Fire stopping in Charleshill
Fire-rated and intumescent sealing of service penetrations and linear gaps throughout Charleshill and nearby, by CSCS-carded applicators. CHAS accredited and fully insured.
- Fire stopping installed outside its tested range
- Snag lists that include open service penetrations
- Unsealed joints where partitions meet the slab
Fire stopping for businesses in Charleshill
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
About our fire stopping in Charleshill
For main contractors, our fire stopping package slots in after the M&E trades have finished in an area. To price a package, phone 01277 525 020 or send details through our quote form with the schedule or marked-up drawings alongside the manufacturer’s details. Tell us what records you need and we will confirm with the quote. We work on joints between fire-resisting walls and floors, small duct penetrations where the tested detail allows and linear gaps at wall heads, and the failures we are asked to look at most are head-of-wall gaps with no fire seal and seals disturbed by maintenance and left open. Whether you call it commercial sealant work, mastic application or joint sealing, the work in Charleshill is the same: the right product in a properly prepared joint.
A job near Charleshill is usually planned around one visit, with the specification and photos sent in advance. Design and sign-off belong to the designer or building control; we install what’s specified.
Whoever the client is, the cover is the same: twelve months on the work we carried out. It doesn’t extend to damage, faults in the building or work by others, and we’re upfront about that.
- Where
- Charleshill (GU10)
- Wider area
- Surrey
- Cover
- A 12-month guarantee
- Quote
- A fixed quote before we start
- Call
- 01277 525 020
- Updated
- 3 November 2026
Doing it in-house
Putting right a botched joint often costs more than sealing it well at the start, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.
General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint.
What sets the cost
A fixed quote reflects the actual work. It allows for:
- Removal of failed or old sealant
- The total length or number of joints
- Access and working height
- Induction, permit and paperwork requirements
There’s no price list, since every building and every scope is different. Call for a quote.
Before you send an enquiry
The more we know, the firmer the quote. Helpful details to send:
- The type of building and who uses it
- Rough lengths or quantities, or drawings if you have them
- Photos of the joints, close up and from further back
- Anything awkward about access or site hours
For a fixed quote, call the office on 01277 525 020 or email drawings and photos with the site address and an outline of the work. Our quote form is another easy route.
Nearby places to Charleshill
What else we do in Charleshill
On site: what to expect
At the end of each section, the masking comes off, the area is cleaned and every joint is checked with your site contact. If an area should be left alone while the sealant cures, we say how long and put signs out. For work around Charleshill, we aim to finish in one visit, so we ask for photographs and rough sizes first. Then the right materials arrive with us.
- We ask for the product and detail your designer has specified.
- Openings are measured and grouped by detail.
- Improvised fillers and failed sealant are removed.
- Mineral wool or other backing is fitted where required.
- We gun the sealant in to the specified depth around each service and tool it.
- Completed areas are checked with you, with the records agreed when we quoted.
Before we start on site
- Point out parking and an unloading spot
- Confirm the product named in the specification
- Warn occupants and staff about the work
Quotes
Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we’ll return a fixed quote that you can work with. For a chat about it beforehand, call 01277 525 020 or use the quote form.
Read more
How the job changes by surface
Cables and cable bundles
Cable penetrations are frequently sealed with fire-rated sealant where the detail allows. The detail limits bundle size and the gaps between and around cables and we work within those limits.
Plastic pipes
In a fire, plastic pipework melts away and leaves an opening. Some intumescent sealants are tested on smaller plastic pipes, but many need a collar or wrap. We check the pipe material and diameter against the detail before we start.
After the work
Sealant joints are maintenance items, and their life depends on movement, exposure, cleaning and use. We suggest:
- Treat an open penetration as a priority repair
- Include service cupboards in routine inspections
- Agree the fire-stopping specification before services go in
- Brief every trade that openings they make must be sealed
Once the seals are in, tell other trades they exist and must not be disturbed. If a seal has to be opened for a new service, it should be reinstated to the same detail.
