Oxfordshire · England
Abingdon-on-Thames Sand Mastic
We cover Abingdon-on-Thames for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Cement or filler used on old window joints that has cracked
- A silicone bead on a sash window that spoils the look
- Mastic round period door frames that has failed
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Sand mastic in Abingdon-on-Thames
If your home is listed or in a conservation area, check with your local planning authority whether consent is needed for work to windows. Like-for-like sand mastic is often the preferred finish. If you’re dealing with mastic that needs renewing before redecorating and mastic round period door frames that has failed, we can put it right, whatever the surface.
In a town like Abingdon-on-Thames, the windows on the most exposed side of a house take the brunt of the rain, so the mastic there tends to fail first. It’s worth looking at every frame, not just the one that leaks.
We stand behind the work with a 12-month guarantee, so you are covered after we have gone.
- Location
- Abingdon-on-Thames (OX14)
- Wider area
- Oxfordshire
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Work for landlords, hotels and businesses
We also work for property managers and facilities teams. Several sites can go on one quote, and we’re fully insured for the work.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
FAQs for Abingdon-on-Thames
I let a flat near Radley station. Can you help?
Yes, we work for landlords and agents. You can ring 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before we start.
Can you do sand mastic in Abingdon-on-Thames?
Yes. Our work covers London and the South East, and Abingdon-on-Thames is part of that. You can ring 0345 464 0079 or drop us an email and tell us what needs doing, and we will give you a clear price.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
What exactly is sand mastic?
It’s sand mixed with a linseed-oil-based binder for the joint between timber frames and masonry.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint.
Do you have insurance?
Yes. We are fully insured.
What does sand mastic cost?
Every job is different, so each one gets its own quote. To get one, ring 0345 464 0079 or send us an email and tell us what needs doing and where.
Can you match the sealant colour?
Yes. Sealants come in white, clear, grey and other colours, and we agree the colour with you before we start.
How we quote for sand mastic
We quote each job individually. This is what makes a difference:
- Whether there’s mould to deal with
- Access and height
- Working hours on commercial sites
- The type of sealant required
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all play a part.
Helping us quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Pictures of the joints, sent by email
- If it’s domestic, commercial or a hotel
- Where the job is, and your postcode
- Any access issues, like height or stairs
Want a quote for sand mastic? Please call 0345 464 0079 or drop us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.
Places near Abingdon-on-Thames
Other services in Abingdon-on-Thames
Sand mastic in Abingdon-on-Thames: 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 Clifton Hampden Manor (about 3.5 miles south-east) are a reminder that the area around Abingdon-on-Thames has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
In the older streets around Christ Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. For landlords with property near Radley station, any sash windows need sound mastic to keep draughts and rain out. Schools such as St Nicolas Church of England Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Abingdon-on-Thames is about 6 miles south-west of Oxford, in Oxfordshire. Our applicators cover sand mastic for homeowners, landlords and businesses in Abingdon-on-Thames and nearby, as part of our work across Oxfordshire. Our area takes in 443 places across Oxfordshire, from the larger towns to small villages. We also work in Oxford, about 6 miles from Abingdon-on-Thames.
Our applicators cover all of OX14 for sand mastic and the streets around it. Local streets include Marsh Court, Boxhill Walk and Heron's Walk. Being close to the A34 and A415, Abingdon-on-Thames is simple for us to get to. Other places close to Abingdon-on-Thames include Caldecott (1 mile south), Radley (2 miles north-east), Culham (2 miles south-east), Sutton Courtenay (3 miles south) and Appleford-on-Thames (3 miles south-east). We also work in nearby towns such as Oxford (6 miles north-east), Didcot (5 miles south), Witney (12 miles north-west), Carterton (15 miles north-west), Thame (14 miles east) and Wantage (8 miles south-west). Abingdon-on-Thames is among the bigger towns we cover in Oxfordshire.
What’s near Abingdon-on-Thames
In Abingdon-on-Thames, that means homes and buildings near John Mason School, The Spread Eagle Public House and School of St Helen and St Katharine, among other places. The closest station to Abingdon-on-Thames is Radley station, roughly 1.9 miles east of the centre. Well-known places in the area include Pendon Museum (3.9 miles south-east) and Abingdon Community Hospital (1 mile south-west). Green spaces nearby include Dry Sandford Pit and Harcourt Hill.
What sealant work can’t fix
It helps to know what we cannot do:
- Masonry that needs repairing
- Whether work needs listed building consent
- Cracked or broken glass
Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly.
Joints and surfaces we work on
- Timber door frames
- Sash and case windows
- Tenement windows
- Brick reveals
- Stone surrounds
- Period & listed homes
Aftercare tips
To keep the joints looking good and working properly:
- Leave the new mastic unpainted
- Check the mastic when you check the paintwork
- Take care around the mastic when scraping paint
- Keep modern sealant off the mastic
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.
Why it’s worth doing now in Abingdon-on-Thames
New mastic over crumbling mastic won’t hold. We remove the loose material first so the new mastic stays put. In Abingdon-on-Thames, as anywhere, most leaks start as a small gap in a joint, and early is when they’re cheapest and quickest to sort.
Combining jobs into one visit is generally more efficient than separate visits. We will send you a clear quote for the lot.
Why choose Mr Mastic in Abingdon-on-Thames
- An ARBOMaster approved applicator
- Sanitary silicone with an anti-fungal additive in wet areas
- Rated 4.9 stars on Google
- Domestic, commercial and hotel work
The process
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The job generally takes a few hours per window, depending on the condition of the joints from start to finish. For a job in Abingdon-on-Thames, we need access to where the work is and somewhere nearby to park. For outside work, let us know about side access, gates and any upper-floor joints.
- 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 isn’t too thick.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Preparing for the visit
- Mention any parking rules near the property
- Let us know if you’ve seen damp or leaks
- Keep children and pets away from the work area
Getting a quote
Every job is quoted individually. Just ring 0345 464 0079 or email us with the details.