Fire-rated sealing and fire stopping in Durley Street, Hampshire
We carry out fire-rated and intumescent sealing of service penetrations and linear gaps in Durley Street. Send details for a fixed quote.
- Penetration schedules that need working through
- Hidden openings found during inspections
- Old intumescent sealant that has split away
Fire stopping for Durley Street sites
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Should maintenance staff do it?
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, which is what makes a joint last.
A short, simple internal joint is often within reach of a maintenance team. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
Fire stopping in Durley Street
Penetration seals are fire tested to BS EN 1366-3 and linear joint seals to BS EN 1366-4. That classification, such as EI 60 or EI 120, belongs to the product in its tested arrangement. Reproducing the tested arrangement on site is the part we take care of. We work on linear gaps at wall heads, service gaps in risers and cable penetrations, and what we’re called in for most is fire-stopping items raised at inspection or handover and non-fire-rated filler around services. Whoever orders the work in Durley Street, the brief is typically the same: a clear scope, tidy work and joints that don’t fail again.
Rural conversions around Durley Street can put new fire-resisting partitions inside older structures. A penetration seal only performs as tested if product, substrate, service, gap and depth all match the detail.
What our 12-month guarantee covers is the way we did the job: preparation, application and finish. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.
- Place
- Durley Street (SO32)
- Region
- Hampshire
- Guarantee
- A 12-month guarantee
- Quotes
- Quoted before any work starts
- Call
- 01277 525 020
- Updated
- 3 November 2026
Why it’s worth doing now in Durley Street
An open or wrongly sealed service penetration lets fire and smoke reach the next compartment much sooner than the building was designed for. While the openings can be reached, sealing them is normally straightforward. Wait until ceilings close or areas are occupied and the same work becomes harder to reach. Converted and older buildings near places like Durley Street tend to move, and aged sealant cracks. The right product, sized to the joint, copes much better.
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 Durley Street
- Constructionline member for supplier checks
- Over 20 years of commercial sealing
- A fixed quote before work starts
- Fully insured, including public liability cover
Read how commercial sealant jobs are priced or how we’re accredited.
Places near Durley Street
What else we do in Durley Street
What the job involves on each surface
Risers and ceiling voids
Voids hide a lot of unsealed openings. We work through the areas on your schedule methodically, and note anything we find that isn’t on it.
Cables and cable bundles
Single cables and small bundles are often within a fire-rated sealant’s tested detail. Bundle size, cable type and the space between cables all matter.
Maintenance after handover
For the best life from the joints:
- Leave fire sealant to cure fully before covering it
- Foam or ordinary sealant is never a fire-seal repair
- Agree the fire-stopping specification before services go in
- Look above ceilings when tiles are lifted for other jobs
During planned inspections, look at seals in risers, cupboards and voids. Look for cracks, unsealed new cables and gaps that have been enlarged.
Looking at service areas on a regular cycle pays off. Catching a damaged seal early keeps the fix small; found late, it can be one of many.
What affects the price in Durley Street
The price varies from site to site. It mainly depends on:
- Which sealant the job calls for
- Working within restricted access windows
- How accessible the joints are
- Induction, permit and paperwork requirements
Whether it’s a single area or a whole estate, the same things set the price: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote, and you’ll have a fixed figure to work with.
What to include in your enquiry
Good information means a firmer quote. Helpful details to send:
- The asbestos register, for older buildings
- Any dates the work must fit around
- Whether the building will be occupied during the work
- Rough lengths or quantities, or drawings if you have them
Send us photographs, drawings or a joint schedule are often enough for a fixed quote. Where a site visit makes more sense, we’ll arrange one.
Durley Street: questions and answers
How does the move away from BS 476 affect penetration seals in Durley Street?
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.
Do you take on work at healthcare sites like Moorgreen Hospital?
Yes, healthcare and care buildings are part of our work. Before anything starts, the estates team agrees permits, inductions and infection-control measures with us.
What’s the quickest route to a quote?
It works in four steps: send details, get a quote, we seal, guaranteed. Step one needs little more than photos and a postcode.
Is colour matching possible?
That depends on the product. Some ranges offer many colours, others very few, so we’ll confirm the colours available for the specified product with the quote.
Do you seal on top of existing sealant?
No. Sealing over old material is one of the classic causes of early joint failure, so everything comes out first.
How long before the joints can be used?
We’ll confirm how long the chosen product needs to cure, and sign any area that should be left alone.
Do you take on small jobs?
We quote for single jobs as well as large packages and programmes. Photos and a description are enough to start.
Compartments and services around Durley Street
Durley Street lies roughly 62 miles out from central London. Tenant changes on commuter-belt business parks mean regular fit-outs, and new services through compartment walls; the gaps need the specified seal. Fire stopping of openings and penetrations in England falls under Approved Document B. 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. Either way, we install the specified product to its tested detail.
Schools such as Wyvern Technology College often have new data and services installed during holidays, and penetrations through fire-resisting walls should be checked afterwards. Industrial units on estates such as Deer Park Farm Industrial Estate (1.6 miles west of Durley Street) often separate offices from warehouse space with fire-resisting walls, and new services through them need the specified seal. On a hospital site such as Moorgreen Hospital, 3.9 miles south-west of Durley Street, fire-rated sealant goes in where the specification calls for it, with the work planned around the estates team’s permits.
Durley Street is about 4 miles north-east of Hedge End, in Hampshire. Any commercial site in Durley Street is covered, for single jobs and planned programmes alike. Durley Street is one of 723 places we cover in Hampshire for service penetrations. There’s a separate page for Southampton, about 7 miles away.
We take on service penetrations across the SO32 postcode area, whatever the building. Buildings on Scivier's Lane and Manor Road are within our area for service penetrations. Sites close to Durley Street are covered too, including Wintershill (1 mile north-west), Lower Upham (1 mile north), Durley (1 mile south-west), Ashton (1 mile north-east) and Bishop's Waltham (2 miles east). Nearby towns on our patch include Winchester (8 miles north-west), Gosport (11 miles south), Havant (13 miles south-east), Eastleigh (4 miles west), Fareham (8 miles south) and Horndean (11 miles east).
Around Durley Street
Durley Street’s nearest station is Hedge End station, roughly 2.8 miles south-west. Nearby you will also find Moorgreen Hospital (3.9 miles south-west) and Bishop's Waltham Museum (1.4 miles east). The countryside around Durley Street includes Bishops Waltham Branch LNR.
Diagnose, treat, sign off
In a busy building, we agree a sequence with your contact so the disruption stays in one area at once. Each area is protected, prepared and sealed, then handed back before the next one starts. Rural sites near Durley Street may need directions, gate codes or a contact on site. Send that with the details and we will confirm the plan with the quote.
- The specification and schedule come first, so we know which details apply.
- We plan the sequence of floors, risers and voids with you.
- 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.
What we need from you
- Point out parking and an unloading spot
- Share the asbestos register for older buildings
- Make sure the joints can be reached
Request a quote
Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we’ll return a fixed quote that you can work with. For a chat about it beforehand, ring 01277 525 020 or send photos by email.