Fire-rated sealing and fire stopping in Thedden, Hampshire
Sealant work in Thedden for main contractors, managing agents and facilities managers: fire-rated and intumescent sealing of service penetrations and linear gaps, with a fixed quote first.
- Openings left by services added after handover
- Head-of-wall gaps with no fire seal
- Improvised or mixed-product fire seals
Fire stopping for Thedden sites
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Do you need fire stopping in Thedden?
Most open service penetrations are left by later work. New cabling, rerouted pipework or a data route drilled through a riser leaves an opening that nobody returns to. Across several fit-outs, the openings add up.
These are often picked up first by site or facilities staff:
- Fire sealant pulled out of the opening
- Non-fire-rated filler around services
- Unsealed openings around new pipes and cables
- Fire-stopping items raised at inspection or handover
On a hospital site such as Alton Community Hospital, which lies east of Thedden, fire-rated sealant goes in where the specification calls for it, with the work planned around the estates team’s permits.
Comparing quotes
- Whether their applicators hold CSCS cards
- Is the sealant right for the movement and the substrate?
- Do they follow the manufacturer’s priming guidance?
- What level of public liability insurance do they hold?
About our fire stopping in Thedden
Sealant is the specified answer for plenty of openings, such as metal pipes, cables and some small ducts where the detail covers them. Other openings need collars, wraps, batts, pillows or boards. If the detail calls for something other than sealant, we say so rather than force sealant into it. Most enquiries involve snag lists that include open service penetrations and seals disturbed by maintenance and left open, across cable penetrations, service gaps in risers and small duct penetrations where the tested detail allows. Whether you call it commercial sealant work, mastic application or joint sealing, in Thedden it comes down to the same thing: the right product in a properly prepared joint.
Rural conversions around Thedden 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.
Every job we finish is backed by a 12-month workmanship guarantee, wherever the site is. If our installation lets you down in that time, we return and fix it.
- Place
- Thedden (GU34)
- Region
- Hampshire
- Guarantee
- 12 months on our workmanship
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Updated
- 3 November 2026
What the job involves on each surface
Plastic pipes
Plastic pipes soften and collapse in a fire. Some intumescent sealants are tested on smaller plastic pipes, but many need a collar or wrap. We confirm material and size first and tell you if sealant isn’t the right product.
Drylining partitions
Holes in board are often cut larger than needed. If the gap exceeds the tested range, sealant alone won’t do and we will tell you what the detail says instead.
When to bring in a specialist
There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and we’ll confirm the paperwork you need with the quote.
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.
From enquiry to sign-off
Site rules come first: sign-in, induction and whatever permit system the building uses. With the paperwork done, we take the joints in the sequence agreed with you. For a building around Thedden, tell us how to find it and who will meet us. Add it to your enquiry and we will build it into the plan.
- We ask for the product and detail your designer has specified.
- We sort the openings by the detail each one needs.
- Old or wrong materials are cut out.
- Where the detail needs backing, it goes in at the stated depth.
- Fire-rated or intumescent sealant goes in around the services and is tooled off.
- Completed areas are checked with you, with the records agreed when we quoted.
Getting the site ready
- For older buildings, check the asbestos register before work
- Move anything stored against the joints
- Send any specification or drawings in advance
Quotes
To get a fixed quote, give us a call on 01277 525 020 or use the quote form, telling us the site location and the nature of the job. You can also send details through our quote form.
Related advice
Your questions answered
What happens to BS 476 references for fire stopping in Thedden?
References to BS 476 classes are being removed from Approved Document B from 2 September 2029, after which BS EN 13501-2 classification is the route, subject to transitional arrangements. Our part doesn’t change: the specified product, to its tested detail.
Is Thedden too small for you to travel to?
No. Small places get the same service as large ones. Our area covers London and the South East counties. We plan jobs in smaller places so return trips are kept to a minimum.
What happens if old sealant might contain asbestos?
The duty to manage asbestos sits with the building’s dutyholder, so for older buildings we ask for the asbestos register first. If anything suspect turns up, we stop until it’s tested.
Does the weather affect the work?
It can, for external work. Sealant won’t bond properly to a wet or frosty joint, so external work may be moved if conditions aren’t right. Indoors, the weather is rarely a problem.
How long does a typical visit take?
We plan the time on site around your programme and access. We will give you an estimate of time on site when we quote.
Do you have public liability insurance?
Yes. We’re fully insured, including public liability cover.
When can you be on site?
Give us your site hours and any access windows in your enquiry, and we will schedule the work to suit. You can reach the office between 8am and 5pm, Monday to Friday.
Other services in Thedden
Why deal with it now?
Sealing behind the M&E trades area by area beats a sweep at the end. Openings are visible, access is open and nothing has to be taken down, and the right detail can be checked at the time. One visit to deal with every failing joint makes more sense than several trips to a place like Thedden. Photos of every joint help us quote for the whole job.
We don’t publish prices, because the scope varies so much from one building to the next. Call for a quote and we will price your job on its own details.
Why us?
- Public liability insurance in place
- One phone line for London, the South East and Scotland
- CHAS accredited contractor
- Joints cleaned back to sound surfaces
Take a look at how commercial sealant jobs are priced and how we’re accredited.
What we can’t put right
Before quoting, we check that sealant is the right answer. It won’t put right:
- Approving the work on behalf of building control
- Walls or floors that aren’t fire-resisting to begin with
- Designing or specifying fire stopping, which sits with the designer or fire engineer
Not sure which it is? You can phone 01277 525 020 or use the quote form and we’ll tell you honestly before you book.
Surfaces we seal
- Pipe penetrations
- Cable penetrations
- Service gaps in risers
- Small duct penetrations where the tested detail allows
- Linear gaps at wall heads
- Joints between fire-resisting walls and floors
Fire stopping in Thedden: the local picture
At about 47 miles from central London, Thedden is within reach of the capital. Offices around the capital are refitted often, and the cabling that follows can breach fire-resisting walls, and the gaps need sealing with the specified product. Approved Document B is the English guidance that covers fire stopping around openings and penetrations. From 2 September 2029, BS 476 references are being taken out of Approved Document B, leaving BS EN 13501-2 classification as the route, subject to the Government’s transitional arrangements. What we install is set by the specification, and it goes in to the tested detail.
Schools such as Amery Hill School often have new data and services installed during holidays, and penetrations through fire-resisting walls should be checked afterwards. For a building such as St Peter's, new heating or data runs are the usual reason penetrations need sealing.
Thedden is about 2 miles west of Alton, in Hampshire. Commercial clients in Thedden can call on us for service penetrations. Our Hampshire coverage takes in 723 places. Our Reading page has more on work in that area (21 miles or so).
Business premises anywhere in GU34 are within our area. Just outside Thedden, we also work in Beech (1 mile south-east), Wivelrod (1 mile south-west), Bentworth (1 mile north-west), Holt End (1 mile west) and New Copse (2 miles west). A short drive away, we cover Basingstoke (9 miles north), Winchester (14 miles south-west), Farnborough (15 miles north-east), Fleet (12 miles north-east), Aldershot (13 miles north-east) and Petersfield (10 miles south).
Local landmarks in Thedden
The nearest railway station is Alton station, roughly 2.6 miles east of the centre. Nearby you’ll also find Alton Community Hospital (1.6 miles east) and Barton Castle (3.9 miles west). Open spaces near Thedden include King's Hill.