Reading · England
Trash Green Window Mastic
Mastic around window and door frames, sills and patio doors for Trash Green, backed by a one-year guarantee. Ask us for a quote.
- Cold air getting in at the frame edge
- A bead that doesn’t match the frame
- Mastic that has split away from the wall
Keeping the joints in good condition
Looking after new joints is easy:
- Walk round the house once a year and look at the joints
- Clean frames with a soft cloth and soapy water
- Avoid blasting the frames with a pressure washer
- Keep solvents and bleach off the sealant
Silicone can’t normally be painted, so if you’re planning to paint the frames or walls, tell us beforehand. We can use a paintable sealant where that matters.
Signs to watch for: split or missing mastic, gaps, damp patches inside or black mould on the reveal. Any of these is worth a call.
About our window mastic in Trash Green
From a single sill to a whole house of windows, you will get a clear quote before we start. To get one, phone 0345 464 0079 or send us an email with the number of frames and any access details for window mastic in Trash Green. We work on uPVC windows, window sills and aluminium frames, and the jobs we see most are untidy mastic left by window fitters and draughts coming in around windows and doors.
Homes in small places like Trash Green 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.
Big or small, it’s backed by our 12-month guarantee.
- Where
- Trash Green (RG30)
- Wider area
- Reading
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Questions from Trash Green
Is Trash Green within the area you cover?
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.
Is Trash Green in your area for window mastic?
Yes, Trash Green is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or send us an email with a few details of the job.
When is the sealant fully cured?
Most sealants are touch-dry well before they’re fully cured. We’ll tell you how long to leave the joint before we leave.
Can you work on commercial sites?
Yes. We’ve worked for hotels, offices and other businesses, and we are fully insured.
What do you need from me for a quote?
The location, the problem and the rough size of the job. Photos by email help too.
Is it OK to seal over old sealant?
No. New silicone won’t bond to old silicone, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
Do I have to be there?
For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you do not need to watch us work.
Will resealing my frames help with draughts?
Yes, if the air is getting in around the frame. If it’s through the window’s own seals or a hinge, that’s a different fix, and we will say so.
Window mastic in Trash Green: local notes
With historic houses such as Mapledurham House (about 4.7 miles north) nearby, there’s older building stock in the area around Trash Green as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. 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.
Schools such as Burghfield St Mary's C.E. Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. If you let a flat or house near Theale station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Trash Green is about 4 miles south-west of Reading, in Reading. If you need window mastic in Trash Green, please call 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover Reading. We cover 34 towns and villages across Reading, large and small.
Postcode districts we cover here for window mastic: RG30. Local streets include Bennett's Hill and Theale Road, and we cover them all. Neighbouring places we cover for window mastic include Burghfield (1 mile south), Sheffield Bottom (1 mile north-west), Burghfield Hill (1 mile south), Sulhamstead Bannister Upper End (1 mile west) and Sulhamstead Abbots (1 mile south-west). We also work in nearby towns such as Caversham (6 miles north-east), Norcot (3 miles north-east), West Reading (4 miles north-east), Tilehurst Within (3 miles north), Shinfield (5 miles east) and Arborfield Garrison (7 miles east).
Around Trash Green
We work in homes and buildings around Fox & Hounds pub and The Willink School and the streets around them. For rail, the closest station is Theale station, about 1.4 miles north-west. Nearby you will also find Thames Valley Police Museum (1 mile west) and Battle Hospital (3.8 miles north-east). Green spaces nearby include Hosehill Lake and Fobney Island Wetland Reserve.
When it isn’t the sealant
We will always be straight with you, so here’s what new sealant won’t do:
- Soft or decayed wood in the frame
- Penetrating damp from a failed cavity tray or render
- A door that needs adjusting, rehanging or new seals
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly before booking.
Joints and surfaces we work on
- Window sills
- Patio & French doors
- uPVC windows
- Aluminium frames
- Timber windows & doors
- Composite doors
Places near Trash Green
Other services in Trash Green
Surface by surface
Window sills
The end joints of a sill tend to fail before the rest. A tight seal at each end keeps rain out of the wall.
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A tidy bead in anthracite grey, black or a matching colour suits the frame.
Should I try it myself first?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
Do you need window mastic in Trash Green?
On timber frames, paint and putty build up around the joint. Mastic painted over many times cracks with the paint, and the wood moves with damp as well as heat.
The most common problems we see are:
- Sealant in the wrong colour for the frame
- Cracked internal joints between frame and plaster
- Mastic that has split away from the wall
- Rain getting in at the frame or under the sill
In the older streets around Church of St Mary the Virgin, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Questions to ask before you book
- What guarantee comes with the work
- What the cure time is
- What the quote includes, VAT included or not
- How the joint is cleaned and prepared
What happens on the day
There’s no need to move everything out before we come, just the space around the work. Everything nearby is protected, and the job takes anything from an hour or two to a full day, depending on how many frames there are for a typical job. In a small place like Trash Green, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by checking each window and door with you.
- Next the failed sealant is cut away and the joint cleaned.
- Deep gaps are filled with backing rod to set the depth.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- Finally we tidy up and check each joint.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- Tell us about any previous sealing or DIY attempts
- Mention any tricky access
How to get a quote
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we will talk you through the work before giving you a price.
Related advice
What affects the quote in Trash Green
Every job gets its own quote. These are the things that affect it:
- Mould in or behind the old joints
- Working hours on commercial sites
- The type of sealant required
- How many rooms, windows or areas are involved
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
What to tell us for a quote
Photos help, but a description is a good start. Try to tell us:
- Whether it has been sealed before
- Roughly how big the job is
- What’s wrong with the joints now
- How we’d reach the joints
Every job is quoted individually. Just phone 0345 464 0079 or send us an email with the details, and pictures are welcome.