NBS Source
List your products

The ROCKWOOL FIREPRO Softseal system is part of a comprehensive range of firestopping products which ensure that the fire resistance of protected walls, floor and roofs is never compromised by services or voids. The Softseal system has been developed in response to demand from the market for a fire stopping solution where high levels of movement in the buildings services or joints need to be accommodated. The system can be utilized in two key applications: Penetration Seals and Linear Joint Seals.


  • Acoustically absorbent.
  • Suitable for penetration and linear joints.
  • CE marked.
  • Easy to handle and install.
  • Both vertical and horizontal joint applications.
  • Tested for durability to current EU guidelines.
  • Supplied pre-coated.

General information


1200 x 200 x 100 mm

Uniclass 2015

Pr_25_80_81_29 Flexible intumescent gap sealsPrimary


P12/160 Linear gap sealing

Specification data - Flexible intumescent gap seals

Product Reference

ROCKWOOL FIREPRO Softseal Coated Strip

Lamella strip pre-coated with softseal flexible coating to both sides.

ROCKWOOL FIREPRO Softseal Linear Joint Seal

Lamella strip pre-coated with softseal flexible coating to one side.



Softseal acoustic intumescent sealant

Softseal flexible coating

Softseal high expansion intumescent sealant

Standard product features


1200 x 200 x 100 mm.

Acoustics (tested to EN 10140):

  • Rw: 30 dB when installed with 100 mm thick SoftSeal Batt.
  • Dn,e,w: 40 dB when installed with 100 mm thick SoftSeal Batt.

Water permeability (tested to EN 1027):

No leakage observed up to 300 Pa.

Air permeability (tested to EN 1026 up to 600 Pa):

Leakage at 50 Pa 0.1/1.4 m3/m2/h.

Product Options

Standards and approvals:

FIREPRO SoftSeal has been tested and assessed to BS EN 1366-3 and classified to EN 13501-2. It has been CE marked against ETAG 026-2. As part of the testing to BS EN 1366-4, it was assessed for its movement capabilities, prior to conducting the fire test. The product was tested to accommodate movement (expansion and contraction) of +/-15%.