The Mastic Doctor team standing beside their branded vans outside an office building
Surrey · England

Fire-rated sealing and fire stopping in Capel, Surrey

Looking for fire stopping in Capel? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.

  • Old intumescent sealant that has split away
  • Snag lists that include open service penetrations
  • Fire stopping installed outside its tested range
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
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Our workmanship is guaranteed for 12 months.
Covering the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Fire stopping for businesses in Capel

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

Fire stopping in Capel

We are commercial sealant applicators, CHAS accredited and a Constructionline member, with CSCS-carded applicators on site. We hold no third-party fire-stopping installer certificate, and we won’t pretend otherwise. What we offer is careful installation of the specified sealant to its tested detail, with a 12-month guarantee on our workmanship. Site teams most often ask us about expanding foam used as fire stopping and improvised or mixed-product fire seals, on small duct penetrations where the tested detail allows, joints between fire-resisting walls and floors and pipe penetrations. Whoever orders the work in Capel, the brief is usually the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

Rural conversions around Capel can put new fire-resisting partitions inside older structures. A penetration seal only performs as tested if product, substrate, service, gap and depth all match the detail.

Work we carry out comes with a 12-month guarantee. If an installation problem shows up, give us a call on 01277 525 020 or email a schedule or drawings and we will arrange a return visit.

Place
Capel (RH5)
Wider area
Surrey
Guarantee
A 12-month guarantee
Price
Fixed quote, scope in writing
Phone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

Service penetrations in Capel buildings

At about 26 miles from central London, Capel is within reach of the capital. Office refits around the commuter belt bring new cabling through fire-resisting walls; the gaps need the specified seal. In England, Approved Document B covers fire stopping of openings and penetrations. References to the older BS 476 classes are being removed from it from 2 September 2029, after which the European classification, BS EN 13501-2, is the route, subject to transitional arrangements. Our part stays the same: the specified product, installed to its tested detail.

Wherever services are added at a hospital such as Horsham Hospital (5.6 miles south of Capel) the compartment line has to be made good with the specified product. For a school such as Scott Broadwood CofE Infant School, penetration sealing fits best at the end of the summer works.

Capel is about 5 miles south of Dorking, in Surrey. We cover Capel and the rest of Surrey, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Capel is one of 379 places in Surrey on our list for service penetrations. We also cover Brighton, around 24 miles from Capel.

Business premises anywhere in RH5 are within our area for service penetrations. Streets here include The Street, Laundry Way and Bakers Way. Sites close to Capel are covered too, including Ockley (2 miles west), Beare Green (2 miles north), Paynes Green (2 miles south-west), Kingsfold (2 miles south) and Holmwood Corner (3 miles north). Further afield, our area takes in Guildford (13 miles north-west), Epsom (13 miles north), Horley (7 miles east), Redhill (9 miles north-east), Ewell (14 miles north) and Reigate (8 miles north-east).

What’s near Capel

For rail, the closest station is Ockley station, about 0.6 miles west of the centre. Other landmarks nearby include Horsham Hospital (5.6 miles south). The countryside around Capel includes Leith Hill and Warnham LNR.

Map of Capel © OpenStreetMap contributors

Questions we are asked in Capel

What happens to BS 476 references for fire stopping in Capel?

References to BS 476 classes are being removed from Approved Document B from 2 September 2029, after which BS EN 13501-2 classification is the route, subject to transitional arrangements. Our part doesn’t change: the specified product, to its tested detail.

Can you work on a hospital site such as Horsham 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 your workmanship covered by a guarantee?

Yes. Workmanship is guaranteed for 12 months.

Is Capel in your area?

Yes. Capel falls within our area, and you can speak to us on 01277 525 020 or send photos by email to get started.

How soon can the area be used again?

We will confirm how long the chosen product needs to cure, and sign any area that should be left alone.

How long does a job like this take?

The duration is planned around your programme and the access we are given. We will give you an estimate of time on site when we quote.

How long do sealant joints last?

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.

When to call us in Capel

Linear gaps fail where a fire-resisting wall meets a slab, soffit or another wall. Deflection and building movement can open these gaps. Linear joint details set a width range and movement capability, and the seal has to sit within them.

Any of the following is a good reason to get the joints checked over:

  • Fire-stopping items raised at inspection or handover
  • Fire stopping installed outside its tested range
  • Expanding foam used as fire stopping
  • Service penetrations left open after M&E works

Older community buildings such as Church of St John the Baptist that have been rewired or given new heating can have service gaps through walls worth checking against the specification.

What your quote should include

  • Which product they’ll use, and why it suits the joint
  • Can the work be phased to keep areas open?
  • What level of public liability insurance do they hold?
  • How joint depth will be controlled

How to choose a sealant contractor

What happens if it’s left?

A seal that doesn’t match its tested detail gives false comfort. Correcting it means cutting it out and starting again with the specified product, and doing it once, properly, is cheaper. For buildings around smaller places like Capel, water damage can go unnoticed for longer, especially where a building isn’t used daily, which gives a failed joint time to do damage. Renewing joints in good time avoids the problem.

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

Why appoint us

  • Clear, fixed quotes
  • One number for every site we cover
  • Sealing commercial buildings since 2005
  • Our applicators hold CSCS cards

Read how commercial sealant jobs are priced and our accreditations and insurance.

How a job runs

Tell us your site hours and access windows and we’ll plan around them. While we’re working, the area stays contained and tidy, and your contact hears from us before we move to the next area. For a building around Capel, tell us how to find it and who will meet us. Add it to your enquiry and we’ll build it into the plan.

  1. We read the specification, drawings or penetration schedule you send and raise any questions before we price.
  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. We apply the specified sealant to the depth and around the services as the detail shows.
  6. Openings that need a collar, wrap, batt or other product are flagged to you rather than filled with sealant.

Preparing the site

  • Send asbestos survey details if the building is pre-2000
  • Point out parking and an unloading spot
  • Clear stock, furniture or equipment away from the joints

Request a quote

We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To start the process, speak to us on 01277 525 020 or email drawings and photos.

Ask for a quote

Advice

What the job involves on each surface

Plastic pipes

Plastic waste pipes through slabs come up often. The detail decides whether sealant alone is enough.

Linear joints

Head-of-wall gaps, slab edges and wall junctions are linear joints. Their tested detail, under BS EN 1366-4, sets the width, depth, backing and movement allowed and the installation has to fit inside those limits.

Building owners, agents and FMs in Capel

Hotels, schools, healthcare sites, offices and retail units come to us directly as well. We plan around the way the building is used, so the building keeps working while we do.

FMs need a contractor who is easy to get on site. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we will confirm them with the quote.

What we can’t put right

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

  • Gaps in walls that were never built as compartment walls
  • Fire risk assessments, a job for a competent assessor
  • Issuing fire ratings or certificates for seals

If you are not sure, just call the office on 01277 525 020 or use the quote form and we will give you a straight answer.

Surfaces we seal

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

Trusted. Accredited. Insured.