Mastic sealant contractors in East Dulwich
Mastic sealing for building owners, managing agents and housing associations throughout East Dulwich and nearby, carried out by CSCS-carded applicators. CHAS accredited and fully insured.
- Draught complaints from residents or tenants
- Communal area joints that look neglected
- Movement joints with sealant missing
Need mastic sealing in East Dulwich?
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Mastic sealing for commercial buildings in East Dulwich
Different joints need different sealants. Window perimeters and external joints often take a low-modulus neutral-cure silicone, and MS polymer sealants stick well to many substrates and often take paint. We will confirm the colours available for the specified product. We work on external wall and movement joints, communal entrances and stairwells and balcony and threshold joints, and what we’re called in for most is draught complaints from residents or tenants and water getting in round frames after rain. Facilities teams, main contractors and managing agents in East Dulwich tend to want the same three things: a clear scope, tidy work and joints that don’t fail again.
Planning mastic work on a London block means notices to residents, access to flats and agreed working areas. Work is planned with the agent so residents get notice and access is arranged in advance.
Building owners and contractors get the same cover: twelve months on the work we carried out. It doesn’t extend to damage, faults in the building or work by others, and we’re upfront about that.
- Location
- East Dulwich (SE5, SE22, SE15)
- Region
- Greater London
- Cover
- 12 months on our workmanship
- Price
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
Surface by surface
Planned maintenance
Planned resealing replaces emergency callouts and spreads the work.
External movement joints
Failed sealant is removed, backing rod inserted to control depth and the joint resealed with a grade whose movement class fits.
Mastic sealing around East Dulwich: how the place shapes the job
For a London block, the agent or landlord typically handles notices to residents and access to flats. We fit the programme to your notice periods.
If you are responsible for a building such as The Latter Rain Outpouring Revival Church, frame and door mastic needs the same attention as any other property. Landlords with units on estates such as Goose Green Trading Estate (to the east of East Dulwich) can bring frame, door and external mastic across several units into one programme. Site managers at schools like Dog Kennel Hill School can fit frame mastic into the summer works.
East Dulwich is about 3 miles south of London, in Greater London. Across the SE5 postcode area, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. East Dulwich is one of 764 places in Greater London on our list for mastic joints.
Work on mastic joints is covered throughout SE5, SE22 and SE15. We cover commercial and managed buildings on Rye Lane, Wren Road and Adys Road and the roads nearby. You’ll 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). 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. East Dulwich has its own railway station: East Dulwich station. Well-known places in the area include 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.
After the work
Once the work is signed off, a little attention goes a long way:
- Check sealant joints during planned building inspections
- Keep a record of when each building was resealed
- Plan resealing building by building rather than complaint by complaint
- Mention RAMS, insurance or CSCS requirements up front
Protect entrance and corridor joints from knocks where possible. Knocks cause many early failures in communal areas.
Left open, joint edges in render, brick or frames can deteriorate. Once that happens, repairs come before resealing.
Nearby places to East Dulwich
Other services in East Dulwich
FAQs: East Dulwich
Do you take on jobs in East Dulwich where loading and access are tightly controlled?
Yes, we plan every London job around the building’s own access rules. Send the building rules and access times with your enquiry. We allow for the ULEZ, which covers every borough
Does your area include sites such as Goose Green Trading Estate, near East Dulwich?
Yes. We cover East Dulwich and the area around it, including industrial estates, business parks and retail parks such as Goose Green Trading Estate. To start, just call the office on 01277 525 020 or email a schedule or drawings with the unit, the joints involved and your access times.
How long does a job like this take?
The duration is planned around your programme and the access we’re given. You will have an expected duration with the quote.
Do you work for managing agents and housing associations?
Yes. Most of our mastic sealing is for agents, factors, housing associations and portfolio landlords and work can be quoted per building or as a whole.
When can the area be used after sealing?
We’ll confirm how long the chosen product needs to cure.
What about access for upper-floor joints?
Access is discussed and agreed before the quote is fixed. Tell us the number of storeys and whether scaffold or other access is planned, and we’ll tell you how we’d approach it.
Can weather delay the job?
It can, for external work. Sealant won’t bond properly to a wet or frosty joint, so we watch the forecast and rearrange outside work if we have to. Internal work is far less affected.
Quoting for work in East Dulwich
Your fixed quote is built from the real scope. It allows for:
- Which sealant the job calls for
- Site requirements such as inductions and permits
- Location, for remote and island sites
- How much there is to seal
Pricing mastic joints depends on quantities, condition and access, plus any specification you’re working to. Ask us for a fixed quote.
What to include in your enquiry
The more we know, the firmer the quote. Helpful details to send:
- Whether an asbestos survey exists
- Access details, including height
- The type of building and who uses it
- The product your specification calls for
Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To ask for one, call the office on 01277 525 020 or email a schedule or drawings.
Why deal with it now?
Open external joints let water into walls and around frames. That can lead to damp, staining and damage to finishes, which is harder to deal with than resealing. Access in London is hard enough to arrange once, so while access is arranged it pays to renew all failing joints, not just the worst.
Access often affects the price as much as the sealing: joints within easy reach take less time than ones that need access equipment. Tell us how the joints are reached and call for a quote.
Why us?
- Our applicators hold CSCS cards
- 12 months’ guarantee on every job
- Work to your specification and the manufacturer’s guidance
- A range of standard colours, depending on the product
Read our cost guide and our accreditations.
Our process
Tell us your site hours and access windows and we’ll plan around them. While we’re working, the area stays contained and tidy, and your contact hears from us before we move to the next area. In East Dulwich, most buildings stay in use during the work, so zones and timings are agreed with whoever manages the building. Areas are handed back as each section is finished.
- First comes a look at the joints and, for older buildings, the asbestos records.
- A fixed quote covers the joints, products and order of work.
- We strip out the old sealant.
- The joints are prepared and resealed with the right product.
- Buildings are completed in turn.
Getting the site ready
- Let building users know which areas are affected
- Make sure the joints can be reached
- Flag any permit to work we will need
Request a quote
Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to give us a call on 01277 525 020 or email us with what you know.
Related advice
Should maintenance staff do it?
For most general trades, sealant is a sideline. 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.
Using site staff can make sense for a small touch-up, but anything bigger is another matter: a specialist brings efficiency, a consistent finish and a 12-month guarantee.