Surrey · England
External Mastic in Ashford Common
Sealing brickwork movement joints, render, cladding and façade joints for householders, landlords and businesses in Ashford Common. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Hard, crazed mastic that has stopped moving
- Moss and dirt in joints with no sealant left
- Brick movement joints where the sealant has split
External mastic in Ashford Common
Movement joints let brickwork, render and cladding expand and shrink without cracking. The sealant in it has to stretch and squeeze for years, and when it fails, the wall takes the strain and water finds a way in. If you have panel joints letting water in and sealant pulling away from one side of the joint, we can help, on copings & trims, render & cladding joints and façade panels alike.
Homes around Ashford Common range from older cottages to newer houses, with walls and rooflines of every type. Older gutters and trims need their joints resealed; newer brick and render need their movement joints kept sound.
We stand behind the work with a one-year guarantee.
- Place
- Ashford Common (TW15, TW16)
- Wider area
- Surrey
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Landlords, agents and businesses in Ashford Common
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
We work for letting agents and landlords as well as householders. Resealing between tenancies is a simple way to keep a property in good order.
Walls and rooflines in Ashford Common
Historic houses like Strawberry Hill House (about 4.6 miles east) are a reminder that the area around Ashford Common 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. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Letting a property close to Upper Halliford station? Then outside joints that have cracked can let damp into a rental, so check them between lets. Homes close to St Saviour include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
Ashford Common is about 1 mile north-west of Sunbury-on-Thames, in Surrey. Every kind of property in Ashford Common can book us for external mastic, old or new, large or small. The work is guaranteed for a year. Across Surrey, we cover 395 places, Ashford Common among them. Our London page covers work nearby.
We cover every part of TW15 and TW16 for external mastic and the streets around it. Whether your property is on Saxon Road, Dane Road and Tudor Road or a nearby road, our applicators can take on the job. Other places close to Ashford Common include Littleton Common (1 mile south-west), Hounslow (1 mile north-east), Charlton (1 mile south), Sunbury-on-Thames (1 mile south-east) and Ashford (1 mile north-west). We also work in nearby towns such as Guildford (14 miles south-west), Woking (10 miles south-west), Camberley (14 miles south-west), Epsom (10 miles south-east), Ewell (9 miles south-east) and Egham (5 miles west).
Landmarks near Ashford Common
Locally, jobs take us to homes and businesses close to Sunbury Park, Sunbury Manor School and Sunbury Manor School and the streets around them. For rail, the closest station is Upper Halliford station, about 0.9 miles south-east. Well-known places in the area include Ashford Hospital (1.7 miles north-west) and Kempton Steam Museum (1.5 miles east). For a walk, there’s St Ann's Hill and Kempton Park Reservoirs.
Different surfaces, different methods
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.
Concrete and blockwork
The face of concrete or block is often dusty, so cleaning and priming matter. We prime where the sealant needs it before sealing.
What happens if it’s left?
Done well, a resealed joint is a neat, straight line that suits the wall. A rushed bead with no backing looks untidy and doesn’t last so it’s worth doing right. In a smaller place like Ashford Common, wherever a wall is exposed, a failed outside joint is a real source of damp. Indoors, a failed seal lets water into floors and panels as it would anywhere.
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first and agree the price before starting.
Why book with us
- Homes, businesses and hotels
- White, clear, grey or another colour, product permitting
- 4.9 on Google from 180+ five-star reviews
- 20+ years of sealant experience
Take a look at what affects the cost or customer reviews.
What we’re called out for in Ashford Common
Sometimes a movement joint was filled with mortar or a rigid filler. The joint can’t move, so the wall cracks somewhere else instead.
It’s worth asking for a quote if you see:
- Cracked joints where brick meets render or frames
- Weathered mastic that no longer stretches
- Joints pointed up with cement by mistake
- Damp patches traced to an open external joint
For site and facilities teams at buildings such as Meadhurst Primary School, its movement joints, gutters and trims need looking after like any other building’s.
Questions to ask before you book
- How the joint is cleaned and prepared
- Whether the sealant suits the joint
- Whether all the old sealant comes out first
- Whether VAT is included
DIY sealant or a professional job?
If you’ve already had a go yourself, that is fine. We cut it out and start again, so just mention it when you contact us.
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
Nearby places to Ashford Common
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Aftercare tips
No joint lasts for ever, but care makes a real difference. Our tips:
- Deal with leaking gutters that soak the joints below
- Don’t let climbing plants root in the sealant
- Avoid pressure-washing directly into sealant joints
- Leave the joints unpainted unless we have said otherwise
Do not let soil, plants or ivy build up against the new joints. Anything that holds water against the joint wears it out sooner.
A joint that has stopped moving pushes the movement elsewhere, normally as cracking in the brickwork or render nearby. Resealing it early helps prevent that.
Ashford Common questions
Is Ashford Common in your area for external mastic?
Yes, Ashford Common is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job.
Can you help a landlord with a rental near Upper Halliford station?
Yes. We work for landlords and agents as well as householders, and several properties can be quoted together. You can call 0345 464 0079 or send us an email with the details for a clear quote.
What do you need from me for a quote?
Tell us what needs doing and where. If we need more, we will ask.
What is a movement joint?
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 use backing rod?
Backing rod controls the sealant depth and keeps it off the back of the joint. That way it bonds to the two sides only and can stretch.
How long does external mastic take?
A typical job takes anything from a few hours to several days, depending on the building, including preparation and clearing up. We’ll confirm how long when we quote.
Do I need to be at home?
We need access to the joints, so we’ll agree that with you when we book. Indoors, that normally means someone at home.
Is it worth trying it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
How the visit works
When we arrive, we start by going over the job with you. We protect the surfaces around the joints before any work begins. The work normally takes anything from a few hours to several days, depending on the building. For a job in Ashford Common, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- Each joint is checked and the colour of the new sealant agreed.
- 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.
How to prepare
- Tell us about any previous sealing or DIY attempts
- Tell us if parking is tricky
- Clear items away from the joints we’re working on
Get a quote
We don’t publish a price list. Instead, we give you a clear quote for your job. To get started, phone 0345 464 0079 or drop us an email.