Surrey · England
Hinchley Wood External Mastic
External mastic in Hinchley Wood from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Weeds or debris growing in open joints
- Hard, crazed mastic that has stopped moving
- Damp patches traced to an open external joint
What sealant work can’t fix
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Render that is blown, hollow or coming away
- Adding movement joints to masonry that has none
- Rising or penetrating damp from elsewhere in the wall
If you’re not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer before you book.
Joints and surfaces we work on
- Brickwork movement joints
- Concrete & block
- Render & cladding joints
- Joints between brick and frames
- Copings & trims
- Façade panels
How we handle external mastic in Hinchley Wood
We’re ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Porous or awkward surfaces are primed where the sealant needs it and we use one wherever it does. We’re often asked to deal with old sealant gone brittle and cracked and weeds or debris growing in open joints, across render & cladding joints, brickwork movement joints and façade panels.
Outbuildings, garages and conservatories around homes in places like Hinchley Wood add more joints to look after. Gutter ends, garage door frames and the joints where an extension meets the house are typical spots for leaks.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Place
- Hinchley Wood (KT10, KT7)
- Region
- Surrey
- Cover
- One year on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Also near Hinchley Wood
Other services in Hinchley Wood
Can I do it myself?
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Hinchley Wood buildings and the weather
With historic houses such as Hampton Court Palace (about 1.9 miles north) nearby, there’s older building stock in the area around Hinchley Wood as well as newer homes. 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.
Homes close to Hinchley Wood Church include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move. Managing a site like Hinchley Wood Primary School? Then larger buildings have long runs of movement joint that eventually need resealing. If you let a flat or house near Hinchley Wood station, outside joints that have cracked can let damp into a rental, so check them between lets.
Hinchley Wood is about 2 miles south-west of Surbiton, in Surrey. We provide external mastic to homeowners, landlords and businesses in Hinchley Wood. 395 places in Surrey are on our list. Our London page covers work nearby.
Here we cover the KT10 and KT7 postcode area for external mastic. If you need external mastic at a property on Dorchester Close, Meadow Close and Manor Drive or anywhere close by, our applicators can take on the job. Close by, we work in Weston Green (1 mile north-west), Thames Ditton (1 mile north), Ditton Hill (1 mile east), Long Ditton (1 mile north-east) and Claygate (1 mile south). Within a short drive, we also cover Guildford (14 miles south-west), Woking (11 miles west), Epsom (4 miles south-east), Horley (15 miles south-east), Redhill (12 miles south-east) and Ewell (4 miles south-east).
Around Hinchley Wood
We work in homes and buildings around The Greyhound pub, Hinchley Wood School and Shrewsbury House School and the streets around them. Hinchley Wood has its own railway station: Hinchley Wood station. A little further out are Bentall Centre (2.8 miles north-east) and Metropolitan Police Mounted Branch Museum (1.2 miles north-west). For a walk, there’s The Lake and The Wood.
Landlord and commercial work in Hinchley Wood
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
Hotels need rooms back in use, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
What affects the quote in Hinchley Wood
You will get a clear quote before we start. It’s based on:
- How many rooms, windows or areas are involved
- The number and length of the joints
- Any working-time requirements on site
- Any mould that needs treating
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 we need extra access for height. Your quote takes all of that into account.
What we need to know
Photos help, but a description is a good start. Please mention:
- Where the property is
- Photos by email, if that is easy
- Whether it has been sealed before
- What the problem is, such as mould, gaps, leaks or cracking
If you’re in Hinchley Wood and need external mastic, call 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
The process
Once we’re on site, we compare the joints with what we discussed. 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. For a job in Hinchley Wood, 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.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
How to prepare
- Keep children and pets away from the work area
- For indoor joints, keep the area dry beforehand if you can
- Clear items away from the joints we are working on
Ask for a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. Whenever you’re ready, phone 0345 464 0079 or send us an email.
Related advice
Why deal with it now?
It often makes sense to reseal all the failing joints on an elevation together. Joints of the same age tend to fail together. In an older home around Hinchley Wood, damp from a failed joint can get into timber and plaster, which is far harder to put right than the sealant itself.
We don’t show prices on the website, because the cost depends so much on the job itself. For a quick quote, please ring 0345 464 0079 or email us.
Why Hinchley Wood customers choose us
- Sanitary silicone with an anti-fungal additive in wet areas
- White, clear, grey or another colour, product permitting
- 180+ five-star Google reviews
- We never seal over old sealant
See our cost guide or what customers say.
Questions from Hinchley Wood
Is Hinchley Wood in your area for external mastic?
Yes, Hinchley Wood is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or email us and tell us what needs doing.
Do you cover smaller places like Hinchley Wood?
Yes, Hinchley Wood is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
When is the sealant fully cured?
It depends on the product and the conditions. We tell you how long to leave it before we go.
What should I tell you?
A short description and the location, plus photos if you have them. If we need more, we’ll ask.
Is it OK to fill a movement joint with cement?
No. Rigid materials can’t move with the wall and the joint fails. Where a joint has been mortared, it can often be raked out and sealed properly.
Can you seal over the old sealant?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. The old sealant has to come out completely.
Is the work guaranteed?
Yes, always. There’s a 12-month guarantee on every job, large or small.
Do I need to be at home?
That depends on where the joints are. Inside work needs someone to give us access, and for outside work we’ll agree access with you when we book.
Different surfaces, different methods
Copings and trims
A failed coping joint lets water into the top of the wall. Sealing them early saves the wall below.
Cladding and façade panels
Panels heat up and cool down quickly, so the joint sealant has to cope with frequent movement. We choose the product to suit.