Oxfordshire · England
Ashampstead Sand Mastic
Sand mastic in Ashampstead from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Weathered mastic on the most exposed windows
- Draughty sash windows at the surround
- Cracked mastic round a front door frame
What we’re called out for in Ashampstead
Sand mastic slowly weathers. It dries out, cracks and loses its grip from the frame or the masonry.
Common reasons people contact us include:
- Mastic round period door frames that has failed
- Draughty sash windows at the surround
- Gaps where the frame meets the masonry
- Mastic dropping out of the joint
If you live in an older home near Church of St Clement, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
What to look for in a quote
- Whether the sealant suits the joint
- Whether you can choose the colour
- Are they insured?
- How much experience the applicator has
Sand mastic in Ashampstead
For a listed home or one in a conservation area, ask your local planning authority whether consent is needed for work to windows. Sand mastic is often favoured as a like-for-like material. We’re often asked to deal with crumbling sand mastic round a window and weathered mastic on the most exposed windows, across brick reveals, tenement windows and timber door frames.
Mastic can only go onto a dry, clean joint, so window work in Ashampstead is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
Every job comes with our one-year guarantee, wherever you are in Oxfordshire.
- Place
- Ashampstead (RG8)
- Region
- Oxfordshire
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
When it is not the sealant
Before you book, it’s worth knowing the limits:
- Whether work needs listed building consent
- Sashes that need overhauling
- Damaged stone surrounds
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think before booking.
Surfaces we seal
- Brick reveals
- Timber door frames
- Period & listed homes
- Sash and case windows
- Stone surrounds
- Tenement windows
How the job changes by surface
Brick reveals
Gaps between frame and brick let in rain and draughts. New mastic seals the gap.
Period and listed homes
Period homes look their best with traditional materials.
Questions from Ashampstead
Can you help a landlord with a rental near Goring & Streatley station?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before any work starts.
Is Ashampstead within the area you cover?
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 does sand mastic cost?
It depends on the job, so we quote each one individually. To get one, phone 0345 464 0079 or email us and tell us what needs doing and where.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and you will get one quote.
Can old silicone round a sash window be swapped for sand mastic?
Often, yes. Once the silicone is out and the joint prepared we point it with sand mastic.
Will the old sealant be removed?
Yes, always, and completely. New sealant won’t bond properly to old, so the joint is cleaned back first.
Can new sealant go over the old?
No. Fresh sealant doesn’t stick to old sealant, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
What is sand mastic?
Sand mastic is a traditional material for pointing round windows and doors. It combines sand with a linseed-oil-based binder.
Landlords, agents and businesses in Ashampstead
For anyone letting property in or around Ashampstead, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and pictures by email help.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
What sand mastic looks like in Ashampstead
Historic houses like Basildon Park (about 2.9 miles east) are a reminder that the area around Ashampstead has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. 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.
Letting a property close to Goring & Streatley station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about.
Ashampstead is about 7 miles north-east of Thatcham, in Oxfordshire. For sand mastic in and around Ashampstead, it’s easy to get a quote: please phone 0345 464 0079 or email us. We cover Oxfordshire from our Crawley base, Ashampstead included. Ashampstead is one of 443 places in Oxfordshire we cover for sand mastic. We also work in Reading, about 10 miles from Ashampstead.
Jobs for sand mastic in RG8 is quoted and booked the same way as anywhere else. Local streets include Chapel Lane, Noakes Hill and Church Lane, all of which we cover. Nearby, we also carry out sand mastic in Ashampstead Green (1 mile north), Stubbles (1 mile south-east), Burnt Hill (2 miles south), Upper Basildon (2 miles east) and New Town (3 miles east). Further out, we also cover Didcot (9 miles north), Abingdon-on-Thames (14 miles north), Wantage (12 miles north-west), Henley-on-Thames (12 miles east), Grove (13 miles north-west) and Benson (10 miles north).
What’s near Ashampstead
The closest station to Ashampstead is Goring & Streatley station, roughly 3.2 miles north-east of the centre. A little further out are Yattendon Castle (1.7 miles south-west). Green spaces nearby include Hartslock.
Quotes for sand mastic in Ashampstead
Some jobs are bigger than they look, and some smaller. What affects the quote:
- How many rooms, windows or areas are involved
- Working hours on commercial sites
- Mould in or behind the old joints
- The old material and how stubborn it is
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You will know the price before we begin.
What to tell us for a quote
What to tell us when you ask for a quote:
- The address or postcode of the job
- Roughly how big the job is
- Any access issues, like height or stairs
- If it’s domestic, commercial or a hotel
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work and give you a clear quote.
What we do, step by step
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours per window, depending on the condition of the joints. Somewhere like Ashampstead needs a little journey planning: 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.
- Each surround is checked first.
- The joint is raked out and cleaned.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Before we arrive
- Keep children and pets away from the work area
- Tell us if parking is tricky
- For indoor joints, keep the area dry beforehand if you can
Ask for a quote
Need a quote? Please ring 0345 464 0079 or drop us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
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DIY sealant or a professional job?
A DIY attempt does not rule out a professional job. We cut it out and start again, so just mention it when you contact us.
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. All the old material has to come out first.