Wokingham · England
Cockpole Green Window Mastic
Problem with your window and door frames in Cockpole Green? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Gaps left after new windows were fitted
- Gaps where the sill meets the wall
- Black, perished sealant on frames
Window mastic in Cockpole Green
Around Cockpole Green we seal all kinds of frames: from uPVC casements to timber and aluminium, along with patio doors, French doors and sills. The sealant is chosen to suit the frame material and the wall. Typical jobs include gaps left after new windows were fitted and mastic that’s falling out in pieces, across composite doors, uPVC windows and window sills.
Somewhere as small as Cockpole Green, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
We stand behind the work with a 12-month guarantee.
- Where
- Cockpole Green (RG10)
- Region
- Wokingham
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What happens on the day
You don’t 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 most of a day for a typical house, less for a few frames in most cases. Somewhere like Cockpole Green needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Where the gap is deep, backing rod goes in first.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- Every joint is tooled smooth and checked before we leave.
Before we arrive
- Let us know about parking restrictions
- Mention if the joints have been sealed before
- Let us know if you’ve seen damp or leaks
Get a quote
Want a quote for window mastic? Please call 0345 464 0079 or email us and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Advice
Cockpole Green questions
Is Cockpole Green in your area for window mastic?
Yes. Our work covers London and the South East, and Cockpole Green is part of that. Just phone 0345 464 0079 or email us with a few details of the job, and we will send you a clear quote.
Can you help a landlord with a rental near Shiplake station?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can go on one quote. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we will give you a clear price.
Do you seal inside as well as outside?
Yes. Inside, the joint between frame and plaster is sealed neatly, using a paintable sealant if you want to decorate.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do. Working times can be discussed when we quote.
What does window mastic cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote.
Will there be a smell?
Sometimes, a little. It fades as the sealant cures, and ventilation helps.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Can you quote for more than one area?
Yes, we can. Several rooms, windows or areas can go on one quote.
Do you need window mastic in Cockpole Green?
A lot of older mastic was never designed to stay flexible. Once it has hardened, the frame’s movement tears it from the wall, and a gap opens along one edge.
Most people get in touch when they notice something like this:
- Gaps between the frame and the inside reveal
- Black, perished sealant on frames
- Cold air getting in at the frame edge
- Cracked or shrunken mastic around the frame
If you look after a building such as Crazies Hill CofE Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Before booking anyone
- Which colour the sealant will be
- What preparation is included
- How long to leave it before use
- What insurance they hold
Surface by surface
Composite doors
Draughts round the door leaf usually come from worn seals or adjustment, not the mastic. We seal the frame and let you know about anything else.
Aluminium frames
Aluminium needs a sealant that bonds to coated metal, and acetoxy silicones are not used, as they can attack some metals. We use a neutral-cure product.
Work for landlords, hotels and businesses
If you manage several properties in or around Cockpole Green, several properties can be quoted together. Just tell us the addresses and what each one needs.
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
Frames and glazing around Cockpole Green
Historic houses like Harleyford Manor (about 2.7 miles north-east) are a reminder that the area around Cockpole Green has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. Rainfall in the South East is lower than in much of the UK, 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 St Paul's Mission Church, the joint between an old wall and a newer frame is usually the first place rain gets in. Rented homes near Shiplake station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Cockpole Green is about 5 miles south-west of Marlow, in Wokingham. Jobs in Cockpole Green get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Our area takes in 35 places across Wokingham. Reading is on our list too, around 8 miles away.
Our applicators cover all of RG10 for window mastic and the streets around it. Whether your property is on Warren Row Road, Hatch Gate Lane and Ashley Hill Place or anywhere close by, our applicators can take on the job. If you are just outside Cockpole Green, we cover Bowsey Hill (1 mile south-east), Warren Row (1 mile east), Remenham Hill (1 mile north-west), Wargrave (2 miles south) and Frogmill (2 miles north-east). We also work in nearby towns such as Reading (8 miles south-west), Wokingham (8 miles south), Woodley (5 miles south), Earley (7 miles south-west), Crowthorne (11 miles south) and Lower Earley (7 miles south-west).
Local landmarks in Cockpole Green
In Cockpole Green, that means homes and buildings near Mill Meadows. The nearest railway station is Shiplake station, roughly 1.7 miles south-west of the centre. A little further out are St Mark's Hospital (4.5 miles east) and Frazer Nash Archives (2 miles west). Not far away are Hurley Chalk Pit and Weycock Hill.
What happens if it’s left?
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. If we find failed glass units or worn seals, we will tell you. In a small place like Cockpole Green, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
Why us?
- Sanitary silicone with an anti-fungal additive in wet areas
- Homes, businesses and hotels
- We leave the area clean and tidy
- Colour picked to suit the job
Towns and villages near Cockpole Green
Also in Cockpole Green
Aftercare tips
After the cure time, these simple habits help:
- Don’t aim a pressure washer at the joints
- Make sure the drainage slots aren’t blocked
- Wash the frames with mild soapy water
- Air rooms to keep condensation down around windows
On timber frames, keep the paintwork in good order, since wood that gets wet swells and shrinks more. Paint up to the joint, not over the silicone.
A small gap around a frame only grows. As old mastic keeps shrinking, the gap widens, and heat escapes around the frame. A new joint closes it up.
Can I do it myself?
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
If you’ve already had a go yourself, that is fine. We cut it out and start again, so tell us about it when you ask for a quote.