Windsor and Maidenhead · England
External Mastic in Bray Wick
Sealing brickwork movement joints, render, cladding and façade joints for Bray Wick, backed by a one-year guarantee. Ask us for a quote.
- Weathered mastic that no longer stretches
- Sealant that has lost its bond to the brick or render
- Rain getting behind render or cladding at a joint
External mastic for homes and businesses in Bray Wick
Joints in render and cladding are easy to overlook until a damp patch appears. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a colour to suit. If you’re dealing with movement joints with cracked, split or missing sealant and old sealant gone brittle and cracked, we can help, whatever the surface.
Older homes in small places like Bray Wick may be stone, brick or timber-framed, often with later extensions. Where one material meets another is where water usually gets in, and they need the right sealant at the right depth.
Big or small, it’s backed by our 12-month guarantee in Bray Wick and across Windsor and Maidenhead.
- Location
- Bray Wick (SL6)
- Region
- Windsor and Maidenhead
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What affects the cost of external mastic
The quote reflects the job in front of us. We take into account:
- Working hours on commercial sites
- The size of the job
- How many areas need sealing
- Mould in or behind the old joints
Combining jobs into one visit generally makes better use of the time than several visits, so tell us about everything that needs sealing. You’ll get one clear quote for the whole job.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Pictures of the joints, sent by email
- Where the property is
- If someone has resealed it before
- The rough size of the job
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll explain what’s involved.
Questions from Bray Wick
Do you cover Bray Wick for external mastic?
Yes, Bray Wick 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 tell us what needs doing.
I let a flat near Maidenhead station. Can you help?
Yes. We work for landlords and letting agents as well as householders, and several properties can be quoted together. Just phone 0345 464 0079 or email us with the address and what needs doing, and we’ll send you a clear quote.
How do I get a quote for external mastic in Bray Wick?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before any work starts.
Are you ARBOMaster approved?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Can a movement joint be filled with mortar?
No, not where the gap is a movement joint. Pointing it stops it working. A flexible sealant is the right fill.
How long does external mastic last?
There’s no fixed answer: sunny, exposed elevations and busy joints wear faster. A yearly look will tell you when they need doing. Our work comes with a 12-month guarantee.
What colours does the sealant come in?
The sealant colour is picked to suit the wall, so the joint sits quietly in the wall. Exterior sealants come in a good range of colours.
When is the sealant fully cured?
Most sealants are touch-dry well before they’re fully cured. We will give you the cure time for the product we used.
Leave it or put it right?
An open joint keeps letting water into the wall with every downpour. Wet masonry is more easily damaged by frost around the joint, so the problem grows beyond the joint itself. Around Bray Wick, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
Why book with us
- Quality sealants from Arbo and Everbuild
- A choice of colours where the product allows
- 180+ five-star Google reviews
- Neat joints and a tidy finish
Bray Wick buildings and the weather
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. Historic houses like Dorney Court (about 1.8 miles east) are a reminder that the area around Bray Wick has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
Schools such as Holyport CofE Primary School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. For an older house near a landmark such as St Michael's Church, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Bray Wick is about 2 miles south-east of Maidenhead, in Windsor and Maidenhead. Jobs in Bray Wick get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. We cover 57 towns and villages across Windsor and Maidenhead, large and small. Our Reading page covers work nearby (12 miles or so).
Work in SL6 works the same way as everywhere else we cover. You will find streets such as Windsor Road, Holyport Road and Upper Bray Road, and we cover them all. Main roads around Bray Wick include the M4. Neighbouring places we cover for external mastic include Boyn Hill (1 mile north-west), Cox Green (1 mile west), Maidenhead (2 miles north-west), Furze Platt (3 miles north-west) and Woolley Green (3 miles west). Further out, we also cover Windsor (4 miles south-east), North Ascot (6 miles south), Cookham (4 miles north), Dedworth (3 miles south-east), Broomhall (8 miles south-east) and South Ascot (7 miles south).
Around Bray Wick
In Bray Wick, that means homes and buildings near Desborough College, The Belgian Arms and Braywick Park and the streets around them. The nearest railway station is Maidenhead station, roughly 1.4 miles north-west. Nearby you’ll also find St Mark's Hospital (2.3 miles north-west) and Windsor Castle (4.7 miles east). For a walk, there’s Taplow Lake and Weycock Hill.
Also near Bray Wick
Other services in Bray Wick
What we’re called out for in Bray Wick
If plants are growing out of a joint, the sealant has generally failed or was never there. Roots and dirt hold water against the wall and speed up the damage.
Look out for any of the following:
- Water getting into walls through failed joints
- Sealant that has lost its bond to the brick or render
- Movement joints with cracked, split or missing sealant
- Joints pointed up with cement by mistake
Rented homes near Maidenhead station change hands often, and split movement joints are easy to miss on a rental until damp shows inside.
Before booking anyone
- Is the old sealant removed completely?
- How the colour is chosen
- What insurance they hold
- Who does the work, and how experienced they are
The process
When we arrive, we look over the joints with you first, so you know exactly what we are doing. We protect the surfaces around the joints before work begins. Most jobs take anything from a few hours to several days, depending on the building. For a village or hamlet like Bray Wick, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Preparing for the visit
- Tell us about any previous sealing or DIY attempts
- Let us know if you’ve seen damp or leaks
- Keep children and pets away from the work area
Ask for a quote
We quote each job on its own, so the first step is telling us about yours. Simply call 0345 464 0079 or drop us an email and describe the job and send photos if you have them.
Advice
Surface by surface
Cladding and façade panels
Metal and composite panels move a lot with temperature, so the joint sealant has to cope with frequent movement. The sealant is chosen with that in mind.
Concrete and blockwork
Concrete and block walls shrink as they dry and move with temperature. We reseal their joints with backing rod and a flexible product.
When it is not the sealant
A few problems are outside what sealant work can do:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Loose or hollow render, which needs re-rendering
- Subsidence or other structural problems
If you are not sure, just ring 0345 464 0079 or email us and we’ll give you a straight answer before you book.
Joints and surfaces we work on
- Brickwork movement joints
- Render & cladding joints
- Façade panels
- Copings & trims
- Concrete & block
- Joints between brick and frames
Work for landlords, hotels and businesses
Letting agents often deal with us directly. Tell us the address, the job and how access works.
We also work for property managers and facilities teams. We can quote a run of properties together.