Facades & Expansion Joints
Facades move - expansion joints take up that movement: between components, at parapets and across large rendered areas, elastic joints absorb it. Add a water repellent and the facade stays water-shedding, clean and frost-proof.
How to do it
- Check the joint dimensions: width to depth at 2:1, and prevent three-sided adhesion with a backer rod.
- Prime the flanks (primer to suit the substrate).
- Apply the facade sealant and smooth it - overpaintable systems in acrylic, exposed joints in silicone or hybrid.
- Protect absorbent facade surfaces with a siloxane water repellent.
Matching products
acrylic sealants, hybrid and MS polymer sealants and primers and bonding agents.
Frequently asked
Why does the facade joint keep cracking?
Usually because of three-sided adhesion or the wrong joint geometry - the backer rod is essential so that the sealant adheres to two flanks only.
What does a water repellent achieve?
It makes mineral surfaces water-shedding without blocking diffusion - fewer algae, less frost damage and a facade that stays clean longer.
Guides on Facades & Expansion Joints
All 69 guides
3 products
2 variants
Content: 0,8 Litre (€21.19 / 1 Litre)
