Surrey · England
Window Mastic in Leatherhead
We cover Leatherhead for mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly.
- Draughty joints inside around the window
- Sealant in the wrong colour for the frame
- Damp patches on the reveal after heavy rain
About our window mastic in Leatherhead
Around Leatherhead we seal all kinds of frames: uPVC, aluminium, timber and composite, plus patio doors, French doors and sills. Each gets a sealant chosen for the frame and the wall it meets. We work on uPVC windows, timber windows & doors and patio & French doors, and people most often call us about rain getting in at the frame or under the sill and cracked sealant at the sill ends.
Around Leatherhead, many houses have gained conservatories, French doors or replacement windows over time. Each one adds more joints to look after, and those joints age at different rates. Sills, frame heads and glazing joints are where leaks usually start.
The work is covered for a year after we finish. If there’s a problem with it, please ring 0345 464 0079 or drop us an email.
- Location
- Leatherhead (KT22)
- Wider area
- Surrey
- Cover
- 12 months on all our work
- Quote
- A clear price before we start
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Quotes for window mastic in Leatherhead
We quote each job individually. These are the things that affect it:
- The old material and how stubborn it is
- Any working-time requirements on site
- Any mould that needs treating
- The size of the job
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 the work is at height. Your quote takes all of that into account.
Asking for a quote
What to tell us when you ask for a quote:
- The type of property
- The address or postcode of the job
- Photos by email, if that is easy
- Whether it has been sealed before
Want a quote for window mastic? Please call 0345 464 0079 or send us an email and tell us about the job. We will explain what we’d do and send you a clear quote before any work starts.
What we are called out for in Leatherhead
Mastic ages in the weather. Sunlight dries the surface out, and over the years it loses its give, cracks and comes away.
These are the problems we are asked about most:
- Damp patches on the reveal after heavy rain
- Gaps between the frame and the inside reveal
- Untidy mastic left by window fitters
- Whistling draughts around closed windows
If you look after a building such as Leatherhead Trinity School and Children's Centre, its window and door frames need their mastic kept sound, just like a home’s.
Before booking anyone
- What guarantee comes with the work
- Which colour the sealant will be
- Which sealant they’ll use, and why
- Whether they’re fully insured
What we cannot put right
We will always be straight with you, so here’s what new sealant will not do:
- A sash or casement that won’t close properly
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Worn gaskets, brush seals or a door that has dropped
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly.
Surfaces we seal
- Aluminium frames
- uPVC windows
- Patio & French doors
- Timber windows & doors
- Composite doors
- Window sills
Can I do it myself?
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
How it works
We keep the work tidy and contained to the joints we’re treating, so you can get on with your day. Expect the work to take a morning for a couple of windows and a door, and we tell you how long to leave it before we go. In Leatherhead, parking is rarely complicated, though it helps to know about driveways or restrictions, and mention if the work is upstairs, in a flat or high on the outside.
- We start by checking each window and door with you.
- Next the failed sealant is cut away and the joint cleaned.
- We fit backing rod in deep gaps so the sealant is the right depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- We clear up and check every joint is fully closed.
Before we arrive
- Mention any tricky access
- On commercial sites, let us know about site rules
- Let us know about earlier repairs to the joints
How to get a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved before giving you a price.
Read more
Leatherhead: your questions answered
Do you cover Leatherhead for window mastic?
Yes, Leatherhead is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or email us and tell us what needs doing.
Do you work for landlords with property near Leatherhead station?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before we start.
Can you quote for more than one area?
Yes. More than one area can be quoted together.
Can you do the inside joint as well?
Yes. Plenty of draughts come through the inside joint as well as the outside, so it can be worth sealing both.
Do you have sealant for grey or black windows?
Yes, we choose a colour to suit the frame. Grey and black frames get grey or black sealant, and wood-effect frames usually suit brown.
Are you fully insured?
Yes. We’re fully insured for domestic and commercial work.
Do the sealants smell?
Some sealants have a smell while they cure. Opening a window helps.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint before applying anything new.
Landlords, agents and businesses in Leatherhead
Hotels need rooms back in use, so the work can be planned room by room. We have worked in hotels as well as homes and businesses.
Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.
Frames and glazing around Leatherhead
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Polesden Lacey (about 3.4 miles south-west) are a reminder that the area around Leatherhead has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
Letting a property close to Leatherhead station? Then sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. If you live in an older home near Church of Our Lady and St Peter, the joint between an old wall and a newer frame is normally the first place rain gets in.
Leatherhead is about 4 miles south-west of Epsom, in Surrey. Whether you are in the middle of Leatherhead or further out, we cover window mastic for every kind of property, from flats and houses to offices and hotels. Our area takes in 395 places across Surrey, large and small. Crawley is on our list too, about 14 miles from Leatherhead.
All of KT22 is covered for window mastic. Window mastic is available to properties on High Street, Church Road and Station Road. With the A24 and A245 close by, Leatherhead is simple for us to get to for window mastic. Neighbouring places we cover for window mastic include Fetcham (1 mile west), Mickleham (2 miles south), Great Bookham (2 miles south-west), Westhumble (3 miles south) and Little Bookham (3 miles south-west). Further out, we also cover Guildford (11 miles west), Woking (11 miles west), Epsom (4 miles north-east), Horley (11 miles south-east), Redhill (8 miles south-east) and Ewell (5 miles north-east).
What’s near Leatherhead
Typical jobs here are in homes near St Andrew's Catholic School, St Andrew's Catholic School and Duke's Head Public House and the streets around them. There’s a railway station in Leatherhead itself: Leatherhead station. Well-known places in the area include Walton on the Hill (3.5 miles east) and Headley Court (2.2 miles east). For a walk, there’s Claremont Lake and Jubilee Wood.
Places near Leatherhead
What else we do in Leatherhead
What the job involves on each surface
Patio & French doors
Not every patio door leak is a mastic problem: blocked drain slots, worn brush seals and threshold details can let water in too. We check before we reseal.
Timber windows & doors
Soft or rotten wood cannot be sealed successfully. If we find rot, we’ll tell you before going ahead, as that’s a job for a joiner.