Fibrecoat Porosity Sealer 4kg


The Fibrecoat Porosity Sealer is a single component, general purpose primer to seal completely dry porous concrete and cementitious surfaces prior to Fibrecoat Resin application.



Only for use with Fibrecoat

Please note this product can only be used with the Fibrecoat roofing system and is not compatible with the Fibrelast GRP system

Compatible surfaces

You can use the Fibrecoat Porosity Sealer with the Fibrecoat system on a number of different roofing surfaces.

  • Asbestos
  • Concrete
  • Brickwork
  • Felt
  • Bitumen
  • Asphalt

Application guide

The Fibrecoat porosity sealer should be applied using a brush or short pile roller giving an even coating across the substrate at up to 300 g/m2 depending on the surface. For more information visit our support section or contact a member of staff.

Curing times

General curing times for the Fibrecoat Porosity Sealer, please note these times will vary due to changing operating conditions.

Touch dry

Full cure

Minimum overcoating


The best guarantee is the one you’ll never have to use, but just in case our Basecare protection has you covered.

Fibrecoat is protected by our industry-leading Basecare guarantee that includes a range of benefits from standard product protection, approved contractor installation cover and our unique first 5 year Basecare+ warranty.


Fibrecoat can be covered for up to 25 years depending on application

Additional information
Weight 4 kg

Share your thoughts!

Let us know what you think...

What others are saying

There are no contributions yet.




Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.

Continue as a Guest

Don't have an account? Sign Up

Free Delivery

Spend over £600 and get free standard delivery on your order.

Privacy Preference Center