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

Fire Stopping in Runfold

Commercial sealant work in Runfold for contractors, FMs and building owners: fire-rated and intumescent sealing of service penetrations and linear gaps, quoted at a fixed price.

  • Fire stopping installed outside its tested range
  • Service penetrations left open after M&E works
  • Expanding foam used as fire stopping
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
Constructionline member
£5m public liability

Fire stopping near Runfold

Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.

After the work

To get the most from the new sealant:

  • Arrange inspection before areas are covered up
  • Put resealing into every M&E and fit-out package
  • Ask the designer to confirm details early on refits
  • Look above ceilings when tiles are lifted for other jobs

After every round of M&E works, check that the openings created have been sealed. Building it into each contractor’s sign-off keeps the walls intact.

Regular walk-rounds of service areas are worth the time. Catching a damaged seal early keeps the fix small compared with dozens found at once.

About our fire stopping in Runfold

Sealant is the specified answer for plenty of openings, such as metal pipes, cables and some small ducts where the detail covers them. Larger openings and some plastic pipes call for collars, wraps, batts or boards instead. We use sealant where it is the specified product, and we tell you when a detail calls for something else. If you have hidden openings found during inspections and fire-stopping items raised at inspection or handover, we can help, whatever the surface. Looking for mastic applicators who cover Runfold? Mastic Doctor has worked for contractors, FMs and building owners since 2005.

Rural conversions around Runfold can put new fire-resisting partitions inside older structures. Where a pipe or cable passes through a fire-resisting wall, the seal must match the tested detail: product, substrate, gap and depth.

Our 12-month guarantee is about workmanship, not wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we spell out the cover before we begin.

The Mastic Doctor team standing beside their branded vans outside an office building
Where
Runfold (GU10, GU9)
Wider area
Surrey
Cover
A 12-month guarantee
Quote
Fixed quote, scope in writing
Call
01277 525 020
Last updated
3 November 2026

Compartment walls and floors in Runfold

Runfold has a number of hotels close by, all within 2 miles. Hotels are divided into compartments, and refurbishments that add pipes and cables through bedroom and corridor walls leave gaps to close. For England, the fire stopping of penetrations is dealt with in Approved Document B. From 2 September 2029, BS 476 references are being taken out of Approved Document B, leaving BS EN 13501-2 classification as the route, subject to the Government’s transitional arrangements. We install whatever has been specified, to the product’s tested detail.

Residences at universities like University for the Creative Arts, 2.3 miles to the west of Runfold, have compartment walls that must be resealed whenever services change. On a hospital site such as Farnham Community Hospital, 1.5 miles to the north-west of Runfold, fire-rated sealant goes in where the specification calls for it, with the work planned around the estates team’s permits.

Runfold is about 2 miles east of Farnham, in Surrey. Runfold sits inside our coverage and the rest of Surrey, with the same fixed quotes and 12-month guarantee as everywhere else. 379 places across Surrey fall within our area, including Runfold. Sites around Reading have their own page, roughly 19 miles from Runfold.

If you need fire stopping in GU10 and GU9, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. If your site is on Greenacres, Crooksbury Road and Compton Way or close by, we can quote for service penetrations. We also cover Compton (1 mile west), The Sands (1 mile east), Sandy Cross (1 mile north-east), Badshot Lea (1 mile north) and Seale (2 miles north-east) for service penetrations. Bigger towns within reach include Guildford (8 miles east), Woking (11 miles north-east), Camberley (9 miles north), Frimley (7 miles north), Haslemere (9 miles south) and Cranleigh (13 miles east).

Landmarks near Runfold

Recent enquiries here include premises near Crooksbury Hill. The nearest railway station is Farnham station, about 1.7 miles west. Other landmarks nearby include Farnham Castle (2.2 miles west) and Museum of Farnham (2.2 miles west). The countryside around Runfold includes Culverswell Hill and Aunt's Pool.

Map of Runfold © OpenStreetMap contributors

Your questions answered

How does the move away from BS 476 affect penetration seals in Runfold?

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 work in a care setting near Runfold go ahead while residents are there?

Yes, with the manager deciding the order and timing of rooms. Noise and disruption are kept to a minimum.

Is colour matching possible?

Often, yes. Many products come in a range of standard colours, and matching to RAL references or surrounding finishes is often possible. We’ll confirm the colours available for the specified product.

How long does a typical visit take?

It depends on the scope, though a typical visit usually takes anything from one day to a planned run of visits, depending on the number of seals and the access. Larger or phased jobs take longer, and we will give you a timescale with the quote.

Do you take on multi-site work?

Yes. A group of buildings can go on one quote, with one point of contact across South East England, Greater London and Scotland.

Do you take on small jobs?

Single areas, one-off repairs and whole buildings are all quoted the same way: details, then a fixed price, then sealing, then a 12-month guarantee.

Who decides which product is used?

The specification comes first, if there is one. Without one, the joint decides: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.

Common problems we fix in Runfold

A common fault is a product that was never fire-rated in the first place: expanding foam or a general-purpose sealant pushed into a gap to tidy it. It may look closed, but it has no tested fire performance in that position.

Things that typically lead to an enquiry:

  • Open linear gaps along the top of fire-resisting walls
  • Seals disturbed by maintenance and left open
  • Builders’ foam or ordinary silicone in compartment walls
  • Fire sealant pulled out of the opening

Office fit-outs on sites such as The Sands Business Centre, less than half a mile north-east of Runfold, add cabling and pipework through fire-resisting walls, and fire-rated sealant goes in where the specification calls for it.

What your quote should include

  • Can the work be phased to keep areas open?
  • Are they CHAS accredited or on Constructionline?
  • Will failed sealant be removed rather than covered?
  • The named product and why it was chosen

Our contractor checklist

How the job changes by surface

Linear joints

Head-of-wall gaps, slab edges and wall junctions are linear joints. BS EN 1366-4 testing sets the joint widths, depths, backing and movement a seal covers.

Small ducts

Some fire-rated sealant details cover small ducts. Larger or fire-rated ductwork usually needs a different solution set by the designer and we flag that rather than guess.

Work for main contractors and building owners

Main contractors use us as their sealant subcontractor. Programme, specification and site rules come first.

CHAS accredited and a Constructionline member, we’re straightforward to vet for your supplier list. We are fully insured, and our insurance certificate can go with the quote.

From enquiry to sign-off

We begin with a short walk round with whoever looks after the building, to confirm the scope, the order of work and any areas we must keep clear. Then we strip out anything that has failed, prepare every joint and seal it. For a building around Runfold, tell us how to find it and who will meet us. Send that with the details and we’ll confirm the plan with the quote.

  1. We ask for the product and detail your designer has specified.
  2. Openings are measured and grouped by detail.
  3. Improvised fillers and failed sealant are removed.
  4. Mineral wool or other backing is fitted where required.
  5. Fire-rated or intumescent sealant goes in around the services and is tooled off.
  6. We walk the completed areas with you and confirm the records agreed at quote stage.

Before we start on site

  • Share your working hours and any access restrictions
  • Share the asbestos register for older buildings
  • Agree which areas must stay open

Ask for a quote

A handful of photographs and a postcode is the fastest way to a quote. Send them through the quote form, or phone 01277 525 020 or email a schedule or drawings if you’d rather talk the job through.

Get a quick quote

Related advice

General trades versus a specialist

Certain joints really need a specialist: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. A poor seal in places like these tends to cost more to put right later.

Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.

Accreditations

Trusted. Accredited. Insured.