Surrey · England
Sandhills External Mastic
Movement joints in Sandhills need attention? We remove the old material, prepare the joints and seal them properly.
- Weeds or debris growing in open joints
- Gaps where render, brick and frames meet
- Weathered mastic that no longer stretches
Keeping the joints in good condition
So the new joints stay in good condition:
- Wash walls gently around the sealant
- Tell anyone working on the walls about the movement joints
- Check the sealant is paintable before painting near it
- Keep movement joints as flexible joints, not mortar
Avoid pressure-washing straight into the joints. A strong jet can damage the edges of the bead.
Small splits are the time to act. Then it’s a straightforward cut-out and reseal.
How we handle external mastic in Sandhills
For buildings in Sandhills, we reseal external joints of all kinds, from brick movement joints to cladding panels. The preparation is the same whatever the wall: clean, sound faces and a controlled depth. If you have sealant pulling away from one side of the joint and plants rooting in failed movement joints, we can put it right, on joints between brick and frames, render & cladding joints and concrete & block alike.
Somewhere as small as Sandhills, homes and farm buildings often face open ground, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
You’re covered for a year from the day we finish. If there’s a problem with it, please ring 0345 464 0079 or email us.
- Place
- Sandhills (GU8)
- Wider area
- Surrey
- Cover
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
A DIY attempt does not rule out a professional job. We cut it out and start again.
Towns and villages near Sandhills
Also in Sandhills
Why it’s worth doing now in Sandhills
Water gets in through a failed movement joint. Dealing with it early keeps the repair to the joint, rather than the wall around it. Older cottages and farmhouses around Sandhills can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
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.
Why book with us
- Sanitary silicone with an anti-fungal additive in wet areas
- You choose the colour before work begins
- Colour picked to suit the job
- Fully insured
Read our cost guide and customer reviews.
FAQs for Sandhills
Do you cover smaller places like Sandhills?
Yes. Sandhills is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you do external mastic in Sandhills?
Yes, Sandhills is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job.
What does external mastic cost?
It depends on the job, so we quote each one individually. For a quick quote, call 0345 464 0079 or email us with a short description of the job.
Do the sealants smell?
That depends on the sealant. Some smell for a while, some hardly at all.
Do you work for letting agents?
Yes, often. We can quote for several properties at once, and between tenancies is a good time for the work.
How often do external joints need resealing?
That varies with the weather the wall faces, how much it moves and the sealant used. Sealant is a maintenance item, so check the joints once a year and renew it when it starts to fail.
Can you do several jobs on one visit?
Yes, and it often makes sense. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
How long should I leave it?
It depends on the product and the temperature. Before we leave, we’ll tell you the cure time.
What we do, step by step
There’s no need to move everything out, just the space around the work. We protect the rest, and the work takes a few hours for a handful of joints, longer for a whole elevation for a typical job. For a village or hamlet like Sandhills, the journey is planned in advance: let us know about lanes, gates and parking. 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’ll reach them.
- The old mastic and anything lodged in the joint is removed.
- The joint faces are cleaned and primed where the sealant needs 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.
Preparing for the visit
- Tell us about any water getting in
- Let us know about earlier repairs to the joints
- Try not to wet indoor joints just before the visit
How to get a quote
Need a quote? Please phone 0345 464 0079 or send us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Read more
What external mastic looks like in Sandhills
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In the older streets around Church of All Saints, older walls, gutters and the joints where extensions meet them need a flexible sealant. If you look after a building such as King Edward's School Witley, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Sandhills is about 8 miles south-east of Farnham, in Surrey. Whether you’re in the middle of Sandhills or further out, we cover external mastic for every kind of property. Sandhills is one of 395 places in Surrey where we work for external mastic. We also work in Crawley, around 20 miles away.
All of GU8 is within our area for external mastic, from the main roads to the quietest streets. Local streets include Brook Road, Sebastopol Lane and Hatch Lane, and we cover them all. Nearby, we also carry out external mastic in Brook (1 mile west), Wormley (1 mile east), Hambledon (1 mile east), Bowlhead Green (1 mile west) and Witley (1 mile north). We also work in nearby towns such as Guildford (9 miles north-east), Woking (13 miles north), Camberley (14 miles north), Farnham (8 miles north-west), Frimley (13 miles north) and Haslemere (4 miles south-west).
Around Sandhills
In Sandhills, that means homes and buildings near Rodborough, Dog And Pheasant Public House and Witley CofE Controlled Infant School. Sandhills’s nearest station is Witley station, roughly 0.5 miles east of the centre. Well-known places in the area include Milford Hospital (2.7 miles north-east). The countryside around Sandhills includes Hydon's Ball and Farncombe Wood.
What we can’t put right
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Cracks in the bricks or render themselves, away from the joints
- Walls that need new movement joints cut into them
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think before booking.
Where we work in Sandhills
- Copings & trims
- Façade panels
- Brickwork movement joints
- Joints between brick and frames
- Concrete & block
- Render & cladding joints
What we are called out for in Sandhills
If plants are growing out of a joint, the sealant has generally failed or was never there. Roots and dirt hold water against the wall.
Signs it’s time to call us include:
- Sealant that has lost its bond to the brick or render
- Joints pointed up with cement by mistake
- Joints with sealant missing in places
- Failed sealant between panels on a façade
Rented homes near Witley station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Comparing quotes
- What insurance they hold
- What happens if the job turns out different
- Is the old sealant removed completely?
- Which sealant they’ll use, and why
Work for landlords, hotels and businesses
Letting agents often deal with us directly. Tell us the address, the job and how access works and we’ll give you a quote.
Landlords and letting agents in Sandhills can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.