Surrey · England
Wisley External Mastic
External mastic in Wisley from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Old sealant gone brittle and cracked
- Cracked joints where brick meets render or frames
- Rain getting behind render or cladding at a joint
What affects the cost of external mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- How easy the joints are to reach
- When we can work, for business premises
- The product the joint needs
- The number of rooms or windows
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 the work is at height. We take all of that into account in your quote.
What to tell us for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- How many joints, rooms or windows are involved
- Photos by email, if that is easy
- The type of property
- The problem you’ve noticed
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
External mastic for homes and businesses in Wisley
Ground-floor and low-level joints are straightforward to reach. For joints higher up, give us some details of the building and we’ll confirm what’s needed to reach them safely. We are often asked to deal with leaking joints around cladding and façade panels and rigid filler in a joint that should flex, across concrete & block, brickwork movement joints and façade panels.
Around Wisley, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water usually gets in.
Our work is backed for twelve months, in Wisley and everywhere else we cover.
- Place
- Wisley (GU23)
- Region
- Surrey
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Places near Wisley
Also in Wisley
Wisley: your questions answered
Will you come out to Wisley?
Yes. Wisley 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.
Can you do external mastic in Wisley?
Yes. Our work covers London and the South East, and Wisley is part of that. You can phone 0345 464 0079 or send us an email and let us know what needs doing, and we will send you a clear quote.
Will there be a smell?
Possibly a little. It fades as the sealant cures, and ventilation helps.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.
What does external mastic cost?
Every job is different, so each one gets its own quote. For a quick quote, ring 0345 464 0079 or email us with a short description of the job.
How do you reach high-level joints?
It depends on the building. Where joints can be reached safely, we will do them. Tell us about the building and we will confirm what access is needed.
How long should I leave it?
It depends on the product. We tell you how long to leave it before we go.
Can you seal joints between two different materials?
Yes. Materials like render, brick, metal and uPVC all move differently, so the joint between them must be flexible. We choose one that suits both surfaces.
Outside joints around Wisley
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Byfleet Manor (about 0.8 miles north-east) are a reminder that the area around Wisley 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.
If you live in an older home near Wisley Church, old and new materials meet at the roofline and walls, which is where sealant earns its keep. For landlords with property near West Byfleet station, outside joints that have cracked can let damp into a rental, so check them between lets.
Wisley is about 4 miles south of Weybridge, in Surrey. We provide external mastic to homes and businesses in Wisley and nearby, as part of our work across Surrey. Wisley is one of 395 places in Surrey we cover. Crawley is on our list too, about 19 miles from Wisley.
Jobs for external mastic in GU23 works the same way as everywhere else we cover. Whether your property is on Weybank, Deers Farm Close and Wisley Lane or anywhere close by, our applicators can take on the job. Other places close to Wisley include Pyrford Green (1 mile west), Byfleet (1 mile north), Hatchford End (2 miles south-east), New Haw (2 miles north) and Martyr's Green (2 miles south-east). Larger places within reach include Guildford (7 miles south-west), Woking (4 miles west), Camberley (11 miles west), Epsom (9 miles east), Redhill (15 miles south-east) and Ewell (10 miles east).
Landmarks near Wisley
Typical jobs here are in homes near The Anchor pub, Manor Farm and Fullbrook School. Wisley’s nearest station is West Byfleet station, about 1.7 miles north-west of the centre. A little further out are Send and Ripley History Society Museum (1.8 miles south-west) and Woking Community Hospital (3.5 miles west). Open spaces near Wisley include Papercourt Marshes and Boldermere Lake.
Looking after it afterwards
After the cure time, these simple habits help:
- Get split or bare joints resealed while the damage is small
- Tell anyone working on the walls about the movement joints
- Wash walls gently around the sealant
- Deal with leaking gutters that soak the joints below
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years.
How the visit works
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, do the work and tidy away. Most jobs take a few hours for a handful of joints, longer for a whole elevation. For a village or hamlet like Wisley, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
How to prepare
- Tell us if parking is tricky
- Clear the area around the work
- Keep pets and children clear of the area while we work
Ask for a quote
Need a quote? Please ring 0345 464 0079 or email us with a few details. We’ll explain what we’d do and give you a clear price before we start.
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Can I do it myself?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
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.
Landlord and commercial work in Wisley
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can go on one quote.
Common problems we fix in Wisley
If plants are growing out of a joint, the sealant has normally failed or was never there. Dirt and roots then trap moisture in the joint and make things worse.
Signs it’s time to call us include:
- Sealant pulling away from one side of the joint
- Joints pointed up with cement by mistake
- Cracked joints where brick meets render or frames
- Hard, crazed mastic that has stopped moving
Managing a site like St Mary's CofE Controlled Primary School? Then its movement joints, gutters and trims need looking after like any other building’s.
What to look for in a quote
- Whether the sealant suits the joint
- Whether VAT is included
- The length of the guarantee
- Whether they seal over old material or remove it
What the job involves on each surface
Copings and trims
Coping and trim joints face rain and sun head on. We reseal them with an exterior sealant suited to the material.
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. Each joint gets a sealant that suits the panel and its movement.