External Sealant Services
External sealants for façades, frames and movement joints with clean application and durable performance.
UK wide coverage
Nationwide response for commercial and residential work.
Fast response
Send us a few photos and we will reply quickly with honest advice and a price.
Live site ready
Built for construction, hotel, retail and occupied spaces.
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What we work on
We provide specialist external sealant and joint sealing services for commercial buildings, new-build developments and refurbishment projects across the UK. Our teams work at height and in all weather conditions, delivering clean, durable and weathertight finishes that perform long-term.
Service overview
Façade and curtain wall joint sealing — movement joints and structural glazing on commercial and residential buildings
Why repair over replace
Window and door frame sealing — weathertight application in UPVC, aluminium and timber frame constructions
Fast quote pathway
Expansion joint and floor-to-wall sealing — internal and external applications with fire-rated options available
Typical problems we solve
Failed external sealant is one of the leading causes of water ingress in commercial buildings. Proactive maintenance prevents costly remedial work and structural damage.
Typical scope
Cracked or failed movement joints on façades — we remove, prepare and reline with compatible weatherproof sealant to restore the weathertight barrier.
Project drivers
Water ingress around windows and door frames — we identify the failure point and reseal properly to prevent internal water damage.
Common buyer question
Degraded expansion joints on concrete and masonry — we clean, back-fill and apply new sealant to restore full weathertightness.
Sectors and environments
We operate across the UK on commercial, residential and mixed-use schemes — from single-building maintenance to large multi-phase developments requiring structured external sealant programmes.
Construction
New-build developers — final weather seal on new construction, ready for practical completion and handover
Commercial
Building owners and managing agents — planned maintenance and reactive replacement of failed external sealant
Residential
Refurbishment and cladding contractors — specialist sealant support on façade replacement and external upgrade programmes
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Can you quote from photos?
We work with silicone, polysulphide, polyurethane, MS polymer and fire-rated sealants, selecting the right product for the substrate and movement requirements.
Do you work nationwide?
External sealant typically performs for 10–25 years depending on the product and conditions. We advise the appropriate specification to maximise longevity.
Is repair better than replacement?
Yes — our teams are trained and equipped to work at height, including from scaffold, MEWP and rope access platforms where required.
Can you work on live sites?
Yes — we carry full RAMS for all external sealant activities including working at height, and are experienced on managed construction sites.
OUR RESULTS
Before & After
BEFORE
AFTER
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Don’t replace it. Repair it properly.
Most damage doesn’t need replacing — it just needs the right repair.
We help contractors, facilities teams and property owners restore surfaces quickly and professionally, with minimal disruption and maximum finish quality.
Send us photos today and we’ll come straight back with a clear answer and next steps.
Frequently Asked Questions
What is a mastic replacement service?
Mastic (silicone sealant) around baths, showers, kitchen worktops and windows can degrade, crack, go mouldy or lose adhesion over time. We remove the old sealant completely and apply a fresh bead of appropriate mastic in your choice of colour.
How often should bathroom mastic be replaced?
Bathroom silicone typically lasts five to ten years before it begins to crack, shrink or develop mould. If you see black spotting, gapping or lifting, it is time for a replacement — a quick job that prevents water ingress and damp.
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