Fire-rated sealing and fire stopping in Harefield, Southampton
Our CSCS-carded applicators take on fire-rated and intumescent sealing of service penetrations and linear gaps in Harefield. Send photos or drawings for a fixed quote.
- Expanding foam used as fire stopping
- Unsealed penetrations discovered above suspended ceilings
- Seals that don’t match their tested detail
Need fire stopping in Harefield?
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 Harefield
A fire-rated sealant is only one part of a tested system: its test evidence covers one product in one kind of wall or floor, with set services, gaps, depths and backing. Before we seal anything, we check the opening against the detail it is meant to follow, and we say so if it doesn’t fit. If you’re dealing with old intumescent sealant that has split away and seals that don’t match their tested detail, we can help, whatever the surface. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: in Harefield, that means joint design, primers and backing rod as standard.
In places the size of Harefield, fire-resisting walls and floors are found in schools, care homes, health centres and mixed-use buildings. Around those penetrations, fire-rated sealant is installed if specified, with depth, backing and gap all as tested.
Building owners and contractors get the same cover: a 12-month guarantee on our workmanship. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.
- Where
- Harefield (SO18, SO19, SO30)
- Region
- Southampton
- Guarantee
- 12 months on our workmanship
- Quotes
- A fixed quote before we start
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Common questions from Harefield clients
Can you seal penetrations in a hotel in Harefield after a refit?
Yes, to the specification and the product’s tested detail. We match the product to the wall or floor and the services, and say if something other than sealant is needed.
Can you work at a site such as Hedge End Retail Park, by Harefield?
Yes. Our area takes in Harefield and its surroundings, with estates and business parks such as Hedge End Retail Park included. A few photographs and the unit address let us price the work.
Will you come and look before quoting?
Many jobs can be quoted from photographs, drawings or a joint schedule. Where they aren’t, we arrange a site visit before quoting.
What if there’s asbestos in the old mastic?
The duty to manage asbestos sits with the building’s dutyholder, so for older buildings we ask for the asbestos register first. Work pauses if suspect material is found, until it has been tested.
Do your applicators hold CSCS cards?
Yes. We use CSCS-carded applicators.
Can you work while the building is occupied?
Yes, with some planning. Tell us your site hours and access windows and we’ll plan around them.
How many days will you need on site?
The duration is planned around your programme and the access we’re given. We will give you an estimate of time on site when we quote.
What sealant work can’t fix
Being straight saves everyone time. New sealant won’t cure:
- Deciding what a wall or floor needs, which belongs to the designer
- Large openings beyond what any sealant detail covers
- Approving the work on behalf of building control
Not sure which it is? You can ring 01277 525 020 or email us and we will tell you honestly.
Surfaces we seal
- Service gaps in risers
- Linear gaps at wall heads
- Joints between fire-resisting walls and floors
- Small duct penetrations where the tested detail allows
- Cable penetrations
- Pipe penetrations
Surface by surface
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’ll never swap a specified collar for sealant.
Cables and cable bundles
New data and power cables are the most common breach we see. Openings around new cables are resealed to the detail, and any bundle too large for sealant alone is flagged.
When to call us in Harefield
Linear gaps fail where a fire-resisting wall meets a slab, soffit or another wall. Deflection and building movement can open these gaps, and a product not tested for that movement may crack. The tested detail for a linear joint states the width and movement it covers.
Any of the following is a good reason to get the joints checked over:
- Snag lists that include open service penetrations
- Fire stopping installed outside its tested range
- Open linear gaps along the top of fire-resisting walls
- Builders’ foam or ordinary silicone in compartment walls
Hotels like Bitterne Park Hotel, 1.5 miles west of Harefield, are refurbished in phases, and each phase can open up compartment walls.
What your quote should include
- Whether primer will be used where the manufacturer specifies it
- Their public liability cover
- How joint depth will be controlled
- Health and safety accreditation such as CHAS
How the quote is worked out
There’s no standard rate for sealant work, since sites vary so much. What we take into account:
- The product specified
- The site’s rules and procedures
- Working within restricted access windows
- Quantities, in metres or numbers
Access often affects the price as much as the sealing: joints within easy reach take less time than ones that need access equipment. Tell us how the joints are reached and call for a quote.
What we need to price the job
A good diagnosis starts with the right details. Tell us:
- Whether an asbestos survey exists
- Any specification or named product
- When you need the work done
- How the joints are reached, and at what height
To get a fixed quote, give us a call on 01277 525 020 or email the details over with the site address and an outline of the work. Our quote form is another easy route.
Fire stopping around Harefield: what changes locally
There are several hotels within about 2 miles of Harefield. Hotels are divided into compartments, and refurbishments that add pipes and cables through bedroom and corridor walls leave gaps to close. Central London is about 67 miles from Harefield. Business park offices in the commuter belt are refitted as tenants change, and each fit-out adds services through compartment walls, and the gaps need sealing with the specified product.
Colleges such as Itchen College (to the south-west of Harefield) add IT and services as courses change, and each new penetration through a fire-resisting wall needs sealing with the specified product. At a university such as University of Southampton, 2.6 miles west of Harefield, labs, lecture blocks and residences are re-serviced often, so penetration seals are best checked after M&E work.
Harefield is about 2 miles east of Southampton, in Southampton. We cover Harefield, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. 30 places across Southampton fall within our area, Harefield among them.
If you need fire stopping in SO18, SO19 and SO30, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. For a building on Dean Road, Marne Road and Keats Road or nearby, send details and we will quote for service penetrations. With the A334 nearby, Harefield is easy to get to with materials and equipment. We also cover Thornhill (1 mile south), West End (1 mile north), Chartwell Green (1 mile north), Bitterne (1 mile south-west) and Townhill Park (1 mile north-west). Further afield, our area takes in Shirley (4 miles west), Regents Park (4 miles west), Maybush (5 miles west), Coxford (4 miles west), Freemantle (4 miles west) and Lordswood (4 miles north-west). Harefield ranks among the main centres of Southampton, with offices, shops, schools and other public and commercial buildings, and we cover them all.
Local landmarks in Harefield
In Harefield, that means premises near The Gregg School, Woodlands Community College and The Red Lion pub and the streets around them. For rail, the closest station is Bitterne station, roughly 1.5 miles west. A little further out are Moorgreen Hospital (1.1 miles north-east) and Netley Castle (3 miles south). Green spaces nearby include Netley Common.
Places near Harefield
Also in Harefield
General trades versus a specialist
Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist brings efficiency, a consistent finish and a 12-month guarantee.
There’s also the paperwork. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we’ll confirm the paperwork you need with the quote.
How a job runs
Occupied buildings need a little choreography. We sign and contain the area we’re in, keep walkways clear and move on in phases so staff and visitors can carry on around us. For a site in Harefield, we plan so the whole job is done in one go where possible. Clear photographs and measurements help us bring the right products.
- First we go through the drawings, schedule or specification for the seals and ask about anything unclear.
- 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.
- Fire-rated or intumescent sealant is gunned in to the specified depth, then tooled.
- Openings that need a collar, wrap, batt or other product are flagged to you rather than filled with sealant.
Before we start on site
- Send any specification or drawings in advance
- Move anything stored against the joints
- Send your site hours and access windows
Request a quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, give us a call on 01277 525 020 or email the details over.