Repair over replacement
Fire Rated Mastic Services
Certified Fire Stopping & Fire Rated Sealant Application Across the UK
Fire-rated mastic isn’t just about finish — it’s about compliance, safety and getting sign-off.
At Shazam Repairs, we provide professional application of fire-rated sealants to maintain fire integrity across joints, penetrations and compartment lines.
Clean, compliant and done properly.
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.
What Is Fire Rated Mastic?
Fire-rated mastic (fire stopping sealant) is used to:
- Prevent the spread of fire and smoke
- Maintain fire compartmentation
- Seal joints and service penetrations
It’s a critical part of ensuring buildings meet fire safety regulations and handover requirements.
Where We Apply Fire Rated Sealants
We carry out fire-rated mastic works across:
- Service penetrations (pipes, cables, ductwork)
- Wall and floor junctions
- Door frames and window perimeters
- Expansion joints
- Risers and plant rooms
- Compartment walls and ceilings
Suitable for both new build and remedial works.
What we do
Fire Stopping for Construction & Fit-Out
We regularly support:
Main contractors
Fit-out companies
M&E contractors
Facilities and maintenance teams
Common issues
Our Approach
We keep it straightforward and to the point:
1. Assess
We review the required fire rating and substrate conditions.
2. Prepare
Surfaces are cleaned and prepped to ensure correct adhesion.
3. Apply
Fire-rated sealants are applied to specification, ensuring correct depth and coverage.
4. Finish
Clean, consistent finish — no mess, no shortcuts.
End result — a clean, consistent finish that looks right.
Compliance
Compliance & Standards
We work in line with:
Manufacturer specifications
Fire rating requirements (e.g. 30, 60, 90, 120 minutes)
Site-specific fire stopping details
FAQ
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Each main page should end with FAQs that answer real buyer questions.
Can you quote from photos?
Yes. Just send us a few photos of the area — bath edge, shower tray, basin join — and we’ll come back to you with a clear price, usually within the same day.
Do you work nationwide?
Yes. We cover the whole of the UK, handling both one-off residential jobs and ongoing commercial contracts. Travel costs may apply for remote locations — ask when you enquire.
Is repair better than replacement?
In almost every case, yes. Replacing a bath, shower tray or tiles to fix a sealant problem is unnecessary and costly. Fresh mastic restores the joint properly at a fraction of the cost.
Can you work on live sites?
Yes. We regularly work in occupied hotels, care homes, gyms and offices. We use low-odour materials, keep mess to a minimum and let the seal cure quickly so the space can be used again fast.
OUR RESULTS
Before & After
Fast response · UK wide coverage · Trusted by commercial clients
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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