Bracknell Forest · England
Lawrence Hill Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Lawrence Hill and across Bracknell Forest. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Tired mastic found when preparing windows for paint
- Wind and rain getting in round a sash window
- Cracked mastic round a front door frame
About our sand mastic in Lawrence Hill
For a listed home or one in a conservation area, ask your local planning authority if consent is needed before window work. Like-for-like sand mastic is often the preferred finish. We’re often asked to deal with mastic worn away on windows facing the weather and mastic that needs renewing before redecorating, on period & listed homes, sash and case windows and tenement windows.
In a smaller place like Lawrence Hill, some walls face open ground and catch the full force of the weather. The mastic around frames on those walls tends to age faster.
Whatever the size of the job, it’s backed by our one-year guarantee in Lawrence Hill and across Bracknell Forest.
- Where
- Lawrence Hill (RG42, RG12)
- Region
- Bracknell Forest
- Guarantee
- A year, on every job
- Quote
- A clear price before we start
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What sealant work cannot fix
Sealant isn’t the answer to every problem, and we will tell you before work begins. Sealant will not put right:
- Whether work needs listed building consent
- Sashes that need overhauling
- Masonry that needs repairing
Not sure which it is? You can call 0345 464 0079 or drop us an email and we will tell you honestly.
Surfaces we seal
- Period & listed homes
- Tenement windows
- Sash and case windows
- Brick reveals
- Timber door frames
- Stone surrounds
Lawrence Hill questions
Do you work for landlords with property near Bracknell station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we will give you a clear price.
Should the sealant in an older Lawrence Hill home be renewed?
Often, yes: cracked, shrunken or mouldy sealant has done its job. The key is cutting all the old sealant out, as new sealant won’t bond to it.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises. We can talk about working times when we quote.
Is it possible to paint over sand mastic?
Sand mastic is normally left unpainted, which is what traditional guidance recommends. Ask us before decorating.
Is it possible to take out silicone and use sand mastic instead?
Often, yes. Once the silicone is out and the joint prepared we point it with sand mastic.
How much does sand mastic cost in Lawrence Hill?
It depends on the job, so we quote each one individually. For a quick quote, phone 0345 464 0079 or send us an email and tell us what needs doing and where.
Where are you based?
We’re a Crawley-based firm. We work across South East England, London and Scotland.
Do you come to Lawrence Hill?
Yes. We cover Lawrence Hill. For a quote, phone 0345 464 0079 or send us an email.
What the job involves on each surface
Sash and case windows
The mastic round a sash window is on show so we finish it carefully.
Brick reveals
Loose mastic comes out and deep gaps are packed before pointing.
Why it’s worth doing now in Lawrence Hill
Gaps round a sash window let in rain and draughts. Water can get to the frame and the masonry, so dealing with it now protects both. Homes in smaller places like Lawrence Hill can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we’ll explain the quote if you ask.
Why book with us
- Homes, businesses and hotels
- Neat joints and a tidy finish
- 20+ years of sealant experience
- A 12-month guarantee on all work
Read what affects the cost or what customers say.
The process
There’s no need to move everything out, only the area right around the joints. Everything nearby is protected, and the work takes a few hours per window, depending on the condition of the joints in most cases. Parking around Lawrence Hill is normally easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- First, we look at the surrounds with you and agree what needs doing.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Clear items away from the joints we’re working on
- Mention any tricky access
Ask for a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. When it suits you, ring 0345 464 0079 or send us an email.
Related advice
How to look after the new joints
Looking after new joints is easy, and it makes a real difference:
- Take care around the mastic when scraping paint
- Make sure water runs off the sill
- Find out about consent before window work on a listed home
- Plan mastic work ahead of painting
Avoid painting over the new mastic, as traditional guidance advises. Ask us before any decorating around it.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber and timber that stays wet can rot.
Also near Lawrence Hill
More services for Lawrence Hill
Work for landlords, hotels and businesses
Landlords and agents in Lawrence Hill can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.
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.
Sand mastic in Lawrence Hill: local notes
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Lawrence Hill is part of Bracknell, one of the post-war new towns. Many homes date from the post-war decades, and many will have had their original windows replaced. The mastic around replacement frames ages too, and gaps at sills and frame heads are where water gets in.
Homes close to Holy Trinity Church include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. For site and facilities teams at buildings such as Warfield Church of England Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Lawrence Hill is about 1 mile north of Bracknell, in Bracknell Forest. If you need sand mastic in Lawrence Hill, please phone 0345 464 0079 or drop us an email for a quick quote. We are based in Crawley and cover Bracknell Forest. Lawrence Hill is one of 41 towns and villages in Bracknell Forest we cover. For nearby work, see our Reading page, about 10 miles away.
We work across the RG42 and RG12 postcode area for sand mastic and the streets around it. Whether your property is on Atte Lane, Quelm Lane and Sandy Lane or a nearby road, we can help. Neighbouring places we cover for sand mastic include Newell Green (1 mile north-west), Quelm Park (1 mile west), Wick Hill (1 mile south), Whitegrove (1 mile south-east) and Warfield (1 mile north). Larger places within reach include Sandhurst (6 miles south), Hanworth (3 miles south), College Town (6 miles south), Little Sandhurst (6 miles south-west), Birch Hill (3 miles south) and Owlsmoor (5 miles south). Lawrence Hill is among the bigger towns we cover in Bracknell Forest.
What’s near Lawrence Hill
We work in homes and buildings around Old Manor House Hotel, Garth Hill College and Lambrook and the streets around them. The nearest railway station is Bracknell station, about 1.2 miles south-west of the centre. Other landmarks nearby include The Lexicon (0.9 miles south-west) and Heatherwood Hospital (2.7 miles south-east). Open spaces near Lawrence Hill include Holt Copse & Joel Park and Heath Lake.
Common problems we fix in Lawrence Hill
Shallow joints are a common cause. A thin layer doesn’t hold well, which is why we pack deep voids first and get the depth right.
The most common problems we see are:
- Patchy fillers round a sash window
- Tired mastic found when preparing windows for paint
- Mastic round period door frames that has failed
- Wind and rain getting in round a sash window
If you let a flat or house near Bracknell station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
What your quote should include
- What preparation is included
- Whether they seal over old material or remove it
- Which colour the sealant will be
- Whether they’re fully insured