The Mastic Doctor team standing beside their branded vans outside an office building
Hampshire · England

Fire Stopping in Penton Grafton

Need fire stopping in Penton Grafton? It’s simple: send details, get a quote, we seal, guaranteed.

  • Openings found when ceilings come down for a refit
  • Builders’ foam or ordinary silicone in compartment walls
  • Fire sealant pulled out of the opening
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
12-month guarantee on our workmanship.
Covering the South East & Scotland
Constructionline member
£5m PL insurance

Fire stopping for Penton Grafton sites

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

Questions about Penton Grafton

Can you work around term dates at a campus such as Andover College?

Yes, holiday working periods are the norm on campus jobs. Let us know which documents your site asks for, and we will confirm them alongside the quote.

What does the BS 476 change mean for fire-rated sealant in Penton Grafton?

From 2 September 2029, Approved Document B drops its BS 476 references in favour of BS EN 13501-2 classification, with transitional arrangements. Our part doesn’t change: the specified product, to its tested detail.

Are you CHAS accredited and on Constructionline?

Yes. We are CHAS accredited, we are a Constructionline member and we use CSCS-carded applicators.

What will the job cost?

Each job is quoted on its own details. To get one, ring 01277 525 020 or email drawings and photos with a description of the work.

Do you take on multi-site work?

Yes. A group of buildings can go on one quote, and you deal with one contact throughout.

How long before the joints can be used?

The product and site conditions decide that. Some products skin over quickly but need longer to cure fully, and we confirm it before leaving site.

Is it fine to apply new sealant on top of old?

No, never. Sealing over old material is one of the classic causes of early joint failure, so everything comes out first.

Fire stopping in Penton Grafton

Every service that crosses a compartment wall or floor leaves an opening, and that opening needs sealing to hold back fire and smoke. Our part is installing fire-rated and intumescent sealant at those openings and along linear gaps, where the specification calls for it. We work to the product’s tested detail for every seal rather than guesswork. If you’re dealing with fire-rated sealant that has cracked or shrunk back and service penetrations left open after M&E works, we can help. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Penton Grafton is the same: the right product in a properly prepared joint.

Rural conversions around Penton Grafton 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.

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
Penton Grafton (SP11)
Wider area
Hampshire
Guarantee
A 12-month guarantee
Quote
Quoted before any work starts
Telephone
01277 525 020
Updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Quoting for work in Penton Grafton

Quotes vary with the job. It mainly depends on:

  • How accessible the joints are
  • Working within restricted access windows
  • The size and state of each joint
  • Site requirements such as inductions and permits

Larger quantities, tricky access or phasing all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.

Sending details for a quote

A good diagnosis starts with the right details. Let us know:

  • The postcode of the building
  • The type of building and who uses it
  • When you need the work done
  • Drawings or a marked-up plan, if available

Specifications, drawings and tender packages are welcome with any enquiry, and we will price against exactly what is specified. Smaller jobs need nothing more than photos and a few notes.

From enquiry to sign-off

The first thing on site is a walk round with your contact, to confirm the scope, the order of work and any areas we must keep clear. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. If others near Penton Grafton need work, visits can be combined, which keeps travel down. You’ll have a fixed quote before work starts.

  1. First we go through the drawings, schedule or specification for the seals and ask about anything unclear.
  2. On site, each opening is checked against the tested detail it is meant to follow.
  3. Unsuitable fillers and loose debris are taken out of each opening.
  4. Mineral wool or other backing goes in wherever the detail asks.
  5. We apply the specified sealant to the depth and around the services as the detail shows.
  6. If an opening needs something other than sealant, we tell you instead of improvising.

Before we start on site

  • Share your working hours and any access restrictions
  • Let building users know which areas are affected
  • Clear stock, furniture or equipment away from the joints

Quotes

Send us photographs, drawings or a joint schedule are often enough for a fixed quote. If the job needs a look first, we will arrange a site visit.

Get a quick quote

Read more

Do you need fire stopping in Penton Grafton?

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.

Most enquiries start with something like this:

  • Open linear gaps along the top of fire-resisting walls
  • Unsealed openings around new pipes and cables
  • Snag lists that include open service penetrations
  • Fire-rated sealant that has cracked or shrunk back

For a building at a site such as Plot 2 Andover Business Park, 1 mile south of Penton Grafton, a check of penetration seals after each fit-out is good practice.

Before you book anyone

  • Is the sealant right for the movement and the substrate?
  • Will CSCS-carded applicators be on site?
  • How joint depth will be controlled
  • Whether primer will be used where the manufacturer specifies it

Our contractor checklist

When to bring in a specialist

For most general trades, sealant is a sideline. 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.

Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

Different surfaces, different methods

Drylining partitions

Drylined fire walls are tested in a particular build-up. We check that the product’s detail covers that partition type and board thickness.

Masonry and concrete

Core-drilled holes are neat; broken-out ones rarely are. The gap is measured at the widest point so we know it sits within the tested range.

Fire stopping around Penton Grafton: how the place shapes the job

Penton Grafton lies roughly 65 miles out from central London. Tenant changes on commuter-belt business parks mean regular fit-outs, and new services through compartment walls. For England, the fire stopping of penetrations is dealt with in 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. Our part stays the same: the specified product, installed to its tested detail.

In a retail centre such as Enham Arch Retail Park, 2.4 miles to the east of Penton Grafton, any fire-resisting wall between units that is crossed by new services needs sealing to the tested detail. At a college such as Andover College (2.3 miles south-east of Penton Grafton), checking penetration seals after summer M&E works is good practice.

Penton Grafton is about 2 miles north-west of Andover, in Hampshire. Commercial clients in Penton Grafton use us for work on service penetrations. 723 places across Hampshire fall within our area, Penton Grafton among them. For work in that direction, see our Southampton page (22 miles or so).

We cover the SP11 postcode districts. We also cover Penton Mewsey (1 mile north-east), Penton Corner (1 mile south), Foxcotte (1 mile east), Charlton (1 mile east) and Weyhill (1 mile south-west) for service penetrations. Bigger towns within reach include Winchester (15 miles south-east), Hyde (14 miles south-east), Tidworth (6 miles west), Weeke (14 miles south-east), Stanmore (15 miles south-east) and Ludgershall (4 miles north-west).

Local landmarks in Penton Grafton

Recent enquiries here include premises near White Hart Public House, among other places. Penton Grafton’s nearest station is Andover station, roughly 1.9 miles south-east. Well-known places in the area include Andover Museum (2.6 miles south-east) and Ludgershall Castle (4.6 miles north-west). Open spaces near Penton Grafton include Anton Lakes and Mill Lake.

Map of Penton Grafton © OpenStreetMap contributors

When it isn’t the sealant

Our job is the joint, not everything around it. On its own, sealant can’t deal with:

  • Signing off or certifying a building’s fire stopping
  • Walls or floors that aren’t fire-resisting to begin with
  • Designing or specifying fire stopping, which sits with the designer or fire engineer

If you are not sure, just phone 01277 525 020 or email drawings and photos and we will give you a straight answer before you book.

Joints and surfaces we work on

  • Pipe penetrations
  • Joints between fire-resisting walls and floors
  • Service gaps in risers
  • Small duct penetrations where the tested detail allows
  • Cable penetrations
  • Linear gaps at wall heads
Accreditations

Trusted. Accredited. Insured.