Reading · England
Sand mastic for sash & case windows in Kidmore End, Reading
Sand mastic in Kidmore End from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Silicone on a period window that looks wrong
- Old cement repairs round a window that have failed
- Gaps between timber frames and stone or brick
What sealant work can’t fix
Sealant isn’t the answer to every problem, and we will tell you before we start. Sealant won’t put right:
- Whether work needs listed building consent
- Broken panes
- Timber that has rotted
If you are not sure, just phone 0345 464 0079 or email us and we will give you a straight answer.
Where we work in Kidmore End
- Brick reveals
- Tenement windows
- Period & listed homes
- Timber door frames
- Sash and case windows
- Stone surrounds
Sand mastic in Kidmore End
Sand mastic skins over fairly quickly, but it takes longer to harden fully. Traditional guidance is not to paint over it and we will advise if you’re redecorating. If you have draughts and rain around sash boxes and gaps round a timber door in stone or brick, we can put it right.
Mastic can only go onto a dry, clean joint, so window work in Kidmore End is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
Big or small, it’s backed by our 12-month guarantee in Kidmore End and across Reading.
- Place
- Kidmore End (RG4)
- Region
- Reading
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Different surfaces, different methods
Tenement and terrace windows
Upper-floor windows need access planning. Let us know the floor and we’ll confirm access.
Brick reveals
We rake out the old mastic and pack deep voids before pointing.
The process
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours for a single window, longer for several, and the area is left clean. Somewhere like Kidmore End needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided 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.
- 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 finish is dressed so it sits neatly against the stone or brick.
Before we arrive
- Tell us about any water getting in
- Keep children and pets away from the work area
- Mention any tricky access
Get a quote
For sand mastic in Kidmore End, call 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you will get a clear quote before work begins.
Advice
Aftercare tips
A little care helps the new joints last. We recommend:
- Do not run silicone over sand mastic
- Find out about consent before window work on a listed home
- Look over the window mastic once a year
- Do not paint over the new mastic
Don’t touch or press the mastic while it hardens. It forms a skin fairly soon but needs longer to fully harden.
Fine cracks show the mastic is starting to fail. Renewing it then is simpler than waiting until it falls out.
Towns and villages near Kidmore End
Also in Kidmore End
DIY versus a professional finish
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Quotes for sand mastic in Kidmore End
The quote reflects the job in front of us. We look at:
- How much old sealant there is and how hard it is to remove
- How many areas need sealing
- The product the joint needs
- Access and height
The cost depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before any work starts.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- Photos by email, if that is easy
- What the problem is, such as mould, gaps, leaks or cracking
- How many joints, rooms or windows are involved
- The type of property
It all starts with a short chat. Describe the problem, the location and the size of the job. Whenever you are ready, phone 0345 464 0079 or send us an email.
Work for landlords, hotels 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.
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Your questions about sand mastic in Kidmore End
I let a flat near Tilehurst station. Can you help?
Yes, we work for letting agents and landlords. You can ring 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before any work starts.
Will you come out to Kidmore End?
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.
Do you do commercial work?
Yes. Larger jobs can be planned room by room or area by area.
Can old silicone round a sash window be swapped for sand mastic?
Yes, it’s a common request. The old silicone has to come out completely so the mastic can sit properly.
Are you insured?
Yes. Full insurance covers our work.
Does someone need to be in?
We need access to the joints, so we’ll agree that with you when we book. For inside work, that normally means someone being in.
What sealant do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We explain the product when we quote.
What information do you need?
Just the basics: where it is, what you’ve noticed and how we reach it. After that, simply phone 0345 464 0079 or send us an email.
Kidmore End homes and the weather
Historic houses like Mapledurham House (about 2.3 miles south-west) are a reminder that the area around Kidmore End has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Homes close to Church of St John the Baptist include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in. For landlords with property near Tilehurst station, any sash windows need sound mastic to keep draughts and rain out. If you look after a building such as Kidmore End Church of England Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Kidmore End is about 2 miles north-west of Caversham, in Reading. We carry out sand mastic for homeowners, landlords and businesses in Kidmore End and nearby, as part of our work across Reading. 34 places in Reading are on our list, large and small.
Here we cover the RG4 postcode area for sand mastic. Local streets include Butlers Orchard, Coopers Pightle and Wood Lane, all of which we cover. Nearby, we also carry out sand mastic in Sonning Common (1 mile north-east), Peppard Hill (1 mile north), Kingwood Common (2 miles north), Rotherfield Peppard (2 miles north-east) and Shepherd's Green (3 miles north-east). Larger places within reach include Norcot (4 miles south), West Reading (4 miles south), Tilehurst Within (4 miles south-west), Shinfield (7 miles south), Arborfield Garrison (10 miles south-east) and Horncastle (4 miles south).
Around Kidmore End
In Kidmore End, that means homes and buildings near Pack Horse Public House, The Warwick School and Maiden Erlegh Chiltern Edge. Kidmore End’s nearest station is Tilehurst station, about 2.9 miles south-west of the centre. Nearby you’ll also find Royal Berkshire Regiment Museum (3.4 miles south) and Battle Hospital (3.4 miles south). For a walk, there’s Sonning Hill and Hartslock.