Windsor and Maidenhead · England
Window & door mastic in Winkfield Street, Windsor and Maidenhead
Mastic around window and door frames, sills and patio doors for Winkfield Street, backed by a one-year guarantee. Call for a quick quote.
- Draughty joints inside around the window
- Rushed sealant from a window installation
- Mastic that’s falling out in pieces
Window mastic in Winkfield Street, done properly
Mr Mastic’s applicators have more than 20 years’ experience with window and door sealants. We are ARBOMaster approved and fully insured, and we give a one-year guarantee on the work. If you are dealing with untidy mastic left by window fitters and damp patches on the reveal after heavy rain, we can help, on patio & French doors, timber windows & doors and uPVC windows alike.
Mastic can only go onto a dry, clean joint, so window work in Winkfield Street is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
The work is covered for a year after we finish. If there’s a problem with it, please call 0345 464 0079 or send us an email.
- Location
- Winkfield Street (SL4)
- Wider area
- Windsor and Maidenhead
- Cover
- 12 months on all our work
- Quote
- A clear price before we start
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
When it isn’t the sealant
In fairness, some problems need a different trade:
- Condensation trapped between the panes
- Damp problems in the wall away from the window
- Broken hinges, locks or handles
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think before you book.
Surfaces we seal
- Patio & French doors
- Timber windows & doors
- uPVC windows
- Composite doors
- Aluminium frames
- Window sills
Should I try it myself first?
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.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
Frames and glazing around Winkfield Street
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as St Leonard's Hill (about 2.8 miles north-east) nearby, there’s older building stock in the area around Winkfield Street 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.
For an older house near a landmark such as Church of St Mary, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Letting a property close to Martins Heron station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Winkfield Street is about 3 miles north-east of Bracknell, in Windsor and Maidenhead. Our applicators cover window mastic for homes and businesses in Winkfield Street and nearby, as part of our work across Windsor and Maidenhead. Our area takes in 57 places across Windsor and Maidenhead, large and small. You can also see our page for Reading, roughly 12 miles from Winkfield Street.
Here we cover the SL4 postcode area for window mastic. If you need window mastic at a property on Winkfield Street and Winkfield Lane or anywhere close by, our applicators can take on the job. We also cover Maiden's Green (1 mile south-west), Brockhill (1 mile south-west), Nuptown (1 mile north-west), Warfield (1 mile west) and Winkfield Row (1 mile south). Further out, we also cover Maidenhead (5 miles north), Windsor (4 miles north-east), Boyn Hill (5 miles north), Cookham (8 miles north), Furze Platt (6 miles north) and Dedworth (3 miles north-east).
Local landmarks in Winkfield Street
We work in homes and buildings around The Winning Post pub and Winkfield St Mary's CofE Primary School. Winkfield Street’s nearest station is Martins Heron station, about 2.8 miles south of the centre. Other landmarks nearby include Heatherwood Hospital (2.6 miles south) and The Lexicon (2.8 miles south-west). Open spaces near Winkfield Street include Bray Pit.
Also near Winkfield Street
Also in Winkfield Street
What we do, step by step
We bring everything the job needs with us, so you do not need to buy or prepare anything. Once we’ve agreed what’s being done, the area is protected and the work begins. It normally takes a morning for a couple of windows and a door. In a small place like Winkfield Street, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check how each frame can be reached safely.
- All the failed sealant is cut away.
- Frame and wall are cleaned and must be dry before sealing, and primed where the sealant calls for it.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Let us know if you’ve seen damp or leaks
- Clear items away from the joints we’re working on
Ask for a quote
Asking for a quote is easy: let us know the job and the location and its rough size. A few pictures by email make the job easier to understand, and we’ll come back to you with a quote.
Read more
Leave it or put it right?
Not every sealant suits a window. Decorators’ caulk and bathroom silicone aren’t designed for outside joints that move. A low-modulus exterior sealant keeps its stretch through hot and cold weather. Older cottages and farmhouses around Winkfield Street can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we’ll go through it with you.
Why us?
- White, clear, grey or coloured to suit, where the product allows
- Experience in homes, commercial sites and hotels
- A sealant colour to suit the surroundings
- Fully insured
Take a look at how sealant jobs are priced and customer reviews.
Surface by surface
Timber windows & doors
On period timber windows, traditional sand mastic is sometimes the better choice. We can talk through the options.
Composite doors
Composite doors are normally hung in an uPVC-type frame, so its perimeter joint is sealed much like a window. The bead is colour-matched to the frame.
How we quote for window mastic
We do not publish a price list. The quote depends on:
- The number and length of the joints
- The product the joint needs
- How many rooms, windows or areas are involved
- Whether there’s mould to deal with
We don’t show prices on the website, because each job is priced on what it involves. For a quick quote, please phone 0345 464 0079 or drop us an email and we’ll talk you through it.
Helping us quote
Before you ask for a quote, have a think about:
- How we’d reach the joints
- Where the property is
- A few pictures by email, if you can
- The problem you’ve noticed
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that’s easy.
Questions from Winkfield Street
Can you do window mastic in Winkfield Street?
Yes. We work across London and the South East, and Winkfield Street is part of that. Just phone 0345 464 0079 or send us an email with a few details of the job.
Do you cover smaller places like Winkfield Street?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you seal inside as well as outside?
Yes. The outside joint keeps the weather out, and the inside joint stops draughts and finishes the reveal. We can do either or both.
How long will my window job take?
Allow a morning for a couple of windows and a door. Access and the amount of old mastic make the biggest difference.
Are you insured?
Yes. We are fully insured, and we can confirm the details when we quote.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
Can I add another job to the visit?
Yes. Tell us about everything you’d like done and we will quote it together.
Do I need to be at home?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Work for landlords, hotels and businesses
In hotels, rooms out of use cost money, 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.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.