Oxfordshire · England
Nuneham Courtenay Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Nuneham Courtenay, with a one-year guarantee on every job. Call for a quick quote.
- Silicone on a period window that looks wrong
- Crumbling sand mastic round a window
- Wind and rain getting in round a sash window
How we handle sand mastic in Nuneham Courtenay
Sand mastic skins over fairly quickly but full hardening takes longer. Traditionally, sand mastic is left unpainted, so ask us before you decorate. We work on stone surrounds, brick reveals and sash and case windows, and people most often call us about crumbling sand mastic round a window and wind and rain getting in round a sash window.
Around Nuneham Courtenay, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
You get a one-year guarantee, the same in Nuneham Courtenay as everywhere else we work.
- Location
- Nuneham Courtenay (OX44)
- Wider area
- Oxfordshire
- Guarantee
- 12 months on all our work
- Price
- A clear price before we start
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Nuneham Courtenay homes and the weather
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. With historic houses such as Clifton Hampden Manor (about 2.3 miles south) nearby, there’s older building stock in the area around Nuneham Courtenay 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.
For landlords with property near Radley station, older sash windows in a rental need their mastic kept sound to keep the weather out. For site and facilities teams at buildings such as Marsh Baldon Church of England Controlled School, larger buildings have plenty of frames, and the mastic around each one ages.
Nuneham Courtenay is about 4 miles east of Abingdon-on-Thames, in Oxfordshire. From the centre of Nuneham Courtenay to the outskirts, we cover sand mastic for every kind of property. Nuneham Courtenay is one of 443 towns and villages in Oxfordshire we cover.
We cover every part of the OX44 postcode area for sand mastic and the streets around it. We also cover Radley (2 miles west), Clifton Hampden (2 miles south), Long Wittenham (3 miles south), Abingdon-on-Thames (4 miles west) and Culham (4 miles south-west). Larger places within reach include Oxford (4 miles north), Didcot (6 miles south), Bicester (15 miles north), Witney (14 miles north-west), Thame (11 miles east) and Wantage (12 miles south-west).
What’s near Nuneham Courtenay
In Nuneham Courtenay, that means homes and buildings near The Oxford Academy, among other places. The closest station to Nuneham Courtenay is Radley station, roughly 1.7 miles west. Nearby you’ll also find FitzHarris Castle (3.7 miles west) and Littlemore Hospital (2.3 miles north-west). Open spaces near Nuneham Courtenay include Shotover and Wells Farm.
Landlord and commercial work in Nuneham Courtenay
Housing providers, facilities teams and property managers book us too. Several sites can be quoted together, and we’re fully insured for the work.
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
What happens if it’s left?
If you are redecorating, renew the mastic first. Painting over failed mastic does not seal it and traditional guidance is to leave the new mastic unpainted. Around Nuneham Courtenay, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why book with us
- Tidy, careful work
- ARBOMaster approved applicator
- Rated 4.9 stars on Google
- We’re fully insured
Take a look at what affects the cost or customer reviews.
How we quote for sand mastic
We quote each job individually. These are the things that affect it:
- The number of rooms or windows
- How easy the joints are to reach
- How much there is to do
- Any mould that needs treating
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part.
What to tell us for a quote
Photos by email are helpful but not essential. Please mention:
- Any previous sealing or DIY work
- If it’s domestic, commercial or a hotel
- A few pictures by email, if you can
- Roughly how big the job is
We quote each job on its own. Simply call 0345 464 0079 or email us and describe the job.
How it works
Most of a good job is in the preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. In total, it usually takes anything from a few hours to a full day, depending on how many windows. In a small place like Nuneham Courtenay, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- 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.
- We dress the finish so it sits neatly against the masonry.
Before we arrive
- Mention any sign-in or site rules at work premises
- Keep pets and children clear of the area while we work
- Where the joints are inside, avoid wetting them before we arrive
How to get a quote
If you are in Nuneham Courtenay and need sand mastic, call 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you’ll get a clear quote before work begins.
Related advice
Towns and villages near Nuneham Courtenay
Also in Nuneham Courtenay
Common questions in Nuneham Courtenay
Do you work for landlords with property near Radley station?
Yes, landlords and agents are among the people we work for. You can phone 0345 464 0079 or email us with the details for a clear quote.
Is Nuneham Courtenay in your area for sand mastic?
Yes. Our work covers London and the South East, and Nuneham Courtenay is part of that. Just ring 0345 464 0079 or email us with a few details of the job.
Can I add another job to the visit?
Yes. More than one area can go on one quote.
Which is right for my windows, sand mastic or modern sealant?
That depends on your windows. On many period windows, sand mastic looks right and suits the building, while modern frames normally get a flexible sealant.
How long does the job take?
That depends on the amount of work, but as a guide it takes a few hours for a single window, longer for several. We will give you a better idea when we quote.
Are you fully insured?
Yes. We’re fully insured for domestic and commercial work.
Can I choose the sealant colour?
We will suggest a colour to suit the surroundings. The product needed can limit the range.
Can old silicone round a sash window be swapped for sand mastic?
In most cases. The silicone is cut out and the joint cleaned, then point it with sand mastic.
How to look after the new joints
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Look over the window mastic once a year
- Make sure water runs off the sill
- Check with your local planning authority if your home is listed
- Keep modern sealant off the mastic
Leave the new mastic alone while it firms up. It forms a skin fairly soon, but takes longer to harden fully.
It’s best to renew mastic before painting the windows. Paint over cracked mastic only covers it up.
What we’re called out for in Nuneham Courtenay
Shallow joints are a common cause. Mastic that is too thin cracks and drops out, which is why we pack deep voids first and get the depth right.
Any of these means the joints need attention:
- Mastic worn away on windows facing the weather
- Mastic round period door frames that has failed
- Tired mastic found when preparing windows for paint
- Cement or filler used on old window joints that has cracked
Homes close to Church of St Peter include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Comparing quotes
- What preparation is included
- Whether all the old sealant comes out first
- What guarantee comes with the work
- Whether VAT is included
Different surfaces, different methods
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We can do one window or several.
Stone surrounds
Stone surrounds suit sand mastic well. The finish blends with the masonry.