Windsor and Maidenhead · England
Boyn Hill Window Mastic
Window mastic in Boyn Hill from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Cold air getting in at the frame edge
- A bead that does not match the frame
- Cracked internal joints between frame and plaster
Should I try it myself first?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
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 fails, we can still redo it.
About our window mastic in Boyn Hill
A cold draught around a closed window often comes from the frame edge. A new joint stops the air getting through. If the draught is through the window seals instead, we will tell you. If you are dealing with cracked internal joints between frame and plaster and rushed sealant from a window installation, we can put it right, on timber windows & doors, window sills and composite doors alike.
Homes around Boyn Hill 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 a one-year guarantee.
- Place
- Boyn Hill (SL6)
- Region
- Windsor and Maidenhead
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What window mastic looks like in Boyn Hill
Historic houses like Dorney Court (about 3.1 miles east) are a reminder that the area around Boyn Hill 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. 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.
If you live in an older home near All Saints' Church, the joint between an old wall and a newer frame is generally the first place rain gets in. If you let a flat or house near Maidenhead station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Boyn Hill is about 1 mile south-west of Maidenhead, in Windsor and Maidenhead. Every kind of property in Boyn Hill can book us for window mastic, old or new, large or small. Every job comes with our 12-month guarantee. Across Windsor and Maidenhead, we cover 57 places, Boyn Hill among them. We also work in Reading, around 11 miles away.
We work across SL6 for window mastic and the streets around it. That includes homes and businesses on Lock Lane, Ross Road and Curls Road. Boyn Hill sits on or near the A404(M), which makes travel easy. Other places close to Boyn Hill include Cox Green (1 mile south-west), Maidenhead (1 mile north-east), Bray Wick (1 mile south-east), Woolley Green (1 mile west) and Pinkneys Green (2 miles north-west). Further out, we also cover Windsor (5 miles south-east), North Ascot (7 miles south), Cookham (3 miles north), Dedworth (5 miles south-east), Broomhall (9 miles south-east) and South Ascot (8 miles south). Boyn Hill is among the bigger towns we cover in Windsor and Maidenhead.
Local landmarks in Boyn Hill
Typical jobs here are in homes near Ockwells Park, Altwood CofE Secondary School and The Crown pub, among other places. The closest station to Boyn Hill is Maidenhead station, roughly 1 mile north-east of the centre. Other landmarks nearby include The Reitlinger Bequest Museum (1.8 miles north-east) and St Mark's Hospital (1 mile north). Open spaces near Boyn Hill include Weycock Hill and The Gullet Local Nature Reserve.
When to call us in Boyn Hill
Every frame moves through the day. A plastic or aluminium frame lengthens in sunshine and shortens as it cools, while the masonry beside it stays put. A sealant that can’t keep up eventually tears.
Signs it’s time to call us include:
- Draughts coming in around windows and doors
- Untidy mastic left by window fitters
- Cracked sealant at the sill ends
- A bead that doesn’t match the frame
Managing a site like Larchfield Primary and Nursery School? Then larger buildings have plenty of frames, and the mastic around each one ages.
What to look for in a quote
- What product goes in the joint
- What happens if the job turns out different
- How long to leave it before use
- How much experience the applicator has
When something else is needed
We’d rather tell you now than do work that will not last, so here’s what sealant can’t put right:
- A frame that has rotted at the joint
- Condensation trapped between the panes
- Broken hinges, locks or handles
If in doubt, phone 0345 464 0079 or send us an email and we’ll say what we think before you book.
Where we work in Boyn Hill
- Patio & French doors
- Window sills
- Composite doors
- Aluminium frames
- Timber windows & doors
- uPVC windows
For landlords and businesses
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
Nearby places to Boyn Hill
Other services in Boyn Hill
Boyn Hill questions
Will you come out to Boyn Hill?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
I let a flat near Maidenhead station. Can you help?
Yes, landlords and agents are among the people we work for. You can ring 0345 464 0079 or email us with the details for a clear quote.
What should I tell you?
Let us know what needs doing and where, with pictures by email if possible. We’ll ask anything else we need to know.
Are you insured?
Yes. We are fully insured, with over 20 years’ experience in sealant work.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We’ll tell you what we are using and why.
Can you quote for more than one area?
Yes. More than one area can go on one quote.
Do I need to be at home?
Access is agreed with you when the job is booked. Indoors, that usually means someone at home.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
How the visit works
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The work itself takes a few hours for a handful of frames, longer for a whole house from start to finish. For a job in Boyn Hill, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- Each frame is looked over and we agree which ones need resealing.
- We remove the old mastic and clean the frame edge and wall.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Move anything stored near the joints
- On commercial sites, let us know about site rules
Getting a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. Whenever you’re ready, phone 0345 464 0079 or send us an email.
Advice
Quotes for window mastic in Boyn Hill
You’ll get a clear quote before any work starts. It takes into account:
- The old material and how stubborn it is
- Working hours on commercial sites
- The size of the job
- How many rooms, windows or areas are involved
A failed joint rarely gets cheaper to fix by waiting. If you’re not sure whether it needs doing, ring 0345 464 0079 or email us for an honest opinion and a quote.
What we need to know
There’s no need for technical detail. Just tell us:
- Whether it’s a home or a business
- Where the job is, and your postcode
- Whether it has been sealed before
- What the problem is, such as mould, gaps, leaks or cracking
We quote each job on its own. Just call 0345 464 0079 or email us with the details.
Surface by surface
Window sills
The end joints of a sill tend to fail before the rest. A tight seal at each end keeps rain out of the wall.
Composite doors
Composite doors are normally hung in an uPVC-type frame, and the joint around it is sealed like a window. We match the colour to the frame.