Windsor and Maidenhead · England
Window & door mastic in Brookside, Windsor and Maidenhead
Window mastic for Brookside, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Rushed sealant from a window installation
- Gaps where the sill meets the wall
- Hard, cracked sealant around windows
How we handle window mastic in Brookside
Colour matters on a frame. We can seal in white, brown, anthracite grey, black or clear, so the line suits the frame instead of standing out. If you have cold air getting in at the frame edge and leaking joints at the ends of sills, we can help, on window sills, timber windows & doors and composite doors alike.
Mastic can only go onto a dry, clean joint, so window work in Brookside is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
Whatever the size of the job, it’s backed by our one-year guarantee.
- Place
- Brookside (SL5, SL4)
- Region
- Windsor and Maidenhead
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What window mastic looks like in Brookside
With historic houses such as St Leonard's Hill (about 3.2 miles north-east) nearby, there’s older building stock in the area around Brookside as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you let a flat or house near Ascot station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. If you live in an older home near Chapel of St Mary and St John, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Brookside is about 3 miles east of Wick Hill, in Windsor and Maidenhead. Across the SL5 area, we can carry out window mastic at your property. Brookside is one of 57 places in Windsor and Maidenhead we cover. We also work in Reading, about 13 miles from Brookside.
Postcode districts we cover here for window mastic: SL5 and SL4. If you need window mastic at a property on New Road, The Avenue and Coach Road or anywhere close by, we can help. Close by, we work in North Ascot (1 mile south-west), Plaistow Green (1 mile north), Woodside (1 mile north-east), Ascot (1 mile south-east) and Winkfield (1 mile north-west). Further out, we also cover Maidenhead (7 miles north), Windsor (4 miles north-east), Boyn Hill (6 miles north-west), Cookham (9 miles north), Furze Platt (8 miles north) and Dedworth (4 miles north).
Local landmarks in Brookside
Typical jobs here are in homes near Ascot Heath Church of England Junior School and Royal Hunt pub. Brookside’s nearest station is Ascot station, roughly 1.3 miles south of the centre. Well-known places in the area include Heatherwood Hospital (1 mile south) and The Lexicon (3 miles west). The countryside around Brookside includes Virginia Water Lake.
What happens if it’s left?
Not every sealant suits a window. Decorators’ caulk and bathroom silicone are not designed for outside joints that move. An exterior, low-modulus sealant stays flexible in sun and frost. Older cottages and farmhouses around Brookside can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference.
Why us?
- ARBOMaster approved applicator
- We leave the area clean and tidy
- Fully insured
- Anti-fungal silicone where joints get wet
Surface by surface
Window sills
The end joints of a sill tend to fail before the rest. We reseal them so rain cannot run into the wall.
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A neat, narrow bead in a colour to match keeps the clean look.
Honest limits
To be straight with you, some problems need a different trade:
- A sash or casement that won’t close properly
- Misting between the panes of a double-glazed unit (that needs a new unit)
- 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.
What we seal
- Composite doors
- Patio & French doors
- uPVC windows
- Timber windows & doors
- Window sills
- Aluminium frames
For landlords and businesses
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
For anyone letting property in or around Brookside, several properties can be quoted together. Send us the addresses and the work at each.
FAQs for Brookside
Is Brookside in your area for window mastic?
Yes, Brookside is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or drop us an email and let us know what needs doing, and we will give you a clear price.
Will you come out to Brookside?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Are you ARBOMaster approved?
Yes. We are an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
Can you work on commercial sites?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. Working times can be discussed when we quote.
Can you get sealant to suit coloured frames?
Yes. We can use white, brown, anthracite grey, black or clear, so the joint suits the frame.
Is it messy?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
Can you do several jobs on one visit?
Of course. Doing several areas at once is normally more efficient, so mention them when you ask for a quote.
How the visit works
Before we leave, we go over the finished joints with you and explain the cure time. The work normally takes a few hours for a few frames, or a day or more for a whole house, depending on how much there is to do. In a small place like Brookside, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by checking each window and door with you.
- The old mastic is cut out and the surfaces cleaned back.
- We fit backing rod in deep gaps so the sealant is the right depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Every joint is checked before we leave.
Getting ready for the visit
- Mention any tricky access
- Mention if the joints have been sealed before
- Let us know about parking restrictions
Ask for a quote
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we will explain what’s involved before giving you a price.
Advice
What we are called out for in Brookside
On timber frames, paint and putty build up around the joint. Old mastic gets painted over and cracks under the paint, and the wood moves with damp as well as heat.
Common reasons people contact us are:
- Draughts coming in around windows and doors
- Gaps left after new windows were fitted
- White mastic on grey or black frames
- Cracked sealant at the sill ends
If you look after a building such as Papplewick School, larger buildings have plenty of frames, and the mastic around each one ages.
What your quote should include
- Whether the sealant suits the joint
- Whether they seal over old material or remove it
- Is VAT in the price?
- Who does the work, and how experienced they are
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Can I do it myself?
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
A DIY attempt does not rule out a professional job. We cut it out and start again.