Reading · England
Sand mastic for sash & case windows in Trench Green, Reading
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Trench Green. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Patchy fillers round a sash window
- Draughty sash windows at the surround
- Tired mastic found when preparing windows for paint
What happens if it’s left?
Silicone might seem the quicker option, but on period stone or brick it often looks out of place. Sand mastic is the traditional material and finishes neatly against the masonry. In a small place like Trench Green, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote and we will talk you through it.
What you get with us
- Experience in homes, commercial sites and hotels
- Every job guaranteed for a year
- 20+ years of sealant experience
- Approved under the ARBOMaster scheme
Sand mastic in Trench Green, done properly
Sand mastic does not last for ever, leaving gaps round the window. We rake it out and renew it and tidies the surround. We’re often asked to deal with cracked mastic round a front door frame and gaps between timber frames and stone or brick, on timber door frames, period & listed homes and tenement windows.
Somewhere as small as Trench Green, older homes often have timber frames set in stone or brickwork. Older buildings like these don’t always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Location
- Trench Green (RG4)
- Wider area
- Reading
- Cover
- One year on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Sand mastic in Trench Green: local notes
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Mapledurham House (about 1.1 miles south-west) are a reminder that the area around Trench 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.
If you live in an older home near Church of St Margaret and Bardolf Aisle, the joint between an old wall and a newer frame is usually the first place rain gets in. Letting a property close to Tilehurst station? Then any sash windows need sound mastic to keep draughts and rain out.
Trench Green is about 2 miles north-west of Caversham, in Reading. Every kind of property in Trench Green is covered for sand mastic, old or new, large or small. The work is guaranteed for a year. Our Reading coverage runs to 34 places, Trench Green among them.
Jobs for sand mastic in RG4 is quoted and booked the same way as anywhere else. Nearby, we also carry out sand mastic in Chazey Heath (1 mile east), Mapledurham (1 mile south-west), Purley on Thames (2 miles south-west), Norcot (2 miles south) and Tilehurst (2 miles south). We also work in nearby towns such as West Reading (3 miles south), Shinfield (7 miles south-east), Arborfield Garrison (9 miles south-east), Horncastle (3 miles south), Whitley Wood (6 miles south-east) and Fords Farm (4 miles south).
Landmarks near Trench Green
Locally, jobs take us to homes and businesses close to Pack Horse Public House, among other places. Trench Green’s nearest station is Tilehurst station, about 1.7 miles south. A little further out are Royal Berkshire Regiment Museum (2.6 miles south) and Battle Hospital (2.6 miles south). Open spaces near Trench Green include Moor Copse Nature Reserve and Sonning Hill.
Places near Trench Green
Also in Trench Green
What affects the quote in Trench Green
Some jobs are bigger than they look, and some smaller. What affects the quote:
- The product the joint needs
- Any working-time requirements on site
- Whether the work is at height
- The number and length of the joints
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, along with when we can work on site. Call for a quick quote and we will explain what it covers.
Asking for a quote
To make quoting easier, let us know:
- The rough size of the job
- The address or postcode of the job
- Access, such as stairs, a lift or height
- A few pictures by email, if you can
We don’t publish a price list. Instead, we give you a clear quote for your job. To get started, phone 0345 464 0079 or send us an email.
Landlord and commercial work in Trench Green
If you manage several properties in or around Trench Green, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
Trench Green questions
Can you do sand mastic in Trench Green?
Yes. We work across London and the South East, and Trench Green is part of that. You can ring 0345 464 0079 or drop us an email and tell us what needs doing.
Do you cover smaller places like Trench Green?
Yes, Trench Green is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Do the sealants smell?
Sometimes, a little. It fades as the sealant cures.
Can you match the sealant colour?
Yes. Sealants come in white, clear, grey and other colours for many products, and we will agree it with you first.
What do you put in the joint?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Can new sealant go over the old?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Does someone need to be in?
It depends on the job. For work indoors, someone needs to let us in, and for outside work we will agree access with you when we book.
How long does the job take?
It depends on the size of the job, but as a guide it takes a few hours per window, depending on the condition of the joints. We will tell you when we quote.
What sealant work can’t fix
In fairness, there are a few things sealant won’t fix:
- Timber that has rotted
- Broken panes
- Planning or listed building consent (your local planning authority decides)
Not sure which it is? You can phone 0345 464 0079 or email us and we will tell you honestly before booking.
Joints and surfaces we work on
- Tenement windows
- Period & listed homes
- Timber door frames
- Brick reveals
- Stone surrounds
- Sash and case windows
What happens on the day
On the day, we look over the joints with you first. We protect the surfaces around the joints before we start. Most jobs take anything from a few hours to a full day, depending on how many windows. Somewhere like Trench Green needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
How to prepare
- Plan for the work area to be out of bounds to pets and children
- Clear the area around the work
- Tell us about access, such as stairs, a lift or high-level joints
Ask for a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved.
Related advice
Looking after it afterwards
Aftercare is simple, and it makes a real difference:
- Check the mastic when you check the paintwork
- Leave the new mastic unpainted
- Take care around the mastic when scraping paint
- Ask a joiner to look at soft timber first
Do not run silicone over the new mastic. If anything cracks, get it looked at rather than patching it.
Once mastic starts to crumble, rain gets in. It can soak into the frame and the surrounding masonry so early renewal protects both.
Can I do it myself?
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.