Oxfordshire · England
Sand Mastic in Weston Otmoor
Sand mastic in Weston Otmoor from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Mastic worn away on windows facing the weather
- Old sand mastic that has cracked, crumbled or fallen out
- Cracked mastic round a front door frame
Frames and glazing around Weston Otmoor
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For landlords with property near Islip station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Weston Otmoor is about 4 miles south-west of Bicester, in Oxfordshire. Every kind of property in Weston Otmoor is covered for sand mastic, old or new, large or small. The work is guaranteed for a year. Our Oxfordshire coverage runs to 443 places, Weston Otmoor among them. Our Oxford page covers work nearby, about 8 miles away.
We work across OX25 and OX5 for sand mastic and the streets around it. Streets in the area include Church Road, Knowle Lane and Oxford Road. We also cover Weston-on-the-Green (1 mile west), Bletchingdon (3 miles west), Islip (3 miles south-west), Kirtlington (3 miles west) and Hampton Poyle (3 miles south-west). Within a short drive, we also cover Oxford (8 miles south), Banbury (15 miles north-west), Bicester (4 miles north-east), Abingdon-on-Thames (13 miles south), Witney (13 miles south-west) and Thame (13 miles south-east).
Landmarks near Weston Otmoor
The nearest railway station is Islip station, about 2.8 miles south-west of the centre. Nearby you’ll also find Bicester Community Hospital (3.2 miles north-east) and Bicester Avenue (2.6 miles north-east). The countryside around Weston Otmoor includes Graven Hill and Woodsides Meadow.
About our sand mastic in Weston Otmoor
A silicone bead around a sash window can look out of place and is not always the right material. Sand mastic is the traditional choice, and we can replace one with the other. If you have mastic dropping out of the joint and mastic that needs renewing before redecorating, we can put it right, on brick reveals, sash and case windows and tenement windows alike.
Somewhere as small as Weston Otmoor, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
Each job carries a 12-month guarantee, whatever its size.
- Place
- Weston Otmoor (OX25, OX5)
- Wider area
- Oxfordshire
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Looking after it afterwards
After the cure time, these simple habits help:
- Look over the window mastic once a year
- Plan mastic work ahead of painting
- Go gently near the mastic when preparing windows
- Do not run silicone over sand mastic
Keep paint scrapers and sanders off the mastic when redecorating. It can be damaged by heavy scraping.
Crumbling mastic lets rain into the joint. That water can reach the timber frame and the wall so early renewal protects both.
What affects the cost of sand mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- How much there is to do
- The old material and how stubborn it is
- Which sealant suits the joint
- Mould in or behind the old joints
What it costs depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before we start.
Helping us quote
Before you ask for a quote, have a think about:
- Whether it has been sealed before
- If it’s domestic, commercial or a hotel
- How we’d reach the joints
- Roughly how big the job is
Need a quote? Please phone 0345 464 0079 or send us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Questions from Weston Otmoor
Do you cover smaller places like Weston Otmoor?
Yes. Weston Otmoor 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.
Do you work for landlords with property near Islip station?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we’ll send you a clear quote.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
Are you fully insured?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Will you leave a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
Can you replace silicone on a period window with sand mastic?
Yes, it’s a common request. The old silicone has to come out completely so the mastic beds in well.
Can I add another job to the visit?
Of course. Combining jobs makes good use of the visit.
Also near Weston Otmoor
More services for Weston Otmoor
Do you need sand mastic in Weston Otmoor?
Some old mastic was never deep enough. A thin layer doesn’t hold well so we make sure the new mastic is the right thickness.
Signs it’s time to call us include:
- A silicone bead on a sash window that spoils the look
- Draughts and rain around sash boxes
- Weathered mastic on the most exposed windows
- Gaps where the frame meets the masonry
If you live in an older home near Church of St Mary, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Comparing quotes
- Whether all the old sealant comes out first
- What the cure time is
- Who does the work, and how experienced they are
- The length of the guarantee
Different surfaces, different methods
Period and listed homes
A traditional finish suits a period property.
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. The gap round it is pointed with sand mastic.
DIY sealant or a professional job?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
The process
At the end, we look at the finished work together and explain the cure time. The visit itself generally takes anything from a few hours to a full day, depending on how many windows, depending on how much there is to do. In a small place like Weston Otmoor, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
How to prepare
- Move anything stored near the joints
- Let us know about parking restrictions
- Where the joints are inside, avoid wetting them before we arrive
Get a quote
There’s no standard price list, because every job is different. Instead, we give you a clear quote for your job. To arrange one, ring 0345 464 0079 or drop us an email.
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Honest limits
We’d rather tell you now than do work that won’t last, so here’s what sealant cannot put right:
- Whether work needs listed building consent
- Decayed frames that need repair
- Sash cords, weights and draught-proofing of the sashes
If you are not sure, just call 0345 464 0079 or drop us an email and we will give you a straight answer.
Joints and surfaces we work on
- Tenement windows
- Stone surrounds
- Period & listed homes
- Timber door frames
- Brick reveals
- Sash and case windows