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

Fire stopping in Liss Forest

Work needed on a service penetration in Liss Forest? We assess it, carry out the work and guarantee our workmanship for 12 months.

  • Openings found when ceilings come down for a refit
  • Fire-rated sealant that has cracked or shrunk back
  • Seals that don’t match their tested detail
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
The right sealant, to the right depth, neatly finished.
4
Guaranteed
12-month guarantee on our workmanship.
South East, London & Scotland
CHAS & Constructionline
£5m public liability

Fire stopping for businesses in Liss Forest

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

What we can’t put right

Being straight saves everyone time. New sealant won’t cure:

  • Walls or floors that aren’t fire-resisting to begin with
  • Signing off or certifying a building’s fire stopping
  • Reviewing a building’s overall fire safety

If in doubt, ring 01277 525 020 or email us and we’ll say what we think.

Surfaces we seal

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

Fire stopping for commercial buildings in Liss Forest

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. With no specification in place, the first step sits with your designer or fire engineer, not with us. If you have non-fire-rated filler around services and openings left by services added after handover, we can put it right, on small duct penetrations where the tested detail allows, joints between fire-resisting walls and floors and pipe penetrations alike. Looking for mastic applicators who cover Liss Forest? Mastic Doctor has worked for contractors, FMs and building owners since 2005, CHAS accredited and a Constructionline member.

Rural conversions around Liss Forest can put new fire-resisting partitions inside older structures. Where a pipe or cable passes through a fire-resisting wall, the seal must match the tested detail: product, substrate, gap and depth.

We stand by our work with a 12-month guarantee. It covers how we prepared and applied the sealant.

Place
Liss Forest (GU33)
Wider area
Hampshire
Cover
12 months on every job
Price
Fixed quote, scope in writing
Telephone
01277 525 020
Updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Building owners, agents and FMs in Liss Forest

Housing associations and managing agents often need work done across blocks and communal areas. Work can be phased so residents and staff keep access throughout, and each stage is agreed with your contact.

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.

Aftercare for building managers

After handover, a little attention goes a long way:

  • Check risers and ceiling voids after each round of works
  • Settle who seals which penetrations at the start of a project
  • Make fire stopping part of every scope that crosses a fire-resisting wall
  • Ask which product is in place before decorating

New services after handover are a common way fire stopping gets breached. Building it into each contractor’s sign-off keeps the walls intact.

Keep a register of where seals are and what they are made of. When a new service goes through, everyone knows which product and detail to match, and it helps at inspections.

Questions we’re asked in Liss Forest

Will you take on work at estates like Ham Barn Business Park, close to Liss Forest?

Yes. Our area takes in Liss Forest and its surroundings, with estates and business parks such as Ham Barn Business Park included. To start, just call 01277 525 020 or email drawings and photos with the unit, the joints involved and your access times.

Can you seal around new services in a hotel near Liss Forest?

Yes, where fire-rated sealant is the specified product. It goes in to the manufacturer’s tested detail for the wall or floor and the services passing through, and we’ll tell you if the detail calls for a collar, wrap or batt instead.

Are your applicators CSCS-carded?

Yes. Should the site need card details in advance, tell us and we will confirm them with the quote.

Are you CHAS accredited and on Constructionline?

Yes. CHAS accredited, Constructionline member, and our applicators hold CSCS cards.

How do we ask for a quote?

It works in four steps: send details, get a quote, we seal, guaranteed. Step one needs little more than photos and a postcode.

What will the job cost?

It depends on the job: the volume of work, the access, the specified product and how it’s phased. Call for a fixed quote and we’ll price it properly.

Do you offer coloured sealant?

It depends on the product specified. Some ranges are wide, others limited, so the available colours are confirmed with the quote.

How a job runs

Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Any old material is cut back to clean, sound faces, primer goes on where the manufacturer specifies it, and the sealant is tooled off neatly. Smaller jobs around Liss Forest can be grouped with others nearby. You’ll have a fixed quote before work starts.

  1. We start with your penetration schedule, drawings or specification.
  2. Access, permits and the order of areas are agreed with the site team.
  3. Each opening is checked for wall or floor type, service, gap and depth.
  4. Unsuitable material is removed and the opening cleaned.
  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

  • Explain the parking and delivery arrangements
  • Share the asbestos register for older buildings
  • Tell us which areas need to stay in use

Ask for a quote

Every job follows the same four steps: send details, get a quote, we seal, guaranteed. The first step is to call the office on 01277 525 020 or send photos by email with what you know.

Get a quick quote

Advice

Common problems we fix in Liss Forest

Some service penetrations were never sealed at all. Inspections, refurbishments and ceiling access normally bring them to light.

Common reasons buildings call us in:

  • Seals that don’t match their tested detail
  • Expanding foam used as fire stopping
  • Head-of-wall gaps with no fire seal
  • Snag lists that include open service penetrations

Halls and meeting rooms at places like St Saviour's sometimes gain new services, and any compartment wall crossed needs the specified seal.

What to look for in a quote

  • Will CSCS-carded applicators be on site?
  • The named product and why it was chosen
  • Can the work be phased to keep areas open?
  • Their pre-qualification and accreditations

Choosing a commercial sealant contractor

General trades versus a specialist

What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.

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.

Where services cross fire walls in Liss Forest

A 2-mile radius around Liss Forest takes in a number of hotels. Hotels are divided into compartments, and refurbishments that add pipes and cables through bedroom and corridor walls leave gaps to close. In England, Approved Document B covers fire stopping of 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. Either way, we install the specified product to its tested detail.

Large healthcare estates like Chase Community Hospital, 3.8 miles north of Liss Forest, change their services often, so penetration seals are worth checking after M&E work. For a school such as Liss Infant School, penetration sealing fits best at the end of the summer works.

Liss Forest is about 4 miles north-east of Petersfield, in Hampshire. Businesses, contractors and managing agents in Liss Forest can call on us for service penetrations. Our Hampshire coverage takes in 723 places. Sites around Portsmouth have their own page, roughly 19 miles from Liss Forest.

If you need fire stopping in GU33, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. Among the streets we cover are Forest Road, Warren Road and Newfield Road, and sites on any of them can send details for a fixed quote. We also cover The Mint (1 mile south-east), Liss (1 mile south), West Liss (1 mile south), Greatham (1 mile north) and Rake (1 mile south-east). Nearby towns on our patch include Havant (14 miles south), Fleet (15 miles north), Horndean (11 miles south-west), Aldershot (14 miles north), Alton (8 miles north-west) and Waterlooville (13 miles south-west).

Landmarks near Liss Forest

We work on buildings around The Temple Inn and the streets around them. The closest station to Liss Forest is Liss station, roughly 0.7 miles south-west of the centre. A little further out are Chase Community Hospital (3.8 miles north) and The Romany Museum (3.7 miles north-west). Open spaces near Liss Forest include Liss Riverside Railway Walk North and Wheatham Hill.

Map of Liss Forest © OpenStreetMap contributors
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