Mastic sealing for building owners and managing agents in Charlton, Greater London
Our CSCS-carded applicators take on mastic sealing for building owners, managing agents and housing associations in Charlton. Send details for a fixed quote.
- Mastic failing across several blocks on an estate
- No planned programme for sealant
- Old repairs sealed over failed mastic
Mastic sealing for Charlton sites
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
What we can’t put right
We check first that sealant really is the fix. It won’t put right:
- Glazing that needs replacing
- Cracked or crumbling render, brick or stone at the joint edges (we’ll tell you if so)
- Asbestos-containing sealant, which we don’t remove
If in doubt, call the office on 01277 525 020 or use the quote form and we’ll say what we think.
Where we work in Charlton
- External wall and movement joints
- Communal kitchens and washrooms
- Balcony and threshold joints
- Window and door perimeters on blocks
- Shopfronts below residential blocks
- Communal entrances and stairwells
How we handle mastic sealing in Charlton
Managing agents and housing associations normally need paperwork before anyone starts. For documents, tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote. We’re a Constructionline member and CHAS accredited, and we carry public liability insurance. We work on shopfronts below residential blocks, balcony and threshold joints and window and door perimeters on blocks, and the usual reasons a site gets in touch are the same joint failures repeated across a portfolio and damp patches beside frames. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Charlton, preparation and product choice get the time they need.
For managing agents in Charlton, resident access, notice periods and the building’s rules shape the job. Work is planned with the agent so residents get notice and access is arranged in advance.
Every job we finish is backed by a 12-month workmanship guarantee. If our installation lets you down in that time, we return and fix it.
- Location
- Charlton (SE7, SE18)
- Wider area
- Greater London
- Guarantee
- A 12-month guarantee
- Quote
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
FAQs: Charlton
Is Stone Lake Retail Park, near Charlton, within your area?
Yes. Our area takes in Charlton and its surroundings, with estates and business parks such as Stone Lake Retail Park included. Send details of the unit and the work through our quote form for a quick quote.
Do you work in occupied care homes around Charlton?
Yes. Care settings are planned area by area, at times agreed with the home. Any site rules, from signing in to infection control, are agreed before we start.
How many days will you need on site?
That varies with the scale of the job, but the work normally takes a few days for most blocks, with larger programmes scheduled building by building. For bigger or phased jobs, we’ll set out a timescale with the quote.
How do you reach windows on upper floors?
It depends on the building. How upper joints are reached is agreed before work is booked so there are no surprises.
How do I request a quote?
You can use the quote form on this site; alternatively, call 01277 525 020 or email drawings and photos. Photos, drawings or a joint schedule help us quote quickly.
Does weather matter for sealant work?
For external joints, yes. Sealant needs a dry joint and a temperature within the product’s range, so damp, frosty or very cold days can stop external work. Inside work is seldom held up.
Is asbestos a concern with old mastic?
We don’t remove asbestos-containing materials. If old sealant is suspected, work stops until it’s tested, and the duty to manage asbestos sits with the dutyholder.
What else we do in Charlton
Building owners, agents and FMs in Charlton
Hospitality, education, healthcare, office and retail clients come to us directly as well. The work is planned around how the building runs, so the building keeps working while we do.
Agents, factors and owners’ representatives all follow the same route: send details, get a fixed quote, we seal, guaranteed. We can agree access arrangements and keyholder contacts beforehand.
What happens if it’s left?
Leaving failed external joints lets water reach the structure behind. Damp patches, stained plaster and decorating claims can follow and those cost far more to put right. Repeat call-outs disrupt occupied London buildings, so cutting the old sealant out fully and doing it right once is the better route.
The price depends on how many linear metres there are, how much old material needs removing and how the joints are reached. Call for a quote once you have the details.
Why appoint us
- CHAS accredited contractor
- Our applicators hold CSCS cards
- Constructionline member for supplier checks
- Standard and matched colours in many product ranges
Read what affects the cost and how we’re accredited.
Block-wide mastic in Charlton
Three care or nursing homes sit less than 2 miles from Charlton. Care home owners need frame and external mastic kept sound without unsettling residents. For a London block, the agent or landlord usually handles notices to residents and access to flats. We plan around the notices and access you arrange.
If you own or manage units on a site such as Stone Lake Retail Park (less than half a mile north-west of Charlton), failed mastic on frames, door surrounds and external joints can be dealt with unit by unit. Churches, halls and community buildings such as St Catherine Labouré are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time.
Charlton is about 2 miles west of Plumstead, in Greater London. Across the SE7 postcode area, the process is the same: details in, fixed quote out, then sealing and a 12-month guarantee. Our Greater London coverage takes in 764 places. Our London page has more on work in that area.
Commercial sites across SE7 and SE18 are covered. For a building on Floyd Road, Guild Road and Priolo Road or nearby, we can quote for mastic joints. Just outside Charlton, we also work in New Charlton (1 mile north-west), Westcombe Park (1 mile west), Woolwich (1 mile east), Vanbrugh Park Estate (1 mile south-west) and Kidbrooke (2 miles south). A short drive away, we cover London (6 miles west), City of Westminster (8 miles west), Marylebone (8 miles west), Kensington (10 miles west), St Pancras (7 miles west) and Shoreditch (6 miles north-west).
What’s near Charlton
Recent enquiries here include premises near Charlton Park, Wildwood Montessori School and Royal Greenwich Trust School, among other places. Charlton has its own railway station: Charlton station. Other landmarks nearby include British Hospital for Mothers and Babies (0.5 miles east) and Gallions Reach Shopping Park (2.3 miles north-east). For a walk, there’s Gilbert's Pit.
Different surfaces, different methods
Tenement and older buildings
Stone needs a neutral-cure product and we choose accordingly.
Window and door perimeters on blocks
On most blocks, the frame-to-wall joint is where failure shows first. We remove the failed mastic, prepare the faces, add backing rod if the joint is deep and reseal.
How a job runs
Site rules come first: signing in, inductions and any permit to work. With the paperwork done, the joints are worked through in the order agreed with your site contact, and each area is checked before we leave it. The ULEZ covers the whole of Greater London, and parking near a job is rarely simple. If there’s a loading bay, a car park or a permit we can use, tell us when you send details.
- We check the asbestos register for older buildings and look at the joints.
- 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.
Before we start on site
- Agree which areas must stay open
- Tell staff and tenants when we’ll be in
- Arrange parking or a loading space
Quotes
Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, give us a call on 01277 525 020 or email the details over.
Advice
Signs you need mastic sealing in Charlton
Sunlight and weather break mastic down over time. It stiffens, stops stretching and cracks, especially on south and west faces.
Things that normally lead to an enquiry:
- Occupiers reporting cold air round windows
- Window mastic that has split and shrunk
- Old repairs sealed over failed mastic
- Repeated reactive repairs to the same buildings
If your remit includes a building such as Thorntree Primary School, frame and door mastic can be programmed for the holidays.
What your quote should include
- Their pre-qualification and accreditations
- Is the sealant right for the movement and the substrate?
- Whether old or failed sealant will be cut out, not overlaid
- How the joint faces will be prepared and primed