West Berkshire · England
Chieveley Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Chieveley, backed by a one-year guarantee. Ask us for a quote.
- Old sand mastic that has cracked, crumbled or fallen out
- Modern sealant on a period surround
- Draughts and rain around sash boxes
About our sand mastic in Chieveley
Traditional burnt sand mastic blends with stone and brick surrounds. It’s a good fit for period properties where a modern sealant bead would stand out. We’re often asked to deal with patchy fillers round a sash window and gaps round a timber door in stone or brick, on sash and case windows, tenement windows and brick reveals.
Homes in small places like Chieveley 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.
All of our work is guaranteed for twelve months, in Chieveley and everywhere else we cover.
- Location
- Chieveley (RG20)
- Wider area
- West Berkshire
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What sand mastic looks like in Chieveley
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. With historic houses such as Shaw House (about 3.6 miles south) nearby, there’s older building stock in the area around Chieveley as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
Rented homes near Newbury Racecourse station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. For an older house near a landmark such as Church of St Mary, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Chieveley is about 5 miles north of Newbury, in West Berkshire. Jobs in Chieveley get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Our West Berkshire coverage runs to 155 places, and Chieveley is one of them. You can also see our page for Reading, roughly 15 miles from Chieveley.
Here we cover the RG20 postcode area for sand mastic. Streets in the area include High Street, East Lane and Sowbury Park, all of which we cover. If you are just outside Chieveley, we cover Downend (1 mile north), North Heath (1 mile west), World's End (2 miles north-east), Winterbourne (2 miles south-west) and Peasemore (2 miles north-west). Further out, we also cover Newbury (5 miles south), Thatcham (5 miles south-east), Burghfield Common (12 miles east), Speenhamland (4 miles south), Hungerford (9 miles west) and Calcot (12 miles east).
Local landmarks in Chieveley
Typical jobs here are in homes near The Wheatsheaf pub, among other places. Chieveley’s nearest station is Newbury Racecourse station, roughly 4.5 miles south of the centre. A little further out are Donnington Castle (3.2 miles south) and West Berkshire Community Hospital (4.1 miles south). Not far away are Snelsmore Common.
What we do, step by step
Most of a good job is in the preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes anything from a few hours to a full day, depending on how many windows. Somewhere like Chieveley needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- First, we look at the surrounds with you and agree what needs doing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic is not too thick.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Preparing for the visit
- Mention if the joints have been sealed before
- Plan for the work area to be out of bounds to pets and children
- Move anything stored near the joints
How to get a quote
We do not publish a price list. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or email us.
Related advice
What affects the cost of sand mastic
Every job gets its own quote. This is what makes a difference:
- How many rooms, windows or areas are involved
- The old material and how stubborn it is
- Any mould that needs treating
- Whether the work is at height
Doing several joints on one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
What we need to know
What to tell us when you ask for a quote:
- The type of property
- Any previous sealing or DIY work
- Pictures of the joints, sent by email
- The rough size of the job
For sand mastic in Chieveley, call 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
When it isn’t the sealant
It helps to know what we can’t do:
- Sashes that rattle, stick or won’t open
- Masonry that needs repairing
- Decisions on consent for listed homes
If in doubt, phone 0345 464 0079 or send us an email and we’ll say what we think before booking.
Joints and surfaces we work on
- Period & listed homes
- Sash and case windows
- Brick reveals
- Stone surrounds
- Timber door frames
- Tenement windows
Landlord and commercial work in Chieveley
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we will give you a quote.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
Why deal with it now?
If you are redecorating, renew the mastic first. Painting over failed mastic doesn’t seal it, and the new mastic is traditionally left unpainted. Older cottages and farmhouses around Chieveley can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
What it costs depends on how much there is to do, how much old material has to come out and access to the work. You will have a clear quote before any work starts.
Why Chieveley customers choose us
- A 12-month guarantee on all work
- Neat joints and a tidy finish
- More than 20 years in sealant work
- Any old sealant cut out fully, not covered over
Read how sealant jobs are priced and customer reviews.
What we are called out for in Chieveley
Decorating can disturb tired mastic. It’s often found when windows are being prepared for paint.
The problems people generally mention when they call are:
- Cement or filler used on old window joints that has cracked
- Open joints round the window box
- Draughts and rain around sash boxes
- Failed mastic on an exposed elevation
For site and facilities teams at buildings such as Chieveley Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Before you book anyone
- Whether the sealant suits the joint
- Whether all the old sealant comes out first
- Whether you can choose the colour
- What happens if they find a problem under the old sealant
Can I do it myself?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
Chieveley questions
Do you cover smaller places like Chieveley?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you do sand mastic in Chieveley?
Yes, Chieveley is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or email us with a few details of the job.
Is it worth trying it myself?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
What’s sand mastic made of?
Sand plus a binder based on linseed oil. It’s applied by hand and shaped to suit the surround.
How long will you be here?
Typically it takes a few hours for a single window, longer for several. Bigger jobs take longer, and we will tell you how long to expect.
Where are you based?
Our base is Crawley, with over 20 years’ experience. Our area covers South East England, London and Scotland.
What sealant do you use?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we’ll explain our choice.
Is sand mastic better than silicone for my windows?
For period timber windows in stone or brick, sand mastic is often the better fit. On modern frames, we’d normally use a flexible sealant, and we’ll explain why.