Greater London · England
Commercial sealant contractors in SE25
Commercial sealant, construction mastic and joint sealing across SE25, from Selhurst, South Norwood and Thornton Heath, with a fixed quote before we start.
Sealant work in SE25
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Towns and villages in SE25
- Selhurst
- South Norwood
- Thornton Heath
- Woodside
- Ashburton
- Addiscombe
- Monks Orchard
- Shirley Oaks
- Shirley
- Elmers End
What we do in SE25
- Coloured and colour-matched sealant
- Facade and window perimeter sealing
- Fire-rated sealing and fire stopping
- Commercial sealant contractors
- Construction and new-build mastic
- Commercial washroom and wet-area sealing
- Mastic sealing for building owners and managing agents
- Industrial and floor joint sealing
- Expansion and movement joint sealing
- All services
Let us know the job and your postcode and we’ll come back with a price: speak to us on 01277 525 020 or email a schedule or drawings.
Commercial sealant contractors across SE25: what to expect
On a commercial site, sealant turns up in more places than people expect: washroom fittings, kitchen worktops, window boards, partition heads and the line where floors meet walls. Outside, it closes facade joints, frame perimeters and movement joints against the weather. Our applicators work on both the inside and the outside of the building, picking the product for each location rather than one tube for everything. We work on window and door perimeters, washrooms and tea points and movement joints in walls and floors, and what we are called in for most is external beads that have gone brittle and cracked and layers of sealant, all of them failing.
We schedule the visit to fit the site hours and access windows you give us. While we are working, the area stays contained and tidy, and your contact hears from us before we move to the next area.
- First, details reach us through the quote form or a site visit.
- The cause is diagnosed and the scope priced as a fixed quote.
- Where parts of the building must stay open, the work is phased.
- Every failed bead is removed rather than covered.
- Each joint gets a suitable sealant, laid to depth and tooled.
- A final walk-round, then the 12-month guarantee applies.
What affects the price in SE25
No two sites price the same: joint size, product, access and site hours all play a part. A fixed quote follows once we understand the job.
Why choose Mastic Doctor
- One phone line for London, the South East and Scotland
- Products installed to the manufacturer’s instructions
- Sealing commercial buildings since 2005
- A fixed quote before work starts
Getting a fixed quote
A good quote starts with a clear picture: what’s there, how much of it, how we reach it and what’s specified. Share whatever details you have and we will fill any gaps with a visit.
Local landmarks in Selhurst
Around Selhurst, our work takes us to commercial buildings near The Albion pub, St Mark's Church of England Primary Academy and Church of St Mark, among other places. Nearby too are South Norwood Recreation Ground (under half a mile south-west) and Harris Academy South Norwood (under half a mile north-west). Selhurst has its own railway station: Norwood Junction station. A little further out are Croydon University Hospital (1.7 miles south-west) and Crystal Palace Museum (1.4 miles north). For a walk, there’s Duppas Hill and Dulwich Upper Wood.
Commercial sealant contractors across SE25: the area picture
Across SE25, from Thornton Heath, Selhurst and South Norwood to the smaller places between, commercial buildings run from high-street shops and offices to hotels, schools and business parks. We cover the whole area, so occupiers with several sites can use one contractor and one point of contact, with colours matched site to site where the brand needs it.
The South East is one of the UK’s drier regions, though outside work in SE25 still waits for dry faces, and cold mornings bring frost and condensation on steel and glass.
Selhurst: For premises near Norwood Junction station, under half a mile south of Selhurst, footfall is part of the plan: work is phased so shops and offices keep trading. Refits at hotels like The Crystal Lodge Hotel, 1.2 miles to the west of Selhurst, bring joints at vanity tops, bars and reception desks that guests see every day.
Why deal with it now?
Some managers wait for a fit-out before touching the mastic. For internal joints that are only cosmetic, that can make sense, but a joint letting water in now keeps doing damage until the refurb arrives. Splitting the scope into now and later is often the sensible compromise.
Comparing quotes
- Will CSCS-carded applicators be on site?
- How the existing material will be dealt with
- What site paperwork they can supply
- How long is the guarantee, and what does it include?
What sets the cost
These are the things that shape the price:
- Which sealant the job calls for
- Whether old sealant has to be cut out first
- Working within restricted access windows
- Joint width, depth and condition
The specified product makes a difference, and so does the preparation, such as cutting out, priming or new backing rod. Access, phasing and site requirements come into it too.
What to include in your enquiry
Whether it’s one area or a whole building, these details speed things up:
- The product your specification calls for
- A wide shot and a close-up of the area
- The asbestos register, for older buildings
- Rough lengths or quantities, or drawings if you have them
Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. To get it moving, call the office on 01277 525 020 or email drawings and photos.
Maintenance after handover
A few simple habits keep the new joints working:
- Ask fit-out and M&E contractors to report any sealant they disturb
- Don’t let cleaning or traffic back on before the cure time is up
- Keep washroom and kitchen extraction working
- Keep abrasive pads and scrapers off resealed joints
Later works are the usual way new joints get damaged. When fittings are moved or cabling added, the sealant nearby is easily disturbed, and it’s easy to forget to reseal afterwards. If that happens, phone 01277 525 020 or email us and we’ll price putting it right.
Each spell of wet weather pushes more water through an open joint. Behind a panel or frame, that water can sit unseen for a long time. Resealing early keeps the problem in the sealant and out of the building.
Different surfaces, different methods
Facade and cladding joints
Facade sealant failures can be hard to spot from the ground. Photos from a closer viewpoint help us price, with colours confirmed for the product chosen.
Fire-rated seals where specified
Not every penetration suits a sealant. Other products, such as collars, wraps and batts, are specified for different services.
Why it fails
If only one face has lost its grip, that’s an adhesion failure. The usual causes are poor preparation, a missed primer, contamination on the joint face or sealant bonded to the base of the joint. It’s one of the commonest faults we find on earlier work.
Site and facilities staff are often the first to spot these:
- Movement joints packed with grit and debris
- Layers of sealant, all of them failing
- External beads that have gone brittle and cracked
- Black mould through washroom sealant that won’t clean off
FAQs: SE25
Who decides which product is used?
A specification, where there is one, decides it. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.
Do you work in SE25?
Yes. SE25 falls within our area, and the simplest way to start is to give us a call on 01277 525 020 or email a schedule or drawings.
Are you CHAS accredited and on Constructionline?
Yes. We are CHAS accredited and a Constructionline member, which helps with supplier vetting.
Are your applicators CSCS-carded?
Yes. We use CSCS-carded applicators, which many sites require.
Is your work guaranteed?
Our workmanship on each job is backed by a 12-month guarantee. We are fully insured for public liability as well.
Can you handle sealant work across several sites?
Yes. We take on runs of jobs across portfolios as well as single sites.
How long before the joints can be used?
The product and site conditions decide that. Some take light use quickly, others need longer to cure, so we’ll confirm the curing time on the day.