Rockwool Ablative Liquid, 5ltr


Fire stopping solution for concrete floors, masonry and dry wall systems, following the creation of voids for the passage of services

Provides fire resistance up to 2 hours (50mm) and up to 4 hours (60mm).

Tested for air tightness, providing an additional smoke and acoustic seal.

Non-combustible – Euroclass A1.

Lightweight and simple to install. Easy to to repair if damaged. Requires little to no maintenance upkeep.

Made from diabase rock, which is a renewable and plentiful natural resource.

Does not contain gases that have ozone depletion potential (ODP) or global warming potential (GWP).

Thicknesses and Availability:

This Rockwool Range includes the following readily available product thickness: 50mm and 60mm.

Additional information


1 to 5 working days

SKU: RWLACCAL50 Category:
Product ex-VAT inc-VAT  
Rockwool Ablative Liquid, 5ltr £47.27 £56.72

Availability Indicators

Rockwool Ablative Coated Batt is sent out from depots nationwide and is subject to the Local Depot Delivery minimum order levels and delivery charge thresholds.

Reasonable stock levels of popular thicknesses are held at larger depots. Please allow extended lead times where products need ot be sourced from the manufacturer before being delivered to site.

Rockwool reserves the right to change stocked products - while we will do all we can to keep on top of changes, availability and lead times my vary.

  • Generally 1 to 3 working days for delivery
  • Generally 1 to 5 working days for delivery
  • Generally 5 to 10 working days for delivery
  • Special request or made to order item, allow extended lead times. Minimum order levels may apply.
  • Please call to check availability and approximate lead times

Delivery charges will be calculated at check-out. Please visit our Ordering From Us page for further details on minimum order levels and delivery charges. If you have any queries, please do not hesitate to contact me via our Contact Form or on 01903 899 898.

Product Application

Fire stopping to service and void penetrations

Rockwools fire protection batt, Ablative Coated Batt, is specifically designed to provide fire stopping solutions to service and void penetrations in floors and walls.

Product Make-up

Core: Durable non-combustable stone wool spun from volcanic rock, compressed and resin bonded into slabs.

Facings: Faced on both sides with a high performance ablative coating.

Product Performance

Fire Performance Classification A1 BS EN 13501-1
Surface Spread of Flame Non-combustable  
Nominal Density 160 kg/m³  

Fire Performance

A single 50mm Ablative Coated Batt can provide up to 2 hours fire resistance integrity and insulation, ratings are dependent upon the service penetrations and void size. Where 4 hours integrity and insulation are required it is recommended to use 60mm Ablative Coated Batt.

Acoustic Performance

Tested for head of wall:

  • Rw= up to 48db (2 x Coated batts)
  • Rw= up to 37db (1 x Coated batts)

The correct use of Coated batt within concealed cavities and voids will reduce the level of transmitted sound:

  • Rw= up to 52 db (2 x Coated batts) - incorporating 48mm O/D PVC /15mm copper pipe penetrations.
  • Rw= up to 34 db (1x Coated batts) - incorporating 48mm O/D PVC /15mm copper pipe penetrations.

For specific acoustic requirements please contact ROCKWOOL Technical Solutions.