Surrey · England
External & façade joints in Grayswood, Surrey
Movement joints in Grayswood need attention? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Joints where the bead has come unstuck
- Weathered mastic that no longer stretches
- Joints with sealant missing in places
Can I do it myself?
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
About our external mastic in Grayswood
Getting the depth right is half the job. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, so it bonds to the two sides only and can stretch. We work on façade panels, brickwork movement joints and joints between brick and frames, and people most often call us about weathered mastic that no longer stretches and water getting into walls through failed joints.
In a village or hamlet like Grayswood, older cottages and farm buildings often stand in the open, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
Whatever the size of the job, it’s backed by our one-year guarantee.
- Location
- Grayswood (GU27)
- Wider area
- Surrey
- Cover
- 12 months on all our work
- Quotes
- A clear price before work begins
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What happens on the day
On the day, we look over the joints with you first. We protect the surfaces around the joints before any work begins. The work normally takes a few hours to a few days, depending on the length of joint and the access. For a village or hamlet like Grayswood, the journey is planned in advance: 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 look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Getting ready for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us about any water getting in
- Plan for the work area to be out of bounds to pets and children
Getting a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and add pictures by email if you can.
Related advice
Grayswood: your questions answered
Can you help a landlord with a rental near Haslemere station?
Yes, we work for letting agents and landlords. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before work begins.
Can you do external mastic in Grayswood?
Yes, Grayswood is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or email us with a few details of the job, and we’ll send you a clear quote.
Will the new joint stand out?
We aim for a joint that suits the wall rather than one that jumps out. Colour is agreed with you before we begin from the range available.
Are you an approved applicator?
Yes. We are approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Why is there a gap in my brick wall?
A vertical gap in a long brick wall is usually a movement joint. It gives the wall room to move and needs a flexible seal, not mortar.
Do you guarantee your work?
Yes, always. There’s a 12-month guarantee on every job, large or small.
How do you reach high-level joints?
Each building is different. Send us pictures and a rough idea of the height and we’ll confirm how they can be reached safely.
Should I try DIY first?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
How the job changes by surface
Copings and trims
Joints in copings, parapets and trims are exposed to the worst of the weather. Each is resealed with a weatherproof, flexible sealant.
Render joints
Cracks along render joints let water in behind the coat. A sound joint keeps the render dry behind and helps it last.
Walls and rooflines in Grayswood
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For landlords with property near Haslemere station, split movement joints are easy to miss on a rental until damp shows inside. Homes close to All Saints' Church include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
Grayswood is about 9 miles south-east of Farnham, in Surrey. We carry out external mastic for homes and businesses in Grayswood and nearby, as part of our work across Surrey. Our Surrey coverage runs to 395 places, and Grayswood is one of them. There’s also a page for Crawley, roughly 22 miles from Grayswood.
Our applicators cover all of the GU27 postcode area for external mastic. We cover properties on Lower Road, Ash Tree Close and The Mount. Other places close to Grayswood include Brook (2 miles north-east), Bowlhead Green (2 miles north), Chiddingfold (2 miles east), Sandhills (2 miles north-east) and Wormley (3 miles north-east). Larger places within reach include Guildford (11 miles north-east), Farnham (9 miles north-west), Frimley (15 miles north), Cranleigh (9 miles east), Ash (10 miles north) and Godalming (6 miles north-east).
Near you in Grayswood
Typical jobs here are in homes near The Wheatsheaf Inn. The nearest railway station is Haslemere station, roughly 1.7 miles south-west. Other landmarks nearby include Haslemere and District Hospital (1.2 miles south-west). Green spaces nearby include Lynchmere Commons and Gibbet Hill.
What happens if it’s left?
An open joint keeps letting water into the wall with every downpour. Wet masonry is more easily damaged by frost around the joint, so the problem grows beyond the joint itself. Older cottages and farmhouses around Grayswood can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Combining jobs into one visit generally makes better use of the time than several visits, so tell us about everything that needs sealing. We will give you a clear quote for the lot.
What you get with us
- A choice of colours where the product allows
- An ARBOMaster approved applicator
- Sealant colour chosen to suit
- Quality sealants from Arbo and Everbuild
Read our cost guide or customer reviews.
Aftercare tips
So the new joints stay in good condition:
- Don’t let climbing plants root in the sealant
- Tell anyone working on the walls about the movement joints
- Get split or bare joints resealed while the damage is small
- Walk round the building once a year and look at the joints
Keep the joints clear of soil, plants and climbing growth. Anything that holds water against the joint wears it out sooner.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.
Signs you need external mastic in Grayswood
If plants are growing out of a joint, the sealant has generally failed or was never there. Dirt and roots then trap moisture in the joint and speed up the damage.
The most common problems we see are:
- Rain getting behind render or cladding at a joint
- Brick movement joints where the sealant has split
- Rigid filler in a joint that should flex
- Hard, crazed mastic that has stopped moving
Schools such as Grayswood Church of England (Aided) Primary School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
What your quote should include
- Whether VAT is included
- How long to leave it before use
- Whether they seal over old material or remove it
- Which sealant they’ll use, and why
What affects the cost of external mastic
You’ll get a clear quote before any work starts. It’s based on:
- When we can work, for business premises
- How much there is to do
- Any mould that needs treating
- The product the joint needs
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are unsure, phone 0345 464 0079 or send us an email and we will give you an honest view and a quote.
What we need to know
When you contact us, these details help:
- What’s wrong with the joints now
- If someone has resealed it before
- Photos by email, if that is easy
- If it’s domestic, commercial or a hotel
Asking for a quote is easy: tell us what needs doing and where and its rough size. Photos by email help us understand the job, and we’ll come back to you with a quote.