External sealant & silicone renewal
Weatherproof renewal for windows, doors, render, cladding and building envelope joints.
External joints must flex with the building and resist UV and rain. Across Cardiff and South Wales, we renew failed external silicone and seal windows, doors, render, cladding and panel joints with appropriate weatherproof products. Where required, old material is removed and the joint is prepared before replacement, including expansion joints on commercial and residential envelopes.
What we include
- Failed external silicone removal and renewal
- Window and door perimeter seals
- Render, cladding and panel joints
- Expansion and movement joints
- Commercial envelope programmes
For programme-led external packages and site tenders, see our commercial sealant contractors across South Wales.