Fire-rated sealing and fire stopping in Alderholt, Hampshire
Fire-rated and intumescent sealing of service penetrations and linear gaps in Alderholt. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Expanding foam used as fire stopping
- Openings found when ceilings come down for a refit
- Fire sealant pulled out of the opening
Fire stopping for Alderholt sites
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Fire stopping for commercial buildings in Alderholt
The test standards are BS EN 1366-3 for penetration seals and BS EN 1366-4 for linear joints. That classification, such as EI 60 or EI 120, belongs to the product in its tested arrangement. So our job is to reproduce that arrangement faithfully. We work on cable penetrations, small duct penetrations where the tested detail allows and joints between fire-resisting walls and floors, and the usual reasons a site gets in touch are head-of-wall gaps with no fire seal and fire-stopping items raised at inspection or handover. For commercial sealant work in Alderholt, you deal with one contact from quote to sign-off, whether it’s one building or several.
Around smaller places like Alderholt, many commercial buildings are conversions or extensions of older ones, so the wall or floor a service passes through isn’t always what the drawings assume. The right product depends on the wall or floor and the services passing through, and we will tell you if the detail calls for something other than sealant.
We sign every job off with a 12-month guarantee. It’s a plain promise: if our work fails within that year, we put it right.
- Location
- Alderholt (SP6)
- Region
- Hampshire
- Guarantee
- 12 months on our workmanship
- Quotes
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Page updated
- 3 November 2026
Signs you need fire stopping in Alderholt
Some service penetrations were never sealed at all. Inspections, refurbishments and ceiling access normally bring them to light.
It’s worth sending us details if you spot any of the following:
- Improvised or mixed-product fire seals
- Fire sealant pulled out of the opening
- Non-fire-rated filler around services
- Unsealed joints where partitions meet the slab
At a healthcare site like Fordingbridge Hospital (1.9 miles north-east of Alderholt), new services through compartment walls are a constant, and each needs the specified seal.
Questions to ask before you book
- Who will actually carry out the work
- The terms of the workmanship guarantee
- Their plan for phasing and protecting the area
- What site paperwork they can supply
Looking after the joints
To get the most from the new sealant:
- Keep general-purpose fillers away from compartment walls
- Flag new cables with no seal around them
- Ask the designer to confirm details early on refits
- Record which product was used where
Allow the manufacturer’s stated cure time before boxing in or decorating. Not every fire-rated product can be painted, so check the product data first.
Regular walk-rounds of service areas are worth the time. Catching a damaged seal early keeps the fix small.
FAQs: Alderholt
Is Fordingbridge Business Park, near Alderholt, within your area?
Yes. Our area takes in Alderholt and its surroundings, with estates and business parks such as Fordingbridge Business Park included. To start, just call the office on 01277 525 020 or email the details over with the unit, the joints involved and your access times.
What does the BS 476 change mean for fire-rated sealant in Alderholt?
From 2 September 2029, Approved Document B drops its BS 476 references in favour of BS EN 13501-2 classification, with transitional arrangements. Whichever applies, we install the specified product to its tested detail; the specification is for the designer to set.
Are you CHAS accredited?
Yes. CHAS accredited, Constructionline member, and our applicators hold CSCS cards.
Can you work to our specification?
Yes. We follow the specification, along with the manufacturer’s installation guidance, and we raise anything unclear before work begins.
What’s the quickest route to a quote?
The quote form is the simplest route, though you can also give us a call on 01277 525 020 or send details through our quote form. Photos, drawings or a joint schedule help us quote quickly.
Do you need to see the site first?
Photos, drawings or a schedule are often enough to quote. Where they aren’t, we arrange a site visit before quoting.
Is Alderholt in your area?
Yes. We take on work across Alderholt, with one number for every area we cover.
Commercial clients in Alderholt
Housing associations and managing agents often need work done across blocks and communal areas. Work can be phased so residents and staff keep access throughout, with each stage agreed with your site contact.
CHAS accredited and a Constructionline member, we make supplier vetting simple. We’re fully insured, and our insurance certificate can go with the quote.
What we can’t put right
Before quoting, we check that sealant is the right answer. It won’t put right:
- Reviewing a building’s overall fire safety
- Large openings beyond what any sealant detail covers
- Writing the fire-stopping specification
If you are not sure, just call 01277 525 020 or send photos by email and we’ll give you a straight answer.
What we seal
- Small duct penetrations where the tested detail allows
- Cable penetrations
- Pipe penetrations
- Joints between fire-resisting walls and floors
- Service gaps in risers
- Linear gaps at wall heads
Why act early in Alderholt
Open service penetrations matter on ordinary days, not just in a fire: smoke, noise and draughts pass through them every day. The specified fire seal closes the gap for all of these and the building feels the difference. A failed joint lets water into a building whatever its size. Early resealing avoids the damage that follows a leak.
There’s no price list, because the scope varies so much from one building to the next. Call for a quote.
Why choose Mastic Doctor in Alderholt
- Work carried out by CSCS-carded applicators
- Clear, fixed quotes
- One contact handling all your sites
- CHAS accredited contractor
Take a look at our cost guide and our accreditations.
Towns and villages near Alderholt
What else we do in Alderholt
Fire-rated sealing for Alderholt buildings
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.
For a building such as Church of St James, new heating or data runs are the usual reason penetrations need sealing. In a school such as St James' Church of England First School, fire-rated sealant goes in around service penetrations where it is specified.
Alderholt is in Hampshire. Looking for fire stopping in Alderholt? We can help. Alderholt is one of 723 places we cover in Hampshire. We also cover Southampton, some 19 miles away.
Work on service penetrations is covered throughout SP6, for business premises of every kind. If your site is on Station Road, Antell's Way and South Hill or close by, we can quote for service penetrations. Being close to the B3078, Alderholt is straightforward for us to reach. Sites close to Alderholt are covered too, including Sandleheath (1 mile north), Ashford (2 miles north-east), Broxhill (2 miles west), Damerham (2 miles north-west) and Rockbourne (4 miles north). Further afield, our area takes in Totton (14 miles east), New Milton (13 miles south-east), Ringwood (5 miles south-east), Barton on Sea (14 miles south-east), Ashley (13 miles south-east) and Eling (15 miles east).
Local landmarks in Alderholt
Locally, jobs take us to sites close to The Churchill Arms and The Burgate School and Sixth Form, among other places. Other landmarks nearby include Godshill Castle Hill (3.6 miles north-east) and Fordingbridge Doll Museum (2 miles north-east). Not far away are Blashford Lakes and Linbrook Lake.
How a job runs
On arrival, we sign in, go through any site induction and check how permits are handled. Floors, finishes and fittings next to the joints are covered before any cutting starts, with the work itself normally taking anything from one day to a planned run of visits, depending on the number of seals and the access. For a site in Alderholt, we plan so the whole job is done in one go where possible. Clear photos and measurements help us bring the right products.
- We start with your penetration schedule, drawings or specification.
- Access, permits and the order of areas are agreed with the site team.
- We compare every service penetration with its tested detail before sealing.
- Foam, ordinary sealant and debris come out so the seal starts clean.
- Backing and fire-rated sealant are installed to the detail and tooled.
- We tell you about openings that need a different product.
Before we start on site
- Tell us what induction or permit system the site runs
- Explain the parking and delivery arrangements
- Tell us your opening times and when work is allowed
Getting a fixed quote
Need a figure for a tender or a budget? We will quote against your scope and drawings that you can work with. For a chat about it beforehand, ring 01277 525 020 or use the quote form.