
SiF - KMSi Seal C - Concentrate
KMSi Seal C - Concentrate
5L = 20L RTU
20L = 80 L RTU
- KMSi Seal is a water based siliconate sealer, used for sealing all types of porous limestone and concrete building materials.
- Suitable for limestone and concrete retaining walls and plain grey concrete.
Not recommended for decorative concrete and other coloured materials.
Si Sealers - Siliconates, Silanes & Siloxanes
Si Chemistry: Si-based water repellent sealers are usually applied in the form of siliconates, silanes and/or siloxanes. They are typically very small to medium sized molecules that when applied onto a substrate, penetrate deep below the surface. They chemically react with the substrate to form a cross-linked Si backbone polymer which repels water whilst still allowing vapour transmission.
Key advantages
- Superior water repellence, providing excellent water-based stain resistance;
- Reduces water ingress and minimizes efflorescence in mineral substrates;
- Transparent, natural finish - does not significantly change appearance;
- High penetration into masonry surfaces;
- High wear resistance, UV stable, long life;
- Fungal and algal resistance;
- Easy to clean surfaces;
- Substrates remain breathable;
- Can be applied to damp or wet substrates.
If your order is placed before 2:00pm, we will try to post same day.
We use a range of couriers to provide you with the best possible freight pricing.
If your order does not ship immediately, we are likely waiting on a courier update. Please refer to your account for updates or contact us to find out more.
We are happy to work with you if you need a return. Please contact us to discuss.

