Oxfordshire · England
Sutton-under-Brailes Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Sutton-under-Brailes and across Oxfordshire. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- A silicone bead on a sash window that spoils the look
- Failed mastic on an exposed elevation
- Draughty sash windows at the surround
Sand mastic for homes and businesses in Sutton-under-Brailes
Sand mastic suits most period window surrounds. On modern frames we’d normally use a flexible sealant and we’ll explain which is best for yours. If you’re dealing with weathered mastic on the most exposed windows and old sand mastic that has cracked, crumbled or fallen out, we can help, whatever the surface.
Outdoor sealant needs dry, clean surfaces, so work on frames around Sutton-under-Brailes is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
A 12-month guarantee comes as standard, so you are not left on your own once the job is done.
- Location
- Sutton-under-Brailes (OX15)
- Wider area
- Oxfordshire
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
The process
All our tools and materials come with us in the van, so you don’t need to buy or prepare anything. After a quick look at the joints together, the area is protected and the work begins. Most jobs take anything from a few hours to a full day, depending on how many windows. Somewhere like Sutton-under-Brailes needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. 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.
- Large voids are packed out first, so the mastic is not too thick.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- We dress the surface so it sits neatly against the masonry.
Before we arrive
- Mention any leaks or damp you’ve noticed
- Mention any tricky access
- On commercial sites, let us know about site rules
How to get a quote
We quote each job on its own, so the first step is telling us about yours. Simply call 0345 464 0079 or drop us an email and describe the job, and pictures are welcome.
Read more
Landlord and commercial work in Sutton-under-Brailes
If you manage several properties in or around Sutton-under-Brailes, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
Can I do it myself?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Towns and villages near Sutton-under-Brailes
Also in Sutton-under-Brailes
How to look after the new joints
After the cure time, these simple habits help:
- Inspect the joints round the windows every year or so
- Ask us before painting near the mastic
- Clear gutters so water doesn’t pour onto the windows
- Avoid patching sand mastic with silicone
Check the mastic when you check the paintwork. Catching cracks early keeps repairs small.
Renewing mastic before redecorating saves doing it twice. Paint over cracked mastic only covers it up.
Common problems we fix in Sutton-under-Brailes
Decorating can disturb tired mastic. It’s often found when windows are being prepared for paint, which is a good time to renew it.
Most people get in touch after spotting one of these:
- Tired mastic found when preparing windows for paint
- Patchy fillers round a sash window
- Weathered mastic on the most exposed windows
- Open joints round the window box
If you live in an older home near St Thomas a Becket Church, the joint between an old wall and a newer frame is normally the first place rain gets in.
What to look for in a quote
- What guarantee comes with the work
- What preparation is included
- How much experience the applicator has
- How long to leave it before use
Leave it or put it right?
If you are redecorating, renew the mastic first. Paint over cracked mastic won’t stop the gaps, and the new mastic is traditionally left unpainted. Where a wall is exposed, as many are in small places like Sutton-under-Brailes, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
What it costs depends on the amount of work, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
What you get with us
- Any old sealant cut out fully, not covered over
- Full insurance on every job
- 20+ years of sealant experience
- Anti-fungal sanitary silicone in wet areas
Read what affects the cost and customer reviews.
When something else is needed
We’d rather tell you now than do work that won’t last, so here’s what sealant can’t put right:
- Damaged stone surrounds
- Planning or listed building consent (your local planning authority decides)
- Decayed frames that need repair
If in doubt, call 0345 464 0079 or send us an email and we will say what we think before booking.
Where we work in Sutton-under-Brailes
- Period & listed homes
- Tenement windows
- Stone surrounds
- Brick reveals
- Sash and case windows
- Timber door frames
FAQs for Sutton-under-Brailes
What guarantee comes with sand mastic in Sutton-under-Brailes?
Every job comes with our 12-month guarantee, wherever it is. We’re fully insured, and an ARBOMaster approved applicator.
Do you cover smaller places like Sutton-under-Brailes?
Yes. Sutton-under-Brailes is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and you will get one quote.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint.
Can I do it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Do you have insurance?
Yes. We’re fully insured, and we can confirm the details when we quote.
Do you do commercial work?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. We can talk about working times when we quote.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. Our applicators cover Sutton-under-Brailes.
Frames and glazing around Sutton-under-Brailes
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.
In and around Sutton-under-Brailes, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
Sutton-under-Brailes is about 9 miles west of Banbury, in Oxfordshire. Wherever you are in the OX15 postcode area, we can carry out sand mastic at your property. We cover 443 towns and villages across Oxfordshire, from the larger towns to small villages. There’s also a page for Oxford, about 24 miles away.
Our applicators cover all of the OX15 postcode area for sand mastic and the streets around it. We also cover the places around Sutton-under-Brailes: Lower Brailes (1 mile north-east) and Upper Brailes (2 miles north). Further out, we also cover Banbury (9 miles east), Chipping Norton (7 miles south), Neithrop (9 miles east), Grimsbury (10 miles east), Ruscote (9 miles east) and Bloxham (8 miles east).
What’s near Sutton-under-Brailes
We work in homes and buildings around Cherington Arms Public House. Other landmarks nearby include Wheelbarrow Castle (4.5 miles south-west) and Ellen Badger Hospital (3.4 miles north-west). Open spaces near Sutton-under-Brailes include Castle Hill and Woodford Bottom and Lamb's Pool.