Greater London · England
Window & door mastic in Woodlands, Greater London
Problem with your window and door frames in Woodlands? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Draughty joints inside around the window
- Untidy mastic left by window fitters
- Hard, cracked sealant around windows
Window mastic for homes and businesses in Woodlands
Colour matters on a frame. White, brown, anthracite grey, black and clear sealants are all available, so the line suits the frame instead of standing out. Common call-outs are for cracked sealant at the sill ends and mastic that’s falling out in pieces, on aluminium frames, patio & French doors and uPVC windows.
Much of London’s older housing was built with timber sash windows, some still in place and some long since replaced. Either way, the mastic between frame and brickwork is what stops draughts and rain getting in, in Woodlands as anywhere.
Every job comes with a one-year guarantee, wherever you are in Greater London.
- Where
- Woodlands (TW7, TW3)
- Region
- Greater London
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
How we quote for window mastic
We don’t publish a price list, because jobs vary so much. What we look at:
- Whether old sealant or filler has to be cut out
- The number and length of the joints
- Whether the work is at height
- Any mould that needs treating
We don’t show prices on the website, because the cost depends so much on the job itself. For a quick quote, please ring 0345 464 0079 or send us an email.
Asking for a quote
To make quoting easier, let us know:
- Pictures of the joints, sent by email
- How we’d reach the joints
- How many joints, rooms or windows are involved
- The address or postcode of the job
If you are in Woodlands and need window mastic, ring 0345 464 0079 or send us an email. Tell us what the problem is and where, and you’ll get a clear quote before we start.
What we do, step by step
Once we’re on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. After that, the work takes anything from an hour or two to a full day, depending on how many frames there are. For a job in Woodlands, 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.
- We check each frame and agree which ones need doing.
- The old mastic is cut out and the surfaces cleaned back.
- Deep gaps are filled with backing rod to set the depth.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- Every joint is checked before we leave.
Before we arrive
- Mention any tricky access
- Let us know about parking restrictions
- Tell us about any water getting in
Getting a quote
For a quote, phone 0345 464 0079 or email us and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
Advice
Common problems we fix in Woodlands
On timber frames, paint and putty build up around the joint. Mastic painted over many times cracks with the paint, and timber moves with moisture as well as temperature.
Signs it’s time to call us include:
- Gaps left after new windows were fitted
- Old mastic that has gone black or come away
- Gaps where the sill meets the wall
- Damp patches on the reveal after heavy rain
As a London address, Woodlands can be tricky for parking: let us know about parking bays, permits or a driveway.
Before booking anyone
- Whether the sealant suits the joint
- The length of the guarantee
- What happens if they find a problem under the old sealant
- How the surfaces are prepared before sealing
Should I try it myself first?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
When it isn’t the sealant
To be straight with you, some problems need a different trade:
- Damp coming through the wall itself rather than the frame joint
- Draughts through the window seals rather than the frame
- A sash or casement that won’t close properly
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think before you book.
What we seal
- Patio & French doors
- Timber windows & doors
- Window sills
- Aluminium frames
- uPVC windows
- Composite doors
Nearby places to Woodlands
Other services in Woodlands
Aftercare tips
Simple care keeps the joints in good condition. We recommend:
- Look round the frames every year or so
- Avoid harsh chemicals near the mastic
- Keep paint and stain on wooden frames in good order
- Make sure the drainage slots are not blocked
On timber frames, keep the paintwork in good order, because bare, wet timber moves more and pulls at the joint. Keep paint off the silicone itself.
A small gap around a frame only grows. As old mastic keeps shrinking, the gap widens, and a cold room gets colder. Resealing closes it.
How the job changes by surface
Patio & French doors
The joints around patio doors run a long way, top, sides and threshold. Most leaks start at the bottom corners, so we pay close attention there.
uPVC windows
Fitters’ mastic on plastic frames is sometimes thin and rushed. We cut it out, back any deep gaps and reseal properly.
What window mastic looks like in Woodlands
Historic houses like Syon House (about 1.4 miles east) are a reminder that the area around Woodlands has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. In London conversions and blocks, the lease decides who is responsible for the frames, so it’s worth checking before booking.
Rented homes near Isleworth station change hands often, and renewing tired window mastic between tenants heads off draught and damp complaints. Schools such as Spring Grove Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Woodlands is about 2 miles north of Twickenham, in Greater London. Every kind of property in Woodlands is covered for window mastic. The work is guaranteed for a year. Our area takes in 764 places across Greater London, from the larger towns to small villages. We also work in London, about 11 miles from Woodlands.
All of TW7 and TW3 is within our area for window mastic. Streets in the area include Star Road, Pears Road and Unwin Road. Nearby, we also carry out window mastic in Hounslow (1 mile south-west), Isleworth (1 mile east), Spring Grove (1 mile north), Ivybridge (1 mile south) and Lampton (1 mile north-west). Larger places within reach include London (11 miles east), City of Westminster (9 miles east), Marylebone (9 miles east), Kensington (6 miles east), St Pancras (10 miles east) and Shoreditch (12 miles east).
What’s near Woodlands
We work in homes and buildings around Royal Military School of Music, Gumley House RC Convent School and The George Inn, among other places. Woodlands has its own railway station: Isleworth station. A little further out are Museum of Army Music (1.1 miles south) and Treaty Centre (1 mile west). For a walk, there’s Garden Lake and Long Wood.
FAQs for Woodlands
Can you do window mastic in Woodlands?
Yes, Woodlands is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or drop us an email and let us know what needs doing.
Do you work for landlords with property near Isleworth station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Do I need to be at home?
Access is agreed with you when the job is booked. Indoors, that generally means someone at home.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
Do you work on first-floor windows?
Yes, if safe access is possible. Higher or awkward frames may need extra access, and we’ll confirm what’s needed.
Can you do the inside joint as well?
Yes. Indoors, we seal between the frame and the plaster or reveal, using a paintable sealant if you want to decorate.
Will it make a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Is it worth trying it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.