motorcycle Fiberglass Heat Shield Tape with Stainless Ties

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-06*