Mastic sealing for building owners and managing agents in Widmore, Greater London
Sealant work in Widmore for main contractors, managing agents and facilities managers: mastic sealing for building owners, managing agents and housing associations, quoted at a fixed price.
- Window mastic that has split and shrunk
- The same joint failures repeated across a portfolio
- Water getting in round frames after rain
Mastic sealing in Widmore
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Aftercare for building managers
For the best life from the joints:
- Start inspections with the most exposed faces
- Share the asbestos register when you send details
- Protect low-level joints in entrances
- Avoid piecemeal callouts where you can
Include sealant in planned building inspections. Check for splits, open joints, brittle mastic and lifting edges, and note the building and elevation.
Water getting in round frames can damage plaster, decoration and the frames themselves. Resealing early keeps the job small.
How we handle mastic sealing in Widmore
We work for building owners, landlords with commercial or block portfolios, managing agents and housing associations. A planned, building-by-building programme often works better than reacting to each complaint and we quote and schedule each building in turn. If you have open joints in brickwork or panels and draught complaints from residents or tenants, we can help, whatever the surface. For commercial sealant work in Widmore, you deal with one contact from quote to sign-off, whether it’s one building or several.
Across Greater London, Widmore included, the ULEZ applies, and parking and loading rules differ from street to street. For a block or estate, it helps to know where we can park and stage materials.
Guaranteed is the last step of every job. You get a 12-month guarantee on our workmanship, and we explain exactly what that covers when we quote.
- Where
- Widmore (BR1, BR2, BR7)
- Wider area
- Greater London
- Cover
- 12 months on our workmanship
- Quote
- A fixed quote before we start
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
When to call us in Widmore
UV and rain age external sealant. It stiffens, stops stretching and cracks most of all on the sunniest and most exposed elevations.
Any of the following is a good reason to get the joints checked over:
- Patchy repairs in mismatched sealant
- Window mastic that has split and shrunk
- Movement joints with sealant missing
- Damp patches beside frames
For owners of several units at places like Chartwell Business Centre, which lies west of Widmore, one programme can deal with frame and external mastic across the lot.
Comparing quotes
- Is the sealant right for the movement and the substrate?
- Their pre-qualification and accreditations
- Whether their applicators hold CSCS cards
- Whether old or failed sealant will be cut out, not overlaid
Surface by surface
Window and door perimeters on blocks
We typically work through a block’s windows in a planned order. Access is agreed with you before the quote is fixed.
Tenement and older buildings
Traditional buildings have joints that need a careful approach. We look at the substrate before choosing a sealant.
Honest limits
Our job is the joint, not everything around it. Sealant alone won’t deal with:
- Misted or failed double-glazed units
- Failed window or door frames, which need a window contractor
- Roof leaks, gutters or failed flashings that aren’t sealant joints
Not sure which it is? You can call the office on 01277 525 020 or use the quote form and we’ll tell you honestly.
Joints and surfaces we work on
- External wall and movement joints
- Communal kitchens and washrooms
- Shopfronts below residential blocks
- Communal entrances and stairwells
- Window and door perimeters on blocks
- Balcony and threshold joints
Other services in Widmore
FAQs: Widmore
Do you work in occupied care homes around Widmore?
Yes. We work around residents’ routines, a room or two at a time. We follow the home’s own procedures throughout.
Can you work at a site such as Chartwell Business Centre, by Widmore?
Yes. Estates, retail parks and business parks around Widmore, Chartwell Business Centre among them, are all within reach. To start, just call the office on 01277 525 020 or send details through our quote form with the unit, the joints involved and your access times.
Is any job too small?
Single areas, one-off repairs and whole buildings are all quoted the same way: details, then a fixed price, then sealing, then a 12-month guarantee.
Do you seal on top of existing sealant?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.
When can the area be used after sealing?
That comes down to the sealant and the temperature. Some take light use quickly, others need longer to cure, and we confirm it before leaving site.
What guarantee do you give on resealing?
Every building we reseal has a 12-month guarantee. It applies to our workmanship rather than damage or problems with the frames.
Do you do block-wide mastic programmes?
Yes, planned programmes suit estates and portfolios. You get a fixed quote per building or for the whole job.
Why deal with it now?
Failed perimeter mastic lets cold air in around frames and the windows normally get the blame. Resealing the perimeters is often the simpler fix where the frames themselves are sound. In Widmore, each extra visit means more notices, permits and disruption, so a proper job first time, with the old sealant fully removed, is worth it.
What a job costs comes down to the quantity of joints, what has to come out first and the access. Call for a fixed quote once you have the details.
Why us?
- Fully insured, including public liability cover
- CHAS accredited
- Old sealant cut out, never sealed over
- Work to your specification and the manufacturer’s guidance
Take a look at our cost guide or our accreditations and insurance.
On site: what to expect
We schedule the visit to fit the site hours and access windows you give us. While we’re working, the area stays contained and tidy, and we check in with your contact before moving on to each new area. All of Greater London is in the ULEZ, and kerbside space in Widmore can be scarce. Let us know about any on-site parking or loading arrangements when you send the job details.
- We inspect each building and record the joints that have failed.
- You get a fixed quote, per block or for the whole programme.
- Dates and areas are agreed so occupiers can be told.
- Old mastic is removed and the joint faces prepared.
- New sealant goes in with backing rod and primer where needed.
- We check the finished work and confirm the guarantee.
Before we start on site
- Let us know about inductions and permits
- Share the asbestos register for older buildings
- Have the specification and drawings to hand
Get a fixed quote
Send us photos, drawings or a joint schedule are often enough for a fixed quote. Where a site visit makes more sense, we will arrange one.
Read more
For owners and agents in Widmore
London blocks come with residents to inform, access to agree and often a concierge or estate office to work with. We plan around the notices and access you arrange. Widmore has 21 care or nursing homes no more than 2 miles away. Owners of care premises can bring window and door mastic into a phased programme planned around the home.
Owners of student blocks near University of Greenwich - Avery Hill (3.4 miles north of Widmore) can schedule frame and external mastic for the summer vacation. For agents with blocks near Bickley station, less than half a mile to the west of Widmore, a block-wide mastic programme deals with frames, balconies and entrances in one go.
Widmore is about 1 mile east of Bromley, in Greater London. We cover Widmore, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Widmore is one of 764 places in Greater London on our list for mastic joints. Sites around London have their own page, about 9 miles away.
Anyone looking for mastic sealing in BR1, BR2 and BR7 gets the same process as the rest of our area: send details, get a quote, we seal, guaranteed. For a building on Golf Road, The Avenue and Canon Road or nearby, send details and we will quote for mastic joints. Sites close to Widmore are covered too, including Bickley (1 mile north), Elmstead (1 mile north), Chislehurst (1 mile north-east), Bromley (1 mile west) and Sundridge (1 mile north-west). Bigger towns within reach include London (9 miles north-west), City of Westminster (12 miles north-west), Marylebone (12 miles north-west), Kensington (13 miles north-west), St Pancras (11 miles north-west) and Shoreditch (10 miles north-west).
What’s near Widmore
Around Widmore, our work takes us to commercial buildings near Bird In Hand Public House, St George's and Jubilee Country Park, among other places. There’s a railway station in Widmore itself: Bickley station. Other landmarks nearby include Bridgeways Day Hospital (1 mile south) and The Mall (1.3 miles west). Not far away are Summer Hill and The Tarn.