Surrey · England
Sand mastic for sash & case windows in Sandhills, Surrey
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Sandhills, with a one-year guarantee on every job. Ask us for a quote.
- Open joints round the window box
- Draughty sash windows at the surround
- Weathered mastic on the most exposed windows
How we handle sand mastic in Sandhills
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s a mix of sand and a linseed-oil-based binder, applied by hand. On period homes, it looks right where silicone wouldn’t. We work on timber door frames, sash and case windows and brick reveals, and common reasons people get in touch are cement or filler used on old window joints that has cracked and a silicone bead on a sash window that spoils the look.
Homes in small places like Sandhills often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
The work is covered for a year after we finish. If anything isn’t right with it, call 0345 464 0079 or email us.
- Place
- Sandhills (GU8)
- Wider area
- Surrey
- Guarantee
- One year on every job
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Sandhills: your questions answered
Do you work for landlords with property near Witley station?
Yes. We work for letting agents and landlords as well as homeowners, and several properties can go on one quote. You can ring 0345 464 0079 or email us with the details for a clear quote.
Will you come out to Sandhills?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you match the sealant colour?
We’ll suggest a colour to suit the surroundings, from white and clear to greys and other shades. The choice depends on the product the joint needs.
How do I get a quote for sand mastic in Sandhills?
Size, access and the old material all affect the cost. Ask us for a quote and we will talk you through it.
Will it make a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
What sealant do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We explain the product when we quote.
How long does sand mastic take to harden?
Not right away. It skins first and hardens fully later, and we will tell you what to expect.
Do you hold any approvals?
Yes. We are approved under the ARBOMaster scheme.
Also near Sandhills
What else we do in Sandhills
What sand mastic looks like in Sandhills
London and the South East are among 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 live in an older home near Church of All Saints, frames set in older brick or stone need a sealant that suits the wall as well as the frame. If you let a flat or house near Witley station, any sash windows need sound mastic to keep draughts and rain out.
Sandhills is about 8 miles south-east of Farnham, in Surrey. Whether you’re in the middle of Sandhills or further out, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. Sandhills is one of 395 towns and villages in Surrey where we work. Our Crawley page covers work nearby (20 miles or so).
All of GU8 is covered for sand mastic. Sand mastic is available to properties on Brook Road, Sebastopol Lane and Hatch Lane. If you’re just outside Sandhills, we cover Brook (1 mile west), Wormley (1 mile east), Hambledon (1 mile east), Bowlhead Green (1 mile west) and Witley (1 mile north). We also work in nearby towns such as Guildford (9 miles north-east), Woking (13 miles north), Camberley (14 miles north), Farnham (8 miles north-west), Frimley (13 miles north) and Haslemere (4 miles south-west).
Landmarks near Sandhills
In Sandhills, that means homes and buildings near Rodborough, Dog And Pheasant Public House and Witley CofE Controlled Infant School, among other places. Sandhills’s nearest station is Witley station, roughly 0.5 miles east. Well-known places in the area include Milford Hospital (2.7 miles north-east). Green spaces nearby include Hydon's Ball and Farncombe Wood.
How we quote for sand mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- Any mould that needs treating
- The number and length of the joints
- Whether old sealant or filler has to be cut out
- Which sealant suits the joint
The cost reflects the work involved, not a rough estimate. That’s why we ask about the job first and agree the price before starting.
Asking for a quote
To help us quote quickly, please include:
- Photos by email, if that is easy
- What’s wrong with the joints now
- The type of property
- The rough size of the job
For sand mastic in Sandhills, call 0345 464 0079 or send us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
Leave it or put it right?
Filling over old, loose mastic does not last. Raking out and preparing the joint gives it a sound base so the new work lasts. Older cottages and farmhouses around Sandhills can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all make a difference.
What you get with us
- 20+ years of sealant experience
- Quality sealants from Arbo and Everbuild
- Experience in homes, commercial sites and hotels
- We leave the area clean and tidy
Read what affects the cost or what customers say.
What happens on the day
Good joint work is mostly preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours for a single window, longer for several. Somewhere as small as Sandhills, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- We dress the surface so it sits neatly against the masonry.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Mention any leaks or damp you’ve noticed
- Mention any parking rules near the property
How to get a quote
Asking for a quote is easy: tell us what needs doing and where. Photos by email help us understand the job, and we will come back to you with a quote.
Related advice
Landlord and commercial work in Sandhills
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
What we’re called out for in Sandhills
Paint, silicone or cement used over old mastic causes problems. They do not suit the joint and we normally remove them.
Look out for these signs:
- Mastic that needs renewing before redecorating
- Weathered mastic on the most exposed windows
- A silicone bead on a sash window that spoils the look
- Mastic round period door frames that has failed
If you look after a building such as King Edward's School Witley, its window and door frames need their mastic kept sound, just like a home’s.
Before you book anyone
- What guarantee comes with the work
- How long to leave it before use
- What insurance they hold
- Whether they seal over old material or remove it
Can I do it myself?
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Different surfaces, different methods
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.
Stone surrounds
Sand mastic sits naturally against stone. The finish blends with the masonry.