Fassa S650 Undercoat - 25kg

£13.75 excl.VAT
£16.50 incl.VAT
Shipping calculated at checkout.

Fassa S650 Undercoat is a white biological undercoat for restoring interior or exterior damp walls, promote the adhesion of render to the wall, by enhancing the anti-saline action of the latter.


  • Undercoat
  • Use prior to Fassacouche on difficult substrates where it is necessary to improve adhesion & control suction


  • 1 bag of S650 (25kg) will cover approx. 5m2 depending on application & suction
  • Yield approx. 3-5 kg/m2
  • Thickness 4-5 mm

    Please Note: These estimates take no account of wastage and will vary according to the type of surface involved and method of application.


    Fassa S650 Undercoat is supplied in 25kg bags. 

      Technical & Safety Datasheets

      Please follow link to Fassa Bortolo S650 Undercoat Technical datasheet.

      Please follow link to Fassa Bortolo S650 Undercoat Safety datasheet.