West Berkshire · England
Window Mastic in Cold Ash
Mastic around window and door frames, sills and patio doors in Cold Ash, with a one-year guarantee on every job. Ask us for a quote.
- Old mastic that has gone black or come away
- Rain getting in at the frame or under the sill
- Cold air getting in at the frame edge
Window mastic in Cold Ash
Whether it’s one leaking patio door or every frame on the house, the work is priced before anything is done. Just call 0345 464 0079 or drop us an email and tell us how many frames there are and how they’re reached for window mastic in Cold Ash. Common call-outs are for damp patches on the reveal after heavy rain and whistling draughts around closed windows, across uPVC windows, aluminium frames and timber windows & doors.
In a village or hamlet like Cold Ash, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
The work is covered for a year after we finish. If there’s a problem with it, please phone 0345 464 0079 or drop us an email.
- Where
- Cold Ash (RG18)
- Region
- West Berkshire
- Cover
- One year on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Windows and doors in Cold Ash
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Shaw House (about 2.4 miles west) nearby, there’s older building stock in the area around Cold Ash 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’s traditional sand mastic.
If you live in an older home near St. Mark's Church, the joint between an old wall and a newer frame is normally the first place rain gets in. Schools such as Cold Ash St Mark's C.E. School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. If you let a flat or house near Thatcham station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Cold Ash is about 2 miles north of Thatcham, in West Berkshire. Homes, rented property, offices and hotels in Cold Ash can book us for window mastic. Every job comes with our one-year guarantee. Cold Ash is one of 155 towns and villages in West Berkshire where we work for window mastic. Reading is on our list too, about 13 miles from Cold Ash.
Every address in RG18 is covered for window mastic. You will find streets such as Harewood Drive, Johnson's Lane and Walters Close, all of which we cover. Neighbouring places we cover for window mastic include Ashmore Green (1 mile south-west), Stone Copse (1 mile west), Longlane (2 miles north-west), Thatcham (2 miles south) and Wellhouse (2 miles north). Further out, we also cover Newbury (3 miles south-west), Burghfield Common (9 miles east), Speenhamland (3 miles south-west), Hungerford (11 miles west), Spencers Wood (13 miles east) and Calcot (9 miles east).
Landmarks near Cold Ash
Locally, jobs take us to homes and businesses close to Kennet School. Cold Ash’s nearest station is Thatcham station, about 2.3 miles south-east of the centre. A little further out are West Berkshire Community Hospital (1.8 miles south-west) and British Balloon Museum & Library Ltd (3 miles south-west). Green spaces nearby include Nature Discovery Centre.
Also near Cold Ash
More services for Cold Ash
Keeping the joints in good condition
A little care helps the new joints last. Our advice:
- Do not paint over the silicone
- Avoid blasting the frames with a pressure washer
- Wipe condensation off the frames
- Make sure the drainage slots aren’t blocked
Most silicone sealants will not take paint, so if you are planning to paint the frames or walls, tell us beforehand. There are paintable sealants for joints that need it.
A small gap around a frame only grows. As the old mastic shrinks further, more air gets through, and a cold room gets colder. Resealing closes it.
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
Surface by surface
Composite doors
A composite door generally sits in a plastic outer frame, so its perimeter joint is sealed much like a window. We match the colour to the frame.
Patio & French doors
Water at the foot of a door frame isn’t always the mastic: blocked drain slots, worn brush seals and threshold details can let water in too. We check before we reseal.
What affects the cost of window mastic
You will get a clear quote before any work starts. It takes into account:
- The number of rooms or windows
- How much there is to do
- How much old sealant there is and how hard it is to remove
- Whether there’s mould to deal with
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part, and we’ll explain the quote if you ask.
Helping us quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- The problem you’ve noticed
- If it’s domestic, commercial or a hotel
- Where the job is, and your postcode
- Access, such as stairs, a lift or height
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we will explain what’s involved.
The process
We bring everything the job needs with us, so there’s nothing for you to buy. After a quick look at the joints together, the area is protected and the work begins. It normally takes a few hours for a handful of frames, longer for a whole house. For a village or hamlet like Cold Ash, 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 frame is looked over and we agree which ones need resealing.
- The old mastic is cut out and scraped back to clean surfaces.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
Getting ready for the visit
- Mention any tricky access
- Clear items away from the joints we are working on
- Mention if the joints have been sealed before
How to get a quote
We quote each job on its own. Just phone 0345 464 0079 or send us an email with the details.
Advice
When it is not the sealant
Before booking, it’s worth knowing the limits too:
- Rotten timber, which needs a joiner first
- Broken hinges, locks or handles
- Misting between the panes of a double-glazed unit (that needs a new unit)
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly before you book.
What we seal
- Timber windows & doors
- uPVC windows
- Composite doors
- Patio & French doors
- Window sills
- Aluminium frames
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we will give you a quote.
Housing providers, facilities teams and property managers book us too. Several sites can go on one quote.
Your questions about window mastic in Cold Ash
Can you help a landlord with a rental near Thatcham station?
Yes, landlords and agents are among the people we work for. You can ring 0345 464 0079 or email us with the details for a clear quote.
Is Cold Ash in your area for window mastic?
Yes, Cold Ash is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or email us and let us know what needs doing.
Will you leave a mess?
No. The area is protected while we work and cleaned up afterwards.
Can you do several jobs on one visit?
Yes. Just list everything you need and you’ll get one quote.
Should I try DIY first?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs.
What should I tell you?
Let us know what needs doing and where. We’ll ask anything else we need to know.
Do you work on first-floor windows?
Yes, where they can be reached safely. Tell us about access when you get in touch so we can plan the job.
Do you guarantee window mastic?
Yes, with our 12-month guarantee. A yearly look at the joints helps them last.