Oxfordshire · England
Sand mastic for sash & case windows in Sprig's Alley, Oxfordshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Sprig's Alley and across Oxfordshire. Fully insured, ARBOMaster approved and guaranteed for a year.
- Gaps where the frame meets the masonry
- Window mastic to renew ahead of painting
- Draughts and rain around sash boxes
About our sand mastic in Sprig's Alley
A silicone bead around a sash window can look out of place and doesn’t suit the building. Sand mastic gives a finish that matches the age of the house and we can swap the silicone for it. Typical jobs include silicone on a period window that looks wrong and gaps round a timber door in stone or brick, on brick reveals, tenement windows and sash and case windows.
Somewhere as small as Sprig's Alley, 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.
The work is covered for a year after we finish. If anything is not right with it, call 0345 464 0079 or email us.
- Location
- Sprig's Alley (OX39)
- Region
- Oxfordshire
- Cover
- One year on every job
- Quotes
- A clear price before we start
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Get any rot dealt with first
- Check with your local planning authority if your home is listed
- Ask us before painting near the mastic
- Go gently near the mastic when preparing windows
Make sure water drains away from the window surround. Water sitting against the mastic shortens its life.
Renewing mastic before redecorating saves doing it twice. Paint over cracked mastic only covers it up.
Common questions in Sprig's Alley
I let a flat near Saunderton station. Can you help?
Yes, we work for letting agents and landlords. You can phone 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before we start.
Do you cover Sprig's Alley for sand mastic?
Yes, Sprig's Alley is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or email us and tell us what needs doing.
Can you do several jobs on one visit?
Yes, we can. More than one area can be quoted together.
What is sand mastic?
It’s the traditional filler for the joint round timber windows and doors. It combines sand with a linseed-oil-based binder.
Will the old sealant be removed?
Yes, every time. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.
How do I get a quote for sand mastic in Sprig's Alley?
We don’t publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Do you do commercial work?
Yes. Commercial and hotel work is a large part of what we do. Working times can be discussed when we quote.
Is it messy?
No. The area is protected while we work and cleaned up afterwards.
When it is not the sealant
It helps to know what we cannot do:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Whether work needs listed building consent
- Sashes that rattle, stick or will not open
If in doubt, ring 0345 464 0079 or drop us an email and we will say what we think.
Surfaces we seal
- Tenement windows
- Sash and case windows
- Period & listed homes
- Timber door frames
- Stone surrounds
- Brick reveals
Windows and doors in Sprig's Alley
Historic houses like Adwell House (about 4.4 miles west) are a reminder that the area around Sprig's Alley has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Letting a property close to Saunderton station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about.
Sprig's Alley is about 6 miles south-east of Thame, in Oxfordshire. Wherever you are in the OX39 postcode area, our applicators can take on sand mastic. 443 places in Oxfordshire are on our list, large and small. Oxford is on our list too, about 15 miles from Sprig's Alley.
All of OX39 is covered for sand mastic. We cover properties on Sprigs Holly Lane and Sprigs Holly and the roads around them. If you are just outside Sprig's Alley, we cover Bennett End (1 mile south-east), Stokenchurch (1 mile south), Rout's Green (1 mile east), Radnage (2 miles south-east) and Waterend (2 miles south-east). Further out, we also cover Oxford (15 miles west), Thame (6 miles north-west), Henley-on-Thames (10 miles south), Benson (10 miles south-west), Headington Quarry (14 miles north-west) and Wallingford (12 miles south-west).
Around Sprig's Alley
In Sprig's Alley, that means homes and buildings near Sir Charles Napier Inn, among other places. The nearest railway station is Saunderton station, roughly 2.9 miles east. Other landmarks nearby include Thame Community Hospital (5.6 miles north-west). For a walk, there’s Oakley Hill nature reserve and Bald Hill.
Work for landlords, hotels and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
We also work for property managers and facilities teams. We can quote a run of properties together, and we’re fully insured.
DIY versus a professional finish
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
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.
Also near Sprig's Alley
What else we do in Sprig's Alley
How the visit works
Every visit runs the same way: we look at the joints together, protect the area around them, do the work and tidy away. It usually takes a few hours per window, depending on the condition of the joints. For a village or hamlet like Sprig's Alley, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We look at the surrounds with you and agree the joints to renew.
- 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.
How to prepare
- For indoor joints, keep the area dry beforehand if you can
- Tell us about any water getting in
- Tell us about access, such as stairs, a lift or high-level joints
How to get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. When it suits you, call 0345 464 0079 or drop us an email.
Advice
What happens if it’s left?
Filling over old, loose mastic does not last. Raking out and preparing the joint gives it a sound base so the new work lasts. Older cottages and farmhouses around Sprig's Alley can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Combining jobs into one visit is generally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
Why choose Mr Mastic in Sprig's Alley
- Rated 4.9 stars on Google
- 20+ years of sealant experience
- Homes, businesses and hotels
- Neat joints and a tidy finish
Read what affects the cost and what customers say.
Do you need sand mastic in Sprig's Alley?
Previous repairs in cement or silicone often trap water or crack away. They don’t suit the joint and we normally remove them.
Common reasons people contact us are:
- Gaps between timber frames and stone or brick
- Silicone on a period window that looks wrong
- Cement or filler used on old window joints that has cracked
- Mastic dropping out of the joint
Adwell House, about 4.4 miles west, is one of the historic houses in the wider area around Sprig's Alley.
What to look for in a quote
- Whether they’re fully insured
- What happens if they find a problem under the old sealant
- What the quote includes, VAT included or not
- What guarantee comes with the work