Surrey · England
Sheet's Heath External Mastic
Professional external mastic in and around Sheet's Heath, with every bit of old sealant taken out first and a one-year guarantee.
- Sealant that has lost its bond to the brick or render
- Rigid filler in a joint that should flex
- Hard, crazed mastic that has stopped moving
External mastic for homes and businesses in Sheet's Heath
A movement joint is a deliberate break that lets a wall expand and contract. Its sealant has to flex with the building, season after season, so once it splits or hardens, the joint stops working and water gets in. If you’re dealing with brick movement joints where the sealant has split and rigid filler in a joint that should flex, we can help.
External sealant needs dry, clean surfaces, so work around Sheet's Heath is planned for dry weather. Tell us about access to all sides of the building, including outbuildings and garages.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Location
- Sheet's Heath (GU24)
- Region
- Surrey
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Why deal with it now?
A properly done movement joint is an even line in a colour that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner. Where a wall is exposed, as many are in small places like Sheet's Heath, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
A failed joint rarely gets cheaper to fix by waiting. If you’re unsure, phone 0345 464 0079 or send us an email and we will give you an honest view and a quote.
Why Sheet's Heath clients choose us
- Homes, businesses and hotels
- Old sealant always removed completely
- More than 20 years in sealant work
- Approved under the ARBOMaster scheme
Take a look at our cost guide or our reviews.
What happens on the day
On the day, we start by going over the job with you, so there are no surprises. Surfaces next to the work are protected before we start. Most jobs take anything from a few hours to several days, depending on the building. For a village or hamlet like Sheet's Heath, 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.
- Each joint is checked and the colour of the new sealant agreed.
- 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
- Mention any leaks or damp you’ve noticed
- Mention any tricky access
- Mention any parking rules near the property
How to get a quote
For a quote, call 0345 464 0079 or drop us an email with the location and a short description of the problem. We’ll send you a clear quote before any work starts.
Related advice
When to call us in Sheet's Heath
Weeds, moss and debris in a joint are a sign the sealant has gone. Dirt and roots then trap moisture in the joint and make things worse.
The most common problems we see are:
- Moss and dirt in joints with no sealant left
- Water getting into walls through failed joints
- Hard, crazed mastic that has stopped moving
- Failed seals between different materials
Homes close to Saint Saviour's Church include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
What to look for in a quote
- What the quote includes, VAT included or not
- Whether all the old sealant comes out first
- What the cure time is
- Are they insured?
Different surfaces, different methods
Concrete and blockwork
Big joints in concrete need careful depth control. Backing rod sized to the joint sets it so the sealant is not too deep.
Joints between dissimilar materials
Each side of the joint may need its own preparation. Both surfaces are cleaned and primed as the product requires.
What external mastic looks like in Sheet's Heath
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 Brookwood station, split movement joints are easy to miss on a rental until damp shows inside. For site and facilities teams at buildings such as Brookwood Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Sheet's Heath is about 3 miles west of Woking, in Surrey. Homes, rented property, offices and hotels in Sheet's Heath can book us for external mastic. The work is guaranteed for a year. Our Surrey coverage runs to 395 places, Sheet's Heath among them. Reading is on our list too, about 17 miles from Sheet's Heath.
Jobs for external mastic in GU24 is quoted and booked the same way as anywhere else. If you need external mastic at a property on Benwell Road, Sheet's Heath Lane and The Ridgeway or a nearby road, we can help. If you are just outside Sheet's Heath, we cover Brookwood (1 mile south), Knaphill (1 mile north-east), Bisley (1 mile north), Lucas Green (2 miles north) and West End (2 miles north). We also work in nearby towns such as Guildford (5 miles south-east), Woking (3 miles east), Camberley (4 miles north-west), Farnham (10 miles south-west), Egham (9 miles north-east) and Walton-on-Thames (11 miles north-east).
Landmarks near Sheet's Heath
We work in homes and buildings around Knowl Hill School, Brookwood Lye and Nag's Head Inn. The nearest railway station is Brookwood station, about 0.5 miles south of the centre. Nearby you’ll also find The Museum of The National Rifle Association (0.8 miles west) and Brookwood Hospital (0.9 miles east). Green spaces nearby include Brookwood Lye.
Nearby places to Sheet's Heath
Also in Sheet's Heath
Work for landlords, hotels and businesses
If you manage several properties in or around Sheet's Heath, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
How we quote for external mastic
The quote reflects the job in front of us. We take into account:
- The old material and how stubborn it is
- Which sealant suits the joint
- Whether there’s mould to deal with
- The size of the job
What it costs depends on the amount of work, how hard the old material is to remove and access to the work. We give a clear quote before we start.
What to tell us for a quote
To help us quote quickly, let us know:
- Pictures of the joints, sent by email
- Where the job is, and your postcode
- How many joints, rooms or windows are involved
- What the problem is, such as mould, gaps, leaks or cracking
For external mastic in Sheet's Heath, phone 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
When it is not the sealant
It helps to know what we cannot do too:
- Rising or penetrating damp from elsewhere in the wall
- Structural movement, which needs a surveyor or engineer
- Loose or hollow render, which needs re-rendering
If you’re not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer before you book.
Joints and surfaces we work on
- Render & cladding joints
- Concrete & block
- Façade panels
- Joints between brick and frames
- Copings & trims
- Brickwork movement joints
Questions from Sheet's Heath
Is Sheet's Heath in your area for external mastic?
Yes. Our work covers London and the South East, and Sheet's Heath is part of that. Just ring 0345 464 0079 or email us with a few details of the job.
Can you help a landlord with a rental near Brookwood station?
Yes, landlords and agents are among the people we work for. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
Will the old sealant be removed?
Always. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Where do you work from?
Our base is in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
Do you hold any approvals?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
What colours does the sealant come in?
There’s a good range of exterior colours, including greys, browns, whites and stone tones. We choose the closest to your brick or render so the joint does not draw the eye.
Do you use backing rod?
Backing rod goes into deeper joints as a matter of course. It sets the sealant depth and prevents three-sided bonding.
Can I do it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.