Fire-rated sealing and fire stopping in Sandleheath, Hampshire
Planning work on a service penetration in Sandleheath? We look at it, seal it with the right product and hand it over with a 12-month guarantee.
- Fire stopping installed outside its tested range
- Expanding foam used as fire stopping
- Fire seals cut back for extra cables and never reinstated
Fire stopping for businesses in Sandleheath
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 Sandleheath
On a fit-out or refurbishment, we follow the services contractors floor by floor. To price a package, ring 01277 525 020 or email a schedule or drawings with the schedule or marked-up drawings alongside the manufacturer’s details. Tell us what records you need and we’ll confirm with the quote. If you’re dealing with non-fire-rated filler around services and old intumescent sealant that has split away, we can put it right. Facilities teams, main contractors and managing agents in Sandleheath tend to want the same three things: a clear scope, tidy work and joints that don’t fail again.
Rural conversions around Sandleheath 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.
Work we carry out comes with a 12-month guarantee. Should something we installed fail, call the office on 01277 525 020 or send details through our quote form and we’ll come back to it.
- Place
- Sandleheath (SP6)
- Wider area
- Hampshire
- Guarantee
- 12 months on every job
- Quote
- Quoted before any work starts
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
Your questions answered
How does the removal of BS 476 from Approved Document B affect fire-rated sealing in Sandleheath?
Approved Document B loses its BS 476 references from 2 September 2029, and BS EN 13501-2 becomes the route, subject to transitional arrangements. Whichever applies, we install the specified product to its tested detail; the specification is for the designer to set.
Is a hospital such as Fordingbridge Hospital somewhere you can work?
Yes, provided the work is planned with the site’s estates team. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.
Does weather matter for sealant work?
For external joints, yes. The joint has to be dry and within the product’s temperature range, so frost, rain or cold mornings can delay outside work. Internal work is rarely affected.
Will you just go over the old sealant?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.
Are you fully insured?
Yes. Mastic Doctor is fully insured, public liability included.
Who decides which product is used?
If the job is specified, we follow the specification. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.
Can the sealant be colour-matched?
In many cases, 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.
What happens if it’s left?
Open penetrations multiply: each new service adds to the list. A schedule that is dealt with regularly stays manageable and avoids a much larger catch-up later. One visit to deal with every failing joint makes more sense than several trips to a place like Sandleheath, rather than one at a time. Photos of every joint help us quote for the whole job.
A quote for service penetrations depends on how many there are, their condition and the access, plus any specification you’re working to. Ask us for a fixed quote.
What you get with us
- Specification-led, product-correct work
- Constructionline member
- Joints cleaned back to sound surfaces
- 12-month guarantee on workmanship
Take a look at our cost guide and our accreditations.
What the job involves on each surface
Masonry and concrete
Openings through concrete vary from tidy cores to rough break-outs. Each gap is measured where it is widest so we know it sits within the tested range, and any that don’t are flagged.
Plastic pipes
In a fire, plastic pipework melts away and leaves an opening. Small sizes are sometimes covered by an intumescent sealant detail. We check the pipe material and diameter against the detail before we start.
Should maintenance staff do it?
The visible bead is only part of the job. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.
General builders and handymen seal joints, but it isn’t their main trade. A specialist prepares properly, controls joint depth and picks a product with the right movement class.
When it isn’t the sealant
Not every problem is a sealant problem, and we’re upfront when that’s the case. These need a different solution:
- Signing off or certifying a building’s fire stopping
- Fire doors, dampers or other fire safety equipment
- Deciding what a wall or floor needs, which belongs to the designer
If you’re not sure, just call 01277 525 020 or send photos by email and we’ll give you a straight answer before you book.
Surfaces we seal
- Cable penetrations
- Service gaps in risers
- Joints between fire-resisting walls and floors
- Linear gaps at wall heads
- Small duct penetrations where the tested detail allows
- Pipe penetrations
Fire stopping around Sandleheath: what changes locally
Approved Document B is the English guidance that covers fire stopping around 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. Our part stays the same: the specified product, installed to its tested detail.
On estates like Sandleheath Industrial Estate (under half a mile north-east of Sandleheath), the wall between office and warehouse is often fire-resisting, and cables through it need the specified seal. For a school such as The Burgate School and Sixth Form, penetration sealing fits best at the end of the summer works.
Sandleheath is in Hampshire. We send applicators to Sandleheath for service penetrations. Our Hampshire coverage takes in 723 places, from busy centres to rural villages. For work in that direction, see our Southampton page, about 19 miles away.
If you need fire stopping in SP6, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. Among the streets we cover are Elms Close, Main Road and Old Brickyard Road. Close to Sandleheath, our area also takes in Ashford (1 mile east), Alderholt (1 mile south), Damerham (1 mile north-west), Rockbourne (2 miles north) and Broxhill (2 miles south-west). Bigger towns within reach include Totton (14 miles east), Romsey (15 miles east), New Milton (14 miles south-east), Ringwood (6 miles south), Barton on Sea (15 miles south-east) and Ashley (14 miles south-east).
Local landmarks in Sandleheath
A little further out are Fordingbridge Museum (1.5 miles east) and Godshill Castle Hill (2.7 miles east). Green spaces nearby include Blashford Lakes.
When to call us in Sandleheath
Most open service penetrations are left by later work. New cabling, rerouted pipework or a data route drilled through a riser can leave the hole behind. Across several fit-outs, the openings add up.
Clients normally get in touch after noticing something like this:
- Builders’ foam or ordinary silicone in compartment walls
- Snag lists that include open service penetrations
- Fire seals cut back for extra cables and never reinstated
- Service penetrations left open after M&E works
Older community buildings such as Sandleheath Uniting Church that have been rewired or given new heating can have service gaps through walls worth checking against the specification.
Before you book anyone
- How the existing material will be dealt with
- How joint depth will be controlled
- How the joint faces will be prepared and primed
- How long is the guarantee, and what does it include?
On site: what to expect
When we get to site, we sign in, go through any site induction and check how permits are handled. Everything around the joints gets protected before anything is cut or cleaned, with the work itself usually taking a single visit for a short list of penetrations, or a phased programme for a whole building. Rural sites near Sandleheath may need directions, gate codes or a contact on site. Send that with the details and we will confirm the plan with the quote.
- We start with your penetration schedule, drawings or specification.
- We plan the sequence of floors, risers and voids with you.
- We compare every service penetration with its tested detail before sealing.
- Unsuitable material is removed and the opening cleaned first.
- The specified backing and sealant go in to depth and are finished neatly.
- Anything outside the detail is reported to you rather than sealed.
Preparing the site
- Move anything stored against the joints
- Tell us what induction or permit system the site runs
- Send your site hours and access windows
Quotes
Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, speak to us on 01277 525 020 or send photos by email.