East Sheen mastic sealing
Planning work on a mastic joint in East Sheen? We assess it, carry out the work and guarantee our workmanship for 12 months.
- Cracked, hardened mastic round windows on a block
- No planned programme for sealant
- Damp patches beside frames
Mastic sealing for East Sheen sites
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Mastic sealing in East Sheen, done properly
In buildings from before 2000, some old mastics contain asbestos. Before we disturb it, we ask to see the asbestos register or survey, and work stops for testing if there’s any doubt. We don’t remove asbestos-containing materials. The enquiries we see most involve water getting in round frames after rain and damaged joints in communal entrances and corridors, across communal entrances and stairwells, window and door perimeters on blocks and communal kitchens and washrooms. One point of contact handles commercial sealant work in East Sheen from the first photos to the final walk-round, for single jobs and planned programmes alike.
London has a large stock of purpose-built blocks, mansion flats and converted buildings managed by agents and housing associations. Mastic around windows, doors and balconies tends to fail across a whole block at a similar time, which is why block-wide programmes make sense.
Whoever the client is, the cover is the same: a 12-month guarantee on our workmanship. It doesn’t extend to damage, faults in the building or work by others, and we are upfront about that.
- Place
- East Sheen (SW14, SW13, SW15)
- Wider area
- Greater London
- Guarantee
- A 12-month guarantee
- Price
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
FAQs: East Sheen
Do you work for managing agents with blocks near Mortlake station?
Yes, and several blocks can go on one quote. Send the address, photographs of the elevations and your access arrangements, and we’ll give a fixed quote.
Will you take on work at estates like Kew Retail Park, close to East Sheen?
Yes. Our area takes in East Sheen and its surroundings, with estates and business parks such as Kew Retail Park included. A few photos and the unit address let us price the work.
Do you do block-wide mastic programmes?
We can. We survey and price each building, then work through them in order starting wherever is most urgent.
What paperwork can you provide?
Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote. We are CHAS accredited and a Constructionline member.
Is it fine to apply new sealant on top of old?
No. We cut the old material out and clean the joint back before sealing, because fresh silicone will not bond with aged silicone.
Do you guarantee the mastic work?
Every building we reseal has a 12-month guarantee. It covers our workmanship, not later building movement, damage or frame failures.
Do you work for managing agents and housing associations?
Yes, that’s exactly who this service is for. We work through buildings in a planned order with dates agreed in advance.
What we can’t put right
Being straight saves everyone time. Fresh joints won’t solve:
- Misted or failed double-glazed units
- Water coming in from the roof or rainwater goods
- Asbestos-containing sealant, which we don’t remove
If you are not sure, just give us a call on 01277 525 020 or send photos by email and we’ll give you a straight answer.
Where we work in East Sheen
- Communal kitchens and washrooms
- Window and door perimeters on blocks
- Communal entrances and stairwells
- External wall and movement joints
- Shopfronts below residential blocks
- Balcony and threshold joints
Work for main contractors and building owners
Hospitality, education, healthcare, office and retail clients book us directly too. We plan around the way the building is used, so guests, pupils, patients or staff are disturbed as little as possible.
Blocks and communal areas make up much of the work for housing associations and agents. We phase the work so people keep access, with each stage agreed with your site contact.
What we’re called out for in East Sheen
The edges of the material itself sometimes break away for instance where render or brick edges crumble. We will tell you if the joint edges need repairing before resealing.
Any of the following is a good reason to get the joints checked over:
- The same joint failures repeated across a portfolio
- Occupiers reporting cold air round windows
- A mix of products and colours from past repairs
- Cracked, hardened mastic round windows on a block
For owners of several units at places like Kew Retail Park, 1 mile north-west of East Sheen, one programme can deal with frame and external mastic across the lot.
What your quote should include
- Who will actually carry out the work
- Are they CHAS accredited or on Constructionline?
- Their public liability cover
- How long is the guarantee, and what does it include?
Places near East Sheen
More services for East Sheen
Our process
Tell us your site hours and access windows and we will plan around them. On the day, the work area is kept contained and tidy, and your contact hears from us before we move to the next area. In East Sheen, most buildings stay in use during the work, so zones and timings are agreed with whoever manages the building. Phased work keeps the rest of the building in use.
- First comes a look at the joints and, for older buildings, the asbestos records.
- The products and programme are set out in a fixed quote.
- We strip out the old sealant.
- Joint faces are cleaned, backed and resealed.
- Buildings are completed in turn.
Preparing the site
- Clear stock, furniture or equipment away from the joints
- Send your site hours and access windows
- For older buildings, check the asbestos register before work
Getting a fixed quote
Tell us about the building, the joints and when you need the work done, and we will put a fixed quote together. The easiest way is to phone 01277 525 020 or send photos by email.
Read more
Why act early in East Sheen
Draughts round window perimeters cost occupiers comfort, and they often blame the windows. In many cases, new perimeter sealant deals with it when the frames themselves are sound. Access in London is hard enough to arrange once, so it makes sense to deal with every failing joint while access is in place.
The specified product makes a difference, and so does the preparation, from cutting out to priming and backing rod. Access, phasing and site requirements come into it too.
Why choose Mastic Doctor in East Sheen
- Our applicators hold CSCS cards
- Products installed to the manufacturer’s instructions
- Failed material removed, not covered up
- Constructionline member
When to bring in a specialist
General builders and handymen seal joints, but it isn’t their main trade. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.
Redoing a failed joint normally costs more than getting it right at the outset, since all of it has to come out and the faces be cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.
For owners and agents in East Sheen
In London, mastic work on a block goes through the managing agent or landlord, with notice to residents. We fit the programme to your notice periods.
Student accommodation around universities such as University of Roehampton, 1.2 miles to the south-east of East Sheen, is usually managed block by block, which suits a planned mastic programme. If you look after a block within reach of Mortlake station, less than half a mile north of East Sheen, frame and balcony mastic can be renewed on one programme.
East Sheen is about 3 miles west of Fulham, in Greater London. Commercial clients in East Sheen can call on us for mastic joints, as part of our coverage of Greater London. Across Greater London, 764 places are covered, East Sheen among them. There’s a separate page for London, about 8 miles away.
Business premises anywhere in SW14, SW13 and SW15 are within our area for mastic joints. We cover commercial and managed buildings on Elm Road, Well Lane and Fife Road and the roads nearby. Sites close to East Sheen are covered too, including Mortlake (1 mile north-east), North Sheen (1 mile north-west), Barnes (1 mile north-east), Grove Park (1 mile north) and Richmond upon Thames (1 mile west). Nearby towns on our patch include London (8 miles east), City of Westminster (6 miles north-east), Marylebone (6 miles north-east), Kensington (4 miles north-east), St Pancras (8 miles north-east) and Shoreditch (9 miles north-east).
Near you in East Sheen
We work on buildings around Hare and Hounds pub, Palewell Park and Ibstock Place School and the streets around them. There’s a railway station in East Sheen itself: Mortlake station. Nearby you’ll also find Ubuntu Museum: African Museum of Humanity (1.1 miles south-east) and Barnes Hospital (0.5 miles east). The countryside around East Sheen includes Duke's Hollow and Kew Gardens Lake.