Slough · England
Sand mastic for sash & case windows in George Green, Slough
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for George Green, backed by a 12-month guarantee. Ask us for a quote.
- Silicone on a period window that looks wrong
- Mastic round period door frames that has failed
- Tired mastic found when preparing windows for paint
Sand mastic in George Green, done properly
Sand mastic suits most period window surrounds. Newer frames usually get a flexible sealant instead and we will explain which is best for yours. If you have mastic dropping out of the joint and open joints round the window box, we can put it right, whatever the surface.
Homes in small places like George 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.
Every job is covered by a one-year guarantee, wherever you are in Slough.
- Place
- George Green (SL3)
- Region
- Slough
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
When it is not the sealant
It helps to know what we can’t do:
- Planning or listed building consent (your local planning authority decides)
- Rotten sashes, sills or window boxes (a joiner’s job)
- Cracked or broken glass
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly.
What we seal
- Timber door frames
- Sash and case windows
- Period & listed homes
- Tenement windows
- Stone surrounds
- Brick reveals
Looking after it afterwards
Looking after new joints is easy, and it makes a real difference:
- Look over the window mastic once a year
- Don’t paint over the new mastic
- Keep modern sealant off the mastic
- Clear gutters so water does not pour onto the windows
Leave the new mastic unpainted, which is the traditional advice. Ask us before any decorating around it.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber and timber that stays wet can rot.
Windows and doors in George Green
With historic houses such as Windsor Castle (about 3.3 miles south-west) nearby, there’s older building stock in the area around George Green 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. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For landlords with property near Langley station, cracked sand mastic around sash windows lets in the draughts tenants complain about. In the older streets around Parish Church of St Mary, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
George Green is about 2 miles east of Slough, in Slough. From the centre of George Green to the outskirts, sand mastic is available for homes and businesses alike. Across Slough, we cover 31 places, and George Green is one of them. You can also see our page for Reading, roughly 19 miles from George Green.
Every address in SL3 is covered for sand mastic, from the main roads to the quietest streets. That includes homes and businesses on Thorn Drive, August End and Blinco Lane. Neighbouring places we cover for sand mastic include Middlegreen (1 mile south), Wexham Court (1 mile north-west), Langley (1 mile south), Shreding Green (1 mile east) and Wexham Street (2 miles north-west). Within a short drive, we also cover Cippenham (4 miles west), Chalvey (3 miles south-west), Britwell (3 miles west), Burnham (4 miles west), Datchet (3 miles south) and Huntercombe (4 miles west).
Landmarks near George Green
Locally, jobs take us to homes and businesses close to Wexham School, The George Public House and Upton Court Grammar School. George Green’s nearest station is Langley station, about 1.2 miles south-east. A little further out are The Pavilions (3.7 miles north-east) and Museum of Eton Life (3.1 miles south-west). The countryside around George Green includes Stoke Common.
What happens on the day
Most of a good job is in the preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes anything from a few hours to a full day, depending on how many windows. Somewhere as small as George Green, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic is not too thick.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Preparing for the visit
- Plan for the work area to be out of bounds to pets and children
- On commercial sites, let us know about site rules
- Let us know about stairs, lifts or work at height
Get a quote
Getting a quote is simple: let us know the job and the location. Photos by email help us understand the job, and we will come back to you with a quote.
Read more
George Green: your questions answered
Is George Green in your area for sand mastic?
Yes, George Green is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or email us with a few details of the job.
Is George Green within the area you cover?
Yes. George Green is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
What information do you need?
The location, the problem and the rough size of the job. Photos by email help too.
Can I choose the sealant colour?
Most of the time, yes. We will tell you which colours the right product comes in and agree one before we start.
Is it OK to seal over old sealant?
No. New silicone will not bond to old silicone, and it traps any mould or water underneath. We remove it all first.
Are you ARBOMaster approved?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
What is sand mastic?
A traditional pointing material made from sand and a linseed-oil-based binder, used between timber frames and stone or brick.
Are you fully insured?
Yes. We are fully insured for domestic and commercial work.
Work for landlords, hotels and businesses
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
Why deal with it now?
Not every filler suits an old window surround. Sand mastic matches what was there, which can matter on listed and conservation-area homes. Older cottages and farmhouses around George Green can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, along with when we can work on site. Call for a quick quote and we’ll go through it with you.
Why choose Mr Mastic in George Green
- ARBOMaster approved applicator
- Old sealant always removed completely
- Over 20 years’ experience
- Neat joints and a tidy finish
See what affects the cost and our reviews.
Also near George Green
What else we do in George Green
What we are called out for in George Green
Scraping and sanding before painting can loosen old mastic. It’s often found when windows are being prepared for paint.
Common reasons people contact us include:
- Draughts and rain around sash boxes
- Failed mastic on an exposed elevation
- Tired mastic found when preparing windows for paint
- Silicone on a period window that looks wrong
Managing a site like Wexham Court Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
What your quote should include
- Who turns up on the day
- What happens if they find a problem under the old sealant
- How the joint is cleaned and prepared
- Which sealant they’ll use, and why
How we quote for sand mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- How easy the joints are to reach
- The number of rooms or windows
- The old material and how stubborn it is
- The size of the job
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
What to tell us for a quote
Photos help, but a description is a good start. Try to tell us:
- Where the property is
- The rough size of the job
- If it’s domestic, commercial or a hotel
- Access, such as stairs, a lift or height
For a quick quote, get us on the phone, or email us if that is easier. Tell us about the joints that need doing and we will explain what’s involved and send you a clear quote.