Surrey · England
Sand mastic for sash & case windows in Sandy Cross, Surrey
Specialist sand mastic for Sandy Cross: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Gaps round a timber door in stone or brick
- Wind and rain getting in round a sash window
- Weathered mastic on the most exposed windows
What the job involves on each surface
Tenement and terrace windows
Rows of sash windows on tenements and terraces often need renewing together. We work on single windows or whole elevations.
Stone surrounds
Old stone surrounds are often uneven, so the joint varies in width. We shape it by hand to follow the stone.
Sand mastic in Sandy Cross
We renew sand mastic around sash windows and doors set in stone or brick. The old mastic is raked out, and new mastic is applied and shaped by hand. Common call-outs are for window mastic to renew ahead of painting and gaps round a timber door in stone or brick, on period & listed homes, stone surrounds and tenement windows.
Outdoor sealant needs dry, clean surfaces, so work on frames around Sandy Cross is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
We stand behind the work with a 12-month guarantee.
- Place
- Sandy Cross (GU10)
- Region
- Surrey
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
How to look after the new joints
Looking after new joints is easy, and it makes a real difference:
- Get any rot dealt with first
- Take care around the mastic when scraping paint
- Find out about consent before window work on a listed home
- Inspect the joints round the windows every year or so
Avoid painting over the new mastic, which is the traditional advice. If you are redecorating, ask us first.
An open joint round the box lets weather through. Left, the gap tends to get bigger as more mastic falls out.
What happens if it’s left?
If you’re redecorating, renew the mastic first. Paint over cracked mastic won’t stop the gaps, and the new mastic is traditionally left unpainted. Around Sandy Cross, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why book with us
- More than 20 years in sealant work
- We leave the area clean and tidy
- Any old sealant cut out fully, not covered over
- Arbo and Everbuild products
Take a look at how sealant jobs are priced and customer reviews.
How we quote for sand mastic
You’ll get a clear quote before work begins. It takes into account:
- Whether old sealant or filler has to be cut out
- Working hours on commercial sites
- Any mould that needs treating
- The type of sealant required
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re unsure, ring 0345 464 0079 or email us for an honest opinion and a quote.
What to tell us for a quote
When you call or email, it’s useful to know:
- Roughly how big the job is
- Access, such as stairs, a lift or height
- The problem you’ve noticed
- Where the property is
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. When it suits you, phone 0345 464 0079 or send us an email.
Sandy Cross homes and the weather
With historic houses such as Farnham Castle (about 3 miles west) nearby, there’s older building stock in the area around Sandy Cross as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you look after a building such as St Paul's CofE Infant School & Nursery, the mastic around its windows and doors needs looking after like any other building’s. If you let a flat or house near Aldershot station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Sandy Cross is about 2 miles south-east of Aldershot, in Surrey. Across the GU10 area, we cover sand mastic for homes and businesses. We cover 395 towns and villages across Surrey, from the larger towns to small villages. We also work in Reading, around 19 miles away.
Work in GU10 works the same way as everywhere else we cover. You’ll find streets such as Seale Lane and Binton Lane, all of which we cover. Nearby, we also carry out sand mastic in Seale (1 mile east), The Sands (1 mile south), Tongham (1 mile north), Runfold (1 mile south-west) and Badshot Lea (1 mile west). We also work in nearby towns such as Guildford (7 miles east), Woking (9 miles north-east), Camberley (8 miles north), Farnham (3 miles west), Frimley (6 miles north) and Haslemere (9 miles south).
Around Sandy Cross
Around Sandy Cross, our work takes us to homes and buildings near Aldershot Park, The White Hart pub and The Connaught School, among other places. For rail, the closest station is Aldershot station, about 2.1 miles north-west. Nearby you’ll also find Guildford Hospital (5.5 miles east) and Farnham Castle (3 miles west). Not far away are Aunt's Pool and Culverswell Hill.
What else we do in Sandy Cross
What sealant work can’t fix
New sealant can’t fix everything, and we will tell you before we start. It will not solve:
- Masonry that needs repairing
- Broken panes
- Sashes that rattle, stick or will not open
If in doubt, call 0345 464 0079 or email us and we will say what we think.
Joints and surfaces we work on
- Stone surrounds
- Sash and case windows
- Period & listed homes
- Tenement windows
- Timber door frames
- Brick reveals
What happens on the day
We bring everything the job needs with us, so you don’t need to buy or prepare anything. Once we’ve agreed what’s being done, the area is protected and the work begins. It normally takes a few hours for a single window, longer for several. In a small place like Sandy Cross, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
Preparing for the visit
- For business premises, tell us about site rules or sign-in
- Clear the area around the work
- For indoor joints, keep the area dry beforehand if you can
Getting a quote
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or send us an email.
Related advice
Your questions about sand mastic in Sandy Cross
Will you come out to Sandy Cross?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Can you help a landlord with a rental near Aldershot station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can call 0345 464 0079 or send us an email with the details for a clear quote.
Should I use sand mastic or silicone?
For period timber windows in stone or brick, sand mastic is often the better fit. On modern frames, we’d normally use a flexible sealant.
Will you leave a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Are you an approved applicator?
Yes. We are an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
Where are you based?
We work from Crawley. We cover Sandy Cross and the rest of Surrey.
Are you fully insured?
Yes, we’re fully insured for every job we do.
What does sand mastic cost?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Common problems we fix in Sandy Cross
Some old mastic was never deep enough. Mastic that is too thin cracks and drops out so we make sure the new mastic is the right thickness.
It’s worth asking for a quote if you see:
- Gaps where the frame meets the masonry
- Modern sealant on a period surround
- Mastic round period door frames that has failed
- Cement or filler used on old window joints that has cracked
Homes close to Church of St Laurence include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Questions to ask before booking
- What happens if the job turns out different
- Are they insured?
- How much experience the applicator has
- What the cure time is