Surrey · England
Window & door mastic in Staines-upon-Thames, Surrey
Professional window mastic in and around Staines-upon-Thames, with old sealant always removed completely.
- Cracked sealant at the sill ends
- Draughty joints inside around the window
- Rain getting in at the frame or under the sill
How we handle window mastic in Staines-upon-Thames
The mastic around a window or door seals the gap between the frame and the wall. When it cracks, hardens or pulls away, draughts and rain get in. The old mastic is removed and the joint resealed with a flexible exterior sealant. We work on window sills, timber windows & doors and composite doors, and the jobs we see most are mastic that’s falling out in pieces and gaps left after new windows were fitted.
In a town like Staines-upon-Thames, the windows on the most exposed side of a house take the brunt of the rain, and that’s normally where the sealant gives up first. Checking every frame, not just the obvious one, is time well spent.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Location
- Staines-upon-Thames (TW18, TW20, TW19)
- Wider area
- Surrey
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Should I try it myself first?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Towns and villages near Staines-upon-Thames
More services for Staines-upon-Thames
Quotes for window mastic in Staines-upon-Thames
The quote reflects the job in front of us. We take into account:
- How many areas need sealing
- The product the joint needs
- Whether the work is at height
- Any mould that needs treating
Some things make a job bigger or smaller: 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.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Pictures of the joints, sent by email
- Whether it’s a home or a business
- Any previous sealing or DIY work
- Roughly how big the job is
Every job is quoted individually. Simply call 0345 464 0079 or drop us an email and describe the job.
Staines-upon-Thames questions
Is Staines-upon-Thames in your area for window mastic?
Yes. Our work covers London and the South East, and Staines-upon-Thames is part of that. Just phone 0345 464 0079 or email us with a few details of the job, and we will give you a clear quote.
Do you work for landlords with property near Staines station?
Yes. We work for landlords and agents as well as homeowners. Just ring 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear price.
Will resealing my frames help with draughts?
Yes, where the draught is at the frame edge. We check where the draught is before we start.
Do you work on first-floor windows?
Yes, as long as they can be reached safely. Tell us about access when you get in touch so we can plan the job.
How long will my window job take?
Allow most of a day for a typical house, less for a few frames. Access and how stubborn the old mastic is affect the time most.
Will you leave a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
Can you work on commercial sites?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. We can talk about working times when we quote.
What information do you need?
Just the basics: where it is, what you’ve noticed and how we reach it. After that, simply phone 0345 464 0079 or send us an email.
Windows and doors in Staines-upon-Thames
Historic houses like Botleys Mansion (about 4 miles south) are a reminder that the area around Staines-upon-Thames has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. 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.
For site and facilities teams at buildings such as Riverbridge Primary School, larger buildings have plenty of frames, and the mastic around each one ages. If you live in an older home near Church of St Peter, the joint between an old wall and a newer frame is usually the first place rain gets in.
Staines-upon-Thames is about 7 miles south-west of Hayes, in Surrey. For window mastic in and around Staines-upon-Thames, please call 0345 464 0079 or email us for a quick quote. We cover Surrey from our Crawley base, Staines-upon-Thames included. Across Surrey, we cover 395 places, Staines-upon-Thames among them. London is on our list too, around 18 miles away.
Jobs for window mastic in TW18, TW20 and TW19 works the same way as everywhere else we cover. If you need window mastic at a property on High Street, Goring's Square and London Road or a nearby road, our applicators can take on the job. Main roads around Staines-upon-Thames include the A308 and A320. Close by, we work in Egham Hythe (1 mile south-west), Penton Hook (2 miles south), Hythe End (2 miles north-west), Egham (2 miles west) and Thorpe (2 miles south-west). Further out, we also cover Guildford (13 miles south), Woking (8 miles south), Camberley (12 miles south-west), Epsom (12 miles south-east), Ewell (12 miles south-east) and Walton-on-Thames (5 miles south-east).
Near you in Staines-upon-Thames
Typical jobs here are in homes near The Star pub, Penton Park and The Magna Carta School, among other places. There’s a railway station in Staines-upon-Thames itself: Staines station. Other landmarks nearby include Ashford Hospital (1.8 miles north-east) and Spelthorne Museum (0.5 miles north-west). The countryside around Staines-upon-Thames includes Staines Reservoirs and Kempton Park Reservoirs.
Do you need window mastic in Staines-upon-Thames?
Some failures date back to when the windows were fitted. Sealant run over dust, wet brick or loose mortar never bonded as it should, and it lets go sooner than it should.
The problems people usually mention when they call include:
- Cracked sealant at the sill ends
- Damp patches on the reveal after heavy rain
- Untidy mastic left by window fitters
- Mastic that’s falling out in pieces
Rented homes near Staines station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
What your quote should include
- How the colour is chosen
- Who turns up on the day
- How the joint is cleaned and prepared
- How long to leave it before use
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.
Composite doors
If the door itself is draughty, the issue may be the door seals or hinges rather than the frame mastic. We will tell you if that’s what we find.
Looking after it afterwards
Aftercare is simple, and it makes a real difference:
- Don’t paint over the silicone
- Keep paint and stain on wooden frames in good order
- Wash the frames with mild soapy water
- Keep jet washers away from the mastic
Keep sill grooves and drainage slots clear, so water can run away instead of sitting against the joint.
Signs to watch for: split or missing mastic, gaps, damp patches inside or black mould on the reveal. If you notice one, it’s time to get the joint looked at.
How it works
On the day, there’s very little for you to do. Show us the job and we will take it from there. The work itself takes anything from an hour or two to a full day, depending on how many frames there are. For a job in Staines-upon-Thames, we need access to where the work is and somewhere nearby to park. For outside work, let us know about side access, gates and any upper-floor joints.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely, along with any loose debris.
- The surfaces are cleaned and left dry.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
How to prepare
- Mention any sign-in or site rules at work premises
- Tell us about any water getting in
- Clear the area around the work
Get a quote
Call for a quick quote, or email us if that is easier. Describe what needs sealing and we’ll explain what’s involved before giving you a price.
Advice
Honest limits
To be straight with you, there are a few things sealant won’t fix:
- A sash or casement that won’t close properly
- A door that needs adjusting, rehanging or new seals
- Damp coming through the wall itself rather than the frame joint
If you’re not sure, just ring 0345 464 0079 or email us and we’ll give you a straight answer before booking.
Joints and surfaces we work on
- Aluminium frames
- Composite doors
- uPVC windows
- Window sills
- Patio & French doors
- Timber windows & doors