NBS Source
Remtox W290 Alkali Resistant Silicone


A water repellent surface treatment of above ground exterior masonry to prevent penetrating damp.

Specially formulated to be alkali resistant for use on new mortars or renders. It is used to stop external penetrating dampness and its main feature is a water barrier but not a vapour barrier. It therefore allows the masonry to breathe and reduces the danger of condensation such as can occur if an impervious treatment is used.

Sovereign Masonry Sterilizing Wash is recommended to help remove any lichen or algal growth from the substrate prior to application of the treatment.

General information


25 litres


Pr_35_31_22_77 Silicate-based masonry coatingsPrimary


M60/170 Masonry coating

M60/18 Special coating

Specification data - Silicate-based masonry coatings

Product Reference

Remtox W290 Alkali Resistant Silicone

Standard product features


Clear, ready to use.


25 litres.


0.5 - 4 m² per litre per coat.