Surrey · England
Sand mastic for sash & case windows in Onslow Village, Surrey
We cover Onslow Village for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.
- Silicone on a period window that looks wrong
- Gaps between timber frames and stone or brick
- Window mastic to renew ahead of painting
Do you need sand mastic in Onslow Village?
Paint, silicone or cement used over old mastic causes problems. They don’t suit the joint, and they generally need raking out.
Common reasons people contact us include:
- Window mastic to renew ahead of painting
- Modern sealant on a period surround
- Old sand mastic that has cracked, crumbled or fallen out
- Draughty sash windows at the surround
In the older streets around All Saints' Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
What to look for in a quote
- Who turns up on the day
- How long the guarantee is
- What the quote includes, VAT included or not
- Whether you can choose the colour
Sand mastic in Onslow Village, done properly
Across Onslow Village, we renew sand mastic around sash and case windows. Every joint is cleaned out and filled by hand, finished to suit the masonry. Common call-outs are for weathered mastic on the most exposed windows and wind and rain getting in round a sash window, on period & listed homes, sash and case windows and stone surrounds.
In smaller places like Onslow Village, homes range from older cottages to newer houses, with windows to match: timber, uPVC and aluminium. The right sealant depends on the frame and on what it sits in.
Whatever the size of the job, it’s backed by our one-year guarantee in Onslow Village and across Surrey.
- Location
- Onslow Village (GU2, GU3)
- Region
- Surrey
- Cover
- A year, on every job
- Price
- A clear price before work begins
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Nearby places to Onslow Village
More services for Onslow Village
Should I try it myself first?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
What happens on the day
The work is kept neat and contained to the joints we are treating, so you can carry on as normal. The job generally takes a few hours for a single window, longer for several. Parking around Onslow Village is normally easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- First, we look at the surrounds with you and agree what needs doing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic is not too thick.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Preparing for the visit
- Mention any parking rules near the property
- For indoor joints, keep the area dry beforehand if you can
- Mention any leaks or damp you’ve noticed
Getting a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. When it suits you, phone 0345 464 0079 or drop us an email.
Advice
What affects the cost of sand mastic
Call for a quick quote. What matters most is:
- Whether there’s mould to deal with
- The type of sealant required
- Whether old sealant or filler has to be cut out
- Any working-time requirements on site
What it costs depends on how much there is to do, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
What we need to know
Photos by email are helpful but not essential. Please mention:
- Where the job is, and your postcode
- Roughly how big the job is
- If it’s domestic, commercial or a hotel
- Pictures of the joints, sent by email
Getting a quote is simple: tell us what needs doing and where and its rough size. A few photos by email make the job easier to understand.
Surface by surface
Stone surrounds
We take care not to mark the stone when the old mastic comes out.
Period and listed homes
Sand mastic is the like-for-like choice for many period homes. If your home is listed, ask your local planning authority about consent.
What sealant work cannot fix
We will not take on work that will not last, so these are the limits:
- Timber that has rotted
- Crumbling stone or brickwork round the window
- Cracked or broken glass
If you’re not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer before you book.
Joints and surfaces we work on
- Stone surrounds
- Brick reveals
- Period & listed homes
- Sash and case windows
- Tenement windows
- Timber door frames
Looking after it afterwards
Looking after new joints is easy:
- Check the mastic when you check the paintwork
- Plan mastic work ahead of painting
- Keep modern sealant off the mastic
- Clear gutters so water doesn’t pour onto the windows
Don’t run silicone over the new mastic. If anything cracks, get it looked at rather than patching it.
Sound mastic protects the frame. Failed mastic lets water reach the timber, which can lead to rot.
What sand mastic looks like in Onslow Village
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Guildford Castle (about 1.3 miles east) are a reminder that the area around Onslow Village 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.
If you let a flat or house near Guildford station, older sash windows in a rental need their mastic kept sound to keep the weather out. If you look after a building such as Onslow Infant School, larger buildings have plenty of frames, and the mastic around each one ages.
Onslow Village is about 2 miles south-west of Guildford, in Surrey. Whether you are in the middle of Onslow Village or further out, sand mastic is available for homes and businesses alike. Our area takes in 395 places across Surrey. You can also see our page for Crawley, about 20 miles away.
We cover every part of GU2 and GU3 for sand mastic. Whether your property is on Gill Avenue, Farnham Road and Orchard Road or a nearby road, our applicators can take on the job. Onslow Village is on the A31, so it’s easy for us to get to with everything needed for sand mastic. Nearby, we also carry out sand mastic in Littleton (1 mile south), Wood Street Village (2 miles north-west), Compton (2 miles south-west), Binscombe (2 miles south) and Fairlands (2 miles north). Within a short drive, we also cover Woking (6 miles north), Camberley (9 miles north-west), Farnham (9 miles west), Egham (14 miles north), Walton-on-Thames (13 miles north-east) and Dorking (12 miles east).
Landmarks near Onslow Village
Locally, jobs take us to homes and businesses close to Guildford County School, Academy of Contemporary Music and Broadstreet. The closest station to Onslow Village is Guildford station, roughly 1 mile east of the centre. Well-known places in the area include Guildford Castle (1.3 miles east) and Guildford Cathedral Treasury (0.7 miles north-east). Green spaces nearby include Pewley Down and Lower Lake.
FAQs for Onslow Village
Do you cover Onslow Village for sand mastic?
Yes, Onslow Village is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or send us an email and let us know what needs doing.
Do you cover smaller places like Onslow Village?
Yes. Onslow Village is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
What’s sand mastic made of?
A traditional pointing material made from sand and a linseed-oil-based binder, used between timber frames and stone or brick.
Do you have insurance?
Yes. We’re fully insured for domestic and commercial work.
Can I do it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Which is right for my windows, sand mastic or modern sealant?
That depends on your windows. Period windows in stone or brick normally suit sand mastic and newer frames generally get a flexible sealant.
Is it possible to paint over sand mastic?
The usual advice is to leave sand mastic unpainted. If you are redecorating the window, ask us first and we’ll advise.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.