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

Fire-rated sealing and fire stopping in Fair Oak, Hampshire

Fire-rated and intumescent sealing of service penetrations and linear gaps throughout Fair Oak and nearby, by CSCS-carded applicators. Fully insured and CHAS accredited.

  • Unsealed penetrations discovered above suspended ceilings
  • Fire stopping installed outside its tested range
  • Unsealed openings around new pipes and cables
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
South East, London & Scotland
CHAS & Constructionline
£5m PL insurance

Fire stopping for Fair Oak sites

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

Honest limits

A proper diagnosis includes knowing what sealant can’t do. We will tell you if the real problem is one of these:

  • Gaps in walls that were never built as compartment walls
  • Deciding what a wall or floor needs, which belongs to the designer
  • Fire doors, dampers or other fire safety equipment

If you are not sure, just phone 01277 525 020 or use the quote form and we’ll give you a straight answer before you book.

Joints and surfaces we work on

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

Fire stopping in Fair Oak

We are commercial sealant applicators, CHAS accredited and a Constructionline member, with CSCS-carded applicators on site. We don’t hold a third-party fire-stopping installer certificate, and we won’t pretend otherwise. We install the specified fire-rated sealant to its tested detail, and our workmanship carries a 12-month guarantee. We work on linear gaps at wall heads, joints between fire-resisting walls and floors and small duct penetrations where the tested detail allows, and what we are called in for most is fire-stopping items raised at inspection or handover and old intumescent sealant that has split away. One point of contact handles commercial sealant work in Fair Oak from the first photos to the final walk-round, for single jobs and planned programmes alike.

Rural conversions around Fair Oak 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.

The 12-month guarantee is for workmanship rather than wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we spell out the cover before we begin.

The Mastic Doctor team beside their liveried vans in front of an office building
Place
Fair Oak (RG19)
Wider area
Hampshire
Cover
A 12-month guarantee
Quote
Quoted before any work starts
Phone
01277 525 020
Page updated
3 November 2026

Fair Oak: questions and answers

Can you take on a job at a hospital such as West Berkshire Community Hospital?

Yes. Healthcare sites are among the places we work. Each area is agreed with the ward or department and the estates team in advance.

What happens to BS 476 references for fire stopping in Fair Oak?

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. Whichever applies, we install the specified product to its tested detail; the specification is for the designer to set.

What’s the quickest route to a quote?

There are four steps: send details, receive a fixed quote, we carry out the work, and it’s guaranteed. Step one needs little more than photos and a postcode.

Do you cover Fair Oak?

Yes. Sites across Fair Oak are covered, with one number for every area we cover.

Will you just go over the old sealant?

No. We cut the old material out and clean the joint back before sealing, because fresh silicone will not bond with aged silicone.

How do you choose the sealant?

A specification, where there is one, decides it. Without one, the joint decides: its movement, its surfaces and what it has to cope with.

Can you follow the specification on our project?

Yes. Send it with your enquiry, and the quote will be based on it, flagging anything that needs clarifying.

How a job runs

When we get to site, we report to your site contact and complete whatever induction the building runs. Everything around the joints gets protected before anything is cut or cleaned, and the work normally takes a single visit for a short list of penetrations, or a phased programme for a whole building. Smaller jobs around Fair Oak can be grouped with others nearby. A fixed quote is given before anything starts.

  1. We start with your penetration schedule, drawings or specification.
  2. We plan the sequence of floors, risers and voids with you.
  3. Each opening is checked for wall or floor type, service, gap and depth.
  4. Unsuitable material is removed and the opening cleaned first.
  5. Backing and fire-rated sealant are installed to the detail and tooled.
  6. Anything outside the detail is reported to you rather than sealed.

Before we start on site

  • Move anything stored against the joints
  • Arrange parking or a loading space
  • Point out any areas we must not close

Getting a fixed quote

If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price the work to it. Smaller jobs need nothing more than photographs and a few notes.

