Fire-rated sealing and fire stopping in Michelmersh, Hampshire
Planning work on a service penetration in Michelmersh? We look at it, seal it with the right product and hand it over with a 12-month guarantee.
- Unsealed openings around new pipes and cables
- Hidden openings found during inspections
- Old intumescent sealant that has split away
Fire stopping across Michelmersh
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Fire stopping in Michelmersh
We should be clear about what we do and don’t do. The designer, fire engineer or building control decides which fire stopping is required. We fit the specified fire-rated sealant following that specification and the maker’s installation guidance. We work on cable penetrations, linear gaps at wall heads and joints between fire-resisting walls and floors, and the failures we’re asked to look at most are openings found when ceilings come down for a refit and unsealed openings around new pipes and cables. Searching for sealant specialists in Michelmersh? We have been sealing commercial buildings since 2005, CHAS accredited and a Constructionline member.
For a smaller site near Michelmersh, we plan to do all the penetrations in one go, with the specification and photos sent in advance. Design and sign-off belong to the designer or building control; we install what’s specified.
Our 12-month guarantee is about workmanship, not wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we spell out the cover before we begin.
- Location
- Michelmersh (SO51)
- Region
- Hampshire
- Guarantee
- A 12-month guarantee
- Price
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
When something else is needed
We seal joints; we don’t mend everything behind them. Sealant alone won’t deal with:
- Approving the work on behalf of building control
- Openings that need collars, wraps, batts or boards rather than sealant
- Deciding what a wall or floor needs, which belongs to the designer
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
- Linear gaps at wall heads
- Service gaps in risers
- Pipe penetrations
- Joints between fire-resisting walls and floors
- Small duct penetrations where the tested detail allows
- Cable penetrations
Service penetrations in Michelmersh buildings
Michelmersh is about 69 miles from central London. Offices around the capital are refitted often, and the cabling that follows can breach fire-resisting walls. Approved Document B is the English guidance that covers fire stopping around openings and penetrations. Its BS 476 references are being withdrawn from 2 September 2029, with BS EN 13501-2 classification taking over, subject to transitional arrangements. Our part stays the same: the specified product, installed to its tested detail.
Large healthcare estates like Romsey Community Hospital (to the south-east of Michelmersh) change their services often, so penetration seals are worth checking after M&E work. Where a unit on an estate such as Yokesford Hill Industrial Estate, which lies south-east of Michelmersh, has fire-resisting walls between offices and warehouse, any new service through them should be sealed to the tested detail. Halls and meeting rooms at places like Church of St Mary sometimes gain new services, and any compartment wall crossed needs the specified seal.
Michelmersh is about 3 miles north-west of Romsey, in Hampshire. Anywhere in SO51, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. Michelmersh is one of 723 places we cover in Hampshire. Sites around Southampton have their own page, about 9 miles away.
Commercial sites across SO51 are covered. We cover commercial and managed buildings on Yew Tree Lane, Staff Road and Haccups Lane and the roads nearby. If your building is just outside Michelmersh, we cover Timsbury (1 mile south), Stonymarsh (1 mile north-west), Kimbridge (1 mile west), Mottisfont (1 mile west) and Dunbridge (1 mile west). Further afield, our area takes in Winchester (9 miles east), Eastleigh (9 miles south-east), Andover (12 miles north), Totton (8 miles south), Chandler's Ford (6 miles south-east) and Hedge End (12 miles south-east).
Local landmarks in Michelmersh
In Michelmersh, that means premises near The Malthouse Inn and the streets around them. Michelmersh’s nearest station is Mottisfont & Dunbridge station, roughly 1.5 miles west of the centre. Well-known places in the area include King Johns House (3 miles south) and Romsey Community Hospital (3.1 miles south-east). For a walk, there’s Emer Bog and Baddesley Common.
Also near Michelmersh
More services for Michelmersh
Common questions from Michelmersh clients
How does the removal of BS 476 from Approved Document B affect fire-rated sealing in Michelmersh?
Approved Document B loses its BS 476 references from 2 September 2029, and BS EN 13501-2 becomes 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.
Do you take on work at healthcare sites like Romsey Community Hospital?
Yes, healthcare and care buildings are part of our work. We follow the site’s permits, sign-in and infection-control procedures in every area.
Can one quote cover more than one building?
Yes. Multi-site work and planned programmes are a core part of the service, with each site phased to suit its occupants.
Do you have public liability insurance?
Yes. We are fully insured, and the certificate can go with your quote.
What if there’s asbestos in the old mastic?
Some older mastics, especially in pre-2000 buildings, can contain asbestos. Before we disturb old sealant in an older building, we ask to see the asbestos register or survey, and if asbestos is suspected, work stops until it’s tested. Removing asbestos is a job for asbestos specialists, not us.
When is resealing likely to be due?
It depends on movement, UV and weather, cleaning, traffic and the product. Treat them as maintenance items and inspect them regularly.
When can the area be used after sealing?
The product and site conditions decide that. Some take light use quickly, others need longer to cure, so we will confirm the curing time on the day.
Why deal with it now?
The longer openings stay, the more there tend to be: each new service adds to the list. A schedule that is dealt with regularly stays manageable. Older rural buildings around Michelmersh move with the seasons, and rigid or tired sealant can’t keep up. A sealant with the right movement capability, correctly sized, lasts far better.
Small jobs and large programmes are priced from the same things: scope, access, product and programme. Call for a quote, and you will have a fixed figure to work with.
Why choose Mastic Doctor in Michelmersh
- A Constructionline member, so easy to vet
- CSCS-carded applicators
- Work to your specification and the manufacturer’s guidance
- Health and safety: CHAS accredited
See our cost guide and our accreditations.
Doing it in-house
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, which is what makes a joint last.
The visible bead is only part of the job. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.
Diagnose, treat, sign off
We follow your site rules from the start: sign-in, induction and whatever permit system the building uses. With the paperwork done, we take the joints in the sequence agreed with you. Smaller jobs around Michelmersh can be grouped with others nearby, which keeps travel down. You’ll have a fixed quote before work starts.
- First we confirm the product and tested details named in the specification.
- We sort the openings by the detail each one needs.
- Improvised fillers and failed sealant are removed.
- Mineral wool or other backing is fitted where required.
- Fire-rated or intumescent sealant goes in around the services and is tooled off.
- Completed areas are checked with you, with the records agreed when we quoted.
What we need from you
- Flag any permit to work we will need
- Arrange parking or a loading space
- Tell us which areas need to stay in use
Get a fixed quote
Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, call the office on 01277 525 020 or send photos by email.
Advice
Different surfaces, different methods
Small ducts
Some fire-rated sealant details cover small ducts. Larger or fire-rated ductwork usually needs a different solution set by the designer and we flag that rather than guess.
Metal pipes
Metal pipes conduct heat, so their details often call for extra measures along the pipe, and some details add wrapping or a set length of insulation. If the detail needs something beyond sealant, we tell you.
Building owners, agents and FMs in Michelmersh
CHAS accredited and a Constructionline member, we are straightforward to vet for your supplier list. Our insurance certificate can be sent along with the quote.
We work for building owners and managing agents on everything from one building to a spread of sites. One quote can cover more than one site, so there’s one set of paperwork to deal with.