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

Fire-rated sealing and fire stopping in Penwood, Hampshire

Fire-rated and intumescent sealing of service penetrations and linear gaps across Penwood, by CSCS-carded applicators. Fully insured and CHAS accredited.

  • Service penetrations left open after M&E works
  • Fire sealant pulled out of the opening
  • Non-fire-rated filler around services
1
Send details
Send the specification, photos or a marked-up plan.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
Prepared joints, the specified product, a tidy finish.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
Constructionline member
£5m PL insurance

Fire stopping in Penwood

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

Fire stopping for commercial buildings in Penwood

The test standards are BS EN 1366-3 for penetration seals and BS EN 1366-4 for linear joints and the results are classified to BS EN 13501-2. A rating such as EI 60 only holds when the product is installed as it was tested. Reproducing the tested arrangement on site is the part we take care of. Site teams most often ask us about unsealed openings around new pipes and cables and fire-rated sealant that has cracked or shrunk back, on linear gaps at wall heads, service gaps in risers and joints between fire-resisting walls and floors. Whoever orders the work in Penwood, the brief is usually the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.

A job near Penwood is normally planned around one visit, so send the specification and photographs first. Design and sign-off belong to the designer or building control; we install what’s specified.

Every job we finish is backed by a 12-month workmanship guarantee, in Penwood as everywhere else we work. If a joint we sealed fails because of how it was installed, we come back and put it right.

Where
Penwood (RG20)
Region
Hampshire
Guarantee
A 12-month guarantee
Price
Quoted before any work starts
Telephone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team standing beside their branded vans outside an office building

Maintenance after handover

Every sealant joint needs some looking after, and their life depends on movement, exposure, cleaning and use. We suggest:

  • Arrange inspection before areas are covered up
  • Ask which product is in place before decorating
  • Brief every trade that openings they make must be sealed
  • Don’t let anyone top up a fire seal with the wrong product

After every round of M&E works, check that the openings created have been sealed. A short check at the end of each job saves a long hunt later.

On fit-outs, get the fire-stopping specification agreed before the services go in. Details can then be picked to suit the actual pipes, cables and ducts, and installation follows the programme.

What happens if it’s left?

An open or wrongly sealed service penetration lets fire and smoke reach the next compartment much sooner than the building was designed for. Putting it right is typically a modest job when the openings are accessible. Left until ceilings are closed or a tenant moves in, the same work costs more access and more disruption. For buildings around smaller places like Penwood, water damage can go unnoticed for longer, especially where a building isn’t used daily, so a failed joint can leak for a while before anyone sees it. Resealing early avoids that.

No two sites price the same: the joint sizes, the specified product, access and working hours each have a bearing. A fixed quote follows once we understand the job.

Why us?

  • 12-month guarantee on workmanship
  • Sealing commercial buildings since 2005
  • Our applicators hold CSCS cards
  • Constructionline member for supplier checks

See our cost guide or our accreditations.

Compartments and services around Penwood

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. Penwood is about 56 miles from central London. Office refits around the commuter belt bring new cabling through fire-resisting walls.

On a hospital site such as West Berkshire Community Hospital (4.9 miles north-east of Penwood), fire-rated sealant goes in where the specification calls for it, with the work planned around the estates team’s permits. Halls and meeting rooms at places like Church of St Michael Archangel sometimes gain new services, and any compartment wall crossed needs the specified seal.

Penwood is about 4 miles south-west of Newbury, in Hampshire. If you are looking for fire stopping in Penwood, we can help. We work across 723 places in Hampshire, large and small. There’s a separate page for Reading, roughly 18 miles from Penwood.

Anyone looking for fire stopping in RG20 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. If your site is on Penwood Heights, Woodlands and Foxs Lane or close by, we can quote for service penetrations. Close to Penwood, our area also takes in Woolton Hill (1 mile north-west), Highclere (1 mile south-west), Wash Water (1 mile north-east), Enborne Row (1 mile north) and Burghclere (2 miles east). Further afield, our area takes in Basingstoke (13 miles south-east), Andover (11 miles south-west), Tadley (10 miles east), Popley (13 miles east), Tidworth (15 miles south-west) and Kempshott (12 miles south-east).

Around Penwood

Recent enquiries here include premises near The Clere School and the streets around them. For rail, the closest station is Newbury station, roughly 3.7 miles north-east of the centre. A little further out are West Berkshire Community Hospital (4.9 miles north-east) and British Balloon Museum & Library Ltd (3.9 miles north-east). The countryside around Penwood includes Audrey's Meadow and Sidown Hill.

Map of Penwood © OpenStreetMap contributors

Cost factors for service penetrations

There’s no standard rate for sealant work, because every site is different. What we take into account:

  • Whether old sealant has to be cut out first
  • How accessible the joints are
  • Backing rod, priming and other preparation
  • Specialist products, such as fire-rated or hygienic sealants

Small jobs and large programmes are priced from the same things: 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. When you get in touch, include:

  • Anything awkward about access or site hours
  • What the building is and how it’s used
  • Approximate linear metres or a joint schedule
  • Specification clauses that apply

The quickest route to a quote is a few photos and the site postcode. Send them through the quote form, or ring 01277 525 020 or send photos by email to discuss it first.

What we are called out for in Penwood

Mixing products or improvising a detail breaks the link with the test evidence. Gaps beyond the tested size, shallow sealant, no backing where it was needed, or products from different systems mixed together are the usual culprits.

What tends to prompt an enquiry:

  • Openings found when ceilings come down for a refit
  • Unsealed openings around new pipes and cables
  • Expanding foam used as fire stopping
  • Seals that don’t match their tested detail

Colleges such as Newbury College (to the north-east of Penwood) add IT and services as courses change, and each new penetration through a fire-resisting wall needs sealing with the specified product.

Before you book anyone

  • Whether their applicators hold CSCS cards
  • Proof of insurance
  • Health and safety accreditation such as CHAS
  • How they’ll work around occupants

Questions to ask before you appoint anyone

Doing it in-house

Redoing a failed joint typically costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.

Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and our CSCS-carded applicators are used to working under those rules.

From enquiry to sign-off

A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. The work itself normally takes a single visit for a short list of penetrations, or a phased programme for a whole building, and our waste is bagged and taken away as we go. For work around Penwood, we aim to finish in one visit, so photos and measurements up front really help. That way the right products come on the day.

  1. The specification and schedule come first, so we know which details apply.
  2. We plan the sequence of floors, risers and voids with you.
  3. We compare every service penetration with its tested detail before sealing.
  4. Unsuitable material is removed and the opening cleaned so the seal starts clean.
  5. Backing and fire-rated sealant are installed to the detail and tooled.
  6. We tell you about openings that need a different product.

What we need from you

  • Have the specification and drawings to hand
  • Let building users know which areas are affected
  • Arrange parking or a loading space

Ask for a quote

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

Get a quick quote

Read more

Penwood: questions and answers

Will you plan work around the academic year at somewhere like Newbury College?

Yes. Education sites usually want the work in vacations or in phases during term, and we plan to suit. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.

How does the move away from BS 476 affect penetration seals in Penwood?

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.

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

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

What if there’s asbestos in the old mastic?

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

How do I request a quote?

You can use the quote form on this site; alternatively, give us a call on 01277 525 020 or email the details over. Include photos or drawings if you have them.

Does the weather affect the work?

Outside, yes. The joint has to be dry and within the product’s temperature range, so damp, frosty or very cold days can stop external work. Inside work is seldom held up.

Do you guarantee your work?

Yes. Workmanship is guaranteed for 12 months on every job.

Accreditations

Trusted. Accredited. Insured.