Silane-Siloxane Treatment
A penetrating water repellent that lines the pores of masonry and concrete without filling them, leaving the surface visually unchanged.
On an actual building
It sheds liquid water while letting vapour escape, which makes it the standard treatment for exposed brick, stone and fair-faced concrete where a visible coating is unacceptable.
What we most often have to correct
That it seals cracks. It lines pores. Cracks and open joints must be repaired first, because a repellent bridges nothing.
Terms that come up alongside this one
- Breathability (Vapour Permeability)
The ability of a material to let water vapour pass through it while still resisting liquid water..
- Capillary Action
The movement of liquid through narrow spaces against gravity, driven by surface tension.
- Lime Mortar
A traditional mortar using lime rather than cement as the binder, setting slowly by carbonation and remaining softer and more vapour-permeable than cement mortar..
Silane-Siloxane Treatment — questions we get asked
What does silane-siloxane treatment mean in waterproofing?
A penetrating water repellent that lines the pores of masonry and concrete without filling them, leaving the surface visually unchanged.
Why does silane-siloxane treatment matter on a real project?
It sheds liquid water while letting vapour escape, which makes it the standard treatment for exposed brick, stone and fair-faced concrete where a visible coating is unacceptable.
What do people commonly get wrong about silane-siloxane treatment?
That it seals cracks. It lines pores. Cracks and open joints must be repaired first, because a repellent bridges nothing.
Have a building showing this?
If a term on this page describes something you are looking at, a site inspection will tell you how far it has gone and what it needs. It costs nothing.
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