The Mastic Doctor team standing beside their branded vans outside an office building
Perth and Kinross · Scotland

Fire stopping in St David's

Fire stopping in St David's, backed by over 20 years in commercial sealing. Fully insured, with a 12-month guarantee.

  • Fire sealant pulled out of the opening
  • Fire stopping installed outside its tested range
  • Openings left by services added after handover
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
12-month guarantee on our workmanship.
London, the South East & Scotland
Constructionline member
Fully insured: £5m PL

Fire stopping for St David's sites

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

Fire stopping for commercial buildings in St David's

For main contractors, our fire stopping package slots in after the M&E trades have finished in an area. We work from your penetration schedule or marked-up drawings. Tell us what records you need and we will confirm with the quote. If you’re dealing with builders’ foam or ordinary silicone in compartment walls and fire-stopping items raised at inspection or handover, we can help, on service gaps in risers, small duct penetrations where the tested detail allows and joints between fire-resisting walls and floors alike. A specialist sealant contractor works differently from a general builder: on jobs in St David's, preparation and product choice get the time they need.

Travel to smaller places like St David's is planned so every penetration is sealed on one trip. Send the specification and photos of the openings, with sizes if you have them.

What our 12-month guarantee covers is the way we did the job: preparation, application and finish. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.

Where
St David's (PH7)
Region
Perth and Kinross
Guarantee
12 months on every job
Quotes
A fixed quote before we start
Telephone
01277 525 020
Last updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Penetration seals near St David's

Under the Scottish non-domestic Technical Handbook, clause 2.1.14, penetrations should be fire stopped to at least the wall or floor’s fire resistance duration, and products should be tested for their end use. Our part is installing the specified fire-rated sealant to its tested detail.

Buildings near St David's get the fire-rated product that’s specified, installed to its tested detail.

St David's is about 10 miles west of Perth, in Perth and Kinross. If you are looking for fire stopping in St David's, we can help, as we do across Perth and Kinross. Across Perth and Kinross, 114 places are covered, St David's among them. Our Dundee page has more on work in that area (29 miles or so).

Work on service penetrations is covered throughout PH7. Just outside St David's, we also work in Madderty (1 mile north-east), Balgowan (3 miles north-east), Aberuthven (4 miles south-east), Gilmerton (4 miles north-west) and Tullibardine (4 miles south). Nearby towns on our patch include Perth (10 miles east), Crieff (5 miles west), Kinross (15 miles south-east), Letham (9 miles east), Scone (12 miles east) and Tulloch (10 miles east).

What’s near St David's

A little further out are Strathallan Castle (3.5 miles south-west) and St Margaret's Hospital (4.9 miles south).

Map of St David's © OpenStreetMap contributors

Common questions from St David's clients

Is a smaller place like St David's outside your area?

No. Places such as St David's are covered as much as the big towns. Our area covers all of Scotland, cities, towns and islands alike. Where we can, we group nearby jobs to make the most of each trip.

Can you take on a job at a hospital such as St Margaret's Hospital?

Yes. We work in healthcare settings as well as offices and schools. Each area is agreed with the ward or department and the estates team in advance.

Is it fine to apply new sealant on top of old?

No. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.

When is resealing likely to be due?

There isn’t a single answer, since movement, weather, cleaning and use all affect it. Regular inspection is the best way to catch problems early.

Can you work to our specification?

Yes. Send it with your enquiry, and we’ll price the work to it.

Do you design or specify fire stopping?

No. The specification comes from your designer, fire engineer or building control. Our role is fitting the specified fire-rated sealant, following the maker’s tested details.

What about RAMS and site documents?

Each site asks for different documents, so tell us what you need and we’ll confirm it when we quote.

Leave it or put it right?

It is cheaper to seal service penetrations as each services package finishes than to come back for them later. While the area is still open, every opening is easy to see and reach and each detail can be checked as we go. For buildings near St David's, dealing with all the failing joints at once saves return trips. Photos of each area help us quote the whole job.

We don’t publish prices, because the scope varies so much from one building to the next. Call for a quote.

What you get with us

  • Over 20 years of commercial sealing
  • CHAS accredited contractor
  • One phone line for London, the South East and Scotland
  • Fully insured, including public liability cover

See how commercial sealant jobs are priced or our accreditations and insurance.

Building owners, agents and FMs in St David's

Hospitality, education, healthcare, office and retail clients come to us directly as well. We plan around the way the building is used, so guests, pupils, patients or staff are disturbed as little as possible.

Housing associations and managing agents often need work done across blocks and communal areas. We phase the work so people keep access, and each stage is agreed with your contact.

Different surfaces, different methods

Masonry and concrete

Core-drilled holes are neat; broken-out ones rarely are. The gap is measured at the widest point against the detail’s limits.

Plastic pipes

In a fire, plastic pipework melts away and leaves an opening. Small sizes are sometimes covered by an intumescent sealant detail. We confirm material and size first and tell you if sealant isn’t the right product.

Our process

In a busy building, the work is phased so only one area is out of use at a time. Each area is protected, prepared and sealed, then reopened once the sealant allows before we move to the next. For a building near St David's, directions, keys and a contact on the day are worth sorting early. We will confirm the plan with the fixed quote.

  1. First we go through the drawings, schedule or specification for the seals and ask about anything unclear.
  2. On site, each opening is checked against the tested detail it is meant to follow.
  3. Unsuitable fillers and loose debris are taken out of each opening.
  4. Mineral wool or other backing goes in wherever the detail asks.
  5. Fire-rated or intumescent sealant is gunned in to the specified depth, then tooled.
  6. If an opening needs something other than sealant, we tell you instead of improvising.

What we need from you

  • Arrange parking or a loading space
  • Tell us your opening times and when work is allowed
  • Move anything stored against the joints

Quotes

Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we will return a fixed quote you can plan around. For a chat about it beforehand, call 01277 525 020 or email us.

Ask for a quote

Advice

Honest limits

Sealant solves a lot, but not everything, and we’d rather tell you before you spend money. It won’t fix:

  • Fire doors, dampers or other fire safety equipment
  • Construction that lacks the fire resistance the seal relies on
  • Designing or specifying fire stopping, which sits with the designer or fire engineer

If in doubt, phone 01277 525 020 or use the quote form and we will say what we think before you book.

What we seal

  • Service gaps in risers
  • Small duct penetrations where the tested detail allows
  • Pipe penetrations
  • Joints between fire-resisting walls and floors
  • Linear gaps at wall heads
  • Cable penetrations

When to call us in St David's

Head-of-wall joints and wall-to-wall junctions are frequent weak points. Movement in the frame or slab can open the joint. The tested detail for a linear joint states the width and movement it covers.

Site and facilities staff are often the first to spot these:

  • Old intumescent sealant that has split away
  • Non-fire-rated filler around services
  • Unsealed penetrations discovered above suspended ceilings
  • Unsealed openings around new pipes and cables

On a hospital site such as St Margaret's Hospital, 4.9 miles south of St David's, fire-rated sealant goes in where the specification calls for it, with the work planned around the estates team’s permits.

Comparing quotes

  • Are they CHAS accredited or on Constructionline?
  • How they’ll work around occupants
  • How the joint faces will be prepared and primed
  • The named product and why it was chosen

Our contractor checklist

Accreditations

Trusted. Accredited. Insured.