Bracknell Forest · England
Newell Green Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Newell Green. Fully insured, ARBOMaster approved and guaranteed for a year.
- Gaps round a timber door in stone or brick
- A silicone bead on a sash window that spoils the look
- Patchy fillers round a sash window
How we handle sand mastic in Newell 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. Sand mastic is often favoured as a like-for-like material. Typical jobs include old cement repairs round a window that have failed and tired mastic found when preparing windows for paint, on sash and case windows, stone surrounds and tenement windows.
Homes in small places like Newell Green often stand in the open, with little to shelter their windows from wind and rain. Exposed frames and sills lose their mastic sooner than sheltered ones.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Where
- Newell Green (RG42)
- Region
- Bracknell Forest
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What happens if it’s left?
Cement-based fillers and modern sealants don’t always suit a period surround. Sand mastic matches what was there and that can be important for listed homes. Older cottages and farmhouses around Newell Green can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please phone 0345 464 0079 or drop us an email and we will talk you through it.
What you get with us
- Domestic, commercial and hotel work
- An ARBOMaster approved applicator
- Over 20 years’ experience
- 180+ five-star Google reviews
Read what affects the cost and our reviews.
Frames and glazing around Newell Green
Newell Green is part of Bracknell, one of the post-war new towns. With many homes from the post-war decades, replacement windows and doors are common. The mastic around replacement frames ages too, and gaps at sills and frame heads are where water gets in. 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.
For an older house near a landmark such as Church of St Michael and All Angels, the joint between an old wall and a newer frame is generally the first place rain gets in. For site and facilities teams at buildings such as Sandy Lane Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Newell Green is about 2 miles north of Bracknell, in Bracknell Forest. Anywhere in RG42, our applicators can take on sand mastic. Newell Green is one of 41 towns and villages in Bracknell Forest we cover. We also work in Reading, around 10 miles away.
Work in RG42 works the same way as everywhere else we cover. If you need sand mastic at a property on Sutton Road, Abbey Place and Burge Place or a nearby road, our applicators can take on the job. Newell Green sits on or near the B3034, which makes travel easy. Neighbouring places we cover for sand mastic include Quelm Park (1 mile south-west), Lawrence Hill (1 mile south-east), Wick Hill (1 mile south), Whitegrove (1 mile south-east) and Warfield (1 mile north-east). Larger places within reach include Sandhurst (6 miles south), Great Hollands (3 miles south-west), Hanworth (3 miles south), College Town (6 miles south), Little Sandhurst (6 miles south-west) and Birch Hill (3 miles south).
What’s near Newell Green
Locally, jobs take us to homes and businesses close to Garth Hill College and Lambrook. The nearest railway station is Bracknell station, roughly 1.4 miles south of the centre. Nearby you’ll also find Heatherwood Hospital (3 miles south-east) and The Lexicon (1.1 miles south). The countryside around Newell Green includes Heath Lake and Holt Copse & Joel Park.
Can I do it myself?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
Your questions about sand mastic in Newell Green
Can you help a landlord with a rental near Bracknell station?
Yes. We work for landlords and agents as well as householders, and several properties can go on one quote. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear quote.
Is Newell Green within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can I choose the sealant colour?
Most of the time, yes. We’ll explain which colours are available and agree one before work begins.
What does sand mastic cost?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Will there be a smell?
Some sealants have a smell while they cure, which fades as it sets. Opening a window helps.
What information do you need?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Do I need permission for sand mastic on a listed building?
Check with your local planning authority. They’ll tell you if consent is needed.
What’s sand mastic made of?
Sand plus a binder based on linseed oil. It’s built up in the joint by hand and shaped to suit the surround.
How the visit works
There’s no need to move everything out before we come, only the area right around the joints. Everything nearby is protected, and the job takes a few hours per window, depending on the condition of the joints for a typical job. For a village or hamlet like Newell Green, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic isn’t too thick.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Getting ready for the visit
- Let us know about stairs, lifts or work at height
- Try not to wet indoor joints just before the visit
- Tell us if parking is tricky
Ask for a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work.
Advice
Work for landlords, hotels and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
When to call us in Newell Green
Previous repairs in cement or silicone often trap water or crack away. They do not move with the timber, and they normally need raking out.
These are the problems we are asked about most:
- Modern sealant on a period surround
- Gaps round a timber door in stone or brick
- Wind and rain getting in round a sash window
- Gaps where the frame meets the masonry
Letting a property close to Bracknell station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
Before booking anyone
- Whether they seal over old material or remove it
- How long the guarantee is
- How long to leave it before use
- Whether you can choose the colour
Nearby places to Newell Green
Also in Newell Green
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Find out about consent before window work on a listed home
- Renew mastic before redecorating the windows
- Do not run silicone over sand mastic
- Don’t paint over the new mastic
Keep paint scrapers and sanders off the mastic when redecorating. It can be damaged by heavy scraping.
Fine cracks show the mastic is starting to fail. Renewing it then is simpler than waiting until it falls out.
What the job involves on each surface
Sash and case windows
On a sash window, the mastic joint shows on the outside so we finish it carefully.
Period and listed homes
On a listed home or in a conservation area, the right material matters. Like-for-like sand mastic is normally favoured.