Oxfordshire · England
Fritwell Window Mastic
Professional window mastic in and around Fritwell, with old sealant always removed completely.
- Black, perished sealant on frames
- Damp patches on the reveal after heavy rain
- Untidy mastic left by window fitters
Window mastic in Fritwell, done properly
From a single sill to a whole house of windows, the work is priced before anything is done. To get one, ring 0345 464 0079 or send us an email with the number of frames and any access details. If you are dealing with draughty joints inside around the window and mastic that’s falling out in pieces, we can put it right.
Homes in small places like Fritwell often stand in the open, with little to shelter their windows from wind and rain. Exposed frames and sills lose their mastic sooner than sheltered ones.
All our work comes with our one-year guarantee, wherever you are in Oxfordshire.
- Place
- Fritwell (OX27)
- Wider area
- Oxfordshire
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Fritwell questions
Is Fritwell within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you cover Fritwell for window mastic?
Yes, Fritwell is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or email us with a few details of the job.
What should I tell you?
A short description and the location, plus pictures if you have them. We will ask anything else we need to know.
Will there be a smell?
Some sealants have a smell while they cure. Opening a window helps.
Where do you work from?
We are based in Crawley, West Sussex, and we work across South East England, London and Scotland.
Do you work for letting agents?
Yes. We work for householders, landlords, letting agents, businesses and hotels in Fritwell.
Will you leave a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
Do you have sealant for grey or black windows?
Yes. We can use white, brown, anthracite grey, black or clear.
What we cannot put right
We won’t take on work that will not last, so here’s what sealant can’t put right:
- Damp problems in the wall away from the window
- Condensation trapped between the panes
- A sash or casement that will not close properly
If you are not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer.
Where we work in Fritwell
- uPVC windows
- Aluminium frames
- Composite doors
- Timber windows & doors
- Patio & French doors
- Window sills
The process
Once we are on site, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. Most jobs then take a few hours for a few frames, or a day or more for a whole house. Somewhere as small as Fritwell, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check how each frame can be reached safely.
- All the failed sealant is cut away, along with any loose debris.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
Preparing for the visit
- Mention any parking rules near the property
- Keep children and pets away from the work area
- On commercial sites, let us know about site rules
Ask for a quote
Want a quote for window mastic? Please ring 0345 464 0079 or send us an email and tell us about the job. We will explain what we’d do and give you a clear price before any work starts.
Related advice
Fritwell homes and the weather
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Managing a site like Fritwell Church of England Primary School? Then its window and door frames need their mastic kept sound, just like a home’s. For landlords with property near Heyford station, renewing tired window mastic between tenants heads off draught and damp complaints.
Fritwell is about 5 miles north-west of Bicester, in Oxfordshire. If you need window mastic in Fritwell, it’s easy to get a quote: please call 0345 464 0079 or send us an email. We are based in Crawley and cover Oxfordshire, Fritwell included. Fritwell is one of 443 places in Oxfordshire we cover for window mastic. There’s also a page for Oxford, roughly 14 miles from Fritwell.
Here we cover the OX27 postcode area for window mastic. Whether your property is on East Street, Fewcott Road and Hodgson Close or anywhere close by, our applicators can take on the job. Other places close to Fritwell include Fewcott (1 mile south-east), Souldern (1 mile north), Ardley (1 mile south-east), Somerton (2 miles west) and Upper Heyford (2 miles south-west). We also work in nearby towns such as Oxford (14 miles south), Banbury (9 miles north-west), Bicester (5 miles south-east), Kidlington (10 miles south), Headington Quarry (14 miles south) and Bure Park (5 miles south-east).
Local landmarks in Fritwell
We work in homes and buildings around George and Dragon pub and the streets around them. The nearest railway station is Heyford station, roughly 4 miles south-west of the centre. Other landmarks nearby include Ardley Castle (1.4 miles south-east) and Bicester Community Hospital (5.4 miles south-east).
Other services in Fritwell
Leave it or put it right?
A cracked joint around a frame lets rain into the wall. Over time that can mean damp patches, damaged plaster and rotting timber. Resealing now is a small job by comparison. Older cottages and farmhouses around Fritwell can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
Why choose Mr Mastic in Fritwell
- Over 20 years’ experience
- Arbo and Everbuild products
- Rated 4.9 stars on Google
- We leave the area clean and tidy
Different surfaces, different methods
Timber windows & doors
Soft or rotten wood can’t be sealed successfully. We’ll point out any rot we find, as a joiner will need to deal with it.
uPVC windows
Fitters’ mastic on plastic frames is sometimes thin and rushed. We cut it out, back any deep gaps and reseal properly.
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
Common problems we fix in Fritwell
Some failures date back to when the windows were fitted. Mastic laid onto dusty, damp or crumbling surfaces didn’t grip properly, and it lets go sooner than it should.
Most people get in touch after spotting one of these:
- Gaps left after new windows were fitted
- Mastic that is falling out in pieces
- Whistling draughts around closed windows
- White mastic on grey or black frames
Homes close to Church of St Olave include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
What your quote should include
- When the joint can take water or movement
- What insurance they hold
- How much experience the applicator has
- What guarantee comes with the work
How to look after the new joints
Joint life depends on how it’s used and looked after. We suggest:
- Avoid harsh chemicals near the mastic
- Keep drainage slots and sill grooves clear
- Walk round the house once a year and look at the joints
- Avoid blasting the frames with a pressure washer
Wipe the frames with soapy water when you clean the windows, and keep solvents and harsh chemicals off the joint.
Draughts get worse, not better. As old mastic keeps shrinking, the gap widens, and a cold room gets colder. Resealing closes it.