Oxfordshire · England
Sand mastic for sash & case windows in North Stoke, Oxfordshire
Window and door surrounds in North Stoke need attention? We remove the old material, prepare the joints and seal them properly.
- A silicone bead on a sash window that spoils the look
- Old sand mastic that has cracked, crumbled or fallen out
- Draughty sash windows at the surround
Sand mastic in North Stoke
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s a mix of sand and a linseed-oil-based binder, applied by hand. On older homes, it suits the building far better than silicone. If you are dealing with mastic that needs renewing before redecorating and crumbling sand mastic round a window, we can put it right, whatever the surface.
Somewhere as small as North Stoke, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
We stand behind the work with a 12-month guarantee, so you’re not left on your own once the job is done.
- Where
- North Stoke (OX10)
- Region
- Oxfordshire
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Why it’s worth doing now in North Stoke
Cement-based fillers and modern sealants do not always suit a period surround. Sand mastic matches what was there, which can matter on listed and conservation-area homes. Older cottages and farmhouses around North Stoke can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
Why book with us
- More than 20 years in sealant work
- Trusted Arbo and Everbuild sealants
- A 12-month guarantee on all work
- Homes, businesses and hotels
Take a look at our cost guide and our reviews.
North Stoke: your questions answered
Is North Stoke within the area you cover?
Yes, North Stoke is covered. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Is North Stoke in your area for sand mastic?
Yes, North Stoke is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or drop us an email and let us know what needs doing.
Do you offer different sealant colours?
We help you choose a colour that suits. The product needed can limit the range.
Do the sealants smell?
Some sealants have a smell while they cure, but it fades. Opening a window helps.
Will you leave a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Can I add another job to the visit?
Yes, and it often makes sense. Doing several areas at once is normally more efficient.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do. We can talk about working times when we quote.
Can I paint the new mastic?
The usual advice is to leave sand mastic unpainted. If you’re redecorating the window, ask us first and we’ll talk you through it.
Also near North Stoke
More services for North Stoke
Work for landlords, hotels and businesses
Housing providers, facilities teams and property managers book us too. Several sites can be quoted together, and we’re fully insured for the work.
Letting agents often deal with us directly. Tell us the address, the job and how access works and we’ll give you a quote.
How the visit works
We keep the work tidy and contained to the area we are working on, so you can carry on as normal. Expect the work to take a few hours per window, depending on the condition of the joints. Somewhere like North Stoke 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.
- We rake out the old mastic and clean the joint.
- We pack any deep gaps so the mastic sits at the right depth.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The finish is dressed so it sits neatly against the stone or brick.
Preparing for the visit
- On commercial sites, let us know about site rules
- Let us know about stairs, lifts or work at height
- Tell us about any previous sealing or DIY attempts
Get a quote
To get a quote, phone 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before we start.
Related advice
Frames and glazing around North Stoke
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Brightwell Manor (about 3.5 miles north-west) nearby, there’s older building stock in the area around North Stoke as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
If you live in an older home near St Mary the Virgin, the joint between an old wall and a newer frame is generally the first place rain gets in. Letting a property close to Cholsey station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
North Stoke is about 6 miles south-east of Didcot, in Oxfordshire. From the centre of North Stoke to the outskirts, sand mastic is available for homes and businesses alike. North Stoke is one of 443 places in Oxfordshire we cover. There’s also a page for Reading, roughly 10 miles from North Stoke.
Jobs for sand mastic in OX10 works the same way as everywhere else we cover. You will find streets such as The Street, Cook Lane and Wallingford Road, and we cover them all. Nearby, we also carry out sand mastic in Winterbrook (1 mile north-west), Cholsey (1 mile west), Mongewell (1 mile north), Newnham Murren (2 miles north) and South Stoke (2 miles south-west). Within a short drive, we also cover Oxford (13 miles north), Didcot (6 miles north-west), Abingdon-on-Thames (10 miles north-west), Thame (14 miles north-east), Wantage (13 miles west) and Henley-on-Thames (10 miles east).
Around North Stoke
Locally, jobs take us to homes and businesses close to Kinecroft. For rail, the closest station is Cholsey station, about 1.7 miles west of the centre. Other landmarks nearby include Wallingford Castle (2.2 miles north). Open spaces near North Stoke include Wittenham Clumps and Cholsey Marsh.
What we can’t put right
We will not take on work that won’t last, so these are the limits:
- Cracked or broken glass
- Sashes that rattle, stick or won’t open
- Decisions on consent for listed homes
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly.
Where we work in North Stoke
- Timber door frames
- Stone surrounds
- Tenement windows
- Period & listed homes
- Sash and case windows
- Brick reveals
Looking after it afterwards
After the cure time, these simple habits help:
- Ask the planning authority about consent for listed or conservation-area homes
- Look over the window mastic once a year
- Leave the new mastic unpainted
- Take care around the mastic when scraping paint
Look at the mastic when you look over the windows. Catching cracks early keeps repairs small.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.
What we are called out for in North Stoke
Some old mastic was never deep enough. Mastic that is too thin cracks and drops out so we make sure the new mastic is the right thickness.
Any of these means the joints need attention:
- Cracked mastic round a front door frame
- Open joints round the window box
- Draughts and rain around sash boxes
- Failed mastic on an exposed elevation
For site and facilities teams at buildings such as Wallingford School, larger buildings have plenty of frames, and the mastic around each one ages.
Before you book anyone
- What guarantee comes with the work
- Who does the work, and how experienced they are
- How long to leave it before use
- Whether the sealant suits the joint
What affects the cost of sand mastic
There’s no set price list, because jobs vary so much. What we look at:
- Whether the work is at height
- How many areas need sealing
- Any mould that needs treating
- When we can work, for business premises
What it costs depends on the amount of work, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts, so you know where you stand.
What to tell us for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Whether it’s a home or a business
- If someone has resealed it before
- What the problem is, such as mould, gaps, leaks or cracking
- How we’d reach the joints
There’s no standard price list, because every job is different. Instead, we give you a clear price for your job. To get started, phone 0345 464 0079 or send us an email.