Surrey · England
External & façade joints in Ashford, Surrey
External mastic in Ashford from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Joints with sealant missing in places
- Damp patches traced to an open external joint
- Joints where the bead has come unstuck
External mastic in Ashford
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. The colour is chosen to suit the brick or render so the joint doesn’t stand out. We are often asked to deal with old sealant gone brittle and cracked and gaps where render, brick and frames meet, on render & cladding joints, façade panels and joints between brick and frames.
Around Ashford, outside jobs take in garage door frames, porches, gutters and trims as well as walls. Where two materials meet, they move differently, and the sealant has to allow for it.
You get a 12-month guarantee, the same in Ashford as everywhere else we work.
- Place
- Ashford (TW15, TW19, TW13)
- Region
- Surrey
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
How to look after the new joints
So the new joints stay in good condition:
- Keep high-pressure jets off the joints
- Keep movement joints as flexible joints, not mortar
- Show decorators and builders where the movement joints are
- Ask before painting over external sealant
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges over time.
If you can see gaps, plants or bare sections in a joint, have it checked. Earlier resealing means a smaller job and a better result.
Towns and villages near Ashford
Other services in Ashford
Surface by surface
Brickwork movement joints
Brick movement joints are often mistaken for a missing mortar line. Where one has been mortared, we cut it out and reseal it with sealant.
Copings and trims
Coping joints that leak let water straight down into the wall. Resealing them is a small job that protects a lot.
External mastic in Ashford: local notes
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Letting a property close to Ashford Surrey station? Then outside joints that have cracked can let damp into a rental, so check them between lets. Managing a site like Spelthorne College? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Ashford is about 6 miles south of Hayes, in Surrey. Wherever you are in the TW15 postcode area, we cover external mastic for homes and businesses. Ashford is one of 395 places in Surrey we cover for external mastic. There’s also a page for London, roughly 17 miles from Ashford.
Work in TW15, TW19 and TW13 works the same way as everywhere else we cover. We cover properties on Church Road, Station Road and London Road. Ashford is on the A30 and A308, so it’s easy for us to get to. Other places close to Ashford include Littleton Common (1 mile south-east), Ashford Common (1 mile south-east), West Bedfont (1 mile north), Stanwell (2 miles north) and Hounslow (2 miles east). Within a short drive, we also cover Guildford (14 miles south), Woking (9 miles south-west), Camberley (13 miles south-west), Epsom (11 miles south-east), Ewell (11 miles south-east) and Egham (4 miles west).
Local landmarks in Ashford
Around Ashford, our work takes us to homes and buildings near Clarendon Primary School and Thomas Knyvett College. There’s a railway station in Ashford itself: Ashford Surrey station. A little further out are Ashford Hospital (0.7 miles north) and Spelthorne Museum (2.2 miles west). For a walk, there’s Staines Reservoirs and Kempton Park Reservoirs.
How the visit works
Once we are on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours to a few days, depending on the length of joint and the access. A visit in Ashford needs access to the work and a place to park close by. If the job is outside, mention gates, side access and anything above ground floor.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- The old mastic and anything lodged in the joint is removed.
- We clean both faces of the joint and prime them where the product calls for it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Getting ready for the visit
- Tell us about any water getting in
- Tell us if parking is tricky
- Keep pets and children clear of the area while we work
Ask for a quote
For a quote, ring 0345 464 0079 or drop us an email with the location and a short description of the problem. You’ll have a clear quote before we start.
Related advice
DIY versus a professional finish
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Common problems we fix in Ashford
Using the wrong sealant is another common reason. A stiff, general-purpose sealant cannot cope with a joint that moves a lot, so it pulls away from the edges.
It’s worth asking for a quote if you see:
- Joints pointed up with cement by mistake
- Water getting into walls through failed joints
- Gaps where render, brick and frames meet
- Joints with sealant missing in places
Homes close to Parish Church of St Matthew include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Comparing quotes
- What insurance they hold
- What the cure time is
- What guarantee comes with the work
- Whether you can choose the colour
How we quote for external mastic
The quote reflects the job in front of us. We look at:
- Whether there’s mould to deal with
- The old material and how stubborn it is
- Any working-time requirements on site
- How many areas need sealing
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Call for a quick quote and we’ll go through it with you.
What we need to know
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Whether it has been sealed before
- If it’s domestic, commercial or a hotel
- The address or postcode of the job
- The rough size of the job
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
Your questions about external mastic in Ashford
What guarantee comes with external mastic in Ashford?
Every job comes with our 12-month guarantee, wherever it is. We’re fully insured, and an ARBOMaster approved applicator.
Do you cover Ashford for external mastic?
Yes. Our work covers London and the South East, and Ashford is part of that. Just call 0345 464 0079 or send us an email with a few details of the job.
Do the sealants smell?
That depends on the sealant. Some products have a noticeable smell, others very little.
Do I have to be there?
It depends on the job. For work indoors, someone needs to let us in, while outside work can sometimes be arranged differently.
Is it OK to seal over old sealant?
No, it will not last. It can look neat for a few weeks, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
How do you reach high-level joints?
It depends on the building. We work on joints that can be reached safely. Tell us about the building and we’ll confirm what access is needed.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator and we’re fully insured too.
What do you put in the joint?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
What we cannot put right
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Movement that’s more than a sealant joint can take
- Cracking across the wall rather than at a joint
- Damp that isn’t coming from the joint
If in doubt, phone 0345 464 0079 or send us an email and we’ll say what we think before booking.
What we seal
- Joints between brick and frames
- Façade panels
- Brickwork movement joints
- Render & cladding joints
- Concrete & block
- Copings & trims