Surrey · England
Window & door mastic in Charlton, Surrey
We cover Charlton for mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly.
- Leaking joints at the ends of sills
- Whistling draughts around closed windows
- White mastic on grey or black frames
Window mastic in Charlton
From a single sill to a whole house of windows, the work is priced before anything is done. Just ring 0345 464 0079 or drop us an email and tell us how many frames there are and how they’re reached. If you’re dealing with cracked or shrunken mastic around the frame and gaps where the sill meets the wall, we can put it right, on aluminium frames, composite doors and window sills alike.
Outdoor sealant needs dry, clean surfaces, so work on frames around Charlton is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.
- Where
- Charlton (TW17)
- Region
- Surrey
- Cover
- One year on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Work for landlords, hotels and businesses
For anyone letting property in or around Charlton, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs, and photos by email help.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
What affects the cost of window mastic
Your quote is based on your job. We take into account:
- The old material and how stubborn it is
- The amount of work
- When we can work, for business premises
- The product the joint needs
Combining jobs into one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We will send you a clear quote for the lot.
What we need to know
Photos help, but a description is a good start. Try to tell us:
- How we’d reach the joints
- A few photos by email, if you can
- If it’s domestic, commercial or a hotel
- How many joints, rooms or windows are involved
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. Whenever you are ready, call 0345 464 0079 or drop us an email.
Window mastic in Charlton: local notes
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Hampton Court Palace (about 4.6 miles east) are a reminder that the area around Charlton 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.
Letting a property close to Upper Halliford station? Then renewing tired window mastic between tenants heads off draught and damp complaints. Managing a site like Littleton CofE Infant School? Then its window and door frames need their mastic kept sound, just like a home’s. In the older streets around Church of St Mary Magdalene, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Charlton is about 1 mile west of Sunbury-on-Thames, in Surrey. Jobs in Charlton get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. 395 places in Surrey are on our list, large and small. There’s also a page for London, roughly 16 miles from Charlton.
Here we cover the TW17 postcode area for window mastic. If you need window mastic at a property on Lodge Way, Charlton Road and Hetherington Road or a nearby road, we can help. If you are just outside Charlton, we cover Littleton Common (1 mile north), Upper Halliford (1 mile south-east), Ashford Common (1 mile north), Shepperton Green (1 mile south-west) and Littleton (1 mile west). Within a short drive, we also cover Guildford (13 miles south-west), Woking (9 miles south-west), Camberley (13 miles south-west), Epsom (9 miles south-east), Ewell (9 miles south-east) and Egham (5 miles west).
What’s near Charlton
Locally, jobs take us to homes and businesses close to Sunbury Manor School, The Bishop Wand Church of England School and Sunbury Park and the streets around them. The closest station to Charlton is Upper Halliford station, about 0.6 miles east of the centre. Well-known places in the area include Kempton Steam Museum (2 miles north-east) and No. 2 New Zealand General Hospital (1.9 miles south-east). Green spaces nearby include St Ann's Hill and Ferris Meadow Lake.
When it is not the sealant
New sealant can’t fix everything, and we’d rather say so up front. Sealant will not put right:
- A frame that has rotted at the joint
- Penetrating damp from a failed cavity tray or render
- Worn gaskets, brush seals or a door that has dropped
Not sure which it is? You can call 0345 464 0079 or drop us an email and we will tell you honestly before you book.
What we seal
- Window sills
- Aluminium frames
- uPVC windows
- Timber windows & doors
- Patio & French doors
- Composite doors
Leave it or put it right?
Redecorating is a good moment to renew the mastic. Fresh joints finish the job neatly, and it’s easier while the walls are being worked on anyway. Around Charlton, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
Why Charlton clients choose us
- Every job guaranteed for a year
- Old sealant always removed completely
- Tidy, careful work
- Approved under the ARBOMaster scheme
Read our cost guide or what customers say.
Questions from Charlton
Do you cover Charlton for window mastic?
Yes. Our work covers London and the South East, and Charlton is part of that. You can call 0345 464 0079 or email us and let us know what needs doing.
Can you help a landlord with a rental near Upper Halliford station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before any work starts.
Will resealing my frames help with draughts?
It will if the frame joint is the problem. We find where the air is coming from before we reseal.
Is there any odour?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
Can you seal over the old sealant?
No, because it fails. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
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.
Do you have sealant for grey or black windows?
Yes, in most cases. Tell us the frame colour when you get in touch and we will match it as closely as we can.
How long will my window job take?
Allow a few hours for a few frames, or a day or more for a whole house. Access and how stubborn the old mastic is affect the time most.
What the job involves on each surface
Window sills
Masonry sills can have joints where water gets in, including the one between the sill and the frame above. Those are sealed with a product suited to stone or concrete.
uPVC windows
Plastic frames move a lot between a hot afternoon and a cold night, so we use a flexible, low-modulus sealant. White is the usual colour, with brown, anthracite grey and black for coloured frames.
How it works
There’s no need to move everything out before we come, just the space around the work. We protect the rest, and the work takes most of a day for a typical house, less for a few frames in most cases. Somewhere as small as Charlton, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check how each frame can be reached safely.
- All the failed sealant is cut away, along with any loose debris.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
Getting ready for the visit
- Mention if the joints have been sealed before
- Let us know about parking restrictions
- Tell us about any water getting in
Get a quote
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or email us.
Advice
DIY versus a professional finish
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.