Greater London · England
Window & door mastic in Colliers Wood, Greater London
Mastic around window and door frames, sills and patio doors for Colliers Wood, backed by a one-year guarantee. Call for a quick quote.
- White mastic on grey or black frames
- Cracked internal joints between frame and plaster
- Rushed sealant from a window installation
Your questions about window mastic in Colliers Wood
Do you cover Colliers Wood for window mastic?
Yes, Colliers Wood is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or email us and let us know what needs doing.
Can you help a landlord with a rental near Tooting station?
Yes. We work for landlords and agents as well as householders, and several properties can be quoted together. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
Is the work guaranteed?
Yes. Our one-year guarantee covers every job, inside or out.
When is the sealant fully cured?
Cure times vary by product and the temperature. Before we leave, we will tell you the cure time.
Can you get sealant to suit coloured frames?
Yes. We can use white, brown, anthracite grey, black or clear, so the joint suits the frame.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
Will the old sealant be removed?
Yes, every time. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
What do you put in the joint?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
How we handle window mastic in Colliers Wood
A window frame and the wall around it expand and shrink at different rates. Heat and cold make frames grow and shrink against brick or render that hardly moves. That’s why the joint needs a flexible, low-modulus sealant rather than something rigid. Common call-outs are for cold air getting in at the frame edge and rain getting in at the frame or under the sill, across window sills, timber windows & doors and uPVC windows.
London’s Victorian and Edwardian terraces were built with timber sash windows, and many still have them or their replacements. Whatever is in the opening now, the joint between frame and wall is what keeps the weather out, in Colliers Wood as anywhere.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Place
- Colliers Wood (SW17, SW19, CR4)
- Wider area
- Greater London
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Keeping the joints in good condition
Aftercare is simple:
- Walk round the house once a year and look at the joints
- Make sure the drainage slots aren’t blocked
- Keep solvents and bleach off the sealant
- Paint up to the joint, not over it
Timber frames need their paint kept up, since wood that gets wet swells and shrinks more. Paint up to the joint, not over the silicone.
Wet, windy weather is when failed mastic shows itself, but sealant goes on best when frames and walls are dry. Dealing with it when you first notice a crack avoids chasing leaks through the wet months.
The process
There is not much for you to do on the day. Show us the job and we will take it from there. The work itself takes a few hours for a few frames, or a day or more for a whole house from start to finish. For a job in Colliers Wood, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
Getting ready for the visit
- Mention any leaks or damp you’ve noticed
- Try not to wet indoor joints just before the visit
- Let us know about parking restrictions
Ask for a quote
For window mastic in Colliers Wood, phone 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Related advice
When it isn’t the sealant
Some problems need a builder, plumber or other trade rather than us:
- Rotten timber, which needs a joiner first
- A door that needs adjusting, rehanging or new seals
- A failed sealed unit that has misted up
If you are not sure, just call 0345 464 0079 or send us an email and we will give you a straight answer.
Where we work in Colliers Wood
- Patio & French doors
- uPVC windows
- Aluminium frames
- Window sills
- Composite doors
- Timber windows & doors
What window mastic looks like in Colliers Wood
Historic houses like Southside House (about 2.8 miles west) are a reminder that the area around Colliers Wood has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Homes close to St Nicholas include some older properties, and the joint between an old wall and a newer frame is generally the first place rain gets in. For site and facilities teams at buildings such as Sellincourt Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Colliers Wood is about 5 miles south of Brompton, in Greater London. Our applicators cover window mastic for homeowners, landlords and businesses in Colliers Wood and the surrounding area. We cover 764 towns and villages across Greater London, from the larger towns to small villages. Our London page covers work nearby, about 6 miles away.
We work across the SW17, SW19 and CR4 postcode area for window mastic. Streets in the area include Acre Road, Boyd Road and Park Road. Other places close to Colliers Wood include Tooting (1 mile north), Tooting Bec (1 mile north), Merton Abbey (1 mile south-west), Furzedown (1 mile north-east) and Eastfields (1 mile south-east). Larger places within reach include London (6 miles north-east), City of Westminster (7 miles north), Marylebone (7 miles north), Kensington (6 miles north), St Pancras (8 miles north) and Shoreditch (8 miles north-east).
Near you in Colliers Wood
Typical jobs here are in homes near Figge's Marsh, Ensham School and The Royal Standard pub, among other places. Colliers Wood has its own railway station: Tooting station. Other landmarks nearby include Grove Hospital (0.6 miles north) and Wandle Industrial Museum (1.2 miles south). The countryside around Colliers Wood includes Henman Hill and Myrna Close.
Do you need window mastic in Colliers Wood?
Some failures date back to when the windows were fitted. Mastic laid onto dusty, damp or crumbling surfaces never bonded as it should, and it lets go sooner than it should.
People generally contact us when they notice something like this:
- White mastic on grey or black frames
- Gaps left after new windows were fitted
- Mastic that is falling out in pieces
- Draughts coming in around windows and doors
As a London address, Colliers Wood can be tricky for parking: let us know about parking bays, permits or a driveway.
What to look for in a quote
- Whether they seal over old material or remove it
- How the colour is chosen
- Who turns up on the day
- What the cure time is
Nearby places to Colliers Wood
More services for Colliers Wood
Landlords, agents and businesses in Colliers Wood
Letting agents often deal with us directly. Tell us the address, the job and how access works.
We work for landlords and agents as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.
Quotes for window mastic in Colliers Wood
Your quote is based on your job. We look at:
- Whether there’s mould to deal with
- How much there is to do
- How many areas need sealing
- How much old sealant there is and how hard it is to remove
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- How we’d reach the joints
- The address or postcode of the job
- The rough size of the job
- What’s wrong with the joints now
Asking for a quote is easy: let us know what needs doing and where. Photos by email help us understand the job.
Why act early in Colliers Wood
Running fresh sealant over the old joint is tempting, but new sealant can’t bond to old, crumbling mastic. It peels before long, and water still gets in behind. The old mastic has to come out. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and by the time it shows on a wall or ceiling in Colliers Wood, the repair is bigger than the sealant job would have been.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or drop us an email and we’ll talk you through it.
Why us?
- Full insurance on every job
- We agree the colour with you first
- Experience in homes, commercial sites and hotels
- Rated 4.9 stars on Google
Read what affects the cost or our reviews.