Surrey · England
Sunnymeads Window Mastic
Mastic around window and door frames, sills and patio doors for householders, landlords and businesses in Sunnymeads. Fully insured, ARBOMaster approved and guaranteed for a year.
- Damp patches on the reveal after heavy rain
- White mastic on grey or black frames
- Cracked or shrunken mastic around the frame
Questions from Sunnymeads
Can you do window mastic in Sunnymeads?
Yes, Sunnymeads is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear price.
I let a flat near Sunnymeads station. Can you help?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before work begins.
Can you seal the gap between the frame and the plaster indoors?
Yes. The outside joint keeps the weather out, and the inside joint stops draughts and finishes the reveal. We do one or both.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
How long will my window job take?
Allow anything from an hour or two to a full day, depending on how many frames there are. Access and the amount of old mastic make the biggest difference.
Do you guarantee window mastic?
Yes. Every job comes with our 12-month guarantee, and we’re fully insured.
Do you work on first-floor windows?
Yes, as long as they can be reached safely. Let us know about access when you ask for a quote so we can plan the job.
Do you have sealant for grey or black windows?
Yes. We can use white, brown, anthracite grey, black or clear.
Window mastic in Sunnymeads
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. If you have draughty joints inside around the window and mastic that’s falling out in pieces, we can help, on uPVC windows, composite doors and window sills alike.
In a village or hamlet like Sunnymeads, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these do not always suit modern silicone, so the sealant has to be chosen to suit the building.
Each job carries a 12-month guarantee, large or small.
- Place
- Sunnymeads (TW19, SL4, SL3)
- Wider area
- Surrey
- Cover
- A year, on every job
- Quotes
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Keep jet washers away from the mastic
- Paint up to the joint, not over it
- Wipe condensation off the frames
- Look round the frames every year or so
Silicone can’t normally be painted, so mention any painting plans before any work starts. We can use a paintable sealant where that matters.
Water gets in quietly when mastic fails. You might not see it until plaster blows or a damp patch appears inside. Catching it early keeps the fix to a reseal.
Why deal with it now?
Resealing frames is a short job: the visit takes a morning for a couple of windows and a door. Wait for damp to appear and there may be plaster and decorating to sort out too. In a small place like Sunnymeads, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
What it costs depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before work begins, so you know where you stand.
Why choose Mr Mastic in Sunnymeads
- Sealant colour chosen to suit
- Old sealant always removed completely
- 180+ five-star Google reviews
- Anti-fungal sanitary silicone in wet areas
Take a look at how sealant jobs are priced or what customers say.
Nearby places to Sunnymeads
What else we do in Sunnymeads
What the job involves on each surface
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 is what we find.
Timber windows & doors
Older timber windows in stone or brick can suit sand mastic rather than modern sealant. We will tell you which suits your home.
Sunnymeads homes and the weather
With historic houses such as Frogmore House (about 1.6 miles west) nearby, there’s older building stock in the area around Sunnymeads 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. 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.
If you live in an older home near SS Peter and Andrew's Church, the joint between an old wall and a newer frame is usually the first place rain gets in. If you let a flat or house near Sunnymeads station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Sunnymeads is about 3 miles north of Egham, in Surrey. Wherever you are in the TW19 postcode area, our applicators can take on window mastic. Across Surrey, we cover 395 places, and Sunnymeads is one of them. You can also see our page for Reading, roughly 18 miles from Sunnymeads.
All of TW19, SL4 and SL3 is covered for window mastic, from the main roads to the quietest streets. Local streets include The Avenue, Park Avenue and Welley Road, and we cover them all. We also cover the places around Sunnymeads: Wraysbury (1 mile south), Horton (1 mile east), Old Windsor (1 mile south-west), Brands Hill (1 mile north-east) and Datchet (1 mile north-west). We also work in nearby towns such as Guildford (15 miles south), Woking (10 miles south), Camberley (12 miles south-west), Epsom (15 miles south-east), Ewell (15 miles south-east) and Egham (3 miles south).
Near you in Sunnymeads
Around Sunnymeads, our work takes us to homes and buildings near The Perserverance Public House, Arthur Jacob Nature Reserve and Churchmead School, among other places. Sunnymeads has its own railway station: Sunnymeads station. Well-known places in the area include Berkshire Yeomanry Museum (2.2 miles west) and Windsor Castle (2.2 miles north-west). Green spaces nearby include Staines Reservoirs.
Landlord and commercial work in Sunnymeads
Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
DIY sealant or a professional job?
A DIY attempt does not rule out a professional job. We cut it out and start again.
If you do try it yourself, take your time over the 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.
Signs you need window mastic in Sunnymeads
On timber frames, paint and putty build up around the joint. Mastic painted over many times cracks with the paint, and timber moves with moisture as well as temperature.
Common reasons people contact us are:
- Whistling draughts around closed windows
- Gaps left after new windows were fitted
- Gaps where the sill meets the wall
- Black, perished sealant on frames
If you look after a building such as Wraysbury Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Questions to ask before you book
- Which sealant they’ll use, and why
- How long to leave it before use
- How much experience the applicator has
- What happens if they find a problem under the old sealant
How it works
Once we are on site, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours for a handful of frames, longer for a whole house. In a small place like Sunnymeads, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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, 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.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Tell us about any water getting in
- Where the joints are inside, avoid wetting them before we arrive
How to get a quote
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we will talk you through the work.