Surrey · England
Highstreet Green External Mastic
Movement joints in Highstreet Green need attention? We cut out the old, prepare the joints and apply the right sealant.
- Failed sealant between panels on a façade
- Movement joints with cracked, split or missing sealant
- Weathered mastic that no longer stretches
How we handle external mastic in Highstreet Green
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible exterior sealant takes up that movement where a rigid filler would soon crack. If you are dealing with hard, crazed mastic that has stopped moving and sealant that has lost its bond to the brick or render, we can help.
External sealant needs dry, clean surfaces, so work around Highstreet Green is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
All of our work is guaranteed for twelve months.
- Where
- Highstreet Green (GU8)
- Region
- Surrey
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Walls and rooflines in Highstreet Green
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.
Around Highstreet Green, as everywhere, external mastic is only as good as the preparation behind it.
Highstreet Green is about 10 miles south of Guildford, in Surrey. We provide external mastic to homes and businesses in Highstreet Green and the surrounding area, as part of our work across Surrey. Across Surrey, we cover 395 places, Highstreet Green among them. You can also see our page for Crawley, roughly 18 miles from Highstreet Green.
Every address in GU8 is within our area for external mastic, from the main roads to the quietest streets. If you’re just outside Highstreet Green, we cover Chiddingfold (2 miles west), Hambledon (2 miles north-west), Wormley (3 miles north-west), Sandhills (3 miles north-west) and Hydestile (3 miles north). Further out, we also cover Guildford (10 miles north), Woking (15 miles north), Farnham (11 miles north-west), Dorking (15 miles north-east), Frimley (15 miles north) and Haslemere (5 miles west).
What’s near Highstreet Green
The closest station to Highstreet Green is Witley station, about 2.7 miles north-west of the centre. Well-known places in the area include Milford Hospital (4.4 miles north). For a walk, there’s Hydon's Ball and Shillinglee Lake.
What else we do in Highstreet Green
How the visit works
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes a few hours for a handful of joints, longer for a whole elevation. Somewhere like Highstreet Green needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- 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.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Getting ready for the visit
- Clear the area around the work
- Mention if the joints have been sealed before
- Let us know about stairs, lifts or work at height
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 are ready, phone 0345 464 0079 or drop us an email.
Related advice
Why act early in Highstreet Green
A failed movement joint lets water into the wall and can run behind render or cladding. Dealing with it early keeps the repair to the joint, rather than the wall around it. Older cottages and farmhouses around Highstreet Green can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
The cost depends on the amount of work, how much old material has to come out and how easy the joints are to reach. We give a clear quote before any work starts.
Why choose Mr Mastic in Highstreet Green
- We leave the area clean and tidy
- We agree the colour with you first
- Sealant colour chosen to suit
- More than 20 years in sealant work
Take a look at how sealant jobs are priced or what customers say.
Landlords, agents and businesses in Highstreet Green
For anyone letting property in or around Highstreet Green, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs, and photos by email help.
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
How the job changes by surface
Render joints
The face of render can be soft, so a sealant that stretches easily protects the edges. We prime where the product needs it.
Brickwork movement joints
Brick movement joints are often mistaken for a missing mortar line. If that’s happened, we rake it out and reseal it properly.
Highstreet Green questions
Is Highstreet Green in your area for external mastic?
Yes, Highstreet Green is within the area we cover. Our work covers 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 Witley station?
Yes, we work for landlords and letting agents. Just call 0345 464 0079 or email us and tell us about the property, and we will give you a clear price.
Can you quote for more than one area?
Yes. Just list everything you need.
What is backing rod for?
Backing rod controls the sealant depth and keeps it off the back of the joint. Then the sealant bonds to two faces and can move.
What sealant do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Where do you work from?
We’re a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
Do you have insurance?
Yes. We are fully insured.
Do you work at height?
That depends on the building and the joints. Where joints can be reached safely, we will do them. Tell us about the building and we will confirm what access is needed.
Quotes for external mastic in Highstreet Green
You will get a clear quote before any work starts. It’s based on:
- How easy the joints are to reach
- Any mould that needs treating
- How much there is to do
- The type of sealant required
We don’t show prices on the website, because each job is priced on what it involves. Call for a quick quote.
What to tell us for a quote
Photos help, but a description is a good start. Please mention:
- The type of property
- Where the property is
- Pictures of the joints, sent by email
- The problem you’ve noticed
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
What we’re called out for in Highstreet Green
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.
Signs it’s time to call us include:
- Cracked joints where brick meets render or frames
- Failed sealant between panels on a façade
- Plants rooting in failed movement joints
- Damp patches traced to an open external joint
Rented homes near Witley station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets.
What your quote should include
- How hidden problems are handled
- What preparation is included
- Whether VAT is included
- Whether the sealant suits the joint
Should I try it myself 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.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.