Oxfordshire · England
Window Mastic in North Oxford
Window and door frames in North Oxford need attention? We remove the old material, prepare the joints and seal them properly, with a one-year guarantee.
- Leaking joints at the ends of sills
- Gaps between the frame and the inside reveal
- Damp patches on the reveal after heavy rain
About our window mastic in North Oxford
If you can feel air around a shut window, the gap is often at the frame. A new joint stops the air getting through and quietens the whistle on windy days. Where the air is getting in through the window itself, we’ll say so. If you have white mastic on grey or black frames and hard, cracked sealant around windows, we can help, on timber windows & doors, window sills and aluminium frames alike.
In a smaller place like North Oxford, some walls face open ground and catch the full force of the weather, so exposed windows and doors face the weather head on. The mastic around frames on those walls tends to age faster.
Your job is guaranteed for a year, as with all our work.
- Where
- North Oxford (OX2)
- Region
- Oxfordshire
- Guarantee
- 12 months on all our work
- Quote
- A clear price before work begins
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What affects the cost of window mastic
We don’t publish a price list. The quote depends on:
- Any mould that needs treating
- How easy the joints are to reach
- Any working-time requirements on site
- How much old sealant there is and how hard it is to remove
Combining jobs into one visit is usually more efficient than separate visits. We will give you a clear quote for the lot.
Asking for a quote
Photos help, but a description is a good start. Please mention:
- Any access issues, like height or stairs
- The problem you’ve noticed
- How many joints, rooms or windows are involved
- Any previous sealing or DIY work
We do not publish a price list, as no two jobs are quite the same. Instead, we give you a clear quote for your job. To get started, ring 0345 464 0079 or email us.
How it works
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes most of a day for a typical house, less for a few frames and we leave things clean and tidy. Parking around North Oxford 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.
- We start by checking each window and door with you.
- Next the failed sealant is cut away and the joint cleaned.
- Deep gaps are filled with backing rod to set the depth.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- We clear up and check every joint is fully closed.
Before we arrive
- Mention if the joints have been sealed before
- Try not to wet indoor joints just before the visit
- Mention any tricky access
Getting a quote
Want a quote for window mastic? Please call 0345 464 0079 or drop us an email and tell us about the job. We’ll explain what we’d do and give you a clear quote before work begins.
Advice
How the job changes by surface
Patio & French doors
Not every patio door leak is a mastic problem: worn seals, blocked drainage slots or a poor threshold detail can be the cause. We check before we reseal.
Composite doors
Front doors take the weather head on, and the top and bottom corners tend to fail first. We pay most attention there.
North Oxford questions
Is North Oxford within the area you cover?
Yes. North Oxford 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.
Is North Oxford in your area for window mastic?
Yes. We work across London and the South East, and North Oxford is part of that. Just ring 0345 464 0079 or email us with a few details of the job.
Do you guarantee window mastic?
Yes. All our work carries a 12-month guarantee, and we are ARBOMaster approved applicators.
Do you have insurance?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Do the sealants smell?
Possibly a little. It fades as the sealant cures, and ventilation helps.
Can I paint over the new sealant?
Silicone generally will not take paint. Let us know beforehand, and we’ll use a paintable product where it suits.
Will you leave a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Can you do the inside joint as well?
Yes. Plenty of draughts come through the inside joint as well as the outside, so it can be worth sealing both.
North Oxford homes and the weather
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Holywell Manor (about 1.5 miles south-east) nearby, there’s older building stock in the area around North Oxford 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 is traditional sand mastic.
If you let a flat or house near Oxford station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. Managing a site like Oxford Academy? Then its window and door frames need their mastic kept sound, just like a home’s.
North Oxford is about 2 miles north-west of Oxford, in Oxfordshire. Whether you’re in the middle of North Oxford or further out, we cover window mastic for every kind of property, from flats and houses to offices and hotels. Our area takes in 443 places across Oxfordshire.
Every address in OX2 is within our area for window mastic. If you need window mastic at a property on Hobson Road, Linton Road and Banbury Road or anywhere close by, our applicators can take on the job. You’ll find North Oxford on the A4165, so it’s easy for us to get to. Nearby, we also carry out window mastic in Summertown (1 mile north), Park Town (1 mile south), Walton Manor (1 mile south), Norham Manor (1 mile south-east) and Sunnymead (1 mile north). Further out, we also cover Didcot (11 miles south), Bicester (10 miles north-east), Abingdon-on-Thames (7 miles south), Witney (10 miles west), Carterton (14 miles west) and Thame (13 miles east).
Local landmarks in North Oxford
We work in homes and buildings around St Aloysius' Catholic Primary School, Oxford University Parks and St Edward's School. Nearby too are St Hugh's College Main Building Including Library (0.5 miles south) and Dew Drop Inn (under half a mile north). The closest station to North Oxford is Oxford station, roughly 1.4 miles south of the centre. Other landmarks nearby include Oxford University Press Museum (1.1 miles south) and Oxford Castle (1.5 miles south). Not far away are Hook Meadow and The Trap Grounds and Headington Hill.
Places near North Oxford
Other services in North Oxford
Keeping the joints in good condition
Good habits help new joints last longer. A few tips:
- Check the mastic once a year
- Make sure the drainage slots aren’t blocked
- Ventilate rooms so frames do not stay wet inside
- Avoid harsh chemicals near the mastic
Check the drainage slots in the frames aren’t blocked, so water can run away instead of sitting against the joint.
A small gap around a frame only grows. As the old mastic shrinks further, more air gets through, and heat escapes around the frame. A new joint closes it up.
What happens if it’s left?
Getting a straight, even bead on an outside frame takes practice, especially on upper floors. We cut out properly, back deep gaps and tool every joint neatly, using a product chosen for the frame and wall. Around North Oxford, water from a failed joint in an older home can soak into timber and plaster, and that is a much bigger job than renewing the sealant.
What it costs depends on the amount of work, how hard the old material is to remove and how easy the joints are to reach. You’ll have a clear quote before any work starts.
Why North Oxford clients choose us
- Trusted Arbo and Everbuild sealants
- You choose the colour before work begins
- Domestic, commercial and hotel work
- Old sealant always removed completely
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Signs you need window mastic in North Oxford
Mastic ages in the weather. Sunlight dries the surface out, until it loses its stretch and starts to crack.
Any of these means the joints need attention:
- Draughts coming in around windows and doors
- Cracked internal joints between frame and plaster
- Cracked or shrunken mastic around the frame
- Water coming in at the bottom corners of a door
If you live in an older home near Church of St Michael and All Angels, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
What to look for in a quote
- Which sealant they’ll use, and why
- Whether all the old sealant comes out first
- How much experience the applicator has
- How long to leave it before use