West Berkshire · England
Chaddleworth Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Chaddleworth, with a 12-month guarantee on every job. Call for a quick quote.
- Mastic that needs renewing before redecorating
- Silicone on a period window that looks wrong
- Cracked mastic round a front door frame
Sand mastic for homes and businesses in Chaddleworth
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s made from sand and a linseed-oil-based binder and built up by hand. On older homes, it suits the building far better than silicone. We work on sash and case windows, brick reveals and stone surrounds, and people most often call us about gaps where the frame meets the masonry and tired mastic found when preparing windows for paint.
Somewhere as small as Chaddleworth, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
You get a one-year guarantee, the same in Chaddleworth as everywhere else we work.
- Place
- Chaddleworth (RG20)
- Region
- West Berkshire
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Common questions in Chaddleworth
Do you cover Chaddleworth for sand mastic?
Yes. Our work covers London and the South East, and Chaddleworth is part of that. You can phone 0345 464 0079 or drop us an email and let us know what needs doing, and we will give you a clear quote.
Is there a guarantee on sand mastic in Chaddleworth?
Every job comes with our one-year guarantee, wherever it is. We are fully insured, and an ARBOMaster approved applicator.
I rent my home. Can I book you?
Of course. Check with your landlord; we can send the quote to them too.
Is consent needed for window work on a listed home?
Your local planning authority is the one to ask. They’ll tell you if consent is needed for work to your windows.
Where are you based?
We’re based in Crawley, West Sussex, and we work across South East England, London and Scotland.
Do the sealants smell?
Sometimes, a little. It fades as the sealant cures.
Is it OK to seal over old sealant?
No, and we never do. It may look fine at first, but the new bead soon lifts. The old sealant has to come out completely.
Can landlords and businesses book you?
Yes, regularly. Several properties can go on one quote, and between tenancies is a good time for the work.
What we’re called out for in Chaddleworth
Timber frames move with the seasons. That movement opens up the mastic joint little by little.
These are the problems we are asked about most:
- Gaps between timber frames and stone or brick
- Mastic worn away on windows facing the weather
- Draughty sash windows at the surround
- Old sand mastic that has cracked, crumbled or fallen out
If you live in an older home near Church of St Andrew, the joint between an old wall and a newer frame is normally the first place rain gets in.
What to look for in a quote
- Whether VAT is included
- What product goes in the joint
- When the joint can take water or movement
- How much experience the applicator has
Towns and villages near Chaddleworth
More services for Chaddleworth
What sand mastic looks like in Chaddleworth
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.
If you look after a building such as Chaddleworth St Andrew's C.E. Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Chaddleworth is about 7 miles south of Wantage, in West Berkshire. For sand mastic in and around Chaddleworth, please ring 0345 464 0079 or send us an email for a quick quote. We cover West Berkshire from our Crawley base. Chaddleworth is one of 155 towns and villages in West Berkshire we cover. We also work in Reading, around 19 miles away.
Postcode districts we cover here for sand mastic: RG20. If you need sand mastic at a property on Main Street, Upper End and Tower Hill or anywhere close by, we can help. Neighbouring places we cover for sand mastic include Great Shefford (2 miles south-west), East Shefford (2 miles south-west), Weston (2 miles south-west), East Garston (3 miles west) and Easton (3 miles south). We also work in nearby towns such as Newbury (8 miles south-east), Thatcham (9 miles south-east), Speenhamland (7 miles south-east), Hungerford (8 miles south-west), Lambourn (5 miles west) and Shaw (7 miles south-east).
Local landmarks in Chaddleworth
The countryside around Chaddleworth includes Sole Common Pond.
DIY versus a professional finish
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.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
When it is not the sealant
We’ll always be straight with you, so here’s what new sealant won’t do:
- Whether work needs listed building consent
- Rotten sashes, sills or window boxes (a joiner’s job)
- Damaged stone surrounds
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly.
Surfaces we seal
- Period & listed homes
- Brick reveals
- Timber door frames
- Sash and case windows
- Stone surrounds
- Tenement windows
Different surfaces, different methods
Sash and case windows
Most of our sand mastic work is on sash windows. Each joint round the box is raked out and renewed.
Timber door frames
Door frames get knocked and soaked and the mastic can crack early. We rake it out and renew it.
Landlord and commercial work in Chaddleworth
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
How it works
On the day, there’s very little for you to do. Show us the job and we will take it from there. The job generally takes a few hours for a single window, longer for several, including the tidy-up. Somewhere like Chaddleworth needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First, we look at the surrounds with you and agree what needs doing.
- We rake out the old mastic and clean the joint.
- 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.
Preparing for the visit
- Move anything stored near the joints
- Plan for the work area to be out of bounds to pets and children
- Let us know about stairs, lifts or work at height
How to get a quote
Getting a quote is simple: let us know what needs doing and where. Photos by email help us understand the job, and we’ll take it from there.
Related advice
How to look after the new joints
Good habits help new joints last longer. A few tips:
- Check the mastic when you check the paintwork
- Don’t run silicone over sand mastic
- Ask a joiner to look at soft timber first
- Plan mastic work ahead of painting
Don’t touch or press the mastic while it hardens. It forms a skin fairly soon but needs longer to fully harden.
Small cracks are a sign the mastic is ageing. Renewing it then is simpler than waiting until it falls out.