Oxfordshire · England
Sand mastic for sash & case windows in Combe, Oxfordshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Combe, with a one-year guarantee on every job. Ask us for a quote.
- Cement or filler used on old window joints that has cracked
- Cracked mastic round a front door frame
- Mastic dropping out of the joint
How it works
You don’t need to clear the whole room or building, just the space around the work. We protect the rest, and the work takes a few hours per window, depending on the condition of the joints for a typical job. In a small place like Combe, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by checking each surround and agreeing the joints to renew.
- We rake out the old mastic and clean the joint.
- We pack any deep gaps so the mastic sits at the right depth.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The mastic is finished to sit tidily against the stone or brick.
Getting ready for the visit
- On commercial sites, let us know about site rules
- Move anything stored near the joints
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
To get a quote, call 0345 464 0079 or send us an email with the location and a short description of the problem. You’ll have a clear quote before any work starts.
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Sand mastic in Combe, done properly
For a listed home or one in a conservation area, ask your local planning authority whether consent is needed for work to windows. Sand mastic is often favoured as a like-for-like material. If you have failed mastic on an exposed elevation and mastic dropping out of the joint, we can put it right, on timber door frames, sash and case windows and brick reveals alike.
Mastic can only go onto a dry, clean joint, so window work in Combe is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
Big or small, you get the same one-year guarantee.
- Where
- Combe (OX29)
- Region
- Oxfordshire
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
How we quote for sand mastic
The quote reflects the job in front of us. We take into account:
- Any working-time requirements on site
- How many rooms, windows or areas are involved
- The size of the job
- The product the joint needs
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re unsure, call 0345 464 0079 or email us for an honest opinion and a quote.
Helping us quote
Photos by email are helpful but not essential. Please mention:
- Where the property is
- If someone has resealed it before
- A few pictures by email, if you can
- What’s wrong with the joints now
Need a quote? Please call 0345 464 0079 or email us with a few details. We will explain what we’d do and give you a clear quote before any work starts.
Work for landlords, hotels and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Different surfaces, different methods
Tenement and terrace windows
Upper-floor windows need access planning. Tell us the height and we’ll confirm what’s needed.
Timber door frames
Door frames get knocked and soaked, so their mastic can fail sooner. It’s renewed by hand.
Your questions about sand mastic in Combe
I let a flat near Combe station. Can you help?
Yes, landlords and agents are among the people we work for. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we will give you a clear price.
Is Combe in your area for sand mastic?
Yes. Our work covers London and the South East, and Combe is part of that. Just phone 0345 464 0079 or send us an email with a few details of the job, and we will give you a clear quote.
Is it possible to take out silicone and use sand mastic instead?
Yes, it’s a common request. The old silicone has to come out completely so the mastic beds in well.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Can I do it myself?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Do you take out the old sealant first?
Yes. Sealing over the old bead is the commonest cause of early failure, so we never do it.
Do I have to be there?
For indoor joints, yes, someone needs to let us in. Once we have agreed the job, you don’t need to watch us work.
Can sand mastic be painted?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we will advise.
Towns and villages near Combe
Also in Combe
What we can’t put right
A few problems are outside what sealant work can do:
- Damaged stone surrounds
- Decisions on consent for listed homes
- Sashes that need overhauling
If you are not sure, just ring 0345 464 0079 or email us and we will give you a straight answer before booking.
Where we work in Combe
- Tenement windows
- Timber door frames
- Stone surrounds
- Period & listed homes
- Brick reveals
- Sash and case windows
What we are called out for in Combe
Shallow joints are a common cause. A thin layer does not hold well so we make sure the new mastic is the right thickness.
Keep an eye out for any of the following:
- Crumbling sand mastic round a window
- Wind and rain getting in round a sash window
- Mastic round period door frames that has failed
- Patchy fillers round a sash window
If you live in an older home near St Laurence's Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
What your quote should include
- What happens if they find a problem under the old sealant
- What insurance they hold
- How the joint is cleaned and prepared
- Whether they seal over old material or remove it
Why it’s worth doing now in Combe
Before painting the windows, it pays to renew the mastic. Paint over cracked mastic will not stop the gaps, and the new mastic is traditionally left unpainted. Older cottages and farmhouses around Combe can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
What it costs depends on the amount of work, how hard the old material is to remove and access to the work. We give a clear quote before work begins, so you know where you stand.
Why book with us
- Experience in homes, commercial sites and hotels
- 180+ five-star Google reviews
- One-year guarantee on every job
- We never seal over old sealant
Sand mastic in Combe: local notes
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Blenheim Palace (about 1.9 miles east) are a reminder that the area around Combe has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Managing a site like Combe CofE Primary School? Then its window and door frames need their mastic kept sound, just like a home’s. If you let a flat or house near Combe station, any sash windows need sound mastic to keep draughts and rain out.
Combe is about 5 miles north-east of Witney, in Oxfordshire. Every kind of property in Combe is covered for sand mastic. The work is guaranteed for a year. We cover 443 towns and villages across Oxfordshire, large and small. We also work in Oxford, around 10 miles away.
Every address in OX29 is within our area for sand mastic. That includes homes and businesses on Square Firs, Chatterpie Lane and Orchard Close and the roads around them. If you’re just outside Combe, we cover East End (1 mile south-west), Stonesfield (1 mile north-west), Freeland (2 miles south), North Leigh (2 miles south-west) and Fawler (3 miles west). Within a short drive, we also cover Oxford (10 miles south-east), Banbury (15 miles north), Bicester (11 miles east), Abingdon-on-Thames (13 miles south-east), Witney (5 miles south-west) and Carterton (10 miles south-west).
Around Combe
Locally, jobs take us to homes and businesses close to The Cock Inn, among other places. The closest station to Combe is Combe station, roughly 0.8 miles south-east of the centre. A little further out are Morris Motors Museum (1.8 miles south-east). Green spaces nearby include Blenheim Farm.