West Berkshire · England
Sand mastic for sash & case windows in Yattendon, West Berkshire
Specialist sand mastic for Yattendon: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Patchy fillers round a sash window
- Tired mastic found when preparing windows for paint
- Wind and rain getting in round a sash window
What we do, step by step
We work through the job in order: protect, prepare, seal, tidy. For most jobs that takes anything from a few hours to a full day, depending on how many windows. In a small place like Yattendon, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We look at the surrounds with you and agree the joints to renew.
- 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.
- We dress the finish so it sits neatly against the masonry.
Getting ready for the visit
- Mention if the joints have been sealed before
- Mention any parking rules near the property
- Keep children and pets away from the work area
How to get a quote
For a quote, call 0345 464 0079 or email us with the location and a short description of the problem. We will send you a clear quote before any work starts.
Advice
Sand mastic in Yattendon, done properly
Sand mastic skins over fairly quickly, but it takes longer to harden fully. Traditional guidance is not to paint over it and we’ll advise if you’re redecorating. If you have window mastic to renew ahead of painting and silicone on a period window that looks wrong, we can help.
In a village or hamlet like Yattendon, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we will put it right.
- Where
- Yattendon (RG18)
- Region
- West Berkshire
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Should I try it myself first?
If you’ve already had a go yourself, that is fine. We cut it out and start again.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
What we’re called out for in Yattendon
Timber swells and shrinks with the weather. That movement opens up the mastic joint little by little.
Common reasons people contact us are:
- Cement or filler used on old window joints that has cracked
- Mastic that needs renewing before redecorating
- Gaps between timber frames and stone or brick
- Draughty sash windows at the surround
In the older streets around Church of St Peter and St Paul, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
What to look for in a quote
- How the joint is cleaned and prepared
- Is the old sealant removed completely?
- How hidden problems are handled
- Whether you can choose the colour
What affects the quote in Yattendon
We do not publish a price list. The quote depends on:
- How many areas need sealing
- Working hours on commercial sites
- Any mould that needs treating
- How easy the joints are to reach
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we’ll talk you through it.
What we need to know
Photos help, but a description is a good start. Please mention:
- Access, such as stairs, a lift or height
- Pictures of the joints, sent by email
- Whether it has been sealed before
- What the problem is, such as mould, gaps, leaks or cracking
Getting a quote is simple: let us know the job and the location. Photos by email help us understand the job, and we will take it from there.
Frames and glazing around Yattendon
With historic houses such as Basildon Park (about 4.2 miles north-east) nearby, there’s older building stock in the area around Yattendon as well as newer homes. 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, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you let a flat or house near Goring & Streatley station, older sash windows in a rental need their mastic kept sound to keep the weather out. Schools such as Yattendon C.E. Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Yattendon is about 5 miles north-east of Thatcham, in West Berkshire. Our applicators cover sand mastic for homeowners, landlords and businesses in Yattendon and the surrounding area. 155 places in West Berkshire are on our list, from the larger towns to small villages. We also work in Reading, around 10 miles away.
We work across the RG18 postcode area for sand mastic. Sand mastic is available to properties on Yattendon Lane, Bryants Lane and Chapel Lane and the roads around them. Nearby, we also carry out sand mastic in Frilsham (1 mile south-west), Hampstead Norreys (2 miles north-west), Wellhouse (2 miles south-west), Little Hungerford (3 miles west) and Oare (3 miles west). Larger places within reach include Newbury (7 miles south-west), Thatcham (5 miles south-west), Burghfield Common (8 miles south-east), Speenhamland (7 miles south-west), Hungerford (14 miles west) and Spencers Wood (11 miles south-east).
What’s near Yattendon
Typical jobs here are in homes near The Royal Oak pub. Yattendon’s nearest station is Goring & Streatley station, roughly 4.9 miles north-east of the centre. Well-known places in the area include Yattendon Castle (under half a mile north-west) and West Berkshire Community Hospital (5.7 miles south-west).
Towns and villages near Yattendon
Also in Yattendon
What the job involves on each surface
Stone surrounds
Sand mastic sits naturally against stone. The finish blends with the masonry.
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. Sand mastic seals the joint round it.
How to look after the new joints
Simple care keeps the joints in good condition. We recommend:
- Plan mastic work ahead of painting
- Go gently near the mastic when preparing windows
- Do not run silicone over sand mastic
- Find out about consent before window work on a listed home
Keep paint scrapers and sanders off the mastic when redecorating. Hard scraping can loosen it.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber, which can lead to rot.
FAQs for Yattendon
Do you work for landlords with property near Goring & Streatley station?
Yes, landlords and agents are among the people we work for. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we will send you a clear quote.
Do you cover Yattendon for sand mastic?
Yes, Yattendon is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or drop us an email and let us know what needs doing.
How much does sand mastic cost in Yattendon?
Every job is different, so each one gets its own quote. For a quick quote, phone 0345 464 0079 or drop us an email with a short description of the job.
Will the old sealant be removed?
Yes, every time. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
Are you fully insured?
Yes. We’re fully insured.
Can old silicone round a sash window be swapped for sand mastic?
Normally, yes. With the silicone removed and the joint cleaned, sand mastic is applied by hand.
Where do you work from?
We work from Crawley. We cover Yattendon and the rest of West Berkshire.
How long does sand mastic take?
That depends on the amount of work, but as a guide it takes a few hours for a single window, longer for several. We will tell you when we quote.
What sealant work can’t fix
New sealant can’t fix everything, and we’d rather say so up front. It won’t solve:
- Whether work needs listed building consent
- Crumbling stone or brickwork round the window
- Decayed frames that need repair
If you’re not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer before you book.
Where we work in Yattendon
- Timber door frames
- Tenement windows
- Brick reveals
- Sash and case windows
- Stone surrounds
- Period & listed homes