Oxfordshire · England
Sand Mastic in Marston
Sand mastic for Marston and the surrounding area: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Cracked mastic round a front door frame
- Mastic dropping out of the joint
- Draughts and rain around sash boxes
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
Sand mastic in Marston, done properly
Silicone on a period window often looks wrong and does not suit the building. Sand mastic gives a finish that matches the age of the house, and we can replace one with the other. Common call-outs are for weathered mastic on the most exposed windows and gaps where the frame meets the masonry, across stone surrounds, period & listed homes and tenement windows.
Around Marston, 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.
A one-year guarantee comes as standard, so you are covered after we’ve gone.
- Where
- Marston (OX3, OX2)
- Wider area
- Oxfordshire
- Cover
- 12 months on all our work
- Quotes
- A clear price before work begins
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Different surfaces, different methods
Brick reveals
Gaps between frame and brick let in rain and draughts. New mastic seals the gap.
Sash and case windows
Sash windows are where we do most sand mastic work. Each joint round the box is raked out and renewed.
Can I do it myself?
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
What we are called out for in Marston
Shallow joints are a common cause. Mastic that’s too thin cracks and drops out, which is why we pack deep voids first and get the depth right.
If you can see any of these, it’s time to have the joints looked at:
- Open joints round the window box
- Weathered mastic on the most exposed windows
- Tired mastic found when preparing windows for paint
- Modern sealant on a period surround
In the older streets around Church of St Nicholas, the joint between an old wall and a newer frame is normally the first place rain gets in.
What your quote should include
- What preparation is included
- How long to leave it before use
- Is VAT in the price?
- How much experience the applicator has
Why deal with it now?
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. Where a wall is exposed, as many are in small places like Marston, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Why book with us
- Homes, businesses and hotels
- An ARBOMaster approved applicator
- Tidy, careful work
- Old sealant always removed completely
What sand mastic looks like in Marston
With historic houses such as Holywell Manor (about 1.5 miles south) nearby, there’s older building stock in the area around Marston as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. 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.
Rented homes near Oxford station change hands often, and any sash windows need sound mastic to keep draughts and rain out. Schools such as St Nicholas Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Marston is about 2 miles north of Oxford, in Oxfordshire. From the centre of Marston to the outskirts, sand mastic is available for homes and businesses alike. We cover 443 towns and villages across Oxfordshire, from the larger towns to small villages.
Jobs for sand mastic in OX3 and OX2 is quoted and booked the same way as anywhere else. Whether your property is on Back Lane, Mill Lane and Butts Lane or a nearby road, our applicators can take on the job. Close by, we work in Northway (1 mile south-east), New Marston (1 mile south), Norham Manor (1 mile south-west), Summertown (1 mile west) and North Oxford (1 mile west). Further out, we also cover Didcot (12 miles south), Bicester (9 miles north), Abingdon-on-Thames (7 miles south), Witney (11 miles west), Carterton (15 miles west) and Thame (12 miles east).
What’s near Marston
Locally, jobs take us to homes and businesses close to Oxford University Parks, Oxford Academy and Swan School, among other places. Nearby too are Victoria Arms (0.5 miles west) and St Hugh's College Main Building Including Library (1.3 miles south-west). For rail, the closest station is Oxford station, about 2.2 miles south-west of the centre. Well-known places in the area include Pitt Rivers Museum (1.5 miles south-west) and Oxford Castle (2.1 miles south-west). Not far away are Headington Hill and Hook Meadow and The Trap Grounds.
Also near Marston
What else we do in Marston
Common questions in Marston
Will you come out to Marston?
Yes. Marston is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
I let a flat near Oxford station. Can you help?
Yes, we work for letting agents and landlords. Just call 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear price.
Will there be a smell?
It depends on the product. Some smell for a while, some hardly at all, and any smell fades as they cure.
Which is right for my windows, sand mastic or modern sealant?
That depends on your windows. On many period windows, sand mastic looks right and suits the building, while modern frames normally get a flexible sealant.
Do you have insurance?
Yes. We are fully insured, and we can confirm the details when we quote.
Do you remove the old sealant?
Yes. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Do I have to be there?
It depends on the job. For work indoors, someone needs to let us in.
Can I do it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
What affects the quote in Marston
The quote reflects the job in front of us. We look at:
- The amount of work
- How many areas need sealing
- When we can work, for business premises
- Whether old sealant or filler has to be cut out
The cost reflects the work involved, not a rough estimate. That is why we ask about the job first.
What we need to know
Photos by email are helpful but not essential. Try to tell us:
- Pictures of the joints, sent by email
- Whether it’s a home or a business
- Access, such as stairs, a lift or height
- How many joints, rooms or windows are involved
Getting a quote is simple: let us know the job and the location. A few photos by email make the job easier to understand, and we will come back to you with a quote.
What we do, step by step
Most of a good job is in the preparation, so that is where we spend the time. Every joint is cleaned and dried before new material goes in. In total, it normally takes a few hours per window, depending on the condition of the joints. Somewhere like Marston needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
How to prepare
- Let us know if you’ve seen damp or leaks
- Plan for the work area to be out of bounds to pets and children
- On commercial sites, let us know about site rules
Ask for a quote
Every job is quoted individually, so the first step is telling us about yours. Just call 0345 464 0079 or send us an email with the details, and pictures are welcome.