West Berkshire · England
Sand mastic for sash & case windows in Fair Oak, West Berkshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for householders, landlords and businesses in Fair Oak. Fully insured, ARBOMaster approved and guaranteed for a year.
- Cracked mastic round a front door frame
- Mastic dropping out of the joint
- Mastic worn away on windows facing the weather
Sand mastic in Fair Oak, done properly
A silicone bead around a sash window can look out of place and isn’t always the right material. Sand mastic is the traditional choice, and we can replace one with the other. Common call-outs are for draughty sash windows at the surround and silicone on a period window that looks wrong, on brick reveals, sash and case windows and stone surrounds.
Around Fair Oak, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
A 12-month guarantee comes as standard, so you’re not left on your own once the job is done.
- Where
- Fair Oak (RG19)
- Region
- West Berkshire
- Cover
- One year on every job
- Price
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly.
Common questions in Fair Oak
Can you do sand mastic in Fair Oak?
Yes. We work across London and the South East, and Fair Oak is part of that. You can phone 0345 464 0079 or send us an email and tell us what needs doing.
Do you work for landlords with property near Thatcham station?
Yes, landlords and agents are among the people we work for. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
How do I get a quote for sand mastic in Fair Oak?
Size, access and the old material all affect the cost. Ask us for a quote.
Do I need to be at home?
Access is agreed with you when the job is booked. Indoors, that normally means someone at home.
What guarantee comes with the work?
There’s a 12-month guarantee on every job, sand mastic included.
What do you need from me for a quote?
A short description and the location, with pictures by email if possible. If we need more, we’ll ask.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We will tell you what we are using and why.
Can you do several jobs on one visit?
Of course. Doing several areas at once is normally more efficient, so mention them when you ask for a quote.
Common problems we fix in Fair Oak
Age is the main cause. Even well-laid mastic needs renewing in time, depending on exposure and upkeep.
Most people get in touch after spotting one of these:
- Draughts and rain around sash boxes
- Crumbling sand mastic round a window
- Modern sealant on a period surround
- Mastic worn away on windows facing the weather
For site and facilities teams at buildings such as Ashford Hill Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Questions to ask before booking
- What the quote includes, VAT included or not
- Whether you can choose the colour
- Which sealant they’ll use, and why
- When the joint can take water or movement
Fair Oak homes and the weather
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.
In the older streets around Church of St Paul, the joint between an old wall and a newer frame is usually the first place rain gets in. For landlords with property near Thatcham station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Fair Oak is about 3 miles west of Tadley, in West Berkshire. From the centre of Fair Oak to the outskirts, we cover sand mastic for every kind of property. Across West Berkshire, we cover 155 places, Fair Oak among them. For nearby work, see our Reading page.
We cover every part of the RG19 postcode area for sand mastic. Neighbouring places we cover for sand mastic include Ashford Hill (1 mile north), Plastow Green (1 mile west), Wolverton (1 mile south), Goose Hill (1 mile north-west) and Hyde End (2 miles north). Within a short drive, we also cover Newbury (6 miles north-west), Thatcham (4 miles north-west), Burghfield Common (7 miles north-east), Speenhamland (7 miles north-west), Hungerford (14 miles west) and Spencers Wood (11 miles east).
Local landmarks in Fair Oak
Around Fair Oak, our work takes us to homes and buildings near The Hurst School. For rail, the closest station is Thatcham station, about 3.6 miles north-west. A little further out are Old Chapel Textile Centre (3.6 miles north-west) and West Berkshire Community Hospital (5.5 miles north-west). Green spaces nearby include Thatcham Reed Beds.
What affects the cost of sand mastic
You’ll get a clear quote before any work starts. It takes into account:
- Any mould that needs treating
- The number of rooms or windows
- Whether the work is at height
- The old material and how stubborn it is
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part.
What we need to know
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- How many joints, rooms or windows are involved
- What the problem is, such as mould, gaps, leaks or cracking
- The type of property
- Any access issues, like height or stairs
Every job is quoted individually, so start by telling us what you need. Simply ring 0345 464 0079 or send us an email and describe the job.
How to look after the new joints
No joint lasts for ever, but care makes a real difference. A few tips:
- Find out about consent before window work on a listed home
- Ask us before painting near the mastic
- Ask a joiner to look at soft timber first
- Plan mastic work ahead of painting
When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.
Gaps round a sash box let in draughts and rain. Left, the gap tends to get bigger as more mastic falls out.
Why act early in Fair Oak
An open joint round the frame lets weather in. Water can get to the frame and the masonry, so dealing with it now protects both. Older cottages and farmhouses around Fair Oak can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Combining jobs into one visit is normally more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
What you get with us
- Homes, businesses and hotels
- Arbo and Everbuild products
- We’re fully insured
- Any old sealant cut out fully, not covered over
Take a look at how sealant jobs are priced and what customers say.
Also near Fair Oak
Also in Fair Oak
Landlord and commercial work in Fair Oak
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Housing providers, facilities teams and property managers book us too in Fair Oak and across West Berkshire. We can quote a run of properties together, and we are fully insured for the work.
How it works
There is not much for you to do on the day. Point us to the joints and we’ll get on with it. The work itself takes a few hours per window, depending on the condition of the joints. Somewhere like Fair Oak needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We check the window surrounds and agree which joints need renewing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- We dress the surface so it sits neatly against the masonry.
Getting ready for the visit
- Mention if the joints have been sealed before
- Let us know about stairs, lifts or work at height
- Let us know about parking restrictions
Getting a quote
To get a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. You will have a clear quote before we start.