Mastic sealant contractors in Catford
Work needed on a mastic joint in Catford? We assess it, carry out the work and guarantee our workmanship for 12 months.
- Mastic failing across several blocks on an estate
- Window mastic that has split and shrunk
- Patchy repairs in mismatched sealant
Mastic sealing across Catford
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Common problems we fix in Catford
UV and rain age external sealant. The surface chalks, the body stiffens and cracks appear most of all on the sunniest and most exposed elevations.
If one of these sounds familiar, it’s time for a closer look:
- Draughts at frames across a block
- A mix of products and colours from past repairs
- Mastic failing across several blocks on an estate
- Open joints in brickwork or panels
If you look after a block within reach of Catford Bridge station, 0.5 miles to the north-west of Catford, frame and balcony mastic can be renewed on one programme.
What your quote should include
- Will CSCS-carded applicators be on site?
- The terms of the workmanship guarantee
- Will RAMS and insurance details be available?
- Whether old or failed sealant will be cut out, not overlaid
About our mastic sealing in Catford
On a residential block, the work happens around people’s lives. The sequence, the areas and the dates are settled with you so you can let residents know what is happening. Entrances and stairwells are kept in use while we work. The enquiries we see most involve patchy repairs in mismatched sealant and water getting in round frames after rain, across communal kitchens and washrooms, window and door perimeters on blocks and communal entrances and stairwells. Whether you call it commercial sealant work, mastic application or joint sealing, the work in Catford is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.
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.
Work we carry out comes with a 12-month guarantee. If an installation problem shows up, give us a call on 01277 525 020 or send photos by email and we’ll arrange a return visit.
- Where
- Catford (SE6, BR1)
- Region
- Greater London
- Guarantee
- 12 months on our workmanship
- Quotes
- Quoted before any work starts
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Surface by surface
Commercial and mixed-use buildings
Commercial occupiers normally stay open during the work so the work is phased.
Tenement and older buildings
Stone needs a neutral-cure product and we choose accordingly.
Also in Catford
Looking after buildings in and around Catford
For a London block, the agent or landlord normally handles notices to residents and access to flats. We work to your notice and access plan. There are four care or nursing homes within about 2 miles of Catford. For owners and operators of care buildings, window perimeters and external joints are best renewed in planned phases around residents.
Property owners at sites such as Bell Green Retail Park, 1 mile to the south-west of Catford, can have mastic renewed between lettings. For a school such as Holy Cross Catholic Primary School, perimeter mastic on windows and doors is a holiday job.
Catford is about 5 miles east of Streatham, in Greater London. If you’re looking for mastic sealing in Catford, we can help. Our Greater London coverage takes in 764 places.
Anyone looking for mastic sealing in SE6 and BR1 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. If your site is on Bargery Road, Penerley Road and Inchmery Road or close by, send details and we’ll quote for mastic joints. Just outside Catford, we also work in Bellingham (1 mile south-west), Southend (1 mile south-west), Ladywell (1 mile north), Hither Green (1 mile north-east) and Bell Green (1 mile south-west). Further afield, our area takes in London (5 miles north-west), City of Westminster (8 miles north-west), Marylebone (8 miles north-west), Kensington (9 miles north-west), St Pancras (7 miles north-west) and Shoreditch (6 miles north-west).
Around Catford
In Catford, that means premises near The London & Rye pub, Trinity Church of England School and Forster Memorial Park and the streets around them. For rail, the closest station is Catford Bridge station, roughly 0.5 miles north-west. Well-known places in the area include Greenwich Castle (2.6 miles north) and University Hospital Lewisham (0.8 miles north). For a walk, there’s Downham Woodland Walk and Knight's Hill.
How a job runs
Diagnose, treat, sign off: every visit follows that pattern. First comes an inspection and agreement on scope, then we prepare and seal each joint with the specified product, and we finish with a walk round so the work can be signed off. All of Greater London is in the ULEZ, and kerbside space in Catford can be scarce. If there’s a loading bay, a car park or a permit we can use, tell us when you send details.
- We inspect each building and record the joints that have failed.
- The quote is fixed and split as suits you.
- 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.
- Each building is checked and signed off with the 12-month guarantee.
Getting the site ready
- Tell us which areas need to stay in use
- Point out parking and an unloading spot
- Have the specification and drawings to hand
Get a fixed quote
Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to ring 01277 525 020 or send details through our quote form with what you know.
Read more
Honest limits
A few problems need another trade or a different fix, and we point that out rather than sealing over them:
- Broken glass or failed sealed units
- Water coming in from the roof or rainwater goods
- Leaks through the frame itself rather than the perimeter
If you’re not sure, just call 01277 525 020 or email the details over and we will give you a straight answer before you book.
Where we work in Catford
- Balcony and threshold joints
- Shopfronts below residential blocks
- Window and door perimeters on blocks
- Communal entrances and stairwells
- Communal kitchens and washrooms
- External wall and movement joints
General trades versus a specialist
Certain joints really need a specialist: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. A poor seal in places like these tends to cost more to put right later.
For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.
Questions about Catford
Can work in a care setting near Catford go ahead while residents are there?
Yes, with the manager deciding the order and timing of rooms. Tell us about any infection-control or safeguarding requirements and we’ll work to them.
Does your area include sites such as Bell Green Retail Park, near Catford?
Yes, sites like Bell Green Retail Park are within our area, along with the rest of Catford. Send details of the unit and the work through our quote form for a quick quote.
Who decides which product is used?
A specification, where there is one, decides it. Without one, the joint decides: its movement, its surfaces and what it has to cope with.
What will the job cost?
Every job gets its own fixed quote. For yours, call 01277 525 020 or send photos by email with a description of the work.
How long before the joints can be used?
We will confirm how long the chosen product needs to cure.
When is resealing likely to be due?
Nobody can honestly give a figure in years, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular inspection is the best way to catch problems early.
How many days will you need on site?
The duration is planned around your programme and the access we are given. You will have an expected duration with the quote.
Looking after the joints
A few simple habits keep the new joints working:
- Make mastic part of routine maintenance checks
- Reduce knocks to communal area joints
- Start inspections with the most exposed faces
- Make it easy for occupiers to report draughts
Encourage occupiers to report water or draughts at frames. Early reports catch failures before damage spreads.
Budgets are easier to plan when sealant is part of planned maintenance. A programme can start with the worst buildings and work down the list.