Surrey · England
Window Mastic in East Horsley
Mastic around window and door frames, sills and patio doors for homes and businesses in East Horsley and across Surrey. Fully insured, ARBOMaster approved and guaranteed for a year.
- Draughts coming in around windows and doors
- Rushed sealant from a window installation
- Draughty joints inside around the window
Looking after it afterwards
Looking after new joints is easy, and it makes a real difference:
- Do not aim a pressure washer at the joints
- Air rooms to keep condensation down around windows
- Keep timber frames painted
- Keep paint off silicone joints
Timber frames need their paint kept up, since wood that gets wet swells and shrinks more. Paint up to the joint, not over the silicone.
On timber windows, water behind the joint can lead to rot. Once wood has rotted, it needs repair before it can be sealed, so early resealing is worth it.
About our window mastic in East Horsley
Every window and door frame has a gap around it, and mastic is what closes it. 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. Common call-outs are for cracked or shrunken mastic around the frame and rushed sealant from a window installation, on timber windows & doors, aluminium frames and window sills.
Homes around East Horsley range from older properties to newer houses, and their windows range just as widely. The right sealant depends on the frame and on what it sits in.
All our work comes with our 12-month guarantee.
- Place
- East Horsley (KT24, KT11)
- Region
- Surrey
- Guarantee
- One year on every job
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Windows and doors in East Horsley
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Hatchlands Park (about 2.3 miles south-west) are a reminder that the area around East Horsley 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.
If you let a flat or house near Horsley station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. Homes close to Church of St Martin include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
East Horsley is about 5 miles west of Leatherhead, in Surrey. Whether you’re in the middle of East Horsley or further out, window mastic is available for homes and businesses alike. Across Surrey, we cover 395 places, and East Horsley is one of them. For nearby work, see our Crawley page.
All of KT24 and KT11 is within our area for window mastic. That includes homes and businesses on Glendene Avenue, Cobham Way and High Park Avenue. We also cover the places around East Horsley: West Horsley (1 mile west), Effingham (1 mile east), Ockham (2 miles north-west), East Clandon (3 miles south-west) and Ripley (3 miles north-west). Larger places within reach include Guildford (7 miles west), Woking (7 miles north-west), Camberley (13 miles west), Epsom (8 miles north-east), Horley (13 miles south-east) and Redhill (12 miles east).
Local landmarks in East Horsley
Around East Horsley, our work takes us to homes and buildings near Howard of Effingham School, The Forest and the Highlands and Duke Of Wellington Public House, among other places. East Horsley has its own railway station: Horsley station. A little further out are Send and Ripley History Society Museum (3.2 miles north-west). The countryside around East Horsley includes Papercourt Marshes and Boldermere Lake.
Signs you need window mastic in East Horsley
Every frame moves through the day. A plastic or aluminium frame lengthens in sunshine and shortens as it cools, while the brick or render around it hardly moves. A sealant that can’t keep up eventually tears.
Signs it’s time to call us include:
- Black, perished sealant on frames
- White mastic on grey or black frames
- Rain getting in at the frame or under the sill
- Gaps left after new windows were fitted
Schools such as The Raleigh School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Before you book anyone
- Whether the sealant suits the joint
- What preparation is included
- What happens if the job turns out different
- Whether you can choose the colour
For landlords and businesses
If you manage several properties in or around East Horsley, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
How the job changes by surface
Timber windows & doors
Soft or rotten wood cannot be sealed successfully. If we find rot, we will tell you before going ahead, as that is a job for a joiner.
Window sills
Every drop off the glass ends up on the sill, so the joints at each end and underneath matter. They’re cut out and resealed with exterior sealant.
Common questions in East Horsley
Do you cover East Horsley for window mastic?
Yes. Our work covers London and the South East, and East Horsley is part of that. You can call 0345 464 0079 or drop us an email and tell us what needs doing, and we’ll give you a clear price.
Is East Horsley within the area you cover?
Yes, East Horsley is covered. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Do you guarantee window mastic?
Yes. All our work carries a 12-month guarantee, and we are ARBOMaster approved applicators.
Can you do the inside joint as well?
Yes, we do both. Indoors, we seal between the frame and the plaster or reveal, using a paintable sealant if you want to decorate.
Can you reach windows above the ground floor?
Yes, in most cases. Access is planned before work begins.
Can new sealant go over the old?
No. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
Will the old sealant be removed?
Always. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Will new mastic stop draughts?
If the draught is coming in around the frame, yes. If it’s coming through the window seals, we will tell you.
DIY versus a professional finish
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Places near East Horsley
What else we do in East Horsley
What happens on the day
Every visit runs the same way: we check the joints, mask and protect the surrounding surfaces, carry out the job and clear up. It usually takes a few hours for a few frames, or a day or more for a whole house. A visit to East Horsley is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- First we look at every frame and agree the list.
- We remove the old mastic and clean the frame and the wall.
- We fit backing rod in deep gaps so the sealant is the right depth.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- We clear up and check every joint is fully closed.
How to prepare
- Mention any parking rules near the property
- Tell us about any previous sealing or DIY attempts
- Mention any tricky access
How to get a quote
For a quote, phone 0345 464 0079 or email us with the location and a short description of the problem. We’ll give you a clear price before any work starts.
Related advice
What we cannot put right
We’d rather tell you now than do work that won’t last, so here’s what sealant cannot put right:
- Broken hinges, locks or handles
- Draughts through the window seals rather than the frame
- A frame that has rotted at the joint
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly.
Where we work in East Horsley
- Window sills
- Composite doors
- uPVC windows
- Patio & French doors
- Aluminium frames
- Timber windows & doors