Surrey · England
Sand mastic for sash & case windows in Charleshill, Surrey
Sand mastic in Charleshill from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- A silicone bead on a sash window that spoils the look
- Old cement repairs round a window that have failed
- Wind and rain getting in round a sash window
How we handle sand mastic in Charleshill
We renew sand mastic around sash windows and doors set in stone or brick. Out comes the old, loose mastic, and new mastic is applied and shaped by hand. We work on period & listed homes, stone surrounds and brick reveals, and the jobs we see most are open joints round the window box and modern sealant on a period surround.
In a village or hamlet like Charleshill, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these don’t always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
We stand behind the work with a 12-month guarantee, so you’re not left on your own once the job is done.
- Where
- Charleshill (GU10)
- Region
- Surrey
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Should I try it myself first?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Places near Charleshill
Other services in Charleshill
Work for landlords, hotels and businesses
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
For anyone letting property in or around Charleshill, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
What we do, step by step
The work is kept neat and contained to the area we’re working on, so you can get on with your day. Expect the work to take anything from a few hours to a full day, depending on how many windows, and we explain the cure time before we leave. Somewhere like Charleshill needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
Before we arrive
- Let us know about parking restrictions
- Plan for the work area to be out of bounds to pets and children
- Tell us about any water getting in
How to get a quote
Every job is quoted individually, so start by telling us what you need. Simply phone 0345 464 0079 or send us an email and describe the job.
Read more
What happens if it’s left?
Draughts round a sash window are not always the sashes. Open mastic joints round the box can let air in and new mastic seals them. Older cottages and farmhouses around Charleshill can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, along with when we can work on site. Ask us for a quote and we will explain what it covers.
Why Charleshill clients choose us
- 180+ five-star Google reviews
- Every job guaranteed for a year
- Neat joints and a tidy finish
- Approved under the ARBOMaster scheme
How to look after the new joints
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Sort the mastic before the decorators arrive
- Ask the planning authority about consent for listed or conservation-area homes
- Get any rot dealt with first
- Inspect the joints round the windows every year or so
Leave the new mastic alone while it firms up. It forms a skin fairly soon, but takes longer to harden fully.
Fine cracks show the mastic is starting to fail. It’s easier to renew it before it drops out.
What affects the quote in Charleshill
Jobs vary more than people expect. What affects the quote:
- The product the joint needs
- The size of the job
- How easy the joints are to reach
- The old material and how stubborn it is
Combining jobs into one visit is usually more efficient than separate visits. You’ll get one clear quote for the whole job.
What we need to know
Before you ask for a quote, have a think about:
- What’s wrong with the joints now
- The type of property
- If someone has resealed it before
- Where the property is
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.
What sealant work can’t fix
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Planning or listed building consent (your local planning authority decides)
- Timber that has rotted
- Damaged stone surrounds
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think before you book.
Joints and surfaces we work on
- Timber door frames
- Tenement windows
- Sash and case windows
- Period & listed homes
- Brick reveals
- Stone surrounds
Frames and glazing around Charleshill
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Farnham Castle (about 3.8 miles north-west) are a reminder that the area around Charleshill has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
For site and facilities teams at buildings such as Waverley Abbey CofE Junior School, the mastic around its windows and doors needs looking after like any other building’s. In the older streets around Church of St James, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Rented homes near Farnham station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about.
Charleshill is about 3 miles south-east of Farnham, in Surrey. If you need sand mastic in Charleshill, please ring 0345 464 0079 or email us for a quick quote. We cover Surrey from our Crawley base, Charleshill included. Charleshill is one of 395 places in Surrey we cover for sand mastic. Our Reading page covers work nearby, about 21 miles away.
Jobs for sand mastic in GU10 is quoted and booked the same way as anywhere else. You will find streets such as Farnham Road and Whitmead Road. With the B3001 close by, Charleshill is easy for our applicators to reach. If you’re just outside Charleshill, we cover Tilford (1 mile west), Elstead (1 mile south-east), Tilford Common (2 miles south-west), Tilford Reeds (2 miles west) and Rushmoor (3 miles south-west). We also work in nearby towns such as Guildford (8 miles north-east), Woking (11 miles north-east), Camberley (10 miles north), Farnham (3 miles north-west), Frimley (8 miles north) and Haslemere (7 miles south).
Landmarks near Charleshill
Locally, jobs take us to homes and businesses close to The Donkey pub and Thundry Meadows, among other places. Charleshill’s nearest station is Farnham station, roughly 3.2 miles north-west of the centre. Nearby you’ll also find Museum of Farnham (3.7 miles north-west) and Milford Hospital (4.6 miles east). Not far away are Runfold Wood and Upper Lake.
Common questions in Charleshill
Is Charleshill within the area you cover?
Yes. Charleshill is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is Charleshill in your area for sand mastic?
Yes, Charleshill 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.
Do you have insurance?
Yes. We’re fully insured for every job we do.
Can you quote for more than one area?
Yes, and it often makes sense. Doing several areas at once is usually more efficient, so mention them when you ask for a quote.
Are you an approved applicator?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Do you work for letting agents?
Yes. As well as householders, we work for landlords, agents, businesses and hotels in Charleshill.
Will there be a smell?
It depends on the product. Some smell for a while, some hardly at all.
Should I try DIY first?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.