Water repellency, building protection and construction-chemical specialities for concrete, façades and mineral substrates.
Mineral substrates absorb water — and with the water come salts, frost damage, efflorescence and algae. A water repellent reduces capillary water uptake without forming a closed film: the component stays permeable to water vapour and can continue to dry out. That is precisely what distinguishes it from a coating — and why it is the means of choice wherever a structure needs protecting without being sealed in.
Alongside the water-repellent treatments, the range covers further construction-chemical specialities for mineral systems and surface protection. Durability is decided by what happens inside the substrate: penetration depth, alkali resistance on young concrete and the weather during application. Fluorine-free technologies are available. One point of scope: from Rudolf we look after construction chemicals only — textile chemistry and paint additives are not part of our range.
| Product form | Substrate / use | Watch out for |
|---|---|---|
| Silane/siloxane, waterborne (cream, emulsion) | Concrete and fair-faced concrete, façades | Penetration depth and alkali resistance are decisive |
| Silane/siloxane, solventborne | Dense substrates, natural stone | Deeper penetration; observe VOC and work safety |
| Additives for mortars and renders | Integral water repellency at the plant | Dose on the binder, check strength development |
| Surface protection specialities | Façades, building preservation | Always judge on a trial area |
Guide values for initial orientation — our assessment as a distributor. The manufacturer's technical data sheet and trials in your own system are decisive.
Extract from our product database. Click a name — Coaty will explain the product to you.
Technical data sheets and free samples come directly from us — no detour via the manufacturer. Prices on request.
