Surrey · England
Shepperton Window Mastic
Window mastic in Shepperton from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Old mastic that has gone black or come away
- Hard, cracked sealant around windows
- Draughty joints inside around the window
Frames and glazing around Shepperton
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. With historic houses such as The Homewood (about 3.8 miles south-east) nearby, there’s older building stock in the area around Shepperton as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you let a flat or house near Shepperton station, renewing tired window mastic between tenants heads off draught and damp complaints. Homes close to Church of St Nicholas include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. If you look after a building such as Thamesmead School, the mastic around its windows and doors needs looking after like any other building’s.
Shepperton is about 1 mile north of Weybridge, in Surrey. Jobs in Shepperton get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Shepperton is one of 395 towns and villages in Surrey we cover. For nearby work, see our London page, about 17 miles away.
Every address in TW17 is within our area for window mastic, from the main roads to the quietest streets. That includes homes and businesses on High Street, Station Road and Manygate Lane and the roads around them. Main roads around Shepperton include the B3366, which makes travel easy. If you’re just outside Shepperton, we cover Weybridge (1 mile south), Walton-on-Thames (2 miles south-east), St George's Hill (2 miles south), Burwood Park (2 miles south) and Hersham (2 miles south-east). Within a short drive, we also cover Guildford (12 miles south-west), Woking (8 miles south-west), Camberley (13 miles west), Epsom (8 miles south-east), Ewell (9 miles east) and Egham (5 miles north-west).
Local landmarks in Shepperton
In Shepperton, that means homes and buildings near Sunbury Park, The Anchor pub and St Nicholas CofE Primary School, among other places. Shepperton has its own railway station: Shepperton station. A little further out are No. 2 New Zealand General Hospital (0.9 miles south-east) and Kempton Steam Museum (2.8 miles north-east). Not far away are Kempton Park Reservoirs and St Ann's Hill.
Window mastic in Shepperton, done properly
There are two joints on most windows. The external joint is the weather seal; inside, the joint between frame and plaster stops draughts and tidies the reveal. We seal one or both, depending on what’s needed. Common call-outs are for water coming in at the bottom corners of a door and gaps where the sill meets the wall, on composite doors, uPVC windows and aluminium frames.
In a smaller place like Shepperton, some walls face open ground and catch the full force of the weather. The mastic around frames on those walls tends to age faster.
All of our work is guaranteed for twelve months.
- Place
- Shepperton (TW17)
- Region
- Surrey
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
How it works
There isn’t much for you to do on the day. Show us the job and we’ll take it from there. The job generally takes anything from an hour or two to a full day, depending on how many frames there are, including the tidy-up. For a job in Shepperton, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We check each frame and agree which ones need doing.
- The old mastic is cut out and the surfaces cleaned back.
- Where gaps are deep, backing rod goes in first.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- We clear up and check every joint is fully closed.
Before we arrive
- Let us know about earlier repairs to the joints
- On commercial sites, let us know about site rules
- Keep children and pets away from the work area
Getting 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 get started, phone 0345 464 0079 or send us an email.
Advice
DIY sealant or a professional job?
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
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.
When something else is needed
It helps to know what we cannot do too:
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Worn gaskets, brush seals or a door that has dropped
- Damp coming through the wall itself rather than the frame joint
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly before booking.
Where we work in Shepperton
- Window sills
- Timber windows & doors
- Patio & French doors
- Aluminium frames
- Composite doors
- uPVC windows
What affects the quote in Shepperton
The price is agreed before any work begins. It’s based on:
- Any mould that needs treating
- The size of the job
- How many areas need sealing
- Access and height
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Helping us quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Photos by email, if that’s easy
- Roughly how big the job is
- Any access issues, like height or stairs
- If someone has resealed it before
We quote each job on its own. Just ring 0345 464 0079 or send us an email with the details and send pictures if you have them.
What the job involves on each surface
Timber windows & doors
Older timber windows in stone or brick can suit sand mastic rather than modern sealant. We’ll tell you which suits your home.
Composite doors
Draughts round the door leaf usually come from worn seals or adjustment, not the mastic. We’ll tell you if that is what we find.
Landlords, agents and businesses in Shepperton
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Your questions about window mastic in Shepperton
Is Shepperton in your area for window mastic?
Yes. Our work covers London and the South East, and Shepperton is part of that. Just ring 0345 464 0079 or send us an email with a few details of the job.
Do you cover smaller places like Shepperton?
Yes, Shepperton is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can resealing stop a draught around my window?
If the draught is coming in around the frame, yes. If it’s coming through the window seals, we will tell you.
How long before the joint can be used?
It depends on the product. Before we leave, we will tell you the cure time.
Do you take out the old sealant first?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
How do I get a quote for window mastic in Shepperton?
Every job is different, so each one gets its own quote. To get one, phone 0345 464 0079 or drop us an email with a short description of the job.
Is it worth trying it myself?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Places near Shepperton
Other services in Shepperton
Why it’s worth doing now in Shepperton
Not every sealant suits a window. Interior caulk and bathroom silicone are not made for exterior frame joints. A low-modulus exterior sealant keeps its stretch through hot and cold weather. In an older home around Shepperton, damp from a failed joint can get into timber and plaster, and that is a much bigger job than renewing the sealant.
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs. Call for a quick quote and we will go through it with you.
Why choose Mr Mastic in Shepperton
- White, clear, grey or coloured to suit, where the product allows
- Every job guaranteed for a year
- Old sealant always removed completely
- 20+ years of sealant experience