West Berkshire · England
Sand Mastic in Grazeley
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Grazeley, backed by a 12-month guarantee. Ask us for a quote.
- Old sand mastic that has cracked, crumbled or fallen out
- Wind and rain getting in round a sash window
- Cracked mastic round a front door frame
Grazeley questions
Can you help a landlord with a rental near Reading Green Park station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear price.
Can you do sand mastic in Grazeley?
Yes, Grazeley is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or email us and let us know what needs doing, and we will give you a clear quote.
Do you work for hotels and businesses?
Yes, regularly. We can plan bigger jobs in stages.
Can you seal over the old sealant?
No. The old sealant always comes out first, so the new joint bonds to clean surfaces.
Do the sealants smell?
That depends on the sealant. Some products have a noticeable smell, others very little, and any smell fades as they cure.
What exactly is sand mastic?
Sand plus a binder based on linseed oil. It’s applied by hand and finished to sit neatly against the masonry.
Are you ARBOMaster approved?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Should I use sand mastic or silicone?
It depends on the window. On many period windows, sand mastic looks right and suits the building, while modern frames normally get a flexible sealant.
Sand mastic in Grazeley
Old sand mastic cracks, crumbles and falls out over time, leaving gaps round the window. We rake it out and renew it and tidies the surround. If you have old sand mastic that has cracked, crumbled or fallen out and wind and rain getting in round a sash window, we can put it right.
Somewhere as small as Grazeley, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, so the sealant has to be chosen to suit the building.
You get a one-year guarantee, the same in Grazeley as everywhere else we work.
- Location
- Grazeley (RG7)
- Region
- West Berkshire
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Looking after it afterwards
Aftercare is simple:
- Take care around the mastic when scraping paint
- Have rotten timber repaired before new mastic goes in
- Check the mastic when you check the paintwork
- Sort the mastic before the decorators arrive
Do not touch or press the mastic while it hardens. It skins over quickly but needs longer to fully harden.
Once mastic starts to crumble, rain gets in. That water can reach the timber frame and the wall, so renewing it early is worth it.
What affects the cost of sand mastic
The price is agreed before any work begins. It’s based on:
- Working hours on commercial sites
- Whether the work is at height
- The number and length of the joints
- Any mould that needs treating
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs, along with when we can work on site. Ask us for a quote and we’ll explain what it covers.
What we need to know
What to tell us when you ask for a quote:
- Whether it has been sealed before
- How we’d reach the joints
- The address or postcode of the job
- Pictures of the joints, sent by email
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
What else we do in Grazeley
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Why deal with it now?
New sash windows are a major, costly change and on a listed home, consent may be needed. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. In a small place like Grazeley, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Leaving a failed joint generally makes the job bigger, not smaller. If you are unsure, call 0345 464 0079 or send us an email and we will give you an honest view and a quote.
What you get with us
- A 12-month guarantee on all work
- More than 20 years in sealant work
- Homes, businesses and hotels
- ARBOMaster approved applicator
Read what affects the cost and our reviews.
The process
Most of a good job is in the preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours per window, depending on the condition of the joints. In a small place like Grazeley, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic isn’t too thick.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Before we arrive
- Let us know if you’ve seen damp or leaks
- On commercial sites, let us know about site rules
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we’ll explain what’s involved before giving you a price.
Advice
Windows and doors in Grazeley
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. With historic houses such as Stratfield Saye House (about 3.3 miles south) nearby, there’s older building stock in the area around Grazeley as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
Rented homes near Reading Green Park station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. Managing a site like Grazeley Parochial Church of England Aided Primary School? Then its window and door frames need their mastic kept sound, just like a home’s. Homes close to Holy Trinity Church include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Grazeley is about 4 miles south of Reading, in West Berkshire. From the centre of Grazeley to the outskirts, sand mastic is available for homes and businesses alike. We cover 155 towns and villages across West Berkshire, from the larger towns to small villages.
We cover every part of the RG7 postcode area for sand mastic. Local streets include Mereoak Lane, Church Lane and Mortimer Road. We also cover Spencers Wood (1 mile east), Beech Hill (2 miles south), Swallowfield (2 miles south-east), Riseley (3 miles south-east) and Heckfield Heath (4 miles south-east). Within a short drive, we also cover Newbury (14 miles west), Thatcham (11 miles west), Burghfield Common (3 miles west), Speenhamland (14 miles west), Calcot (4 miles north-west) and Shaw (14 miles west).
Near you in Grazeley
We work in homes and buildings around Ryeish Green School, The Farriers Arms and Oakbank. The nearest railway station is Reading Green Park station, about 2.1 miles north. Other landmarks nearby include Thames Valley Police Museum (3.9 miles north-west) and Beaumys Castle (1.5 miles south-east). The countryside around Grazeley includes Fobney Island Wetland Reserve and Longwater.
What the job involves on each surface
Period and listed homes
Materials matter on listed and conservation-area homes. Sand mastic is often the preferred finish.
Tenement and terrace windows
Where a building is shared, window work may involve neighbours so it’s worth checking responsibilities.
When it is not the sealant
We’ll always be straight with you, so here’s what new sealant won’t do:
- Cracked or broken glass
- Planning or listed building consent (your local planning authority decides)
- Masonry that needs repairing
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think before booking.
What we seal
- Stone surrounds
- Brick reveals
- Period & listed homes
- Sash and case windows
- Tenement windows
- Timber door frames