West Berkshire · England
Sand mastic for sash & case windows in Beenham, West Berkshire
Sand mastic in Beenham from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- A silicone bead on a sash window that spoils the look
- Failed mastic on an exposed elevation
- Draughts and rain around sash boxes
About our sand mastic in Beenham
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s a mix of sand and a linseed-oil-based binder, applied by hand. On older homes, it suits the building far better than silicone. We work on period & listed homes, stone surrounds and tenement windows, and common reasons people get in touch are modern sealant on a period surround and draughty sash windows at the surround.
Mastic can only go onto a dry, clean joint, so window work in Beenham is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
Every job comes with our 12-month guarantee.
- Place
- Beenham (RG7)
- Wider area
- West Berkshire
- Guarantee
- 12 months on all our work
- Price
- A clear price before work begins
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
How it works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. Typically it takes anything from a few hours to a full day, depending on how many windows and we leave things clean and tidy. Somewhere as small as Beenham, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, we look at the surrounds with you and agree what needs doing.
- Old, loose mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Preparing for the visit
- Mention any sign-in or site rules at work premises
- Let us know about stairs, lifts or work at height
- Clear items away from the joints we are working on
Get a quote
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or drop us an email.
Related advice
FAQs for Beenham
Can you help a landlord with a rental near Aldermaston station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before any work starts.
Is Beenham within the area you cover?
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.
Are you fully insured?
Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.
Should I check with the council before work on a listed or conservation-area home?
Check with your local planning authority. They’ll tell you if consent is needed for work to your windows.
Can you replace silicone on a period window with sand mastic?
In most cases. We remove the silicone and clean the joint, then point it with sand mastic.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
Where are you based?
We work from Crawley. Our applicators cover Beenham.
Can you do several jobs on one visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
Nearby places to Beenham
Other services in Beenham
What the job involves on each surface
Stone surrounds
Old stone surrounds are often uneven, so the gap isn’t the same all the way round. We shape it by hand to follow the stone.
Period and listed homes
Period homes look their best with traditional materials, and sand mastic is one of them.
Should I try it myself first?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
When something else is needed
A few problems are outside what sealant work can do:
- Putty and glazing repairs
- Sashes that need overhauling
- Whether work needs listed building consent
Not sure which it is? You can ring 0345 464 0079 or send us an email and we will tell you honestly.
Surfaces we seal
- Tenement windows
- Brick reveals
- Timber door frames
- Sash and case windows
- Period & listed homes
- Stone surrounds
Why deal with it now?
Before painting the windows, it pays to renew the mastic. Paint over cracked mastic won’t stop the gaps, and the new mastic is traditionally left unpainted. In a small place like Beenham, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all play a part.
Why book with us
- Sanitary silicone with an anti-fungal additive in wet areas
- 4.9 on Google from 180+ five-star reviews
- 20+ years of sealant experience
- Homes, businesses and hotels
Take a look at our cost guide or our reviews.
How to look after the new joints
To keep the joints looking good and working properly:
- Take care around the mastic when scraping paint
- Look over the window mastic once a year
- Check with your local planning authority if your home is listed
- Keep modern sealant off the mastic
Leave the new mastic alone while it firms up. It skins over quickly, but takes longer to harden fully.
Fine cracks show the mastic is starting to fail. It’s easier to renew it before it drops out.
Windows and doors in Beenham
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.
Letting a property close to Aldermaston station? Then older sash windows in a rental need their mastic kept sound to keep the weather out. In the older streets around Church of St Mary, frames set in older brick or stone need a sealant that suits the wall as well as the frame. If you look after a building such as Beenham Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Beenham is about 4 miles north of Tadley, in West Berkshire. If you need sand mastic in Beenham, please ring 0345 464 0079 or drop us an email for a quick quote. We cover West Berkshire from our Crawley base, Beenham included. 155 places in West Berkshire are on our list, large and small. Our Reading page covers work nearby.
All of RG7 is within our area for sand mastic, from the main roads to the quietest streets. Whether your property is on Stoneyfield, Back Lane and Church View or a nearby road, our applicators can take on the job. We also cover the places around Beenham: Beenham Stocks (1 mile north-east), Upper Woolhampton (1 mile south-west), Southend (1 mile north), Lower Padworth (1 mile south-east) and Chapel Row (1 mile west). We also work in nearby towns such as Newbury (8 miles west), Thatcham (5 miles west), Burghfield Common (4 miles east), Speenhamland (8 miles west), Spencers Wood (8 miles east) and Calcot (5 miles east).
Around Beenham
We work in homes and buildings around The Six Bells pub and the streets around them. The closest station to Beenham is Aldermaston station, roughly 1.1 miles south-east of the centre. Nearby you’ll also find Yattendon Castle (4.3 miles north-west) and Thames Valley Police Museum (3.1 miles east). Open spaces near Beenham include Hosehill Lake and Moor Copse Nature Reserve.
Work for landlords, hotels and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
We work for letting agents and landlords as well as householders. Resealing between tenancies is a simple way to keep a property in good order.