Surrey · England
External & façade joints in Tongham, Surrey
External mastic for Tongham, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Damp patches traced to an open external joint
- Rigid filler in a joint that should flex
- Failed seals between different materials
Honest limits
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Movement that is more than a sealant joint can take
- Cracks in the bricks or render themselves, away from the joints
- Damp that isn’t coming from the joint
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly.
Joints and surfaces we work on
- Copings & trims
- Concrete & block
- Façade panels
- Joints between brick and frames
- Render & cladding joints
- Brickwork movement joints
External mastic for homes and businesses in Tongham
A movement joint is only as good as its depth. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, so it bonds to the two sides only and can stretch. If you’re dealing with failed seals between different materials and brick movement joints where the sealant has split, we can help, whatever the surface.
Around Tongham, garages, outbuildings and extensions all add to the joints on the outside of a home. Leaks generally start at a gutter end, a garage door frame or where an extension meets the house.
Big or small, it’s backed by our one-year guarantee in Tongham and across Surrey.
- Where
- Tongham (GU10)
- Wider area
- Surrey
- Cover
- One year on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
What external mastic looks like in Tongham
With historic houses such as Wanborough Manor (about 3.1 miles east) nearby, there’s older building stock in the area around Tongham as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Homes close to Church of St Paul include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move. If you look after a building such as St Paul's CofE Infant School & Nursery, larger buildings have long runs of movement joint that eventually need resealing.
Tongham is about 1 mile south-east of Aldershot, in Surrey. Homes, rented property, offices and hotels in Tongham is covered for external mastic, old or new, large or small. Every job comes with our one-year guarantee. Our Surrey coverage runs to 395 places, and Tongham is one of them. There’s also a page for Reading, about 18 miles away.
Work in GU10 works the same way as everywhere else we cover. That includes homes and businesses on The Street, Chester Way and Lambourne Way and the roads around them. We also cover Sandy Cross (1 mile south), Ash (1 mile north-east), Seale (1 mile south-east), Ash Green (1 mile north-east) and Badshot Lea (1 mile west). Further out, we also cover Guildford (7 miles east), Woking (9 miles north-east), Camberley (7 miles north), Farnham (3 miles south-west), Frimley (6 miles north) and Haslemere (10 miles south).
Landmarks near Tongham
Locally, jobs take us to homes and businesses close to Aldershot Park, The White Hart pub and Ash Manor School. Tongham’s nearest station is Ash station, roughly 1.4 miles north-east of the centre. A little further out are Farnham Castle (3.2 miles west) and Guildford Hospital (5.3 miles east). Not far away are Aunt's Pool and Hog's Back.
What happens if it’s left?
Low-modulus sealants stretch easily, so they put less strain on the joint edges. That matters on brick, render and concrete, which can be weaker at the face. Too stiff a sealant can pull at the edges and break them. Around Tongham, water from a failed joint in an older home can soak into timber and plaster, and that is a much bigger job than renewing the sealant.
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we’ll explain the quote if you ask.
Why us?
- Trusted Arbo and Everbuild sealants
- Full insurance on every job
- Homes, businesses and hotels
- We never seal over old sealant
Take a look at what affects the cost and customer reviews.
Places near Tongham
What else we do in Tongham
Questions from Tongham
Can you do external mastic in Tongham?
Yes. We work across London and the South East, and Tongham is part of that. You can phone 0345 464 0079 or drop us an email and let us know what needs doing, and we will send you a clear quote.
Can you help a landlord with a rental near Ash station?
Yes, we work for landlords and letting agents. Just ring 0345 464 0079 or email us and tell us about the property, and we will give you a clear price.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We explain the product when we quote.
Do I have to be there?
We need access to the joints, so we’ll agree that with you when we book. For inside work, that normally means someone being in.
Do you have insurance?
Yes. We’re fully insured.
When will the joints need doing again?
That depends on the wall, the weather and the movement. Look for splits, hardening or edges coming away.
Will there be a smell?
It depends on the product. Some smell for a while, some hardly at all.
Is there a guarantee?
Yes. Every job comes with our 12-month guarantee.
Quotes for external mastic in Tongham
Your quote is based on your job. We take into account:
- Mould in or behind the old joints
- The number and length of the joints
- When we can work, for business premises
- The type of sealant required
Homes and businesses are quoted the same way: the amount of work, the access and the products needed. Ask us for a quote and we will explain what it covers.
What we need to know
Before you ask for a quote, have a think about:
- Any access issues, like height or stairs
- What the problem is, such as mould, gaps, leaks or cracking
- Roughly how big the job is
- Where the job is, and your postcode
If you’re in Tongham and need external mastic, ring 0345 464 0079 or drop us an email. Tell us what the problem is and where, and you will get a clear quote before work begins.
Surface by surface
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. We reseal them with a sealant suited to the panel material.
Copings and trims
A failed coping joint lets water into the top of the wall. Sealing them early saves the wall below.
How it works
Before we leave, we go over the finished joints with you and tell you how long to leave it. The work normally takes anything from a few hours to several days, depending on the building, depending on how much there is to do. Parking around Tongham is generally easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- We cut out the failed sealant and rake out any dirt or growth.
- The joint faces are cleaned and primed where the sealant needs it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Getting ready for the visit
- Keep pets and children clear of the area while we work
- Let us know about parking restrictions
- Clear the area around the work
Get a quote
Getting a quote is simple: let us know what needs doing and where, and roughly how big it is. Photos by email help us understand the job, and we will take it from there.
Related advice
Looking after it afterwards
After the cure time, these simple habits help:
- Never let anyone fill a movement joint with mortar
- Act on the first splits you see
- Do not let climbing plants root in the sealant
- Show decorators and builders where the movement joints are
Do not paint over the new sealant unless we’ve said the product is paintable. Many exterior sealants are not designed to be painted, and paint can crack as the joint moves.
Water getting behind cladding or render can go unnoticed for a long time. When it finally shows inside, the joint may have been open for years.
Common problems we fix in Tongham
Joints sealed without backing rod, or far too deep, rarely last. Sealant bonded to three sides has nowhere to go and tears as soon as the joint widens.
These are the problems we’re asked about most:
- Rain getting behind render or cladding at a joint
- Joints pointed up with cement by mistake
- Cracked joints where brick meets render or frames
- Sealant pulling away from one side of the joint
For landlords with property near Ash station, split movement joints are easy to miss on a rental until damp shows inside.
What to look for in a quote
- What happens if they find a problem under the old sealant
- Is the old sealant removed completely?
- Who turns up on the day
- Which colour the sealant will be