Surrey · England
Sand Mastic in Gatton
Professional sand mastic in and around Gatton, with old sealant always removed completely.
- Failed mastic on an exposed elevation
- Cement or filler used on old window joints that has cracked
- Tired mastic found when preparing windows for paint
What sand mastic looks like in Gatton
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
In the older streets around St Andrew's Church, the joint between an old wall and a newer frame is normally the first place rain gets in. Letting a property close to Merstham station? Then older sash windows in a rental need their mastic kept sound to keep the weather out. If you look after a building such as Lime Tree Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Gatton is about 2 miles north of Redhill, in Surrey. Across the RH2 area, we cover sand mastic for homes and businesses. Gatton is one of 395 places in Surrey we cover for sand mastic. There’s also a page for Crawley, about 11 miles away.
Every address in RH2 and RH1 is within our area for sand mastic. Sand mastic is available to properties on Rocky Lane and Gatton Bottom and the roads around them. We also cover the places around Gatton: South Merstham (1 mile east), Holmethorpe (1 mile south-east), Merstham (1 mile north-east), Mugswell (1 mile north-west) and Redhill (2 miles south). Larger places within reach include Epsom (7 miles north-west), Horley (6 miles south), Ewell (7 miles north-west), Walton-on-Thames (13 miles north-west), Caterham (4 miles north-east) and Dorking (7 miles west).
Near you in Gatton
We work in homes and buildings around East Surrey College, Nutfield Marshes and St Bede's School, among other places. The nearest railway station is Merstham station, about 1 mile east of the centre. Other landmarks nearby include East Surrey Hospital (3.1 miles south) and The Belfry (1.6 miles south). For a walk, there’s Colley Hill and Mercers Lake.
Sand mastic in Gatton
Sand mastic does not last for ever, leaving gaps round the window. Renewing it closes the gap and tidies the surround. Typical jobs include tired mastic found when preparing windows for paint and old cement repairs round a window that have failed, on brick reveals, sash and case windows and timber door frames.
In a village or hamlet like Gatton, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
A 12-month guarantee comes as standard, so you are not left on your own once the job is done.
- Location
- Gatton (RH2, RH1)
- Wider area
- Surrey
- Guarantee
- One year on every job
- Quote
- A clear price before we start
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Different surfaces, different methods
Tenement and terrace windows
Windows above ground floor need the right access. Let us know the floor and we’ll confirm access.
Timber door frames
Period doors in stone or brick openings are often pointed with sand mastic. The method is the same as for windows.
Looking after it afterwards
Simple care keeps the joints in good condition. Our advice:
- Find out about consent before window work on a listed home
- Sort the mastic before the decorators arrive
- Do not run silicone over sand mastic
- Don’t paint over the new mastic
Leave the new mastic unpainted, which is the traditional advice. Ask us before any decorating around it.
Fine cracks show the mastic is starting to fail. It’s easier to renew it before it drops out.
Should I try it myself first?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
How it works
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The job generally takes a few hours per window, depending on the condition of the joints. Somewhere as small as Gatton, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic is not too thick.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
How to prepare
- Mention any parking rules near the property
- Try not to wet indoor joints just before the visit
- Plan for the work area to be out of bounds to pets and children
Getting a quote
If you are in Gatton and need sand mastic, phone 0345 464 0079 or send us an email. Tell us what the problem is and where, and you’ll get a clear quote before we start.
Advice
Common questions in Gatton
Can you help a landlord with a rental near Merstham station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can phone 0345 464 0079 or email us with the details for a clear quote.
Do you cover smaller places like Gatton?
Yes, Gatton is covered. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can you seal over the old sealant?
No, because it fails. The old sealant always comes out first.
Do you offer different sealant colours?
Normally, yes. Sealants come in white, clear, grey and other colours for many products, and we’ll agree it with you first.
Can I do it myself?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
Can you quote for more than one area?
Yes. Just list everything you need and you will get one quote.
How much does sand mastic cost in Gatton?
It depends on the job, so we quote each one individually. For a quick quote, phone 0345 464 0079 or send us an email with a short description of the job.
Can old silicone round a sash window be swapped for sand mastic?
Yes, it’s a common request. All the old silicone is removed first so the mastic beds in well.
Towns and villages near Gatton
What else we do in Gatton
How we quote for sand mastic
Every job gets its own quote. These are the things that affect it:
- The amount of work
- Mould in or behind the old joints
- The type of sealant required
- Working hours on commercial sites
What you pay reflects the work, not guesswork. That is why we ask a few questions first.
Asking for a quote
When you call or email, these details help:
- Access, such as stairs, a lift or height
- Where the property is
- Pictures of the joints, sent by email
- If someone has resealed it before
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job, and we’ll come back to you with a quote.
Landlords, agents and businesses in Gatton
If you manage several properties in or around Gatton, jobs at different addresses can be quoted together. Send us the addresses and the work at each.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
What we cannot put right
Before booking, it’s worth knowing the limits too:
- Crumbling stone or brickwork round the window
- Timber that has rotted
- Cracked or broken glass
If you are not sure, just ring 0345 464 0079 or send us an email and we will give you a straight answer.
Where we work in Gatton
- Tenement windows
- Timber door frames
- Stone surrounds
- Period & listed homes
- Brick reveals
- Sash and case windows