Reading · England
Window Mastic in Dunsden Green
Window mastic for Dunsden Green, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Black, perished sealant on frames
- Draughts coming in around windows and doors
- Untidy mastic left by window fitters
Window mastic in Dunsden Green
If you can feel air around a shut window, the gap is often at the frame. Resealing that joint can make a room feel noticeably less draughty. Where the air is getting in through the window itself, we will say so. If you are dealing with draughty joints inside around the window and damp patches on the reveal after heavy rain, we can help, whatever the surface.
Around Dunsden Green, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
The work is covered for a year after we finish. If there’s a problem with it, please phone 0345 464 0079 or email us.
- Location
- Dunsden Green (RG4)
- Wider area
- Reading
- Cover
- A year, on every job
- Quote
- A clear price before we start
- Call
- 0345 464 0079
- Updated
- 26 October 2026
How it works
We bring everything the job needs with us. After a quick look at the joints together, we protect the area and start. It normally takes a few hours for a handful of frames, longer for a whole house. Somewhere like Dunsden Green needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First we look at every frame and agree the list.
- The old mastic is cut out and the surfaces cleaned back.
- We fit backing rod in deep gaps so the sealant is the right depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Finally we tidy up and check each joint.
Before we arrive
- Mention if the joints have been sealed before
- Keep pets and children clear of the area while we work
- Let us know about parking restrictions
Getting a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. Whenever you’re ready, phone 0345 464 0079 or email us.
Related advice
What affects the quote in Dunsden Green
The quote reflects the job in front of us. We look at:
- The size of the job
- Which sealant suits the joint
- Access and height
- Whether there’s mould to deal with
The cost reflects the work involved, not a rough estimate. That is why we ask a few questions first.
What to tell us for a quote
You don’t need to know the technical terms. Just tell us:
- What’s wrong with the joints now
- Any previous sealing or DIY work
- Photos by email, if that is easy
- Whether it’s a home or a business
There’s no standard price list, because every job is different. Instead, we give you a clear quote for your job. To get started, phone 0345 464 0079 or email us.
Window mastic in Dunsden Green: local notes
With historic houses such as Greys Court (about 3.9 miles north) nearby, there’s older building stock in the area around Dunsden Green 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, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For landlords with property near Reading station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. For an older house near a landmark such as All Saints Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Managing a site like St Martin's Catholic Primary School? Then its window and door frames need their mastic kept sound, just like a home’s.
Dunsden Green is about 1 mile north-east of Caversham, in Reading. Every kind of property in Dunsden Green can book us for window mastic. Every job comes with our one-year guarantee. 34 places in Reading are on our list.
Every address in RG4 is within our area for window mastic, from the main roads to the quietest streets. If you’re just outside Dunsden Green, we cover Littlestead Green (1 mile west), Play Hatch (1 mile south), Caversham Park Village (1 mile south-west), Emmer Green (1 mile south-west) and Caversham (1 mile south-west). Within a short drive, we also cover Norcot (4 miles south-west), West Reading (4 miles south-west), Tilehurst Within (5 miles south-west), Shinfield (6 miles south), Arborfield Garrison (8 miles south) and Horncastle (5 miles south-west).
What’s near Dunsden Green
In Dunsden Green, that means homes and buildings near Ali's Pond Local Nature Reserve, Highdown School and Sixth Form Centre and The Flowing Spring pub, among other places. For rail, the closest station is Reading station, roughly 2.6 miles south-west of the centre. A little further out are Royal Berkshire Hospital (2.8 miles south) and Berkshire Medical Heritage Centre Museum (2.8 miles south). Not far away are Sonning Hill and South Lake.
What happens if it’s left?
Failed mastic is not a reason to replace sound windows. Where the frames are sound, new mastic usually deals with draughts and leaks at the edges. If we find failed glass units or worn seals, we’ll tell you. Where a wall is exposed, as many are in small places like Dunsden Green, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
What you get with us
- Full insurance on every job
- Over 20 years’ experience
- A 12-month guarantee on all work
- Neat joints and a tidy finish
Towns and villages near Dunsden Green
What else we do in Dunsden Green
Landlord and commercial work in Dunsden Green
We also work for property managers and facilities teams. Several sites can go on one quote, and we are fully insured.
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
FAQs for Dunsden Green
Do you work for landlords with property near Reading station?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or send us an email and tell us about the property, and we will send you a clear quote.
Will you come out to Dunsden Green?
Yes, smaller places are covered as well as towns. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Do you do commercial work?
Yes, regularly. Larger jobs can be planned room by room or area by area.
When is the sealant fully cured?
Cure times vary by product and the temperature. We tell you how long to leave it before we go.
Should I try DIY first?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. If it does not work out, we can redo it.
Does the work come with a guarantee?
Yes. Every job comes with our one-year guarantee, and we’re ARBOMaster approved applicators.
What do you put in the joint?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
What do you need from me for a quote?
Only a few details: where it is, what you’ve noticed and how we reach it. After that, simply ring 0345 464 0079 or send us an email.
Aftercare tips
Aftercare is simple, and it makes a real difference:
- Wash the frames with mild soapy water
- Keep solvents and bleach off the sealant
- Air rooms to keep condensation down around windows
- Do not aim a pressure washer at the joints
Timber frames need their paint kept up, because bare, wet timber moves more and pulls at the joint. Keep paint off the silicone itself.
A small gap around a frame only grows. As old mastic keeps shrinking, the gap widens, and a cold room gets colder. A new joint closes it up.
Different surfaces, different methods
uPVC windows
Plastic frames move a lot between a hot afternoon and a cold night, so we use a flexible, low-modulus sealant. White is the usual colour, with brown, anthracite grey and black for coloured frames.
Window sills
Masonry sills can have joints where water gets in, and the joint under the frame can let rain run behind. Those are sealed with a product suited to stone or concrete.