Construction and new-build mastic in East Dulwich, Greater London
Construction mastic in East Dulwich, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.
- External joints sealed in damp or cold conditions that are now failing
- Mastic snags holding up handover
- Cracks opening in caulked internal joints
Construction mastic in East Dulwich
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Construction mastic for commercial buildings in East Dulwich
Buyers, tenants and clients notice sealant lines long before they notice the structure. A smeared bead round a window or a gap behind a worktop ends up on the snag list, and every return visit costs time. We seal so the snag list stays short. Site teams most often ask us about sealant knocked or painted over by other trades and snag items on joints that need redoing before handover, on window and door perimeters, cladding and panel joints and internal decorators’ caulk. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in East Dulwich, preparation and product choice get the time they need.
The ULEZ covers the whole of Greater London, so contractors’ vehicles on a job in East Dulwich must meet its standards or pay the daily charge. Alongside that, sites typically need booked deliveries and a plan for where materials go.
Every job ends the same way: guaranteed. Our workmanship is backed for 12 months, and we explain exactly what that covers when we quote.
- Place
- East Dulwich (SE5, SE22, SE15)
- Wider area
- Greater London
- Cover
- 12 months on our workmanship
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Page updated
- 3 November 2026
Common problems we fix in East Dulwich
Wide, tapered or inconsistent gaps around frames are a common problem. Sealant has a range of joint widths it can cope with. Better to raise it at the start than seal a joint that’s bound to fail.
Any of the following is a good reason to get the joints checked over:
- Frame gaps too wide for sealant alone
- Mastic snags holding up handover
- Frame perimeters left unsealed or poorly sealed
- New external sealant already peeling away
Work at a hotel such as OYO New Dome Hotel (0.9 miles north of East Dulwich) tends to be programmed around bookings, mastic included.
What your quote should include
- Whether primer will be used where the manufacturer specifies it
- How they’ll work around occupants
- What the guarantee covers, and for how long
- Are they CHAS accredited or on Constructionline?
Should maintenance staff do it?
What you see is the finished bead, but most of the work is hidden. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.
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.
Common questions from East Dulwich clients
Do you work in London buildings with loading restrictions?
Yes. Inductions, permits and timed loading are routine for us in London. The building manager’s rules go straight into our method. We allow for the ULEZ, which covers every borough
Would you work within a site like Maudsley Hospital?
Yes. Healthcare sites are among the places we work. The estates team’s permit system and infection-control rules come first, and the work is planned around them.
Can you fit around our programme?
Our work is sequenced around the programme. Areas are sealed as they’re released by the site team, and we’ll raise anything that holds the work up.
How do we ask for a quote?
It works in four steps: send details, receive a fixed quote, we carry out the work, and it’s guaranteed. The first step only needs photos and a postcode.
Can you seal external joints in wet or cold weather?
External sealant needs a dry joint and a temperature within the product’s range. Damp, frost or condensation on frames can stop work, so internal areas are often done on those days.
Can you work to our specification?
We follow the specified sealant. Specifications often reference BS EN 15651 or BS 6213.
What does a mastic package normally include?
It depends on the specification, but frames, sanitary, kitchens, caulk where specified and snagging are typical.
How the quote is worked out
A fixed quote reflects the actual work. It takes account of:
- The product specified
- The size and state of each joint
- Access and working height
- How much existing material needs removing
Larger quantities, tricky access or phasing all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.
What to include in your enquiry
It doesn’t need to be a full survey. These details are enough to start:
- Clear photos of the problem areas
- Rough lengths or quantities, or drawings if you have them
- The type of building and who uses it
- Anything awkward about access or site hours
If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price against exactly what is specified. For smaller jobs, photographs and a description will do.
Also near East Dulwich
Other services in East Dulwich
How a job runs
When we get to site, we report to your site contact and complete whatever induction the building runs. Floors, finishes and fittings next to the joints are covered before anything is cut or cleaned, and the work normally takes a few days on a modest refurbishment and longer on multi-plot or multi-storey schemes. In East Dulwich, most buildings stay in use during the work, so we agree zones and timings with the building or facilities manager. Phased work keeps the rest of the building in use.
- Drawings, specification and programme come to us.
- Quantities are measured and a fixed price returned.
- The sequence is agreed with the site manager.
- Each area is sealed when it’s released.
- Every joint is cleaned, set to depth and sealed with the specified product.
- Snags are cleared and the package signed off with our 12-month guarantee.
Getting the site ready
- Point out parking and an unloading spot
- For older buildings, check the asbestos register before work
- Confirm the product named in the specification
Get a fixed quote
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, ring 01277 525 020 or use the quote form.
Read more
For managing agents and facilities managers
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, and each stage is agreed with your contact.
Building owners and managing agents use us on sealant work across single buildings or whole portfolios. Several sites can go on one quote, so there’s one set of paperwork to deal with.
Building and refurbishing in East Dulwich
Plenty of hotels sit less than 2 miles from East Dulwich. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up. Site traffic in East Dulwich falls within London’s ULEZ, like everywhere else in Greater London. Deliveries are booked and storage is tight, so mastic materials come in as needed.
For a contractor working at a hospital such as Maudsley Hospital (0.6 miles north-west of East Dulwich), perimeter and facade sealing is planned around patients and deliveries. Building work at universities like King's College London (to the north-west of East Dulwich) is often timed for the summer, mastic included.
East Dulwich is about 3 miles south of London, in Greater London. Businesses, contractors and managing agents in East Dulwich can call on us for mastic packages. East Dulwich is one of 764 places we cover in Greater London.
Business premises anywhere in SE5, SE22 and SE15 are within our area. We cover commercial and managed buildings on Rye Lane, Wren Road and Adys Road. You will find East Dulwich on or near the A2214 and A2215, so getting applicators and materials to site is simple. Nearby places we also cover include Denmark Hill (1 mile north-west), Herne Hill (1 mile south-west), Dulwich Village (1 mile south), Camberwell (1 mile north) and Peckham (1 mile north-east) for mastic packages. Nearby towns on our patch include London (3 miles north), City of Westminster (5 miles north-west), Marylebone (5 miles north-west), Kensington (6 miles north-west), St Pancras (5 miles north) and Shoreditch (4 miles north).
Local landmarks in East Dulwich
Locally, jobs take us to sites close to The Fox on the Hill pub, The Charter School East Dulwich and The Charter School and the streets around them. East Dulwich has its own railway station: East Dulwich station. Nearby you will also find House of Dreams Museum (under half a mile south-east) and Surrey Quays Shopping Centre (2.8 miles north-east). Open spaces near East Dulwich include Knight's Hill and Centre for Wildlife Gardening.
Why it’s worth doing now in East Dulwich
Getting the mastic contractor involved early pays off. Early involvement means gaps, products and access are sorted before the programme bites. Called in at the end, the same issues surface during handover. Repeat call-outs disrupt occupied London buildings, so a proper job first time, with the old sealant fully removed, is worth it.
There’s no price list, because the scope varies so much from one building to the next. For a fixed figure, call for a quote and we will price your job on its own details.
Why us?
- CSCS-carded applicators
- Constructionline member for supplier checks
- A fixed quote before work starts
- Health and safety: CHAS accredited