West Berkshire · England
Sand mastic for sash & case windows in Bishop's Green, West Berkshire
Sand mastic for Bishop's Green, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Old cement repairs round a window that have failed
- Draughts and rain around sash boxes
- Cracked mastic round a front door frame
Sand mastic in Bishop's Green, done properly
Old sand mastic cracks, crumbles and falls out over time, leaving gaps round the window. Renewing it closes the gap so the surround looks right again. We work on timber door frames, tenement windows and sash and case windows, and people most often call us about gaps round a timber door in stone or brick and old cement repairs round a window that have failed.
Homes in small places like Bishop's Green 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 guaranteed for twelve months. If something isn’t right with it in that time, tell us and we’ll put it right.
- Where
- Bishop's Green (RG20)
- Wider area
- West Berkshire
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Common questions in Bishop's Green
Will you come out to Bishop's Green?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you help a landlord with a rental near Newbury Racecourse station?
Yes. We work for landlords and letting agents as well as householders. You can ring 0345 464 0079 or send us an email with the details for a clear quote.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Is consent needed for window work on a listed home?
It’s best to ask your local planning authority first. Like-for-like sand mastic is often the preferred finish but the decision is theirs.
Can sand mastic be painted?
It’s traditionally left unpainted, as guidance on traditional windows advises. Ask us before decorating.
Do you do commercial work?
Yes. We have worked for hotels, offices and other businesses and we are fully insured.
Is it messy?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Do you offer different sealant colours?
In most cases you can choose. We’ll explain which colours are available and agree one before we start.
The process
On the day, we start by going over the job with you. We protect the surfaces around the joints before any work begins. The work usually takes a few hours for a single window, longer for several. Somewhere as small as Bishop's Green, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic is not too thick.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
How to prepare
- Mention any parking rules near the property
- Mention any sign-in or site rules at work premises
- Mention any tricky access
Get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. Whenever you are ready, call 0345 464 0079 or drop us an email.
Advice
Quotes for sand mastic in Bishop's Green
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Whether the work is at height
- How much old sealant there is and how hard it is to remove
- The amount of work
- Any mould that needs treating
Doing several joints on one visit usually makes better use of the time than several visits. We’ll give you a clear price for the lot.
Helping us quote
When you contact us, these details help:
- Roughly how big the job is
- A few photos by email, if you can
- If someone has resealed it before
- The problem you’ve noticed
For a quote, call 0345 464 0079 or email us and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
When it isn’t the sealant
We’d rather tell you now than do work that won’t last, so these are the limits:
- Damaged stone surrounds
- Rotten sashes, sills or window boxes (a joiner’s job)
- Cracked or broken glass
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly before you book.
Surfaces we seal
- Sash and case windows
- Brick reveals
- Tenement windows
- Timber door frames
- Period & listed homes
- Stone surrounds
Landlords, agents and businesses in Bishop's Green
For anyone letting property in or around Bishop's Green, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
Hotels need rooms back in use, so we plan the work room by room. We have worked in hotels as well as homes and businesses.
When to call us in Bishop's Green
Some old mastic was never deep enough. A thin layer does not hold well so we make sure the new mastic is the right thickness.
Most people get in touch when they notice something like this:
- Silicone on a period window that looks wrong
- Crumbling sand mastic round a window
- Draughty sash windows at the surround
- Mastic round period door frames that has failed
If you live in an older home near Church of St Peter, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Before booking anyone
- What the quote includes, VAT included or not
- What preparation is included
- What guarantee comes with the work
- Are they insured?
Towns and villages near Bishop's Green
What else we do in Bishop's Green
Different surfaces, different methods
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. The gap round it is pointed with sand mastic.
Tenement and terrace windows
Rows of sash windows on tenements and terraces often need renewing together. We can do one window or several.
DIY sealant or a professional job?
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.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
What sand mastic looks like in Bishop's Green
With historic houses such as Shaw House (about 3.6 miles north-west) nearby, there’s older building stock in the area around Bishop's Green as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. 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.
Schools such as Cheam School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. Letting a property close to Newbury Racecourse station? Then any sash windows need sound mastic to keep draughts and rain out.
Bishop's Green is about 3 miles south of Thatcham, in West Berkshire. Homes, rented property, offices and hotels in Bishop's Green can book us for sand mastic. Every job comes with our one-year guarantee. Across West Berkshire, we cover 155 places, and Bishop's Green is one of them. You can also see our page for Reading, about 14 miles away.
All of RG20 is within our area for sand mastic, from the main roads to the quietest streets. We cover properties on Beech Road, Kestrel Gardens and Peregrine Road and the roads around them. Close by, we work in Heads Hill (1 mile north-east), Headley (1 mile east), Bury's Bank (1 mile north), Mill Green (2 miles east) and Plastow Green (2 miles east). We also work in nearby towns such as Newbury (3 miles north-west), Thatcham (3 miles north), Burghfield Common (10 miles east), Speenhamland (3 miles north-west), Hungerford (11 miles west) and Spencers Wood (14 miles east).
Local landmarks in Bishop's Green
Around Bishop's Green, our work takes us to homes and buildings near New Greenham Park and The Clere School, among other places. For rail, the closest station is Newbury Racecourse station, roughly 2.6 miles north-west. Other landmarks nearby include Old Chapel Textile Centre (0.7 miles north) and Donnington Castle (4.5 miles north-west). For a walk, there’s Ladle Hill and Audrey's Meadow.