High-level sealant renewal and expansion-joint repair by IRATA-certified rope access. We replace failed facade mastic and movement joints on London buildings at any height — stopping water ingress and the cracking that follows when seals fail.
Facade sealant and expansion joints don't last forever. As mastic hardens, shrinks or splits, open joints let water into the building envelope and allow structural movement to crack adjacent materials. Reaching every joint across a tall facade is exactly what rope access is suited to.
We cut out and remove failed sealant, prepare the joint, and reseal with a product suited to the substrate, joint width and expected movement — restoring a weathertight, flexible seal.
Sealant renewal often ties in with waterproofing and facade work, so recurring leaks can be addressed at source in a single mobilisation.
Who it's for
We inspect the facade on rope to identify failed, open or perished joints and confirm the right sealant system for each.
Old sealant is removed, joints are cleaned and primed, and backing is set so the new seal performs as intended.
Fresh sealant is applied and tooled for a clean, flexible, weathertight finish, and we confirm coverage across the facade.
Sealant works are carried out on rope by IRATA-certified technicians, with anchors and rigging planned and checked beforehand, and materials managed so nothing falls below.
On occupied frontages we plan timing, exclusion zones and pedestrian management so joints can be renewed while the building stays in use.
Signs include visible cracking or gaps in joints, hardened or crumbling mastic, staining below joints and water ingress near panel edges. We can confirm with a close inspection on rope.
Sealant works renew the flexible joints between panels and around openings; waterproofing treats surfaces and coatings. They often work together, and we'll advise the right mix at survey.
With correct preparation and the right product for the joint and movement, modern sealants commonly last many years. Life depends on exposure, substrate and movement, which we assess first.
Yes — rope access lets us reach every joint across the full height of the facade without scaffolding.