Surrey · England
Sand mastic for sash & case windows in Mindenhurst, Surrey
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for householders, landlords and businesses in Mindenhurst. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Old cement repairs round a window that have failed
- Crumbling sand mastic round a window
- Window mastic to renew ahead of painting
Sand mastic for homes and businesses in Mindenhurst
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. If you’re dealing with open joints round the window box and cracked mastic round a front door frame, we can help, whatever the surface.
Somewhere as small as Mindenhurst, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, so the sealant has to be chosen to suit the building.
Each job carries a 12-month guarantee, whatever its size.
- Location
- Mindenhurst (GU16, GU24)
- Wider area
- Surrey
- Cover
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
When something else is needed
New sealant can’t fix everything, and we’ll tell you before any work starts. It won’t solve:
- Sash cords, weights and draught-proofing of the sashes
- Cracked or broken glass
- Whether work needs listed building consent
If you are not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer.
Where we work in Mindenhurst
- Period & listed homes
- Timber door frames
- Brick reveals
- Stone surrounds
- Sash and case windows
- Tenement windows
The process
You do not need to clear the whole room or building before we come, just the space around the work. We protect the rest, and the work takes a few hours per window, depending on the condition of the joints in most cases. For a village or hamlet like Mindenhurst, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic isn’t too thick.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Before we arrive
- Let us know if you’ve seen damp or leaks
- Let us know about parking restrictions
- On commercial sites, let us know about site rules
How to get a quote
Getting a quote is simple: 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 take it from there.
Related advice
Your questions about sand mastic in Mindenhurst
Do you cover Mindenhurst for sand mastic?
Yes. Our work covers London and the South East, and Mindenhurst is part of that. You can call 0345 464 0079 or drop us an email and tell us what needs doing, and we’ll give you a clear quote.
Is Mindenhurst within the area you cover?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
How long will you be here?
Most jobs take a few hours per window, depending on the condition of the joints, including the preparation. We will confirm how long when we quote.
Is consent needed for window work on a listed home?
Check with your local planning authority. They decide whether consent is needed.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint.
What’s sand mastic made of?
It’s sand mixed with a linseed-oil-based binder, used between timber frames and stone or brick.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status and we’re fully insured too.
Is it possible to take out silicone and use sand mastic instead?
In most cases. We remove the silicone and clean the joint before the sand mastic goes in.
For landlords and businesses
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Keeping the joints in good condition
After the cure time, these simple habits help:
- Don’t run silicone over sand mastic
- Inspect the joints round the windows every year or so
- Get any rot dealt with first
- Go gently near the mastic when preparing windows
Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber and timber that stays wet can rot.
What affects the cost of sand mastic
Every job gets its own quote. These are the things that affect it:
- Working hours on commercial sites
- The type of sealant required
- Mould in or behind the old joints
- How many rooms, windows or areas are involved
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we will go through it with you.
What we need to know
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Roughly how big the job is
- Where the property is
- Whether it has been sealed before
- What’s wrong with the joints now
Want a quote for sand mastic? Please ring 0345 464 0079 or send us an email and tell us about the job. We will explain what we’d do and give you a clear quote before work begins.
How the job changes by surface
Sash and case windows
Sash windows are where we do most sand mastic work. Each joint round the box is raked out and renewed.
Tenement and terrace windows
Rows of sash windows on tenements and terraces often need renewing together. We can do one window or several.
Can I do it myself?
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
What sand mastic looks like in Mindenhurst
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Managing a site like Sandringham Infant & Nursery School? Then its window and door frames need their mastic kept sound, just like a home’s. For landlords with property near Farnborough North station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Mindenhurst is about 1 mile south-east of Frimley, in Surrey. If you need sand mastic in Mindenhurst, it’s easy to get a quote: please phone 0345 464 0079 or email us. We’re based in Crawley and cover Surrey, Mindenhurst included. Our Surrey coverage runs to 395 places, and Mindenhurst is one of them. You can also see our page for Reading, about 16 miles away.
Work in GU16 and GU24 works the same way as everywhere else we cover. Whether your property is on Heath Lane, Tram Avenue and Woodend Road or a nearby road, our applicators can take on the job. Nearby, we also carry out sand mastic in Sheet's Heath (3 miles east), Brookwood (3 miles east), Lucas Green (3 miles north-east), Donkey Town (3 miles north-east) and Bisley (3 miles north-east). Within a short drive, we also cover Guildford (7 miles south-east), Woking (5 miles east), Farnham (8 miles south-west), Egham (11 miles north-east), Walton-on-Thames (14 miles north-east) and Staines-upon-Thames (12 miles north-east).
Landmarks near Mindenhurst
Typical jobs here are in homes near Frimley Lodge Park, Tomlinscote School and Tomlinscote School and the streets around them. The closest station to Mindenhurst is Farnborough North station, about 1.9 miles west of the centre. Other landmarks nearby include The Museum of The National Rifle Association (1.9 miles east) and Frimley Park Hospital (2.1 miles north-west). For a walk, there’s Ash Ranges and Danger Hill.