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

Fire-rated sealing and fire stopping in Newtown, Reading

Fire stopping for Newtown, from a contractor working since 2005. Fully insured and CHAS accredited.

  • Damaged fire seals in risers and voids
  • Improvised or mixed-product fire seals
  • Hidden openings found during inspections
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
CHAS & Constructionline
£5m public liability

Fire stopping in Newtown

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

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 typically takes a single visit for a short list of penetrations, or a phased programme for a whole building. For a job in Newtown, the main thing is a clear picture of the work. A fixed quote follows.

  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. Anything that doesn’t belong in the opening, such as expanding foam or general-purpose filler, is removed.
  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.

Preparing the site

  • Tell staff and tenants when we’ll be in
  • Send asbestos survey details if the building is pre-2000
  • Tell us what induction or permit system the site runs

Ask for a quote

Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. The easiest way is to speak to us on 01277 525 020 or send photos by email.

Get a quick quote

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How we handle fire stopping in Newtown

It helps to set out our role at the start. Deciding the specification sits with the designer, the fire engineer and building control. We fit the specified fire-rated sealant following that specification and the maker’s installation guidance. If you have open linear gaps along the top of fire-resisting walls and openings left by services added after handover, we can put it right, on small duct penetrations where the tested detail allows, linear gaps at wall heads and cable penetrations alike. Most enquiries from Newtown start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.

Fire-rated sealing in a place like Newtown is typically a single building at a time. With the specification and photographs of the gaps, we can give a fixed quote and bring the right products.

Building owners and contractors get the same cover: a 12-month guarantee on our workmanship. It doesn’t extend to damage, faults in the building or work by others, and we’re upfront about that.

The Mastic Doctor team standing beside their branded vans outside an office building
Where
Newtown (RG1, RG6, RG4)
Region
Reading
Cover
A 12-month guarantee
Quote
A fixed quote before we start
Phone
01277 525 020
Updated
3 November 2026

Compartments and services around Newtown

In England, Approved Document B covers fire stopping of openings and penetrations. The national BS 476 classes are due to drop out of it from 2 September 2029, leaving the European BS EN 13501-2 route, subject to transitional arrangements. We install whatever has been specified, to the product’s tested detail. Newtown has a good number of hotels close by, all within 2 miles. Hotels are divided into compartments, and refurbishments that add pipes and cables through bedroom and corridor walls leave gaps to close.

For a hotel such as Tower House Hotel, which lies south-east of Newtown, penetration seals are worth checking after any refit or services upgrade. For a site team at a college like Reading College, less than half a mile west of Newtown, fire-rated sealing is best scheduled after the summer works.

Newtown is about 1 mile east of Reading, in Reading. We cover Newtown, with the same fixed quotes and 12-month guarantee as everywhere else. We work across 17 places in Reading, large and small.

Anyone looking for fire stopping in RG1, RG6 and RG4 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Streets here include Orts Road, Eldon Road and Amity Road. If your building is just outside Newtown, we cover Lower Caversham (1 mile north-west), Reading (1 mile west), Earley (2 miles south-east), Caversham (2 miles north-west) and Play Hatch (2 miles north). A short drive away, we cover Norcot (3 miles west), Tilehurst (4 miles west), Tilehurst Within (4 miles west), Horncastle (3 miles west), Whitley Wood (3 miles south) and Southcote (3 miles west).

Near you in Newtown

In Newtown, that means premises near University of Reading library, Maiden Erlegh School and Eldon Square and the streets around them. Also close by are The Fisherman's Cottage pub (under half a mile west) and Bulmershe College (less than half a mile west). The closest station to Newtown is Reading station, about 1.1 miles west. Well-known places in the area include The Oracle (1.1 miles west) and Royal Berkshire Hospital (0.6 miles south-west). Green spaces nearby include Fobney Island Wetland Reserve and Sonning Hill.

Map of Newtown © OpenStreetMap contributors

General trades versus a specialist

Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.

Redoing a failed joint usually costs more than getting it right at the outset, because the whole bead must be removed and the faces cleaned back again. That’s why many clients bring in a specialist from the beginning.

When it isn’t the sealant

Before quoting, we check that sealant is the right answer. It won’t put right:

  • Fire doors, dampers or other fire safety equipment
  • Plastic pipes whose detail calls for a collar or wrap
  • Designing or specifying fire stopping, which sits with the designer or fire engineer

If in doubt, ring 01277 525 020 or email us and we will say what we think before you book.

Joints and surfaces we work on

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

After the work

Problems stay small when the joints are checked regularly. In particular:

  • Report damaged or disturbed seals as soon as they’re spotted
  • Look above ceilings when tiles are lifted for other jobs
  • Arrange inspection before areas are covered up
  • Check with the data sheet before painting over fire sealant

Add risers, plant rooms and ceiling voids to routine fire-stopping checks. Watch for cracked sealant, new services with no seal and openings that have grown.

Keep a register of where seals are and what they are made of. It tells the next contractor exactly what to reinstate, which saves guesswork.

Different surfaces, different methods

Small ducts

We seal around ducts only within what the tested detail covers. The ductwork, its supports and any dampers are for the ductwork contractor.

Plastic pipes

In a fire, plastic pipework melts away and leaves an opening. 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.

Questions we’re asked in Newtown

Is a smaller place like Newtown outside your area?

Not at all: smaller places are covered as well as towns. We work across Greater London and the South East. We plan jobs in smaller places so return trips are kept to a minimum.

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

Yes, hospitals are one of the sectors we cover. The estates team’s permit system and infection-control rules come first, and the work is planned around them.

What do you charge?

Every job gets its own fixed quote. To get one, give us a call on 01277 525 020 or use the quote form with a description of the work.

How do you deal with asbestos in old sealant?

The duty to manage asbestos sits with the building’s dutyholder, so we will ask for the register before work on an older building. Work pauses if suspect material is found, until it has been tested.

Can you work to our specification?

Yes. Include it with the drawings when you ask for a quote, and we will price the work to it, flagging anything that needs clarifying.

Can the sealant be colour-matched?

Often, yes. Many products come in a range of standard colours, and matching to RAL references or surrounding finishes is often possible. We confirm what’s available for the specified product when we quote.

Can you reseal penetrations after our M&E works?

Yes, provided a specification covers them. Openings left by new services are among the most common jobs we see and we close them with the specified product.

Signs you need fire stopping in Newtown

Linear gaps fail where a fire-resisting wall meets a slab, soffit or another wall. Deflection and building movement can open these gaps, and the wrong product can split as a result. The tested detail for a linear joint states the width and movement it covers.

Look out for the following:

  • Service penetrations left open after M&E works
  • Open linear gaps along the top of fire-resisting walls
  • Hidden openings found during inspections
  • Fire-rated sealant that has cracked or shrunk back

On a site such as Suttons Business Park, which lies north-east of Newtown, every fit-out that runs new services through a compartment wall leaves penetrations to seal with the specified product.

Questions to ask before you book

  • How the existing material will be dealt with
  • Will RAMS and insurance details be available?
  • Their approach to joint depth and backing
  • Which product they’ll use, and why it suits the joint

Our contractor checklist

Accreditations

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