Wokingham · England
Window Mastic in Whistley Green
Professional window mastic in and around Whistley Green, with every bit of old sealant taken out first and a one-year guarantee.
- Untidy mastic left by window fitters
- Whistling draughts around closed windows
- Cracked internal joints between frame and plaster
Aftercare tips
Simple care keeps the joints in good condition. We recommend:
- Do not aim a pressure washer at the joints
- Avoid harsh chemicals near the mastic
- Wipe condensation off the frames
- Keep paint off silicone joints
A yearly look round the frames is enough. Small splits are simple to catch before they leak, and if anything looks wrong, just phone 0345 464 0079 or drop us an email.
Water gets in quietly when mastic fails. Often the first sign is a damp patch inside or flaking paint on the reveal. Early resealing stops it reaching that point.
Window mastic in Whistley Green
Behind a thin line of old mastic there’s sometimes a deep void. Packing it solid with sealant gives a joint that cannot flex, so deep gaps get backing rod first. That way the new bead bonds to the frame and the wall only. If you’re dealing with cracked internal joints between frame and plaster and old mastic that has gone black or come away, we can put it right, on uPVC windows, aluminium frames and composite doors alike.
In a village or hamlet like Whistley Green, 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.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Location
- Whistley Green (RG10)
- Wider area
- Wokingham
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Different surfaces, different methods
Patio & French doors
Not every patio door leak is a mastic problem: blocked drain slots, worn brush seals and threshold details can let water in too. We look for the cause first.
Composite doors
A composite door normally sits in a plastic outer frame, so its perimeter joint is sealed much like a window. The bead is colour-matched to the frame.
How it works
Good joint work is mostly preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. In total, it usually takes anything from an hour or two to a full day, depending on how many frames there are. Somewhere like Whistley Green needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We check each frame and agree which ones need doing.
- Next the failed sealant is cut away and the joint cleaned.
- Where gaps are deep, backing rod goes in first.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- Every joint is checked before we leave.
Preparing for the visit
- Mention any tricky access
- Mention any leaks or damp you’ve noticed
- Plan for the work area to be out of bounds to pets and children
Get a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
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More services for Whistley Green
Frames and glazing around Whistley Green
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you let a flat or house near Twyford station, renewing tired window mastic between tenants heads off draught and damp complaints.
Whistley Green is about 2 miles east of Woodley, in Wokingham. Our applicators cover window mastic for householders, landlords and businesses in Whistley Green. Whistley Green is one of 35 places in Wokingham we cover.
Work in RG10 is quoted and booked the same way as anywhere else. Window mastic is available to properties on Lodge Road, Broadwater Lane and Nursery Gardens and the roads around them. Other places close to Whistley Green include Hurst (1 mile south-east), Twyford (1 mile north), Ruscombe (1 mile north), Charvil (1 mile north-west) and Woodley (2 miles west). Further out, we also cover Reading (5 miles west), Wokingham (4 miles south), Earley (4 miles south-west), Crowthorne (7 miles south-east), Lower Earley (3 miles south-west) and Newtown (4 miles west).
Local landmarks in Whistley Green
Typical jobs here are in homes near Loddon Nature Reserve, Waingels College and Elephant and Castle pub and the streets around them. The closest station to Whistley Green is Twyford station, about 1 mile north of the centre. A little further out are Berkshire Library & Museum of Freemasonry (2.9 miles south-west) and Wokingham Hospital (3.5 miles south). Green spaces nearby include Lavells Lake and Sonning Hill.
When to call us in Whistley Green
Mastic ages in the weather. UV light hardens the outside of the bead, until it loses its stretch and starts to crack.
Signs it’s time to call us include:
- Mastic that has split away from the wall
- Whistling draughts around closed windows
- Untidy mastic left by window fitters
- Leaking joints at the ends of sills
If you look after a building such as St Nicholas Church of England Primary, larger buildings have plenty of frames, and the mastic around each one ages.
What to look for in a quote
- Are they insured?
- Whether they seal over old material or remove it
- What happens if they find a problem under the old sealant
- Who does the work, and how experienced they are
For landlords and businesses
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
We work for letting agents and landlords as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
What affects the quote in Whistley Green
We do not publish a price list, because no two jobs are the same. What we look at:
- Access and height
- The number of rooms or windows
- How much old sealant there is and how hard it is to remove
- The amount of work
Doing several joints on one visit generally makes better use of the time than several visits. We will give you a clear quote for the lot.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- The type of property
- If someone has resealed it before
- Pictures of the joints, sent by email
- How we’d reach the joints
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. Whenever you are ready, ring 0345 464 0079 or send us an email.
Questions from Whistley Green
Can you do window mastic in Whistley Green?
Yes, Whistley Green is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or email us and let us know what needs doing, and we’ll give you a clear quote.
Do you cover smaller places like Whistley Green?
Yes, Whistley Green is covered. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Is the work guaranteed?
Yes, with our one-year guarantee. Keeping drainage clear and checking the joints yearly helps them last.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
How long does it take to reseal the windows on a house?
A few frames take a few hours, while a whole house takes longer. We confirm the timing with your quote.
Can you do several jobs on one visit?
Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Do I have to be there?
It depends on the job. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
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. We use products from Arbo and Everbuild.
Why deal with it now?
A quick bead over the top of old mastic looks like an easy fix, but new sealant cannot bond to old, crumbling mastic. It peels before long, and water still gets in behind. Proper resealing starts with removing the old joint. In a small place like Whistley Green, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
Why book with us
- Any old sealant cut out fully, not covered over
- Sanitary silicone with an anti-fungal additive in wet areas
- 20+ years of sealant experience
- We’re fully insured
Take a look at what affects the cost and our reviews.