
Fire Stopping in Greatham
Our CSCS-carded applicators take on fire-rated and intumescent sealing of service penetrations and linear gaps in Greatham and the surrounding area. Send photographs or drawings for a fixed quote.
- Open linear gaps along the top of fire-resisting walls
- Unsealed penetrations discovered above suspended ceilings
- Service penetrations left open after M&E works
Need fire stopping in Greatham?
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Why deal with it now?
Inspections and handover checks often pick up fire stopping. Late discoveries can delay handover while openings are reopened and resealed, so earlier action pays back. One visit to deal with every failing joint makes more sense than several trips to a place like Greatham, rather than one at a time. Send photos of each area and we’ll quote for the lot.
There’s no price list, since every building and every scope is different. Call for a quote and we’ll price your job on its own details.
Why appoint us
- A fixed quote before work starts
- Fully insured
- Work carried out by CSCS-carded applicators
- Commercial sealant work since 2005
See how commercial sealant jobs are priced and how we’re accredited.
Fire stopping for commercial buildings in Greatham
We should be clear about what we do and don’t do. Deciding the specification sits with the designer, the fire engineer and building control. What we bring is careful installation of the specified sealant, to the maker’s guidance on buildings around Greatham. The enquiries we see most involve penetration schedules that need working through and head-of-wall gaps with no fire seal, across service gaps in risers, pipe penetrations and linear gaps at wall heads. Searching for sealant specialists in Greatham? Mastic Doctor has worked for contractors, FMs and building owners since 2005.
Rural conversions around Greatham 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.
We stand by our work: 12 months, guaranteed. That covers our preparation and application, and if something we did falls short, we return to it.
- Place
- Greatham (GU33)
- Wider area
- Hampshire
- Guarantee
- 12 months on our workmanship
- Quote
- Quoted before any work starts
- Call
- 01277 525 020
- Updated
- 3 November 2026

On site: what to expect
The first thing on site is a walk round with your contact, agreeing which joints are in scope, where to start and what must stay open. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. For work around Greatham, we aim to finish in one visit, so we ask for photographs and rough sizes first. Then the right materials arrive with us.
- First we go through the drawings, schedule or specification for the seals.
- Every penetration is compared with its detail: wall or floor type, service, gap size and depth.
- Anything that doesn’t belong in the opening, such as expanding foam or general-purpose filler, is removed.
- We fit the backing the detail asks for, to the stated depth.
- We apply the specified sealant to the depth and around the services as the detail shows.
- Openings that need a collar, wrap, batt or other product are flagged to you rather than filled with sealant.
Preparing the site
- Let us know about inductions and permits
- Send your site hours and access windows
- Agree which areas must stay open
Quotes
We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To start the process, ring 01277 525 020 or use the quote form.
Read more
Should maintenance staff do it?
Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
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.
Owners, agents and contractors
When you manage a building on behalf of an owner, clear figures and clear communication matter. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative, plus a 12-month guarantee.
CHAS accredited and a Constructionline member, we make supplier vetting simple. Our insurance certificate can be sent along with the quote.
Common questions from Greatham clients
What happens to BS 476 references for fire stopping in Greatham?
Approved Document B loses its BS 476 references from 2 September 2029, and BS EN 13501-2 becomes the route, subject to transitional arrangements. Our part doesn’t change: the specified product, to its tested detail.
Will you take on work at estates like Longmoor Enterprise Park, close to Greatham?
Yes. Our area takes in Greatham and its surroundings, with estates and business parks such as Longmoor Enterprise Park included. Send details of the unit and the work through our quote form for a quick quote.
What do you charge?
That depends on the job: the volume of work, the access, the specified product and how it’s phased. Call for a fixed quote.
What’s the quickest route to a quote?
The quote form is the simplest route, though you can also call 01277 525 020 or email drawings and photos. Include photographs or drawings if you have them.
How long will the new sealant last?
It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.
Do your applicators hold CSCS cards?
Yes. If you need card details for site access, tell us and we’ll confirm them with the quote.
Can staff carry on working while you are here?
Yes, as long as we plan it. Tell us your site hours and access windows and we’ll plan around them.
What the job involves on each surface
Masonry and concrete
Block walls and concrete floors are common substrates for penetration seals. Dust and loose debris are cleared out of the opening, with backing added if the detail requires it.
Plastic pipes
Waste and drainage pipes through floors are a frequent case. Whether sealant alone is acceptable depends entirely on the tested detail, and we will never swap a specified collar for sealant.
Honest limits
A few problems need another trade or a different fix, and we say so rather than covering them up:
- Reviewing a building’s overall fire safety
- Plastic pipes whose detail calls for a collar or wrap
- Walls or floors that aren’t fire-resisting to begin with
If in doubt, call the office on 01277 525 020 or email a schedule or drawings and we’ll say what we think.
Surfaces we seal
- Service gaps in risers
- Linear gaps at wall heads
- Pipe penetrations
- Cable penetrations
- Small duct penetrations where the tested detail allows
- Joints between fire-resisting walls and floors
Fire stopping in Greatham: the local picture
For England, the fire stopping of penetrations is dealt with in Approved Document B. The national BS 476 classes are due to drop out of it from 2 September 2029, leaving the European BS EN 13501-2 route, subject to transitional arrangements. Our part stays the same: the specified product, installed to its tested detail. Central London is about 45 miles from Greatham. Business park offices in the commuter belt are refitted as tenants change, and each fit-out adds services through compartment walls; the gaps need the specified seal.
Schools such as Greatham Primary School often have new data and services installed during holidays, and penetrations through fire-resisting walls should be checked afterwards. At a healthcare site like Chase Hospital, 2.5 miles to the north-east of Greatham, new services through compartment walls are a constant, and each needs the specified seal. 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.
Greatham is about 5 miles north-east of Petersfield, in Hampshire. We send applicators to Greatham for service penetrations, handled exactly as we handle every other area. 723 places across Hampshire fall within our area, Greatham among them. We also cover Portsmouth, some 20 miles away.
Business premises anywhere in GU33 are within our area for service penetrations. Among the streets we cover are Longmoor Road, Wolfmere Lane and Todmore, and sites on any of them can send details for a fixed quote. Just outside Greatham, we also work in Longmoor (1 mile east), Woolmer (1 mile north), Liss Forest (1 mile south), Blackmoor (1 mile north) and The Mint (2 miles south). Bigger towns within reach include Havant (15 miles south), Fleet (14 miles north), Horndean (13 miles south-west), Aldershot (13 miles north-east), Alton (7 miles north-west) and Waterlooville (15 miles south-west).
Near you in Greatham
The nearest railway station is Liss station, about 2 miles south. Well-known places in the area include The Romany Museum (2.9 miles north-west) and Chase Community Hospital (2.5 miles north-east). Green spaces nearby include Liss Riverside Railway Walk North and Selborne Hill.