West Berkshire · England
Old Warren Sand Mastic
Window and door surrounds in Old Warren need attention? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Open joints round the window box
- Modern sealant on a period surround
- Mastic worn away on windows facing the weather
Sand mastic in Old Warren, done properly
Burnt sand mastic is a traditional material that sits naturally against stone and brick. It suits period and listed homes, where modern sealant can look out of place. If you have open joints round the window box and silicone on a period window that looks wrong, we can put it right, on brick reveals, sash and case windows and timber door frames alike.
Mastic can only go onto a dry, clean joint, so window work in Old Warren is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Place
- Old Warren (RG7)
- Region
- West Berkshire
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Leave it or put it right?
An open joint round the frame lets weather in. Left, water can reach the timber and the wall, so dealing with it now protects both. Around Old Warren, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are unsure, phone 0345 464 0079 or send us an email and we will give you an honest view and a quote.
Why book with us
- We never seal over old sealant
- Every job guaranteed for a year
- 4.9 on Google from 180+ five-star reviews
- Domestic, commercial and hotel work
Take a look at what affects the cost or our reviews.
Landlord and commercial work in Old Warren
If you manage several properties in or around Old Warren, jobs at different addresses can be quoted together. Send us the addresses and the work at each.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
When something else is needed
To be straight with you, there are a few things sealant will not fix:
- Decayed frames that need repair
- Sash cords, weights and draught-proofing of the sashes
- Cracked or broken glass
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we will tell you honestly.
What we seal
- Tenement windows
- Stone surrounds
- Timber door frames
- Period & listed homes
- Brick reveals
- Sash and case windows
Also near Old Warren
More services for Old Warren
What sand mastic looks like in Old Warren
Historic houses like The Vyne (about 4.8 miles south) are a reminder that the area around Old Warren 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. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you live in an older home near The Parish Church of St.Saviours, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Rented homes near Aldermaston station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about.
Old Warren is about 2 miles north-east of Tadley, in West Berkshire. We carry out sand mastic for householders, landlords and businesses in Old Warren. Our West Berkshire coverage runs to 155 places, and Old Warren is one of them. Reading is on our list too, about 8 miles from Old Warren.
All of RG7 is within our area for sand mastic, from the main roads to the quietest streets. If you’re just outside Old Warren, we cover Aldermaston Soke (1 mile south), Padworth Common (1 mile north), Pamber Heath (1 mile south), Padworth (1 mile north) and Silchester (2 miles south-east). Larger places within reach include Newbury (9 miles west), Thatcham (6 miles west), Burghfield Common (3 miles north-east), Speenhamland (9 miles west), Spencers Wood (6 miles east) and Calcot (5 miles north-east).
Local landmarks in Old Warren
Typical jobs here are in homes near Padworth Common Local Nature Reserve and the streets around them. The nearest railway station is Aldermaston station, about 2.1 miles north-west of the centre. Well-known places in the area include Calleva Museum (1.5 miles south-east). Not far away are Hosehill Lake.
Can I do it myself?
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 does not work out, we can still put it right.
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
What happens on the day
On the day, we start by going over the job with you, so there are no surprises. We protect the surfaces around the joints before any work starts. Most jobs take a few hours per window, depending on the condition of the joints. For a village or hamlet like Old Warren, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- Each surround is checked first.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic isn’t too thick.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Preparing for the visit
- Tell us about any water getting in
- Mention any parking rules near the property
- Let us know about earlier repairs to the joints
Getting a quote
Want a quote for sand mastic? Please ring 0345 464 0079 or send us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.
Read more
Old Warren questions
Is Old Warren 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.
Do you work for landlords with property near Aldermaston station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or email us and tell us about the property, and we will send you a clear quote.
Can I paint the new mastic?
The usual advice is to leave sand mastic unpainted. Ask us before you decorate around it and we’ll talk you through it.
Can I do it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.
Will it make a mess?
No. The area is protected while we work and cleaned up afterwards.
Do you offer different sealant colours?
We’ll suggest a colour to suit the surroundings, from white and clear to greys and other shades. The product needed can limit the range.
How long does sand mastic take to go off?
A skin forms quite soon, but full hardening takes longer. We’ll tell you what to expect for your job.
How long does sand mastic take?
Typically it takes a few hours per window, depending on the condition of the joints. Bigger jobs take longer, and we’ll tell you how long to expect.
Looking after it afterwards
To keep the joints looking good and working properly:
- Check with your local planning authority if your home is listed
- Clear gutters so water does not pour onto the windows
- Renew mastic before redecorating the windows
- Avoid heavy scraping on the mastic joint
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look before trying a quick fix.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber, which can lead to rot.
What affects the cost of sand mastic
We do not publish a price list, because no two jobs are the same. The quote depends on:
- The size of the job
- How easy the joints are to reach
- The type of sealant required
- The old material and how stubborn it is
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
What we need to know
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- A few photos by email, if you can
- The type of property
- Any access issues, like height or stairs
- Whether it has been sealed before
If you are in Old Warren and need sand mastic, phone 0345 464 0079 or email us. Tell us what the problem is and where, and you’ll get a clear quote before work begins.