Windsor and Maidenhead · England
Eton Wick External Mastic
Sealing brickwork movement joints, render, cladding and façade joints in Eton Wick, with a 12-month guarantee on every job. Ask us for a quote.
- Rigid filler in a joint that should flex
- Old sealant gone brittle and cracked
- Cracked joints where brick meets render or frames
How the job changes by surface
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. They’re resealed over backing rod with a low-modulus sealant in a colour to suit the brick.
Cladding and façade panels
Panels heat up and cool down quickly, so the joint sealant has to cope with frequent movement. The sealant is chosen with that in mind.
External mastic for homes and businesses in Eton Wick
Low-level joints can generally be done from the ground. Where joints are higher up, tell us about the building when you get in touch and we’ll confirm what access is needed. We work on concrete & block, brickwork movement joints and render & cladding joints, and common reasons people get in touch are leaking joints around cladding and façade panels and weathered mastic that no longer stretches.
Somewhere as small as Eton Wick, homes and farm buildings often face open ground, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
Our work is backed for twelve months.
- Location
- Eton Wick (SL4)
- Region
- Windsor and Maidenhead
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Work for landlords, hotels and businesses
We work for letting agents and landlords as well as householders. Sealant work between tenants is a simple way to keep a property in good order.
Letting agents often deal with us directly. Tell us the address, the job and how access works.
Questions from Eton Wick
Is Eton Wick within the area you cover?
Yes. Eton Wick is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
I let a flat near Windsor & Eton Central station. Can you help?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before work begins.
Is the work guaranteed?
Yes. Every job comes with a one-year guarantee.
Will you leave a mess?
No. The area is protected while we work and cleaned up afterwards.
How often do external joints need resealing?
That depends on the wall, the weather and the movement. Look for splits, hardening or edges coming away, and reseal at that point.
Is it OK to seal over old sealant?
No, because it fails. The old sealant always comes out first, so the new sealant bonds properly.
Can you reach joints on upper floors?
It depends on the building. Send us photos and a rough idea of the height and we’ll confirm how they can be reached safely.
Which products do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We explain the product when we quote.
Why act early in Eton Wick
The longer a joint stays open, the more water the wall takes in. Wet masonry is more easily damaged by frost near the open joint, so the damage spreads beyond the joint. In a small place like Eton Wick, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all play a part, and we will explain the quote if you ask.
Why choose Mr Mastic in Eton Wick
- Tidy, careful work
- 4.9 on Google from 180+ five-star reviews
- A choice of colours where the product allows
- Anti-fungal sanitary silicone in wet areas
Take a look at what affects the cost or our reviews.
What external mastic looks like in Eton Wick
Historic houses like Dorney Court (about 1.4 miles west) are a reminder that the area around Eton Wick has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material. 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.
Homes close to Church of Saint John the Baptist include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant. For landlords with property near Windsor & Eton Central station, split movement joints are easy to miss on a rental until damp shows inside. If you look after a building such as Eton Wick CofE First School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Eton Wick is about 1 mile north of Windsor, in Windsor and Maidenhead. We carry out external mastic for householders, landlords and businesses in Eton Wick and the surrounding area, as part of our work across Windsor and Maidenhead. We cover 57 towns and villages across Windsor and Maidenhead. For nearby work, see our Reading page.
Work in SL4 works the same way as everywhere else we cover. If you need external mastic at a property on Eton Wick Road, Princes Close and The Wheatbutts or anywhere close by, our applicators can take on the job. Neighbouring places we cover for external mastic include Boveney (1 mile south-west), Clewer (1 mile south-east), Eton (1 mile east), Windsor (1 mile south) and Dedworth (1 mile south). Larger places within reach include Maidenhead (4 miles west), Boyn Hill (5 miles west), North Ascot (6 miles south-west), Cookham (6 miles north-west), Furze Platt (5 miles north-west) and Broomhall (7 miles south).
Landmarks near Eton Wick
Around Eton Wick, our work takes us to homes and buildings near The Westgate School, Westgate School and Shepherds Hut pub and the streets around them. Eton Wick’s nearest station is Windsor & Eton Central station, about 1.5 miles south-east. Well-known places in the area include The History On Wheels Museum (within half a mile north-east) and Windsor Castle (1.7 miles south-east). Not far away are Taplow Lake and Bray Pit.
More services for Eton Wick
When it isn’t the sealant
New sealant cannot fix everything, and we’d rather say so up front. It will not solve:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Cracked brickwork or render that needs a builder or plasterer
- Walls that need new movement joints cut into them
If you are not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Surfaces we seal
- Façade panels
- Concrete & block
- Brickwork movement joints
- Render & cladding joints
- Joints between brick and frames
- Copings & trims
What we do, step by step
There’s no need to move everything out before we come, just the space around the work. We protect the rest, and the work takes a few hours to a few days, depending on the length of joint and the access in most cases. In a small place like Eton Wick, access is generally the main thing to plan. 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.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Preparing for the visit
- Mention any sign-in or site rules at work premises
- Tell us about access, such as stairs, a lift or high-level joints
- Where the joints are inside, avoid wetting them before we arrive
Getting a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email photos if that’s easy.
Read more
How we quote for external mastic
Jobs vary more than people expect. What affects the quote:
- Whether old sealant or filler has to be cut out
- How many rooms, windows or areas are involved
- How easy the joints are to reach
- Any mould that needs treating
We don’t show prices on the website, because each job is priced on what it involves. Call for a quick quote.
What we need to know
To help us quote quickly, let us know:
- Any previous sealing or DIY work
- Whether it’s a home or a business
- A few pictures by email, if you can
- The address or postcode of the job
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. When it suits you, phone 0345 464 0079 or email us.
DIY versus a professional finish
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.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.