West Berkshire · England
Window Mastic in Shaw
Mastic around window and door frames, sills and patio doors for Shaw, backed by a one-year guarantee. Ask us for a quote.
- Water coming in at the bottom corners of a door
- Whistling draughts around closed windows
- Mastic that has split away from the wall
About our window mastic in Shaw
Most frames have an outside joint and an inside one. The external joint is the weather seal; inside, the joint between frame and plaster stops draughts and tidies the reveal. We seal one or both, depending on what’s needed. We work on window sills, composite doors and uPVC windows, and common reasons people get in touch are black, perished sealant on frames and cracked sealant at the sill ends.
Many houses in smaller places like Shaw have conservatories, garden rooms or patio doors. Those joints need the same attention as the main windows, and any older timber or sash windows need a sealant that suits them.
We guarantee the work for a year. If something is not right with it in that time, tell us and we will put it right.
- Place
- Shaw (RG14, RG18)
- Region
- West Berkshire
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Work for landlords, hotels and businesses
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
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.
Common questions in Shaw
Is Shaw in your area for window mastic?
Yes, Shaw is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or send us an email and let us know what needs doing.
Can you help a landlord with a rental near Newbury Racecourse station?
Yes, landlords and agents are among the people we work for. You can ring 0345 464 0079 or send us an email with the details for a clear quote.
Can you seal the gap between the frame and the plaster indoors?
Yes. Indoors, we seal between the frame and the plaster or reveal, using a paintable sealant if you want to decorate.
How much does window mastic cost in Shaw?
We don’t publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Can resealing stop a draught around my window?
Yes, if the air is getting in around the frame. If it’s through the window’s own seals or a hinge, that’s a different fix, and we will say so.
How many windows can you do in a day?
The work takes a few hours for a handful of frames, longer for a whole house. Access and the amount of old mastic make the biggest difference.
Do you have insurance?
Yes. We are fully insured.
Can you reach windows above the ground floor?
Normally, yes. Access is planned before we start, so mention the height and anything in the way.
Nearby places to Shaw
Other services in Shaw
What happens if it’s left?
The work is quick compared with the damage it prevents: it takes a few hours for a few frames, or a day or more for a whole house. Wait for damp to appear and there may be plaster and decorating to sort out too. Around Shaw, water from a failed joint in an older home can soak into timber and plaster, and that is a much bigger job than renewing the sealant.
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. You will know the price before we begin.
Why Shaw clients choose us
- Colour picked to suit the job
- An ARBOMaster approved applicator
- Quality sealants from Arbo and Everbuild
- Every job guaranteed for a year
Read how sealant jobs are priced or our reviews.
Honest limits
We will always be straight with you, so here’s what sealant can’t fix:
- Damp coming through the wall itself rather than the frame joint
- Condensation trapped between the panes
- A frame that has rotted at the joint
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think.
What we seal
- Aluminium frames
- Window sills
- Timber windows & doors
- Patio & French doors
- Composite doors
- uPVC windows
Quotes for window mastic in Shaw
You’ll get a clear quote before any work starts. It takes into account:
- The amount of work
- Working hours on commercial sites
- The number of rooms or windows
- Mould in or behind the old joints
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
What to tell us for a quote
Photos help, but a description is a good start. Try to tell us:
- Whether it has been sealed before
- The type of property
- Pictures of the joints, sent by email
- Access, such as stairs, a lift or height
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. When it suits you, phone 0345 464 0079 or send us an email.
Different surfaces, different methods
Timber windows & doors
Older timber windows in stone or brick can suit sand mastic rather than modern sealant. We will tell you which suits your home.
Composite doors
Draughts round the door leaf usually come from worn seals or adjustment, not the mastic. We will tell you if that is what we find.
Shaw homes and the weather
With historic houses such as Shaw House (about 0.3 miles north-west) nearby, there’s older building stock in the area around Shaw as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For an older house near a landmark such as Parish Church of St Mary, the joint between an old wall and a newer frame is generally the first place rain gets in. Schools such as St Joseph's Catholic Primary 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 Newbury Racecourse station, renewing tired window mastic between tenants heads off draught and damp complaints.
Shaw is about 1 mile north-east of Newbury, in West Berkshire. Across the RG14 area, we can carry out window mastic at your property. Shaw is one of 155 places in West Berkshire where we work for window mastic. Our Reading page covers work nearby.
Here we cover the RG14 and RG18 postcode area for window mastic. You will find streets such as Park Lane, Shaw Road and Kiln Road. Shaw is on the A4, so it’s easy for us to get to. We also cover the places around Shaw: Speenhamland (1 mile west), Donnington (1 mile north-west), Speen (1 mile west), Bagnor (2 miles west) and Stockcross (3 miles west). Larger places within reach include Burghfield Common (11 miles east), Hungerford (9 miles west), Spencers Wood (15 miles east), Calcot (12 miles east), Lambourn (12 miles north-west) and Burghfield Hill (11 miles east). Shaw is among the bigger towns we cover in West Berkshire.
Near you in Shaw
In Shaw, that means homes and buildings near Victoria Park, Trinity School and Trinity School, among other places. The closest station to Shaw is Newbury Racecourse station, about 0.8 miles south-east of the centre. Well-known places in the area include Donnington Castle (1.3 miles north-west) and West Berkshire Community Hospital (1 mile east). Green spaces nearby include Audrey's Meadow.
Looking after it afterwards
Looking after new joints is easy, and it makes a real difference:
- Keep paint off silicone joints
- Do not use solvent cleaners on the joint
- Keep timber frames painted
- Walk round the house once a year and look at the joints
Keep the new mastic undisturbed while it cures, following the cure time we give you. Do not point a pressure washer at the joints.
Signs to watch for: split or missing mastic, gaps, damp patches inside or black mould on the reveal. If you notice one, it’s time to get the joint looked at.
How the visit works
You do not need to clear the whole room or building before we come, just the space around the work. Everything nearby is protected, and the work takes a few hours for a few frames, or a day or more for a whole house in most cases. A visit to Shaw is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We check each frame and agree which ones need doing.
- We remove the old mastic and clean the frame and the wall.
- Where gaps are deep, backing rod goes in first.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- We clear up and check every joint is fully closed.
How to prepare
- Clear items away from the joints we are working on
- Mention any leaks or damp you’ve noticed
- Mention any tricky access
How to get a quote
Asking for a quote is easy: tell us what needs doing and where, and roughly how big it is. A few photos by email make the job easier to understand, and we will come back to you with a quote.