Windsor and Maidenhead · England
Braywoodside External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Braywoodside and across Windsor and Maidenhead. Fully insured, ARBOMaster approved and guaranteed for a year.
- Sealant pulling away from one side of the joint
- Leaking joints around cladding and façade panels
- Moss and dirt in joints with no sealant left
External mastic in Braywoodside, done properly
For buildings in Braywoodside, we reseal external joints of all kinds, from brick movement joints to cladding panels. The preparation is the same whatever the wall: clean, sound faces and a controlled depth. If you have rain getting behind render or cladding at a joint and sealant pulling away from one side of the joint, we can put it right.
Somewhere as small as Braywoodside, homes and farm buildings often face open ground, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
We stand behind the work with a one-year guarantee, so you are covered after we’ve gone.
- Where
- Braywoodside (SL6)
- Wider area
- Windsor and Maidenhead
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What affects the cost of external mastic
Jobs vary more than people expect. The main factors:
- Any mould that needs treating
- How many rooms, windows or areas are involved
- The product the joint needs
- How much old sealant there is and how hard it is to remove
The cost depends on how much there is to do, how hard the old material is to remove and how easy the joints are to reach. You’ll have a clear quote before any work starts, so you know where you stand.
What we need to know
Before you ask for a quote, have a think about:
- How many joints, rooms or windows are involved
- Access, such as stairs, a lift or height
- What the problem is, such as mould, gaps, leaks or cracking
- A few photos by email, if you can
For external mastic in Braywoodside, phone 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Your questions about external mastic in Braywoodside
Do you cover Braywoodside for external mastic?
Yes. We work across London and the South East, and Braywoodside is part of that. You can call 0345 464 0079 or send us an email and let us know what needs doing.
Do you cover smaller places like Braywoodside?
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.
Can you seal over the old sealant?
No. New silicone won’t bond to old silicone, and it traps any mould or water underneath. It all has to come out first.
Do you work at height?
It depends on the height and the site. Low-level joints are straightforward; for higher work, tell us about the building and we will confirm what’s needed.
Do the sealants smell?
Possibly a little. Any smell clears as the sealant cures, and ventilation helps.
Why is there a gap in my brick wall?
It’s a deliberate gap that lets the wall expand and contract without cracking. It should be filled with flexible sealant, never mortar.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator and we’re fully insured too.
Do you seal joints where cladding meets other materials?
Yes. Different materials move at different rates, so a flexible sealant is needed where they meet. The sealant is matched to both sides.
How it works
All our tools and materials come with us in the van, so there’s nothing for you to buy. After a quick look at the joints together, the area is protected and the work begins. It normally takes anything from a few hours to several days, depending on the building. Somewhere as small as Braywoodside, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
Preparing for the visit
- Mention if the joints have been sealed before
- Plan for the work area to be out of bounds to pets and children
- For indoor joints, keep the area dry beforehand if you can
Getting a quote
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. A few photos by email make the job easier to understand, and we will come back to you with a quote.
Read more
How the job changes by surface
Copings and trims
Coping joints that leak let water straight down into the wall. Sealing them early saves the wall below.
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. We seal the joint with a flexible exterior sealant so neither cracks the other.
Also near Braywoodside
Also in Braywoodside
Outside joints around Braywoodside
Historic houses like Dorney Court (about 3.8 miles north-east) are a reminder that the area around Braywoodside has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. 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.
Rented homes near Maidenhead station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies. Historic houses such as Dorney Court, about 3.8 miles north-east, show how far back building around Braywoodside goes.
Braywoodside is about 3 miles south of Maidenhead, in Windsor and Maidenhead. Across the SL6 area, our applicators can take on external mastic. Our Windsor and Maidenhead coverage runs to 57 places, and Braywoodside is one of them. You can also see our page for Reading, about 10 miles away.
We cover every part of SL6 for external mastic and the streets around it. Nearby, we also carry out external mastic in Paley Street (1 mile north-west), Littlefield Green (1 mile west), Touchen-end (1 mile north-east), Hawthorn Hill (1 mile south) and Stud Green (1 mile north-east). Further out, we also cover Maidenhead (3 miles north), Windsor (5 miles east), Boyn Hill (3 miles north), North Ascot (4 miles south-east), Cookham (6 miles north) and Furze Platt (4 miles north).
Near you in Braywoodside
We work in homes and buildings around The Bridge House Public House And Adjoining Barn and Ockwells Park and the streets around them. The closest station to Braywoodside is Maidenhead station, roughly 3.3 miles north. Other landmarks nearby include The Lexicon (3.9 miles south) and St Mark's Hospital (3.6 miles north). The countryside around Braywoodside includes Taplow Lake and Bray Pit.
Why act early in Braywoodside
Mortar or ordinary filler might look like a quick way to close an open joint, but it locks the joint solid. The movement then cracks the brickwork or render nearby. The correct repair is a flexible sealant with the right backing. Around Braywoodside, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
What you pay reflects the work, not guesswork. That is why we ask a few questions first.
Why us?
- Anti-fungal silicone where joints get wet
- White, clear, grey or coloured to suit, where the product allows
- Rated 4.9 stars on Google
- Colour picked to suit the job
Read how sealant jobs are priced and customer reviews.
For landlords and businesses
We also work for property managers and facilities teams. Several sites can go on one quote, and we’re fully insured.
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Common problems we fix in Braywoodside
Sometimes a movement joint was filled with mortar or a rigid filler by mistake. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
These are the problems we’re asked about most:
- Leaking joints around cladding and façade panels
- Movement joints filled with mortar instead of sealant
- Brick movement joints where the sealant has split
- Rain getting behind render or cladding at a joint
If you look after a building such as Holyport College, larger buildings have long runs of movement joint that eventually need resealing.
What your quote should include
- The length of the guarantee
- What insurance they hold
- When the joint can take water or movement
- How hidden problems are handled
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. We suggest:
- Get split or bare joints resealed while the damage is small
- Keep water from gutters off the wall
- Wash walls gently around the sealant
- Don’t let climbing plants root in the sealant
Look over the joints once a year, ideally after winter. Splits, gaps at the edges or plants in the joint are early warning signs.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick, all bigger jobs than a reseal.