West Berkshire · England
West Ilsley Window Mastic
Window and door frames in West Ilsley need attention? We remove the old material, prepare the joints and seal them properly, with a one-year guarantee.
- Untidy mastic left by window fitters
- Old mastic that has gone black or come away
- Whistling draughts around closed windows
Why it’s worth doing now in West Ilsley
Running fresh sealant over the old joint is tempting, but it will not grip old, dirty sealant. It peels before long, and water still gets in behind. The old mastic has to come out. Older cottages and farmhouses around West Ilsley can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
The cost reflects the work involved, not guesswork. That is why we ask about the job first and agree the price before starting.
What you get with us
- Colour picked to suit the job
- Domestic, commercial and hotel work
- Rated 4.9 stars on Google
- Colour agreed with you before any work starts
Take a look at what affects the cost and what customers say.
About our window mastic in West Ilsley
The mastic around a window or door seals the gap between the frame and the wall. Once that seal fails, wind and rain find the gap. Our applicators cut it out and replace it with a flexible, weatherproof sealant. We’re often asked to deal with rain getting in at the frame or under the sill and leaking joints at the ends of sills, across composite doors, timber windows & doors and window sills.
Mastic can only go onto a dry, clean joint, so window work in West Ilsley is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Where
- West Ilsley (RG20)
- Wider area
- West Berkshire
- Cover
- 12 months on all our work
- Quote
- A clear price before work begins
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Looking after it afterwards
After the cure time, these simple habits help:
- Air rooms to keep condensation down around windows
- Keep jet washers away from the mastic
- Paint up to the joint, not over it
- Keep paint and stain on wooden frames in good order
Try not to touch the new joint while it cures, following the cure time we give you. Do not point a pressure washer at the joints.
A failed joint lets water into the wall a little at a time. You might not see it until plaster blows or a damp patch appears inside. Early resealing stops it reaching that point.
How it works
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, carry out the job and tidy away. It usually takes anything from an hour or two to a full day, depending on how many frames there are. Somewhere as small as West Ilsley, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
Preparing for the visit
- Plan for the work area to be out of bounds to pets and children
- Clear items away from the joints we are working on
- Where the joints are inside, avoid wetting them before we arrive
Get a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work before giving you a price.
Read more
What we can’t put right
It helps to know what we can’t do too:
- Damp coming through the wall itself rather than the frame joint
- Draughts through the window seals rather than the frame
- Condensation trapped between the panes
If you are not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer.
Surfaces we seal
- Composite doors
- Patio & French doors
- Timber windows & doors
- Window sills
- uPVC windows
- Aluminium frames
Also near West Ilsley
Other services in West Ilsley
Windows and doors in West Ilsley
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Around West Ilsley, as everywhere, window mastic is only as good as the preparation behind it. For an older house near a landmark such as Church of All Saints, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
West Ilsley is about 6 miles south-west of Didcot, in West Berkshire. If you need window mastic in West Ilsley, please phone 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover West Berkshire, West Ilsley included. Across West Berkshire, we cover 155 places, and West Ilsley is one of them. For nearby work, see our Oxford page, about 15 miles away.
Work in RG20 works the same way as everywhere else we cover. Streets in the area include Bury Lane and Churchway, and we cover them all. We also cover the places around West Ilsley: Catmore (2 miles south-west), Stanmore (2 miles south), Farnborough (3 miles west), Brightwalton (4 miles south-west) and Brightwalton Green (4 miles south-west). We also work in nearby towns such as Newbury (10 miles south), Thatcham (10 miles south), Burghfield Common (15 miles south-east), Speenhamland (9 miles south), Hungerford (12 miles south-west) and Calcot (13 miles south-east).
Local landmarks in West Ilsley
In West Ilsley, that means homes and buildings near The Harrow pub and the streets around them. Well-known places in the area include Atlas Computer Laboratory (2.4 miles north). Green spaces nearby include Mowbray Fields and Churn Hill.
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
What affects the cost of window mastic
The price is agreed before any work begins. It takes into account:
- Whether there’s mould to deal with
- Whether old sealant or filler has to be cut out
- Access and height
- The type of sealant required
Doing several joints on one visit generally makes better use of the time than several visits. You will get one clear quote for the whole job.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- Whether it’s a home or a business
- Where the property is
- If someone has resealed it before
- Any access issues, like height or stairs
To get a quote, phone 0345 464 0079 or drop us an email with the location and a short description of the problem. You’ll have a clear quote before any work starts.
West Ilsley questions
Is West Ilsley in your area for window mastic?
Yes, West Ilsley is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job.
Is West Ilsley within the area you cover?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Can I add another job to the visit?
Yes. More than one area can go on one quote.
How long should I leave it?
Different products cure at different speeds, so please follow the time we give you.
How long does it take to reseal the windows on a house?
A handful of frames is a short visit. We confirm the timing with your quote.
Do you have sealant for grey or black windows?
Yes, we choose a colour to suit the frame. Anthracite grey, black, brown and white cover most frames, with clear as an option.
Do I have to be there?
We need access to the joints, so we’ll agree that with you when we book. Indoors, that usually means someone at home.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.
How the job changes by surface
Aluminium frames
Coated aluminium needs a compatible sealant and we avoid acetoxy silicones, which can react with some metals. Neutral-cure sealant is the safe choice.
Patio & French doors
Patio and French doors have the longest joints on most houses. The threshold and the bottom corners take the most water, so they get particular care.