Oxfordshire · England
Sand mastic for sash & case windows in Launton, Oxfordshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Launton, backed by a 12-month guarantee. Ask us for a quote.
- Mastic worn away on windows facing the weather
- Open joints round the window box
- Silicone on a period window that looks wrong
Sand mastic in Launton
We renew sand mastic around sash windows and doors set in stone or brick. Out comes the old, loose mastic, the joint is prepared and new mastic is shaped by hand. We work on timber door frames, brick reveals and period & listed homes, and common reasons people get in touch are silicone on a period window that looks wrong and cement or filler used on old window joints that has cracked.
Around Launton, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
Whatever the size of the job, it’s backed by our 12-month guarantee.
- Place
- Launton (OX26, OX25)
- Region
- Oxfordshire
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
What we do, step by step
Before we leave, we go over the finished joints with you and explain the cure time. The visit itself normally takes a few hours per window, depending on the condition of the joints, depending on how much there is to do. Somewhere like Launton needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Before we arrive
- Plan for the work area to be out of bounds to pets and children
- Tell us about any water getting in
- For business premises, tell us about site rules or sign-in
How to get a quote
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job, and we’ll come back to you with a quote.
Advice
Do you need sand mastic in Launton?
Over the years, sand mastic weathers. It dries out, cracks and loses its grip from the frame or the masonry.
Most people get in touch when they notice one of these:
- Failed mastic on an exposed elevation
- Cement or filler used on old window joints that has cracked
- Wind and rain getting in round a sash window
- Gaps where the frame meets the masonry
For landlords with property near Bicester North station, any sash windows need sound mastic to keep draughts and rain out.
What to look for in a quote
- What happens if the job turns out different
- How the joint is cleaned and prepared
- Is the old sealant removed completely?
- What product goes in the joint
Quotes for sand mastic in Launton
The price is agreed before any work begins. It’s based on:
- Whether the work is at height
- Whether old sealant or filler has to be cut out
- How much there is to do
- Mould in or behind the old joints
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all make a difference.
Helping us quote
To make quoting easier, please include:
- How we’d reach the joints
- Photos by email, if that is easy
- Whether it’s a home or a business
- The address or postcode of the job
Call for a quick quote, or email us if that’s easier. Describe what needs sealing and we will explain what’s involved before giving you a price.
Keeping the joints in good condition
How long the joints last depends on use and care. Here’s what we suggest:
- Go gently near the mastic when preparing windows
- Sort the mastic before the decorators arrive
- Avoid patching sand mastic with silicone
- Check with your local planning authority if your home is listed
Make sure water drains away from the window surround. Water sitting against the mastic shortens its life.
An open joint round the box lets weather through. Left, the gap tends to get bigger as more mastic falls out.
What happens if it’s left?
Before painting the windows, it pays to renew the mastic. Painting over failed mastic doesn’t seal it, and the new mastic is traditionally left unpainted. In a small place like Launton, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs, along with when we can work on site. Ask us for a quote and we will explain what it covers.
What you get with us
- Any old sealant cut out fully, not covered over
- Neat joints and a tidy finish
- 20+ years of sealant experience
- We’re fully insured
See our cost guide or customer reviews.
Nearby places to Launton
Other services in Launton
Launton homes and the weather
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.
Homes close to Church of St Mary include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame. Schools such as Launton Church of England Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Launton is about 2 miles east of Bicester, in Oxfordshire. We provide sand mastic to homes and businesses in Launton, as part of our work across Oxfordshire. Our Oxfordshire coverage runs to 443 places, and Launton is one of them. We also work in Oxford, about 11 miles from Launton.
Jobs for sand mastic in OX26 and OX25 works the same way as everywhere else we cover. If you need sand mastic at a property on Station Road, Skinner Road and Ancil Avenue or anywhere close by, we can help. Other places close to Launton include Ambrosden (2 miles south), Lower Arncott (3 miles south), Chesterton (3 miles west), Upper Arncott (3 miles south) and Wendlebury (3 miles south-west). Within a short drive, we also cover Oxford (11 miles south-west), Banbury (15 miles north-west), Thame (12 miles south-east), Kidlington (9 miles south-west), Headington Quarry (10 miles south) and St John Street area (12 miles south-west).
Local landmarks in Launton
Locally, jobs take us to homes and businesses close to Cooper School and The Bull Inn, among other places. The nearest railway station is Bicester North station, about 1.4 miles west. Well-known places in the area include Bicester Village (1.7 miles west) and Bicester Community Hospital (1.7 miles west). For a walk, there’s Graven Hill and Upper Ray Meadows.
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Cracked or broken glass
- Timber that has rotted
- Sashes that rattle, stick or won’t open
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly.
Where we work in Launton
- Brick reveals
- Timber door frames
- Sash and case windows
- Tenement windows
- Stone surrounds
- Period & listed homes
Common questions in Launton
Do you cover Launton for sand mastic?
Yes, Launton is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or drop us an email and let us know what needs doing, and we will give you a clear price.
Is Launton within the area you cover?
Yes. Launton is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
What should I tell you?
Just the basics: the address or postcode, what’s wrong and any access issues. After that, simply call 0345 464 0079 or send us an email.
Do you have insurance?
Yes. We’re fully insured, and we can confirm the details when we quote.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We explain the product when we quote.
Where are you based?
Our base is Crawley. We work across South East England, London and Scotland.
Can you do several jobs on one visit?
Yes. Just list everything you need and we will quote it together.
Does someone need to be in?
We need access to the joints, so we will agree that with you when we book. For inside work, that normally means someone being in.