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Repair over replacement

Mastic & Sealant Services UK

Professional internal and external mastic and sealant application – fire-rated, expansion joints, bathrooms, kitchens, curtain walling and commercial projects.

Send Photos for a Fast QuoteCall 01268 975269
UK-wide coverageFast photo quotesLive-site ready

UK-wide coverage

Nationwide service for commercial and residential clients.

Fast photo quotes

Send photos and get honest advice and a price quickly.

Live-site ready

Built for occupied homes, hotels, retail and construction.

Colour-matched finishes

Invisible, durable repairs that blend seamlessly.

What We Repair

Specialist in-situ repair and refinishing across mastic and sealant joints. Pick a service or send photos for advice.

Internal Mastic Application

Neat internal mastic and silicone application and replacement around worktops, splashbacks and sinks for a clean, watertight seal.

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External Mastic Application

Weatherproof external mastic and sealant application to joints, cladding and facades.

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Fire Rated Mastic

Professional fire-rated sealant application for compliant commercial and construction environments.

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Expansion Joint Sealing

Sealing and resealing of expansion and movement joints in floors, walls and facades.

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Bathroom Sealing

Replacement of failed, mouldy or discoloured silicone and mastic around baths, showers and basins for a hygienic seal.

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Curtain Wall Sealing

Specialist sealing and weatherproofing of curtain walling and facade joints on commercial buildings.

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Commercial Sealants

Large-scale internal and external mastic and sealant works for commercial and construction projects.

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Common Damage We Fix

Chips
Scratches
Cracks
Burns
Dents
Scuffs
Failed coating
Water damage
Worn finish
Colour mismatch

Materials & Surfaces We Cover

SiliconePolyurethaneFire-rated sealantHybrid sealant

Our Process

1

Send photos

Share a few photos of the damage and we assess what is possible.

2

Quote & schedule

We confirm an honest price and a convenient time to attend.

3

On-site repair

Our technicians repair and refinish in situ, cleanly and quickly.

4

Invisible finish

We colour-match and blend so the repair disappears.

Sectors We Support

Related Services

Areas We Cover

Frequently Asked Questions

Can you repair mastic and sealant joints on site?

Yes. Almost all of our work is carried out in situ, with no need to remove or replace the surface.

How much does it cost?

A repair typically costs a fraction of replacement. Send us a few photos and we will give you an honest, no-obligation price.

Will the repair be noticeable?

No. We colour-match and blend the finish so repairs are invisible in normal use.

Do you work nationwide?

Yes. We cover the whole of the UK for commercial, construction and residential clients.

Don’t replace it — repair it properly.

Send a few photos and we’ll come straight back with honest advice and a fast quote.

Don’t replace it — repair it properly.UK-wide hard surface repair specialists. Send a few photos and we’ll come straight back with honest advice and a price.
Constructionline Gold accreditedUK-wide coverageFully insuredRepair over replacementLive-site ready