West Berkshire · England
Sand mastic for sash & case windows in Three Ashes, West Berkshire
We cover Three Ashes for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.
- Wind and rain getting in round a sash window
- Mastic dropping out of the joint
- Mastic worn away on windows facing the weather
Windows and doors in Three Ashes
Historic houses like The Vyne (about 2.8 miles south) are a reminder that the area around Three Ashes has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you let a flat or house near Bramley (Hants) station, cracked sand mastic around sash windows lets in the draughts tenants complain about. If you look after a building such as Silchester Church of England Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Three Ashes is about 3 miles east of Tadley, in West Berkshire. For sand mastic in and around Three Ashes, please phone 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover West Berkshire. Three Ashes is one of 155 towns and villages in West Berkshire where we work for sand mastic. You can also see our page for Reading, about 8 miles away.
All of RG7 is covered for sand mastic. We also cover Bramley (1 mile south-east), Mortimer West End (2 miles north), West End Green (2 miles east), Mortimer (2 miles north) and Bramley Green (2 miles south-east). Within a short drive, we also cover Newbury (11 miles west), Thatcham (8 miles north-west), Burghfield Common (4 miles north), Speenhamland (11 miles west), Spencers Wood (6 miles north-east) and Calcot (7 miles north).
Landmarks near Three Ashes
For rail, the closest station is Bramley (Hants) station, roughly 1.5 miles south-east of the centre. Other landmarks nearby include Calleva Museum (0.9 miles north-west) and Basingstoke and North Hampshire Hospital (4.8 miles south). Not far away are Daneshill Park Woods.
About our sand mastic in Three Ashes
Our applicators renew the sand mastic around sash and case windows and doors in stone and brick. Out comes the old, loose mastic, and new mastic is applied and shaped by hand. Common call-outs are for open joints round the window box and cracked mastic round a front door frame, on brick reveals, sash and case windows and stone surrounds.
Outdoor sealant needs dry, clean surfaces, so work on frames around Three Ashes is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Place
- Three Ashes (RG7)
- Region
- West Berkshire
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What we do, step by step
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 and we leave things clean and tidy. In a small place like Three Ashes, access is usually the main thing to plan. 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.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- We dress the surface so it sits neatly against the masonry.
How to prepare
- Mention any leaks or damp you’ve noticed
- Mention any parking rules near the property
- Keep children and pets away from the work area
Ask for a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and add pictures by email if you can.
Related advice
Do you need sand mastic in Three Ashes?
Timber frames move with the seasons. That movement opens up the mastic joint little by little.
Keep an eye out for any of the following:
- Mastic round period door frames that has failed
- Mastic dropping out of the joint
- Weathered mastic on the most exposed windows
- Gaps where the frame meets the masonry
In the older streets around Church of St. Mary, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What your quote should include
- Is the old sealant removed completely?
- Which colour the sealant will be
- Are they insured?
- What product goes in the joint
Work for landlords, hotels and businesses
Hotels need rooms back in use, so the work can be planned room by room. We have worked in hotels as well as homes and businesses.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can go on one quote.
Why deal with it now?
New sash windows are a major, costly change and on a listed home, consent may be needed. Where the frames are in good order, new mastic seals the surround. In a small place like Three Ashes, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re not sure whether it needs doing, ring 0345 464 0079 or email us for an honest opinion and a quote.
Why Three Ashes clients choose us
- Trusted Arbo and Everbuild sealants
- Anti-fungal silicone where joints get wet
- Full insurance on every job
- Rated 4.9 stars on Google
Take a look at what affects the cost and customer reviews.
Three Ashes questions
Can you do sand mastic in Three Ashes?
Yes, Three Ashes is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or drop us an email and tell us what needs doing.
Is Three Ashes within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is the work guaranteed?
Every job comes with our one-year guarantee, and we are fully insured.
Do I have to be there?
That depends on where the joints are. Inside work needs someone to give us access, and for outside work we’ll agree access with you when we book.
Do you take out the old sealant first?
Yes, always, and completely. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.
Can new sealant go over the old?
No. We remove every bit of old sealant first.
Do the sealants smell?
Sometimes, a little. It fades as the sealant cures.
Can landlords and businesses book you?
Yes, regularly. We can quote for several properties at once, and between tenancies is a good time for the work.
Keeping the joints in good condition
A little care helps the new joints last. Our advice:
- Ask a joiner to look at soft timber first
- Avoid patching sand mastic with silicone
- Do not paint over the new mastic
- Make sure water runs off the sill
Check the mastic when you check the paintwork. Catching cracks early keeps repairs small.
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.
When it is not the sealant
We’d rather tell you now than do work that will not last, so these are the limits:
- Damaged stone surrounds
- Decisions on consent for listed homes
- Timber that has rotted
If in doubt, phone 0345 464 0079 or email us and we’ll say what we think before booking.
Joints and surfaces we work on
- Tenement windows
- Period & listed homes
- Brick reveals
- Sash and case windows
- Timber door frames
- Stone surrounds
Nearby places to Three Ashes
More services for Three Ashes
Surface by surface
Sash and case windows
Most of our sand mastic work is on sash windows. We renew the mastic round each box.
Period and listed homes
On a listed home or in a conservation area, the right material matters. Sand mastic is often the preferred finish.