West Berkshire · England
Stockcross Window Mastic
Mastic around window and door frames, sills and patio doors for homeowners, landlords and businesses in Stockcross. Fully insured, ARBOMaster approved and guaranteed for a year.
- Cracked sealant at the sill ends
- Cracked internal joints between frame and plaster
- Whistling draughts around closed windows
Surface by surface
Window sills
Stone and concrete sills have their own joints, and the joint under the frame can let rain run behind. Those are sealed with a product suited to stone or concrete.
Patio & French doors
Patio and French doors have the longest joints on most houses. Most leaks start at the bottom corners, so they get particular care.
How we handle window mastic in Stockcross
There are two joints on most windows. Outside, the mastic keeps rain out; the internal joint closes the gap to the plaster and stops draughts. Either or both can be done. Typical jobs include water coming in at the bottom corners of a door and mastic that’s falling out in pieces, on composite doors, uPVC windows and timber windows & doors.
Homes in small places like Stockcross often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
Whatever the size of the job, you get the same 12-month guarantee in Stockcross and across West Berkshire.
- Location
- Stockcross (RG20)
- Wider area
- West Berkshire
- Guarantee
- 12 months on all our work
- Price
- A clear price before we start
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Signs you need window mastic in Stockcross
Joints that are too thin or too deep fail early. A skim of sealant over a wide gap soon tears, and a gap filled solid can’t flex. That is what backing rod is for.
If you can see any of these, it’s time to have the joints looked at:
- A bead that doesn’t match the frame
- Untidy mastic left by window fitters
- Gaps between the frame and the inside reveal
- Black, perished sealant on frames
For an older house near a landmark such as Church of St John, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Before you book anyone
- What preparation is included
- Is the old sealant removed completely?
- What happens if the job turns out different
- Who does the work, and how experienced they are
Nearby places to Stockcross
Also in Stockcross
Windows and doors in Stockcross
With historic houses such as Benham Park (about 0.6 miles south-east) nearby, there’s older building stock in the area around Stockcross as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. 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.
For site and facilities teams at buildings such as Stockcross C.E. School, larger buildings have plenty of frames, and the mastic around each one ages. For landlords with property near Newbury station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Stockcross is about 3 miles north-west of Newbury, in West Berkshire. Stockcross gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our West Berkshire coverage runs to 155 places, Stockcross among them. We also work in Reading, about 17 miles from Stockcross.
Jobs for window mastic in RG20 is quoted and booked the same way as anywhere else. Streets in the area include Ermin Street, Chapel Road and Glebe Lane. We also cover the places around Stockcross: Marsh Benham (1 mile south-west), Wickham Heath (1 mile north-west), Bagnor (1 mile east), Speen (1 mile south-east) and Boxford (2 miles north). Further out, we also cover Newbury (3 miles south-east), Thatcham (5 miles east), Burghfield Common (14 miles east), Hungerford (6 miles west), Calcot (14 miles east) and Lambourn (9 miles north-west).
Around Stockcross
Around Stockcross, our work takes us to homes and buildings near Trinity School, The Rising Sun pub and Hamstead Marshall Park. The nearest railway station is Newbury station, about 2.6 miles south-east of the centre. Well-known places in the area include British Balloon Museum & Library Ltd (2.5 miles east) and West Berkshire Community Hospital (3.7 miles east). The countryside around Stockcross includes Rack Marsh.
When something else is needed
Sealant is not the answer to every problem, and we’ll tell you before any work starts. Sealant won’t put right:
- Faulty window hardware
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Draughts through the window seals rather than the frame
Not sure which it is? You can phone 0345 464 0079 or send us an email and we will tell you honestly.
Surfaces we seal
- Patio & French doors
- Composite doors
- Window sills
- Timber windows & doors
- uPVC windows
- Aluminium frames
How the visit works
There’s no need to move everything out before we come, just the space around the work. We protect the rest, and the job takes a morning for a couple of windows and a door for a typical job. Somewhere like Stockcross needs a little journey planning: 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.
- We check how each frame can be reached safely.
- 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.
Getting ready for the visit
- Mention any tricky access
- Clear items away from the joints we’re working on
- Where the joints are inside, avoid wetting them before we arrive
Getting a quote
For a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
Advice
Should I try it myself first?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
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 doesn’t work out, we can still put it right.
Why act early in Stockcross
Draughts and leaks don’t always mean new windows. Where the frames are sound, new mastic usually deals with draughts and leaks at the edges. Problems with the glass or gaskets are for a window company, and we will say so. Around Stockcross, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, along with when we can work on site. Call for a quick quote and we’ll explain what it covers.
Why choose Mr Mastic in Stockcross
- 4.9 on Google from 180+ five-star reviews
- A 12-month guarantee on all work
- Quality sealants from Arbo and Everbuild
- Approved under the ARBOMaster scheme
Take a look at what affects the cost and our reviews.
Quotes for window mastic in Stockcross
Jobs vary more than people expect. The main factors:
- Working hours on commercial sites
- How much old sealant there is and how hard it is to remove
- Whether the work is at height
- Mould in or behind the old joints
Leaving a failed joint normally makes the job bigger, not smaller. If you’re not sure whether it needs doing, phone 0345 464 0079 or email us and we will give you an honest view and a quote.
Helping us quote
You do not need to know the technical terms. Just tell us:
- If someone has resealed it before
- Where the property is
- Roughly how big the job is
- Pictures of the joints, sent by email
It all starts with a short chat. Describe the problem, the location and the size of the job. Whenever you’re ready, phone 0345 464 0079 or send us an email.
FAQs for Stockcross
Do you cover smaller places like Stockcross?
Yes. Stockcross is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is Stockcross in your area for window mastic?
Yes. Our work covers London and the South East, and Stockcross is part of that. You can phone 0345 464 0079 or email us and tell us what needs doing, and we will give you a clear quote.
Can new sealant go over the old?
No, it will not last. It may look fine at first, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Can you do the inside joint as well?
Yes. Draughts often come through the inside gap too, so sealing both is often worthwhile.
Is there any odour?
There can be a smell while the sealant cures, which fades as it sets. Opening a window helps.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Do I need to be at home?
If the work is inside, we need someone to let us in. Once we’ve agreed the job, you do not need to watch us work.
What sealant do you use?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference, and we will explain our choice.