Ask for a quote

Advice

Building owners, agents and FMs in Fair Oak

Planned maintenance programmes are welcome: working through a building or an estate in stages that fit your budget. Fair Oak can form part of a wider programme across Hampshire.

Agents, factors and owners’ representatives all follow the same route: send the details, accept a fixed quote, and we carry out and guarantee the work. We can agree access arrangements and keyholder contacts beforehand.

What happens if it’s left?

Sealing behind the M&E trades area by area beats a sweep at the end. While the area is still open, every opening is easy to see and reach. For buildings around smaller places like Fair Oak, water damage can go unnoticed for longer, especially where a building isn’t used daily, which gives a failed joint time to do damage. Renewing joints in good time avoids the problem.

Small jobs and large programmes are priced from the same things: scope, access, product and programme. Call for a quote and we’ll put a fixed figure on it.

Why appoint us

  • Joints cleaned back to sound surfaces
  • Health and safety: CHAS accredited
  • Work to your specification and the manufacturer’s guidance
  • Commercial sealant work since 2005

Read what affects the cost or how we’re accredited.

Fire-rated sealing for Fair Oak buildings

Fair Oak lies roughly 49 miles out from central London. Office refits around the commuter belt bring new cabling through fire-resisting walls; the gaps need the specified seal. For England, the fire stopping of penetrations is dealt with in Approved Document B. References to the older BS 476 classes are being removed from it from 2 September 2029, after which the European classification, BS EN 13501-2, is the route, subject to transitional arrangements. We install whatever has been specified, to the product’s tested detail.

Theatres, wards and plant rooms at sites like West Berkshire Community Hospital (5.5 miles north-west of Fair Oak) all have compartment walls crossed by services. For a school such as Ashford Hill Primary School, penetration sealing fits best at the end of the summer works.

Fair Oak is about 3 miles west of Tadley, in Hampshire. Fair Oak sits inside our coverage and the rest of Hampshire, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Fair Oak is one of 723 places in Hampshire on our list. For work in that direction, see our Reading page (12 miles or so).

If you need fire stopping in RG19, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. Close to Fair Oak, our area also takes in Ashford Hill (1 mile north), Plastow Green (1 mile west), Wolverton (1 mile south), Goose Hill (1 mile north-west) and Hyde End (2 miles north). Nearby towns on our patch include Basingstoke (7 miles south-east), Andover (15 miles south-west), Tadley (3 miles east), Hook (12 miles east), Popley (7 miles south-east) and Kempshott (8 miles south-east).

Local landmarks in Fair Oak

Around Fair Oak, our work takes us to commercial buildings near The Hurst School, among other places. The nearest railway station is Thatcham station, about 3.6 miles north-west of the centre. Other landmarks nearby include Old Chapel Textile Centre (3.6 miles north-west) and West Berkshire Community Hospital (5.5 miles north-west). The countryside around Fair Oak includes Thatcham Reed Beds.

Map of Fair Oak © OpenStreetMap contributors

Signs you need fire stopping in Fair Oak

Openings in fire-resisting walls typically appear when services are added or changed. 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:

  • Hidden openings found during inspections
  • Old intumescent sealant that has split away
  • Expanding foam used as fire stopping
  • Open linear gaps along the top of fire-resisting walls

Tenant changes at parks like Scion Business Park (1.5 miles north-east of Fair Oak) bring new data and services, and openings through fire-resisting walls need the specified seal.

What your quote should include

  • Proof of insurance
  • Whether their applicators hold CSCS cards
  • Health and safety accreditation such as CHAS
  • Their plan for phasing and protecting the area

Choosing a commercial sealant contractor

When to bring in a specialist

Certain joints really need a specialist: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong normally costs more in the end than doing them right.

There’s also the paperwork. Many sites expect CSCS cards, RAMS and proof of insurance, and our CSCS-carded applicators are used to working under those rules.

Accreditations

Trusted. Accredited. Insured.