West Berkshire · England
Sand mastic for sash & case windows in Lower Green, West Berkshire
Sand mastic for Lower Green and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Gaps round a timber door in stone or brick
- Mastic that needs renewing before redecorating
- Gaps where the frame meets the masonry
About our sand mastic in Lower Green
If your home is listed or in a conservation area, check with your local planning authority whether consent is needed for work to windows. Like-for-like sand mastic is often the preferred finish. We work on tenement windows, sash and case windows and brick reveals, and the jobs we see most are tired mastic found when preparing windows for paint and open joints round the window box.
Around Lower Green, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
You’re covered for a year from the day we finish. If anything is not right with it, call 0345 464 0079 or send us an email.
- Location
- Lower Green (RG17)
- Region
- West Berkshire
- Guarantee
- A year, on every job
- Quotes
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
DIY sealant or a professional job?
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
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.
Questions from Lower Green
I let a flat near Kintbury station. Can you help?
Yes, we work for landlords and letting agents. Just ring 0345 464 0079 or send us an email and tell us about the property, and we will give you a clear quote.
Do you cover smaller places like Lower 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.
What information do you need?
Tell us what needs doing and where. If we need more, we’ll ask.
Can you replace silicone on a period window with sand mastic?
Often, yes. With the silicone removed and the joint cleaned, sand mastic is applied by hand.
What does sand mastic cost?
We don’t publish prices, because the cost depends on the job: its size, the old material, access and the product needed. You’ll get a clear quote before any work starts.
Are you insured?
Yes. Mr Mastic is fully insured.
Can I paint the new mastic?
Traditional guidance is not to paint over sand mastic. If you are redecorating the window, ask us first and we will talk you through it.
Is it messy?
Very little: the area around the joints is protected first, and we tidy up before we go.
Windows and doors in Lower Green
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Stargroves (about 4.1 miles south-east) are a reminder that the area around Lower Green has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you live in an older home near Church of St Michael, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Letting a property close to Kintbury station? Then any sash windows need sound mastic to keep draughts and rain out.
Lower Green is about 7 miles west of Newbury, in West Berkshire. If you need sand mastic in Lower Green, it’s easy to get a quote: please phone 0345 464 0079 or drop us an email. We’re based in Crawley and cover West Berkshire. Our West Berkshire coverage runs to 155 places, and Lower Green is one of them. You can also see our page for Reading, roughly 23 miles from Lower Green.
Jobs for sand mastic in RG17 is quoted and booked the same way as anywhere else. That includes homes and businesses on Craven Road, Weavers Lane and Bitham Lane and the roads around them. Neighbouring places we cover for sand mastic include Inkpen (1 mile east), Upper Green (1 mile south-east), Inkpen Common (1 mile east), Hell Corner (2 miles east) and Kintbury (2 miles north-east). Further out, we also cover Newbury (7 miles east), Thatcham (10 miles east), Speenhamland (7 miles east), Hungerford (3 miles north-west), Lambourn (9 miles north) and Shaw (8 miles east).
Landmarks near Lower Green
In Lower Green, that means homes and buildings near John O'Gaunt School and The Old Craven Arms. The nearest railway station is Kintbury station, about 2.4 miles north-east. Other landmarks nearby include Hamstead Marshall 3 (4.2 miles east). Not far away are Kintbury Newt Ponds and Inkpen Hill.
The process
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take a few hours for a single window, longer for several. Somewhere as small as Lower Green, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check the window surrounds and agree which joints need renewing.
- We rake out the old mastic and clean the joint.
- Deep voids are packed so the mastic is the right thickness.
- The mastic is mixed, pressed into the joint by hand and shaped.
- We dress the surface so it sits neatly against the masonry.
Getting ready for the visit
- Let us know about earlier repairs to the joints
- Mention any tricky access
- Tell us about any water getting in
How to get a quote
We do not publish a price list, because every job is different. Instead, we give you a clear price for your job. To arrange one, call 0345 464 0079 or send us an email.
Advice
What affects the quote in Lower Green
The price is agreed before any work begins. It takes into account:
- The number and length of the joints
- Whether old sealant or filler has to be cut out
- How many areas need sealing
- The product the joint needs
What you pay reflects the work, not guesswork. That’s why we ask a few questions first and send you a clear quote before any work starts.
Helping us quote
You don’t need to know the technical terms. It helps if you can tell us:
- Any access issues, like height or stairs
- The type of property
- Any previous sealing or DIY work
- How many joints, rooms or windows are involved
For sand mastic in Lower Green, call 0345 464 0079 or email us. Tell us what the problem is and where, and you will get a clear quote before we start.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Avoid patching sand mastic with silicone
- Have rotten timber repaired before new mastic goes in
- Check the mastic when you check the paintwork
- Renew mastic before redecorating the windows
When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.
Gaps round a sash box let in draughts and rain. Left, the gap tends to get bigger as more mastic falls out.
Why it’s worth doing now in Lower Green
Before painting the windows, it pays to renew the mastic. Paint over cracked mastic will not stop the gaps and traditional guidance is to leave the new mastic unpainted. In a small place like Lower Green, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re unsure, call 0345 464 0079 or send us an email and we will give you an honest view and a quote.
Why us?
- ARBOMaster approved applicator
- 4.9 on Google from 180+ five-star reviews
- We’re fully insured
- Arbo and Everbuild products
Take a look at our cost guide or our reviews.
Different surfaces, different methods
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It suits older brickwork.
Stone surrounds
Old stone surrounds are often uneven, so the joint varies in width. We shape it by hand to follow the stone.
When to call us in Lower Green
Shallow joints are a common cause. Mastic that is too thin cracks and drops out so we make sure the new mastic is the right thickness.
The problems people generally mention when they call include:
- Mastic round period door frames that has failed
- Mastic dropping out of the joint
- Cement or filler used on old window joints that has cracked
- Mastic that needs renewing before redecorating
Schools such as Inkpen Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
What your quote should include
- What product goes in the joint
- How the joint is cleaned and prepared
- How hidden problems are handled
- Whether they’re fully insured