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

Fire-rated sealing and fire stopping in Strood, Medway

Fire stopping in Strood, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.

  • Seals that don’t match their tested detail
  • Hidden openings found during inspections
  • Snag lists that include open service penetrations
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
Scope agreed and priced before anything starts.
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
CHAS accredited
Fully insured: £5m PL

Fire stopping across Strood

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

How the job changes by surface

Linear joints

Head-of-wall joints often have to absorb slab deflection. The specified product and backing for that movement are what goes in.

Cables and cable bundles

Data cabling added after handover is a regular cause of open service penetrations. We reseal around them to the specified detail, and we tell you if the bundle exceeds what sealant covers.

How we handle fire stopping in Strood

Opened ceilings and riser doors often reveal service openings nobody sealed. Where the walls and floors already have a fire-stopping specification, we can work to it, matching the product and detail it names. With no specification in place, the first step sits with your designer or fire engineer, not with us. Site teams most often ask us about builders’ foam or ordinary silicone in compartment walls and open linear gaps along the top of fire-resisting walls, across cable penetrations, pipe penetrations and joints between fire-resisting walls and floors. A single leaking joint is often how a building in Strood first comes to us: we look at the rest while we’re there and tell you what we find.

In a town like Strood, penetration seals typically need attention after other trades have been through. A check after services work is sensible; tell us what the specification says and we will install to it.

Work we carry out comes with a 12-month guarantee. Should something we installed fail, phone 01277 525 020 or email the details over and we will come back to it.

Location
Strood (ME2, ME1, ME3)
Wider area
Medway
Guarantee
A 12-month guarantee
Price
Fixed quote, scope in writing
Phone
01277 525 020
Last updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

From enquiry to sign-off

Occupied buildings need a little choreography. We sign and contain the area we’re in, keep walkways clear and work section by section so the rest of the building stays in use. Town-centre premises in Strood may have limited parking, so tell us what’s nearby. Industrial and business units normally have yard or car park space.

  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. Anything outside the detail is reported to you rather than sealed.

Before we start on site

  • Make sure the joints can be reached
  • Let building users know which areas are affected
  • Share your working hours and any access restrictions

Getting a fixed quote

Let us know the site, the scope and your timescale, and we’ll put a fixed quote together. To get it moving, ring 01277 525 020 or send details through our quote form.

Ask for a quote

Read more

Doing it in-house

Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.

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.

What we are called out for in Strood

Fire stopping can get squeezed at the end of a programme, or done by whoever is on site. That is how unsuitable products and improvised details end up in compartment walls and later need putting right.

Clients normally get in touch after noticing one or more of the following:

  • Seals disturbed by maintenance and left open
  • Openings found when ceilings come down for a refit
  • Open linear gaps along the top of fire-resisting walls
  • Penetration schedules that need working through

At a university such as University for the Creative Arts - Rochester, 1.8 miles south-east of Strood, labs, lecture blocks and residences are re-serviced often, so penetration seals are best checked after M&E work.

Before you book anyone

  • Will CSCS-carded applicators be on site?
  • What level of public liability insurance do they hold?
  • Are they CHAS accredited or on Constructionline?
  • Whether primer will be used where the manufacturer specifies it

Our contractor checklist

What affects the price in Strood

Your fixed quote is built from the real scope. It takes account of:

  • How much existing material needs removing
  • Specialist products, such as fire-rated or hygienic sealants
  • Working within restricted access windows
  • The site’s rules and procedures

The work involved drives the cost: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a quote.

What to include in your enquiry

For an accurate fixed quote, we need a clear picture of the site. Useful things to include:

  • What the building is and how it’s used
  • The asbestos register, for older buildings
  • Rough lengths or quantities, or drawings if you have them
  • Any specification or named product

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, call 01277 525 020 or email drawings and photos.

Penetration seals near Strood

At about 26 miles from central London, Strood is within reach of the capital. Business park offices in the commuter belt are refitted as tenants change, and each fit-out adds services through compartment walls. Plenty of hotels sit less than 2 miles from Strood. In hotels, bedroom and corridor walls are usually fire-resisting, so services added in a refit need sealing with the specified product.

Tenant changes at parks like Gun Lane Business Centre (0.7 miles north-east of Strood) bring new data and services, and openings through fire-resisting walls need the specified seal. Theatres, wards and plant rooms at sites like Medway Maritime Hospital (2.9 miles east of Strood) all have compartment walls crossed by services.

Strood is about 3 miles north-west of Chatham, in Medway. Our applicators travel to Strood for work on service penetrations. Across Medway, 54 places are covered, including Strood. There’s a separate page for London, about 26 miles away.

Work on service penetrations is covered throughout ME2, ME1 and ME3, whatever the building. Among the streets we cover are Ash Road, Gun Lane and Pine Road. With the A2 and A226 nearby, Strood is easy to get to with materials and equipment. Sites close to Strood are covered too, including Rochester (1 mile east), Borstal (1 mile south), Cuxton (2 miles south-west), Lower Bush (2 miles south-west) and Upper Bush (2 miles south-west). A short drive away, we cover Gillingham (4 miles east), Chatham (3 miles south-east), Rainham (6 miles east), Luton (3 miles south-east), Park Wood (6 miles south-east) and Lordswood (5 miles south-east). As one of the bigger centres in Medway, Strood has a broad mix of commercial, public and industrial buildings.

Local landmarks in Strood

Locally, jobs take us to sites close to Rede Common, Temple School and Strood Academy and the streets around them. For rail, the closest station is Strood station, roughly 1 mile east of the centre. A little further out are Rochester Castle (1 mile east) and Six Poor Travellers House (1.2 miles east). For a walk, there’s Rede Common and Gad's Hill.

Map of Strood © OpenStreetMap contributors

Work for main contractors and building owners

Blocks and communal areas make up much of the work for housing associations and agents. Work can be phased so residents and staff keep access throughout, and each stage is agreed with your contact.

Hospitality, education, healthcare, office and retail clients come to us directly as well. We plan around the way the building is used, so guests, pupils, patients or staff are disturbed as little as possible.

Questions we are asked in Strood

Is Gun Lane Business Centre, near Strood, within your area?

Yes. We cover Strood and the area around it, including industrial estates, business parks and retail parks such as Gun Lane Business Centre. Photos and a short description are enough for a first look.

Do you seal service penetrations in hotels around Strood?

Yes. We install fire-rated and intumescent sealant where it is specified. Work is done room by room so the hotel keeps trading; design and sign-off stay with the designer and building control.

Are you CHAS accredited and on Constructionline?

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

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

No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.

How soon can the area be used again?

We will confirm how long the chosen product needs to cure, and flag anything to keep off until it has cured.

How long will the new sealant last?

There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Treat them as maintenance items and inspect them regularly.

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. If anything suspect turns up, we stop until it’s tested.

Accreditations

Trusted. Accredited. Insured.