West Berkshire · England
Sand mastic for sash & case windows in Sandleford, West Berkshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for householders, landlords and businesses in Sandleford. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Mastic that needs renewing before redecorating
- Gaps between timber frames and stone or brick
- Mastic dropping out of the joint
Different surfaces, different methods
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It suits older brickwork.
Sash and case windows
Sash windows are where we do most sand mastic work. Each joint round the box is raked out and renewed.
How we handle sand mastic in Sandleford
Burnt sand mastic is a traditional material that sits naturally against stone and brick. It suits period and listed homes where a modern sealant bead would stand out. We work on sash and case windows, tenement windows and timber door frames, and the jobs we see most are patchy fillers round a sash window and draughts and rain around sash boxes.
Around Sandleford, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
We stand behind the work with a 12-month guarantee, so you’re not left on your own once the job is done.
- Place
- Sandleford (RG19, RG20, RG14)
- Wider area
- West Berkshire
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
DIY versus a professional finish
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
The process
There’s no need to move everything out before we come, just the space around the work. We protect the rest, and the work takes anything from a few hours to a full day, depending on how many windows in most cases. Somewhere like Sandleford needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Preparing for the visit
- Mention if the joints have been sealed before
- For indoor joints, keep the area dry beforehand if you can
- Clear the area around the work
Get a quote
Every job is quoted individually, so the first step is telling us about yours. Just call 0345 464 0079 or email us with the details and send photos if you have them.
Advice
Also near Sandleford
What else we do in Sandleford
Work for landlords, hotels and businesses
For anyone letting property in or around Sandleford, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
Landlords and agents in Sandleford can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order.
Why it’s worth doing now in Sandleford
Gaps round a sash window let in rain and draughts. Left, water can reach the timber and the wall, so dealing with it now protects both. Around Sandleford, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
Why us?
- One-year guarantee on every job
- ARBOMaster approved applicator
- Arbo and Everbuild products
- 180+ five-star Google reviews
Take a look at how sealant jobs are priced or what customers say.
Sand mastic in Sandleford: local notes
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. Historic houses like Shaw House (about 2.4 miles north) are a reminder that the area around Sandleford has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
Homes close to St Gabriel's School include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame. Managing a site like The Willows Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages. Rented homes near Newbury station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
Sandleford is about 1 mile south of Newbury, in West Berkshire. Wherever you are in the RG19 postcode area, we can carry out sand mastic at your property. Sandleford is one of 155 towns and villages in West Berkshire we cover. For nearby work, see our Reading page (15 miles or so).
All of RG19, RG20 and RG14 is within our area for sand mastic. That includes homes and businesses on Priory Place, Laurel Gardens and Sandleford Lodge Park. Other places close to Sandleford include Greenham (1 mile north-east), Newtown Common (1 mile south-west), Wash Common (1 mile west), Burghclere Common (1 mile south) and Newbury (1 mile north). Larger places within reach include Thatcham (3 miles north-east), Burghfield Common (11 miles east), Hungerford (9 miles west), Spencers Wood (15 miles east), Calcot (12 miles east) and Lambourn (13 miles north-west).
What’s near Sandleford
Around Sandleford, our work takes us to homes and buildings near Sandleford Priory, St Bartholomew's School and Park House School, among other places. The closest station to Sandleford is Newbury station, about 1.4 miles north. Other landmarks nearby include Donnington Castle (3 miles north) and Old Chapel Textile Centre (1.6 miles east). Open spaces near Sandleford include Beacon Hill and Audrey's Meadow.
What affects the quote in Sandleford
Call for a quick quote. What matters most is:
- Whether the work is at height
- Any working-time requirements on site
- Any mould that needs treating
- Which sealant suits the joint
The cost reflects the work involved, not guesswork. That is why we ask a few questions first and agree the price before starting.
What we need to know
What to tell us when you ask for a quote:
- If someone has resealed it before
- What’s wrong with the joints now
- Roughly how big the job is
- Where the property is
Need a quote? Please call 0345 464 0079 or send us an email and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
FAQs for Sandleford
Do you cover Sandleford for sand mastic?
Yes, Sandleford is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job.
Do you work for landlords with property near Newbury station?
Yes. We work for landlords and agents as well as householders, and several properties can be quoted together. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Do I need permission for sand mastic on a listed building?
Your local planning authority is the one to ask. They decide whether consent is needed for work to your windows.
What does sand mastic cost?
Size, access and the old material all affect the cost. Ask us for a quote.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.
What exactly is sand mastic?
It’s the traditional filler for the joint round timber windows and doors. It’s made with sand and a linseed-oil-based binder.
Can new sealant go over the old?
No, because it fails. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
What do you need from me for a quote?
Just the basics: where it is, what you’ve noticed and how we reach it. After that, simply ring 0345 464 0079 or send us an email.
Aftercare tips
After the cure time, these simple habits help:
- Get any rot dealt with first
- Clear gutters so water doesn’t pour onto the windows
- Go gently near the mastic when preparing windows
- Sort the mastic before the decorators arrive
Check the mastic when you check the paintwork. Catching cracks early keeps repairs small.
Renewing mastic before redecorating saves doing it twice. Painting over failed mastic hides the problem for a while.