Oxfordshire · England
Sand mastic for sash & case windows in Bloxham, Oxfordshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Bloxham, backed by a 12-month guarantee. Ask us for a quote.
- Cement or filler used on old window joints that has cracked
- Gaps where the frame meets the masonry
- Crumbling sand mastic round a window
About our sand mastic in Bloxham
Our applicators renew the sand mastic around sash and case windows and doors set in stone or brick. The old mastic is raked out, and new mastic is applied and shaped by hand. We’re often asked to deal with old sand mastic that has cracked, crumbled or fallen out and cement or filler used on old window joints that has cracked, across sash and case windows, tenement windows and period & listed homes.
Many houses in smaller places like Bloxham have conservatories, garden rooms or patio doors. Their glazing joints and frame seals are as much a part of the job as the windows.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Place
- Bloxham (OX15)
- Region
- Oxfordshire
- Cover
- One year on every job
- Price
- A clear price before we start
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Leave it or put it right?
Silicone might seem the quicker option, but it can look wrong on a period surround. Sand mastic is the traditional material and finishes neatly against the masonry. Around Bloxham, water from a failed joint in an older home can soak into timber and plaster, which is far harder to put right than the sealant itself.
The cost depends on the amount of work, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before we start, so you know where you stand.
Why us?
- We never seal over old sealant
- We leave the area clean and tidy
- Domestic, commercial and hotel work
- Over 20 years’ experience
Read what affects the cost and our reviews.
What sand mastic looks like in Bloxham
Historic houses like Broughton Castle (about 1.7 miles north-west) are a reminder that the area around Bloxham has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For site and facilities teams at buildings such as Bloxham Church of England Primary School, its window and door frames need their mastic kept sound, just like a home’s. Letting a property close to Banbury station? Then older sash windows in a rental need their mastic kept sound to keep the weather out. For an older house near a landmark such as Church of St Mary, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Bloxham is about 3 miles south of Banbury, in Oxfordshire. Every kind of property in Bloxham is covered for sand mastic. Every job comes with our one-year guarantee. Bloxham is one of 443 places in Oxfordshire where we work. You can also see our page for Oxford, roughly 19 miles from Bloxham.
Jobs for sand mastic in OX15 is quoted and booked the same way as anywhere else. Local streets include High Street, Merrivale's Lane and Unicorn Street, all of which we cover. Neighbouring places we cover for sand mastic include Milton (1 mile east), Broughton (2 miles north), North Newington (3 miles north) and Bodicote (3 miles north-east). Within a short drive, we also cover Banbury (3 miles north), Bicester (12 miles south-east), Kidlington (14 miles south), Bure Park (12 miles south-east), Chipping Norton (9 miles south-west) and Neithrop (3 miles north).
Landmarks near Bloxham
Locally, jobs take us to homes and businesses close to The Warriner School and Hawk & Partridge pub and the streets around them. Bloxham’s nearest station is Banbury station, roughly 3.5 miles north-east of the centre. Other landmarks nearby include Bloxham Village Museum (under half a mile south-west) and Horton General Hospital (2.9 miles north-east). Open spaces near Bloxham include Crouch Hill and Woodford Bottom and Lamb's Pool.
Bloxham: your questions answered
Do you cover Bloxham for sand mastic?
Yes, Bloxham is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we’ll send you a clear quote.
Is Bloxham within the area you cover?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can you work on commercial sites?
Yes. We can plan bigger jobs in stages.
What sealant do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We explain the product when we quote.
Can I add another job to the visit?
Yes, and it often makes sense. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
Is it OK to seal over old sealant?
No, it will not last. It can look neat for a few weeks, but the new layer lifts away from the old one. The old sealant has to come out completely.
What should I tell you?
Just the basics: where it is, what you’ve noticed and how we reach it. Then phone 0345 464 0079 or email us.
Is the work guaranteed?
Our 12-month guarantee covers every job.
Work for landlords, hotels and businesses
Letting agents often deal with us directly. Tell us the address, the job and how access works and we will quote.
We work for landlords and agents as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.
What affects the cost of sand mastic
Call for a quick quote. What matters most is:
- The number of rooms or windows
- The size of the job
- Whether the work is at height
- How much old sealant there is and how hard it is to remove
No two jobs are quite the same, 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, and we’ll explain the quote if you ask.
Helping us quote
There’s no need for technical detail. Just tell us:
- Access, such as stairs, a lift or height
- The problem you’ve noticed
- If someone has resealed it before
- The rough size of the job
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or send us an email.
How to look after the new joints
Joint life depends on how it’s used and looked after. We suggest:
- Ask a joiner to look at soft timber first
- Ask us before painting near the mastic
- Check the mastic when you check the paintwork
- Keep modern sealant off the mastic
Do not run silicone over the new mastic. If anything cracks, get it looked at before trying a quick fix.
An open joint round the box lets weather through. Left, the gap tends to get bigger as more mastic falls out.
Should I try it myself first?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
What we can’t put right
Some problems need a builder, plumber or other trade rather than us:
- Timber that has rotted
- Sash cords, weights and draught-proofing of the sashes
- Crumbling stone or brickwork round the window
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think.
Surfaces we seal
- Brick reveals
- Timber door frames
- Period & listed homes
- Stone surrounds
- Sash and case windows
- Tenement windows
How the visit works
There isn’t much for you to do on the day. Point us to the joints and we’ll get on with it. The job generally takes a few hours for a single window, longer for several. Parking around Bloxham is generally easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- Each surround is checked first.
- The joint is raked out and cleaned.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Getting ready for the visit
- Let us know about stairs, lifts or work at height
- Keep pets and children clear of the area while we work
- Mention any leaks or damp you’ve noticed
Get a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved and send you a clear quote.