Service 05
Mastic & Sealant
Renewal of perimeter and movement joints on facades and around openings, to address water ingress at the building envelope.
Overview
Mastic & Sealant, delivered at height.
Sealant is the part of a facade that fails first and is noticed last. Joints around windows, panel interfaces and movement joints all have a service life shorter than the building around them.
Renewing them is straightforward work made difficult only by height. Rope access can reach a single failing joint on the eighth floor, so an isolated repair need not become a scaffold job.
What we deliver
Typical scope of works.
- Renewal of perimeter joints around windows and doors
- Movement joint sealant replacement
- Panel and cladding interface joints
- Removal of failed or perished sealant
- Sealing around penetrations and fixings
- Localised repairs following an ingress investigation
Access and delivery
How the work gets done.
- Existing sealant is cut out rather than sealed over, so the new joint bonds to a sound substrate.
- Joints are inspected at close range first — sealant is often blamed for ingress that has another cause.
- Works are carried out from rope, so an individual joint can often be reached without scaffolding the whole elevation.
Suitable for
Where this service fits.
- Curtain-walled and panelled commercial buildings
- Managed blocks with recurring ingress at window perimeters
- Buildings with high-level movement joints
Need safeaccess at height?
Tell us about the building, works required and access challenges.
Photos can be attached to your enquiry.