Reading · England
Green Park Window Mastic
Mastic around window and door frames, sills and patio doors for homes and businesses in Green Park and across Reading. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- White mastic on grey or black frames
- Whistling draughts around closed windows
- Cracked sealant at the sill ends
How we handle window mastic in Green Park
Every window and door frame has a gap around it, and mastic is what closes it. When it cracks, hardens or pulls away, draughts and rain get in. The old mastic is removed and the joint resealed with a flexible exterior sealant. If you have cracked or shrunken mastic around the frame and draughty joints inside around the window, we can help, whatever the surface.
Outdoor sealant needs dry, clean surfaces, so work on frames around Green Park is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
Our work is backed for twelve months.
- Place
- Green Park (RG2, RG30, RG7)
- Region
- Reading
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Landlord and commercial work in Green Park
For anyone letting property in or around Green Park, several properties can be quoted together. Send us the addresses and the work at each.
Housing providers, facilities teams and property managers book us too. Several sites can go on one quote, and we are fully insured.
Common problems we fix in Green Park
Every frame moves through the day. A plastic or aluminium frame lengthens in sunshine and shortens as it cools, while the masonry beside it stays put. A sealant that can’t keep up eventually tears.
Most people get in touch after spotting one of these:
- Cracked internal joints between frame and plaster
- Cold air getting in at the frame edge
- Mastic that has split away from the wall
- Mastic that is falling out in pieces
For landlords with property near Reading Green Park station, renewing tired window mastic between tenants heads off draught and damp complaints.
Comparing quotes
- What the quote includes, VAT included or not
- Whether all the old sealant comes out first
- When the joint can take water or movement
- How the surfaces are prepared before sealing
Honest limits
We’ll always be straight with you, so here’s what new sealant will not do:
- A frame that has rotted at the joint
- Condensation trapped between the panes
- A sash or casement that will not close properly
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think.
Where we work in Green Park
- Aluminium frames
- Composite doors
- Timber windows & doors
- uPVC windows
- Patio & French doors
- Window sills
Also near Green Park
More services for Green Park
DIY versus a professional finish
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
If you’re set on DIY, put the effort into 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.
What happens on the day
We keep the work tidy and contained to the joints we’re treating, so you can get on with your day. The job normally takes anything from an hour or two to a full day, depending on how many frames there are, and we explain the cure time before we leave. Somewhere as small as Green Park, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each frame is looked over and we agree which ones need resealing.
- The old mastic is cut out and scraped back to clean surfaces.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- We tool each bead neatly and check every joint is closed.
How to prepare
- Keep children and pets away from the work area
- Let us know if you’ve seen damp or leaks
- Mention any tricky access
How to get a quote
We do not publish a price list. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or drop us an email.
Advice
How we quote for window mastic
Call for a quick quote. The main things that affect it are:
- How easy the joints are to reach
- Whether there’s mould to deal with
- The product the joint needs
- Any working-time requirements on site
The cost depends on the amount of work, how much old material has to come out and access to the work. You will have a clear quote before any work starts, so you know where you stand.
What we need to know
To make quoting easier, let us know:
- Any access issues, like height or stairs
- What the problem is, such as mould, gaps, leaks or cracking
- Whether it has been sealed before
- The type of property
Want a quote for window mastic? Please call 0345 464 0079 or drop us an email and tell us about the job. We will explain what we’d do and send you a clear quote before we start.
Your questions about window mastic in Green Park
Will you come out to Green Park?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
I let a flat near Reading Green Park station. Can you help?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before work begins.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises. We can talk about working times when we quote.
Is it OK to seal over old sealant?
No. New silicone will not bond to old silicone, and anything trapped underneath, including mould and water, stays there. We remove it all first.
Will new mastic stop draughts?
Often, yes. The gap between frame and wall is a common source of draughts, and sealing the inside and outside joints closes that path.
Which products do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We will tell you what we’re using and why.
Do you remove the old sealant?
Yes, every time. New sealant won’t bond properly to old, so the joint is cleaned back first.
What do you need from me for a quote?
Let us know what needs doing and where, plus photos if you have them. If we need more, we will ask.
Frames and glazing around Green Park
With historic houses such as Mapledurham House (about 4.6 miles north-west) nearby, there’s older building stock in the area around Green Park 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. Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Managing a site like Whitley Park Primary and Nursery School? Then the mastic around its windows and doors needs looking after like any other building’s. If you live in an older home near St Paul's Church, the joint between an old wall and a newer frame is usually the first place rain gets in.
Green Park is about 2 miles south of Reading, in Reading. We carry out window mastic for homes and businesses in Green Park. Our Reading coverage runs to 34 places, and Green Park is one of them.
Postcode districts we cover here for window mastic: RG2, RG30 and RG7. Streets in the area include Sunapee Road, Flagstaff Road and Longwater Avenue. Nearby, we also carry out window mastic in Great Lea Common (1 mile south-east), Whitley (1 mile east), Whitley Wood (1 mile south-east), Coley Park (1 mile north) and Three Mile Cross (2 miles south-east). We also work in nearby towns such as Caversham (4 miles north), Norcot (3 miles north-west), Tilehurst Within (3 miles north-west), Arborfield Garrison (5 miles south-east), Caversham Heights (4 miles north) and Sonning Common (6 miles north).
Near you in Green Park
In Green Park, that means homes and buildings near John Madejski Academy, among other places. For rail, the closest station is Reading Green Park station, roughly 0.5 miles west of the centre. Other landmarks nearby include The Oracle (2.2 miles north) and Beaumys Castle (3.4 miles south). For a walk, there’s Sonning Hill and Longwater.
Why act early in Green Park
A cracked joint around a frame lets rain into the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. Resealing now is a small job by comparison. Around Green Park, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference.
Why choose Mr Mastic in Green Park
- Approved under the ARBOMaster scheme
- Over 20 years’ experience
- One-year guarantee on every job
- A choice of colours where the product allows
Take a look at how sealant jobs are priced and customer reviews.