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

Fire stopping in Nashes Green

Planning work on a service penetration in Nashes Green? We look at it, seal it with the right product and hand it over with a 12-month guarantee.

  • Service penetrations left open after M&E works
  • Fire stopping installed outside its tested range
  • Expanding foam used as fire stopping
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
Signed off, with 12 months’ guarantee.
London, the South East & Scotland
Constructionline member
£5m public liability

Need fire stopping in Nashes Green?

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

Compartment walls and floors in Nashes Green

For England, the fire stopping of penetrations is dealt with in Approved Document B. Its BS 476 references are being withdrawn from 2 September 2029, with BS EN 13501-2 classification taking over, subject to transitional arrangements. Either way, we install the specified product to its tested detail. Nashes Green is about 46 miles from central London. Tenant changes on commuter-belt business parks mean regular fit-outs, and new services through compartment walls.

Halls and meeting rooms at places like Church of St. Mary sometimes gain new services, and any compartment wall crossed needs the specified seal. On a hospital site such as Alton Community Hospital, which lies south-east of Nashes Green, fire-rated sealant goes in where the specification calls for it, with the work planned around the estates team’s permits.

Nashes Green is about 5 miles north-west of Alton, in Hampshire. We cover commercial sites throughout Nashes Green. 723 places across Hampshire fall within our area, Nashes Green among them. Our Reading page has more on work in that area (17 miles or so).

Anyone looking for fire stopping in RG25 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. Nearby places we also cover include Ellisfield (2 miles west), Upton Grey (2 miles north-east), Upper Common (3 miles west), Cliddesden (3 miles north-west) and Viables (4 miles north-west). Bigger towns within reach include Basingstoke (5 miles north-west), Farnborough (13 miles north-east), Fleet (10 miles north-east), Aldershot (12 miles east), Alton (5 miles south-east) and Petersfield (14 miles south).

Near you in Nashes Green

The nearest railway station is Alton station, about 4.7 miles south-east of the centre. A little further out are Gliding Heritage Centre (1.4 miles south-east) and Basing House (4.6 miles north). The countryside around Nashes Green includes Holybourne Hill.

Map of Nashes Green © OpenStreetMap contributors

About our fire stopping in Nashes Green

We should be clear about what we do and don’t do. Deciding the specification sits with the designer, the fire engineer and building control; sign-off sits with them too. What we bring is careful installation of the specified sealant, to the maker’s guidance in Nashes Green and nearby. If you have old intumescent sealant that has split away and fire-stopping items raised at inspection or handover, we can help. A specialist sealant contractor works differently from a general builder: on jobs in Nashes Green, preparation and product choice get the time they need.

For a smaller site near Nashes Green, we plan to do all the penetrations in one go, with the specification and photographs sent in advance. Design and sign-off belong to the designer or building control; we install what’s specified.

Guaranteed is the last step of every job. Our workmanship is backed for 12 months, and the quote explains what it covers.

The Mastic Doctor team standing beside their branded vans outside an office building
Place
Nashes Green (RG25)
Wider area
Hampshire
Guarantee
12 months on every job
Quotes
Fixed quote, scope in writing
Call
01277 525 020
Last updated
3 November 2026

Commercial clients in Nashes Green

If you look after buildings for someone else, clear figures and clear communication matter. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative, plus a 12-month guarantee.

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

How the job changes by surface

Cables and cable bundles

Single cables and small bundles are often within a fire-rated sealant’s tested detail. The detail limits bundle size and the gaps between and around cables.

Linear joints

Joints at the top of partitions may need to move as the slab above deflects. The specified product and backing for that movement are what goes in.

Why act early in Nashes Green

Sealing behind the M&E trades area by area beats a sweep at the end. Openings are visible, access is open and nothing has to be taken down, and the right detail can be checked at the time. For buildings around smaller places like Nashes Green, 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. Renewing joints in good time avoids the problem.

Access often affects the price as much as the sealing: joints within easy reach take less time than ones that need access equipment. Tell us how the joints are reached and call for a quote.

Why us?

  • 12-month guarantee on workmanship
  • Fully insured
  • Work carried out by CSCS-carded applicators
  • Commercial sealant work since 2005

Read our cost guide and our accreditations.

Aftercare for building managers

For the best life from the joints:

  • Keep product data and details in the fire safety file
  • Put resealing into every M&E and fit-out package
  • Ask which product is in place before decorating
  • Check risers and ceiling voids after each round of works

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.

Looking at service areas on a regular cycle pays off. Catching a damaged seal early keeps the fix small compared with dozens found at once.

When to bring in a specialist

Redoing a failed joint normally costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.

A short, simple internal joint is often within reach of a maintenance team. The usual problems come from preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.

Nashes Green: questions and answers

Is Nashes Green too small for you to travel to?

No. Small places get the same service as large ones. London and every South East county are within our area. We plan jobs in smaller places so return trips are kept to a minimum.

How does the removal of BS 476 from Approved Document B affect fire-rated sealing in Nashes Green?

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. The designer or fire engineer sets the specification, and we install the product to the manufacturer’s tested detail.

What do you charge?

It depends on the job: quantities, access, the product and any phasing. Call for a fixed quote and we will price it properly.

How long do sealant joints last?

There isn’t a single answer, since movement, weather, cleaning and use all affect it. Regular checks let you plan resealing before leaks or damage.

How do I request 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 photographs and a postcode.

Do you work to architects’ specifications?

Yes. We follow the specification, along with the manufacturer’s installation guidance.

Do you take on small jobs?

Whatever the size, the process is the same: send details, get a fixed quote, we seal, guaranteed.

How a job runs

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. Then we strip out anything that has failed, prepare every joint and seal it. For a building around Nashes Green, tell us how to find it and who will meet us. Add it to your enquiry and we’ll build it into the plan.

  1. First we confirm the product and tested details named in the specification.
  2. We sort the openings by the detail each one needs.
  3. Improvised fillers and failed sealant are removed.
  4. Where the detail needs backing, it goes in at the stated depth.
  5. Fire-rated or intumescent sealant goes in around the services and is tooled off.
  6. Completed areas are checked with you, with the records agreed when we quoted.

What we need from you

  • Move anything stored against the joints
  • Share your working hours and any access restrictions
  • Point out any areas we must not close

Quotes

Photos, drawings or a schedule of the joints and a fixed quote comes back to you. Where a site visit makes more sense, we’ll arrange one.

Get a price

Read more

Accreditations

Trusted. Accredited. Insured.