---
product_id: 94075580
title: "100mm Rockwool RWA45 (Formerly Known as ProRox SL920) Acoustic Slab (14 x 2.88m2 Packs)"
brand: "buildershop uk"
price: "€ 1244.53"
currency: EUR
in_stock: true
category: "Buildershop Uk"
url: https://www.desertcart.hr/products/94075580-100mm-rockwool-rwa45-formerly-known-as-prorox-sl920-acoustic-slab
store_origin: HR
region: Croatia
---

# Superior noise reduction for quiet spaces Fire-resistant resin bonded slab 45KG/m³ density - solid sound barrier 100mm Rockwool RWA45 (Formerly Known as ProRox SL920) Acoustic Slab (14 x 2.88m2 Packs)

**Brand:** buildershop uk
**Price:** € 1244.53
**Availability:** ✅ In Stock

## Summary

> 🔇 Silence is the new luxury — insulate like a pro!

## Quick Answers

- **What is this?** 100mm Rockwool RWA45 (Formerly Known as ProRox SL920) Acoustic Slab (14 x 2.88m2 Packs) by buildershop uk
- **How much does it cost?** € 1244.53 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/94075580-100mm-rockwool-rwa45-formerly-known-as-prorox-sl920-acoustic-slab)

## Best For

- buildershop uk enthusiasts

## Why This Product

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

## Key Features

- • **Noise Ninja:** Engineered to drastically reduce airborne sound in walls and floors
- • **Flexible Fit:** Easily adapts to partitions and floor cavities for seamless installation
- • **Trusted Quality:** Formerly ProRox SL920, now upgraded for modern construction needs
- • **Rock-Solid Density:** 45KG/m³ ensures premium acoustic and thermal insulation
- • **Fire-Safe Confidence:** Resin bonded for enhanced fire resistance and safety compliance

## Overview

Rockwool RWA45 is a high-density (45KG/m³), flexible resin bonded insulation slab designed for superior thermal, acoustic, and fire protection. Ideal for partition walls and floors, it effectively reduces airborne noise while enhancing fire safety, making it a top choice for modern construction projects demanding quiet, safe, and energy-efficient environments.

## Description

Rockwool RWA45 (formerly known as ProRox SL920) is a flexible high quality resin bonded Rockwool insulation Slab that can be used for thermal, acoustic and fire insulation. Rockwool RWA45 is 45KG/M3 density. Most commonly used when the reduction of noise is required. RWA45 is perfect for partition walls and floors to help stop airbourne sound.

## Features

- Rockwool RWA45 is a flexible high quality resin bonded Rockwool insulation Slab.
- Thermal, acoustic and fire insulation most commonly used when the reduction of noise is required.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00BEF34SU |
| Best Sellers Rank | 828,937 in DIY & Tools ( See Top 100 in DIY & Tools ) 119 in Insulation Wool |
| Brand | Buildershop UK |
| Item Dimensions L x W | 14L x 2.88W metres |
| Manufacturer | Buildershop UK |
| Recommended Uses For Product | thermal, acoustic, and fire insulation in construction |

## Product Details

- **Brand:** Buildershop UK
- **Manufacturer:** Buildershop UK
- **Product dimensions:** 14L x 2.88W metres
- **Recommended uses for product:** thermal, acoustic, and fire insulation in construction

## Images

![100mm Rockwool RWA45 (Formerly Known as ProRox SL920) Acoustic Slab (14 x 2.88m2 Packs) - Image 1](https://m.media-amazon.com/images/I/31IApuQ9lmL.jpg)

## Frequently Bought Together

- Buildershop UK 100mm Rockwool RWA45 (Formerly Known as ProRox SL920) Acoustic Slab (14 x 2.88m2 Packs)
- Unibond No More Nails Original Cartridge 365g
- ProDec Extra Strong Caulking Gun

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**Shop now:** [https://www.desertcart.hr/products/94075580-100mm-rockwool-rwa45-formerly-known-as-prorox-sl920-acoustic-slab](https://www.desertcart.hr/products/94075580-100mm-rockwool-rwa45-formerly-known-as-prorox-sl920-acoustic-slab)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-08-20*