Fire-rated sealing and fire stopping in South Harting, West Sussex
Fire stopping in South Harting, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.
- Unsealed joints where partitions meet the slab
- Fire sealant pulled out of the opening
- Unsealed openings around new pipes and cables
Need fire stopping in South Harting?
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Diagnose, treat, sign off
In a busy building, we agree a sequence with your contact so the disruption stays in one area at once. Each section is protected, cleaned back and sealed, then handed back before the next one starts. For work around South Harting, we aim to finish in one visit, so we ask for photographs and rough sizes first. Then the right materials arrive with us.
- We ask for the product and detail your designer has specified.
- Openings are measured and grouped by detail.
- 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
- Let building users know which areas are affected
- Have the specification and drawings to hand
- Send your site hours and access windows
Getting a fixed quote
For a fixed quote, call the office on 01277 525 020 or email the details over. Our quote form is another easy route.
Read more
About our fire stopping in South Harting
We are commercial sealant applicators, CHAS accredited and a Constructionline member, with CSCS-carded applicators on site. We hold no third-party fire-stopping installer certificate, and we won’t pretend otherwise. What we offer is careful installation of the specified sealant to its tested detail, with a 12-month guarantee on our workmanship. We work on linear gaps at wall heads, small duct penetrations where the tested detail allows and service gaps in risers, and the usual reasons a site gets in touch are unsealed joints where partitions meet the slab and improvised or mixed-product fire seals. Most enquiries from South Harting start with one failed joint and grow into a wider look at the building: we look at the rest while we’re there and tell you what we find.
A job near South Harting is typically planned around one visit, with the specification and photos sent in advance. We install to the specification and the manufacturer’s guidance, leaving design and sign-off with the designer and building control.
The 12-month guarantee covers our workmanship: preparation, application and finish. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.
- Where
- South Harting (GU31)
- Region
- West Sussex
- Guarantee
- A 12-month guarantee
- Quotes
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Updated
- 3 November 2026
Building owners, agents and FMs in South Harting
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, with each stage agreed with your site contact.
Building owners and managing agents use us on everything from one building to a spread of sites. One quote can cover more than one site, which keeps the paperwork simple.
Penetration seals near South Harting
At about 50 miles from central London, South Harting is within reach of the capital. 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. References to the older BS 476 classes are being removed from it from 2 September 2029, after which the European classification, BS EN 13501-2, is the route, subject to transitional arrangements. Either way, we install the specified product to its tested detail.
For a hospital such as Petersfield Community Hospital (3.6 miles north-west of South Harting), penetration sealing is typically phased ward by ward, with infection-control rules agreed first. Older community buildings such as The Parish Church of St Mary & St Gabriel that have been rewired or given new heating can have service gaps through walls worth checking against the specification.
South Harting is about 3 miles south-east of Petersfield, in West Sussex. South Harting sits inside our coverage, with the same fixed quotes and 12-month guarantee as everywhere else. South Harting is one of 373 places we cover in West Sussex. Our Portsmouth page has more on work in that area, about 14 miles away.
Anyone looking for fire stopping in GU31 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Streets here include The Square, Smithfield and Mill Lane. We also cover East Harting (1 mile east), Nyewood (2 miles north-east), Elsted (2 miles east), Compton (3 miles south) and Dumpford (3 miles north-east). Nearby towns on our patch include Bognor Regis (15 miles south-east), Chichester (10 miles south-east), Portfield (11 miles south-east), East Wittering (14 miles south), Nyetimber (15 miles south-east) and Midhurst (6 miles east).
Landmarks near South Harting
Locally, jobs take us to sites close to The Ship Inn and the streets around them. The nearest railway station is Petersfield station, about 3.7 miles north-west. Well-known places in the area include Petersfield Community Hospital (3.6 miles north-west) and Bear Museum (3.3 miles north-west). The countryside around South Harting includes Iping and Stedham Commons and Oakham Hill.
When to bring in a specialist
For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class.
Some joints are best left to specialists: 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.
Nearby places to South Harting
Also in South Harting
Signs you need fire stopping in South Harting
Damage plays a part too. Maintenance work can knock a seal, cut it back for an extra cable or remove it with an old pipe.
Clients normally get in touch after noticing something like this:
- Unsealed joints where partitions meet the slab
- Snag lists that include open service penetrations
- Service penetrations left open after M&E works
- Damaged fire seals in risers and voids
In a school such as Harting CofE Primary School, fire-rated sealant goes in around service penetrations where it is specified.
Comparing quotes
- The terms of the workmanship guarantee
- Health and safety accreditation such as CHAS
- Whether old or failed sealant will be cut out, not overlaid
- What level of public liability insurance do they hold?
Your questions answered
Is South Harting off your patch?
No. Places such as South Harting are covered as much as the big towns. We work across Greater London and the South East. Good photos up front let us bring everything on the first visit.
How does the move away from BS 476 affect penetration seals in South Harting?
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. Our part doesn’t change: the specified product, to its tested detail.
When can the area be used after sealing?
That comes down to the sealant and the temperature. Some take light use quickly, others need longer to cure, and we confirm it before leaving site.
What happens if old sealant might contain asbestos?
Some older mastics, especially in pre-2000 buildings, can contain asbestos. We check the asbestos register before cutting out old sealant in an older building, and if asbestos is suspected, work stops until it’s tested. Removing asbestos is a job for asbestos specialists, not us.
Do you offer coloured sealant?
In many cases, yes. Many products come in a range of standard colours, and matching to RAL references or surrounding finishes is often possible. We will confirm the colours available for the specified product.
Do you hold CHAS accreditation?
Yes. Mastic Doctor is CHAS accredited and a Constructionline member, which helps with supplier vetting.
What do you charge?
That depends on the job: quantities, access, the product and any phasing. Call for a quote.
What we can’t put right
A proper diagnosis includes knowing what sealant can’t do. You’ll hear from us if the cause turns out to be any of the following:
- Fire risk assessments, a job for a competent assessor
- Large openings beyond what any sealant detail covers
- Issuing fire ratings or certificates for seals
Not sure which it is? You can give us a call on 01277 525 020 or send photos by email and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Cable penetrations
- Joints between fire-resisting walls and floors
- Linear gaps at wall heads
- Service gaps in risers
- Pipe penetrations
- Small duct penetrations where the tested detail allows
Cost factors for service penetrations
Before we quote, we look at:
- Travel to remote or island sites
- How accessible the joints are
- The size and state of each joint
- The product specified
The product called for affects the cost, and so does the preparation, from cutting out to priming and backing rod. Access, phasing and site rules also count.
Before you send an enquiry
For an accurate fixed quote, we need a clear picture of the site. Send us:
- Drawings or a marked-up plan, if available
- What the building is and how it’s used
- Whether an asbestos survey exists
- The site address and postcode
If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price the work to it. Smaller jobs need nothing more than photographs and a few notes.