On fit-outs, get the fire-stopping specification agreed before the services go in. Details can then be picked to suit the actual pipes, cables and ducts.
Questions we’re asked in Charleshill
How does the removal of BS 476 from Approved Document B affect fire-rated sealing in Charleshill?
Approved Document B loses its BS 476 references from 2 September 2029, and BS EN 13501-2 becomes the route, subject to transitional arrangements. The designer or fire engineer sets the specification, and we install the product to the manufacturer’s tested detail.
Is Charleshill too far out for you?
No. Small places get the same service as large ones. Our area covers London and the South East counties. Where we can, we group nearby jobs to make the most of each trip.
Will you quote for a small job?
Small jobs are welcome alongside larger packages. Send details for a fixed quote.
How do you deal with asbestos in old sealant?
Asbestos is possible in some older mastics, particularly in buildings from before 2000. We check the asbestos register before cutting out old sealant in an older building, and work stops until any suspect material has been tested. Removing asbestos is a job for asbestos specialists, not us.
How long does a job like this take?
The duration is planned around your programme and the access we’re given. You will have an expected duration with the quote.
Are you insured?
Yes. Mastic Doctor is fully insured, public liability included.
How long do sealant joints last?
There isn’t a single answer, since movement, weather, cleaning and use all affect it. Regular checks let you plan resealing before leaks or damage.
When to call us in Charleshill
Most open service penetrations are left by later work. A new cable pulled by an electrician, a pipe rerouted by a plumber or a data run drilled through a riser can leave the hole behind. Across several fit-outs, the openings add up.
If one of these sounds familiar, it’s time for a closer look:
- Unsealed penetrations discovered above suspended ceilings
- Unsealed openings around new pipes and cables
- Fire sealant pulled out of the opening
- Fire seals cut back for extra cables and never reinstated
On a site such as The Sands Business Centre (1.7 miles north-west of Charleshill), every fit-out that runs new services through a compartment wall leaves penetrations to seal with the specified product.
Questions to ask before you book
- Their pre-qualification and accreditations
- What level of public liability insurance do they hold?
- Whether old or failed sealant will be cut out, not overlaid
- Can the work be phased to keep areas open?
Fire stopping in Charleshill: the local picture
At about 35 miles from central London, Charleshill is within reach of the capital. Tenant changes on commuter-belt business parks mean regular fit-outs, and new services through compartment walls. In England, Approved Document B covers fire stopping of openings and penetrations. Its BS 476 references are being withdrawn from 2 September 2029, with BS EN 13501-2 classification taking over, subject to transitional arrangements. Either way, we install the specified product to its tested detail.
In a school such as Waverley Abbey CofE Junior School, fire-rated sealant goes in around service penetrations where it is specified. Wherever services are added at a hospital such as Milford Hospital (4.6 miles east of Charleshill) the compartment line has to be made good with the specified product.
Charleshill is about 3 miles south-east of Farnham, in Surrey. We cover commercial sites throughout Charleshill, whether it’s a single job or part of a planned programme. Our Surrey coverage takes in 379 places, large and small. Sites around Reading have their own page, about 21 miles away.
Postcode districts covered here: GU10. If your site is on Farnham Road and Whitmead Road or close by, send details and we’ll quote for service penetrations. Being close to the B3001, Charleshill is straightforward for us to reach. Close to Charleshill, our area also takes in Tilford (1 mile west), Elstead (1 mile south-east), Tilford Common (2 miles south-west), Tilford Reeds (2 miles west) and Rushmoor (3 miles south-west). A short drive away, we cover Guildford (8 miles north-east), Woking (11 miles north-east), Camberley (10 miles north), Farnham (3 miles north-west), Frimley (8 miles north) and Haslemere (7 miles south).
Around Charleshill
We work on buildings around The Donkey pub and Thundry Meadows. For rail, the closest station is Farnham station, about 3.2 miles north-west of the centre. Nearby you will also find Museum of Farnham (3.7 miles north-west) and Milford Hospital (4.6 miles east). The countryside around Charleshill includes Runfold Wood and Upper Lake.