West Berkshire · England
Sand mastic for sash & case windows in Mill Green, West Berkshire
Professional sand mastic in and around Mill Green, with every bit of old sealant taken out first and a 12-month guarantee.
- Modern sealant on a period surround
- Failed mastic on an exposed elevation
- Draughts and rain around sash boxes
How it works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours per window, depending on the condition of the joints. Somewhere as small as Mill Green, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by checking each surround and agreeing the joints to renew.
- The loose and crumbling mastic is raked out and the joint cleaned.
- 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
- Mention any parking rules near the property
- Move anything stored near the joints
- Tell us about any water getting in
Ask for a quote
Asking for a quote is easy: tell us what needs doing and where, and roughly how big it is. A few pictures by email make the job easier to understand, and we will come back to you with a quote.
Read more
How we handle sand mastic in Mill Green
For a listed home or one in a conservation area, ask your local planning authority whether consent is needed for work to windows. Like-for-like sand mastic is often the preferred finish. If you have wind and rain getting in round a sash window and old cement repairs round a window that have failed, we can put it right, whatever the surface.
Outdoor sealant needs dry, clean surfaces, so work on frames around Mill Green is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
A one-year guarantee comes as standard.
- Location
- Mill Green (RG19)
- Region
- West Berkshire
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Surface by surface
Stone surrounds
Stone surrounds suit sand mastic well. It finishes to look like part of the surround.
Timber door frames
Round a period front door, sand mastic gives the right look.
Can I do it myself?
Some sealant jobs are within reach of a careful DIYer, 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.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
What affects the quote in Mill Green
There’s no set price list, because jobs vary so much. The quote depends on:
- Working hours on commercial sites
- Mould in or behind the old joints
- The type of sealant required
- How many rooms, windows or areas are involved
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or email us.
Helping us quote
You do not need to know the technical terms. Just tell us:
- The rough size of the job
- Whether it has been sealed before
- What the problem is, such as mould, gaps, leaks or cracking
- The address or postcode of the job
For sand mastic in Mill Green, phone 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before we start.
When it isn’t the sealant
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Crumbling stone or brickwork round the window
- Planning or listed building consent (your local planning authority decides)
- Cracked or broken glass
If you’re not sure, just call 0345 464 0079 or drop us an email and we will give you a straight answer.
Where we work in Mill Green
- Period & listed homes
- Tenement windows
- Stone surrounds
- Timber door frames
- Brick reveals
- Sash and case windows
Also near Mill Green
What else we do in Mill Green
Mill Green questions
Do you cover smaller places like Mill Green?
Yes, Mill Green is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
I let a flat near Thatcham station. Can you help?
Yes, we work for landlords and agents. You can ring 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before work begins.
Will it make a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Do I have to be there?
We need access to the joints, so we will agree that with you when we book. For inside work, that normally means someone being in.
Where are you based?
We are a Crawley-based firm. We work across South East England, London and Scotland.
What do you need from me for a quote?
Let us know what needs doing and where. If we need more, we’ll ask.
What exactly is sand mastic?
A traditional pointing material made from sand and a linseed-oil-based binder, used between timber frames and stone or brick.
How long does sand mastic take?
Most jobs take a few hours per window, depending on the condition of the joints, including the preparation. We will confirm how long when we quote.
Landlords, agents and businesses in Mill Green
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can go on one quote.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
What sand mastic looks like in Mill Green
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Shaw House (about 4.6 miles north-west) nearby, there’s older building stock in the area around Mill Green as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
For landlords with property near Thatcham station, any sash windows need sound mastic to keep draughts and rain out. Managing a site like Cheam School? Then the mastic around its windows and doors needs looking after like any other building’s. If you live in an older home near Church of St Peter, the joint between an old wall and a newer frame is generally the first place rain gets in.
Mill Green is about 3 miles south of Thatcham, in West Berkshire. Whether you are in the middle of Mill Green or further out, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. Our area takes in 155 places across West Berkshire. Reading is on our list too, about 13 miles from Mill Green.
We cover every part of RG19 for sand mastic and the streets around it. Other places close to Mill Green include Headley (1 mile west), Goose Hill (1 mile east), Plastow Green (1 mile south), Crookham (1 mile north-east) and Heads Hill (1 mile north-west). We also work in nearby towns such as Newbury (4 miles north-west), Thatcham (3 miles north), Burghfield Common (8 miles east), Speenhamland (5 miles north-west), Hungerford (12 miles west) and Spencers Wood (12 miles east).
Around Mill Green
In Mill Green, that means homes and buildings near New Greenham Park and The Travellers Friend pub. The closest station to Mill Green is Thatcham station, roughly 2 miles north. Well-known places in the area include West Berkshire Community Hospital (3.6 miles north-west) and Old Chapel Textile Centre (1.7 miles west). For a walk, there’s Ladle Hill and Thatcham Reed Beds.
How to look after the new joints
To keep the joints looking good and working properly:
- Sort the mastic before the decorators arrive
- Avoid heavy scraping on the mastic joint
- Avoid patching sand mastic with silicone
- Have rotten timber repaired before new mastic goes in
Avoid painting over the new mastic, which is the traditional advice. Ask us before any decorating around it.
It’s best to renew mastic before painting the windows. Paint over cracked mastic only covers it up.