Facade Sealing contractors in Cannon Hill
Facade sealing in Cannon Hill, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.
- New sealant peeling off old mastic
- Weathered joints at frame-to-structure perimeters
- Cold air coming in at window perimeters
Facade sealing near Cannon Hill
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
General trades versus a specialist
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 easy to get wrong without experience.
Certain joints really need a specialist: 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.
Facade sealing in Cannon Hill
External sealing depends on the weather more than most trades. The sealant needs a dry joint and temperatures inside the maker’s limits, so frosty or damp mornings can hold work back. We build that into the programme and tell you if the forecast changes the plan. We work on coping and flashing joints, shopfront frames and cladding panel joints, and the usual reasons a site gets in touch are patch repairs that keep failing and cladding panel joints that have opened up. One point of contact handles commercial sealant work in Cannon Hill from the first photos to the final walk-round, whether it’s one building or several.
A great deal of London construction is refurbishment of occupied or part-occupied buildings, alongside new blocks. Replacement windows, recladding and fit-outs leave perimeter and facade joints to seal, often next to people still using the building, so tidy, well-planned work matters.
Our 12-month guarantee is about workmanship, not wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we spell out the cover before we begin.
- Where
- Cannon Hill (SW20, SM4, KT3)
- Wider area
- Greater London
- Cover
- A 12-month guarantee
- Price
- A fixed quote before we start
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
Keeping the joints sound
After handover, these steps help:
- Check that rainwater leaves the facade the way it was designed to
- Avoid patch repairs on failed facade joints
- Ask about asbestos in pre-2000 mastic
- Note when each elevation was last resealed
Look at perimeter and panel joints as part of routine building checks. Signs to look for are cracking, edges lifting, chalking and stiffness; record the locations.
Check older buildings for asbestos before disturbing old mastic. Older sealants can contain asbestos, and if it’s suspected, we stop until it has been tested.
Commercial clients in Cannon Hill
Hotels, schools, healthcare sites, offices and retail units book us directly too. The work is planned around how the building runs, so guests, pupils, patients or staff are disturbed as little as possible.
If you look after buildings for someone else, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end, plus a 12-month guarantee.
On site: what to expect
Where the site stays busy, the work is phased so only one area is out of use at a time. Each section is protected, cleaned back and sealed, then handed back before the next one starts. The ULEZ covers the whole of Greater London, and parking near a job is rarely simple. Let us know about any on-site parking or loading arrangements when you send the job details.
- We look at the joints, the drawings and the access before pricing.
- Failed sealant is cut out along its full length.
- Joint faces are cleaned to firm, sound material, with primer where the sealant maker specifies it.
- Backing rod, or bond-breaker tape in shallow joints, limits the depth.
- The new sealant goes in and is tooled firmly onto both faces.
- We walk the finished joints with you before handing over.
Preparing the site
- Share the asbestos register for older buildings
- Make sure the joints can be reached
- Tell us which areas need to stay in use
Quotes
Send us photos, drawings or a joint schedule are often enough for a fixed quote. Where a site visit makes more sense, we’ll arrange one.
Related advice
Also near Cannon Hill
What else we do in Cannon Hill
Honest limits
We check first that sealant really is the fix. It isn’t the answer for:
- Damp caused by condensation inside the building
- Replacing glass or failed glazing units
- Movement beyond what any sealant can handle
If you are not sure, just call the office on 01277 525 020 or email a schedule or drawings and we will give you a straight answer before you book.
Where we work in Cannon Hill
- Stone and brick facade joints
- Window and door perimeters
- Cladding panel joints
- Coping and flashing joints
- Perimeter joints where frames meet the structure
- Shopfront frames
Contractors’ notes for Cannon Hill
The ULEZ covers the whole of Greater London, Cannon Hill included, so site vehicles need to meet its standards or pay the daily charge. London sites also mean booked deliveries and limited storage, which the mastic programme has to allow for. A 2-mile radius around Cannon Hill takes in plenty of hotels. Hotel refurbishments often run to tight programmes between busy periods, and perimeter and sanitary sealant has to keep up.
University estates such as Kingston University (Kingston Hill Campus) (2.8 miles north-west of Cannon Hill) tend to have a rolling programme of new buildings and refurbishments, each with window perimeters and facade joints to seal. Projects at colleges like Merton College (to the south-east of Cannon Hill) tend to run to term dates, so the mastic is planned tightly. On a healthcare site such as New Victoria Hospital, 1.9 miles north-west of Cannon Hill, new blocks and refurbishments go on while the hospital keeps running, so mastic work is sequenced carefully.
Cannon Hill is about 1 mile north-west of Morden, in Greater London. Businesses, contractors and managing agents in Cannon Hill use us for work on facade joints. 764 places across Greater London fall within our area, Cannon Hill among them. There’s a separate page for London, roughly 9 miles from Cannon Hill.
Business premises anywhere in SW20, SM4 and KT3 are within our area for facade joints. Among the streets we cover are Aylward Road, Camborne Road and Botsford Road. We also cover Bushey Mead (1 mile north-west), Raynes Park (1 mile west), Wimbledon Chase (1 mile north), West Barnes (1 mile west) and Merton Park (1 mile north-east). A short drive away, we cover London (9 miles north-east), City of Westminster (8 miles north), Marylebone (9 miles north), Kensington (7 miles north), St Pancras (10 miles north-east) and Shoreditch (11 miles north-east).
Around Cannon Hill
Locally, jobs take us to sites close to The Edward Rayne pub, Cannon Hill Common and Harris Academy Wimbledon and the streets around them. For rail, the closest station is South Merton station, roughly 0.5 miles north-east of the centre. Other landmarks nearby include St. Anthony's Hospital (1.5 miles south) and Wimbledon Museum (1.6 miles north). The countryside around Cannon Hill includes Cherry Wood and Henman Hill.
Questions we’re asked in Cannon Hill
Can you work on a hospital site such as New Victoria Hospital?
Yes, hospitals are one of the sectors we cover. We follow the site’s permits, sign-in and infection-control procedures in every area.
Will you take on work at estates like Rainbow Industrial Estate, close to Cannon Hill?
Yes. We cover Cannon Hill and the area around it, including industrial estates, business parks and retail parks such as Rainbow Industrial Estate. To start, just speak to us on 01277 525 020 or use the quote form with the unit, the joints involved and your access times.
How is access to upper-level joints handled?
We agree access with the client at the start. Let us know what access is in place or planned, and the quote will reflect it.
How much does the work cost?
We don’t publish prices, as every site differs. With photos or drawings, we can give you a fixed quote.
How do you choose the sealant?
A specification, where there is one, decides it. Without one, the joint decides: its movement, its surfaces and what it has to cope with.
Is it okay to overlay old mastic?
No. Overlaying is a shortcut that peels away quickly. We remove the failed sealant, clean the faces, set the depth and reseal.
Will your applicators have CSCS cards?
Yes. We use CSCS-carded applicators.
Quoting for work in Cannon Hill
A fixed quote reflects the actual work. It allows for:
- The total length or number of joints
- Working within restricted access windows
- Distance, for remote addresses
- How much existing material needs removing
The price depends on how many linear metres there are, what has to come out first and how the joints are reached. Call for a quote once you have the details.
Details that help us quote
However big the job, these details speed things up:
- The product your specification calls for
- How the joints are reached, and at what height
- Approximate linear metres or a joint schedule
- Whether the building will be occupied during the work
For a fixed quote, call 01277 525 020 or email drawings and photos. You can also send details through our quote form.