Hampshire · England
Window Mastic in Owslebury Bottom
Problem with your window and door frames in Owslebury Bottom? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Mastic that’s falling out in pieces
- Untidy mastic left by window fitters
- Mastic that has split away from the wall
Window mastic for homes and businesses in Owslebury Bottom
There are two joints on most windows. Outside, the mastic keeps rain out; the internal joint closes the gap to the plaster and stops draughts. Either or both can be done. We work on window sills, aluminium frames and uPVC windows, and common reasons people get in touch are gaps where the sill meets the wall and untidy mastic left by window fitters.
Outdoor sealant needs dry, clean surfaces, so work on frames around Owslebury Bottom is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
Every job comes with our 12-month guarantee.
- Where
- Owslebury Bottom (SO21)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Signs you need window mastic in Owslebury Bottom
Frames are never completely still. Sun on a frame makes it expand, and it contracts again overnight, while the masonry beside it stays put. A sealant that can’t keep up eventually tears.
These are the problems we’re asked about most:
- Mastic that has split away from the wall
- Leaking joints at the ends of sills
- Gaps left after new windows were fitted
- Draughts coming in around windows and doors
If you let a flat or house near Shawford station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Before you book anyone
- Whether they’re fully insured
- How the colour is chosen
- What guarantee comes with the work
- How much experience the applicator has
Aftercare tips
Aftercare is simple, and it makes a real difference:
- Ventilate rooms so frames do not stay wet inside
- Avoid harsh chemicals near the mastic
- Clear any debris from frame drain holes
- Look round the frames every year or so
Wipe the frames with soapy water when you clean the windows, and avoid solvent cleaners on the sealant.
Water trapped behind a failed joint can start rot in timber frames and sills. Rotten timber needs a joiner, not a sealant, so it pays to reseal before that happens.
What affects the cost of window mastic
The price is agreed before any work begins. It takes into account:
- The number of rooms or windows
- The size of the job
- Access and height
- The product the joint needs
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
What we need to know
Before you ask for a quote, have a think about:
- Pictures of the joints, sent by email
- Access, such as stairs, a lift or height
- The type of property
- What’s wrong with the joints now
If you are in Owslebury Bottom and need window mastic, call 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before we start.
Should I try it myself first?
The difference is mostly in the preparation and the 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.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly.
Common questions in Owslebury Bottom
Is Owslebury Bottom in your area for window mastic?
Yes. Our work covers London and the South East, and Owslebury Bottom is part of that. You can phone 0345 464 0079 or email us and tell us what needs doing.
Is Owslebury Bottom within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you reach windows above the ground floor?
Generally, yes. We plan safe access before the job.
Do you work for letting agents?
Yes, regularly. Several properties can go on one quote, and between tenancies is a good time for the work.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we are fully insured.
Are you fully insured?
Yes. Mr Mastic is fully insured, and we have been doing sealant work for more than 20 years.
Can tenants book the work?
Yes, but check with your landlord or agent first. Landlords are often happy for the work to be arranged.
Can resealing stop a draught around my window?
Yes, where the draught is at the frame edge. We find where the air is coming from before we reseal.
Work for landlords, hotels and businesses
For anyone letting property in or around Owslebury Bottom, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Honest limits
It helps to know what we can’t do too:
- Penetrating damp from a failed cavity tray or render
- A failed sealed unit that has misted up
- A door that needs adjusting, rehanging or new seals
If you are not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer.
What we seal
- uPVC windows
- Timber windows & doors
- Composite doors
- Aluminium frames
- Patio & French doors
- Window sills
How it works
Before we leave, we go over the finished joints with you and explain the cure time. The work normally takes a morning for a couple of windows and a door, depending on the size of the job. Somewhere as small as Owslebury Bottom, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each frame is looked over and we agree which ones need resealing.
- The old mastic is cut out and scraped back to clean surfaces.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
Preparing for the visit
- Mention any leaks or damp you’ve noticed
- Clear the area around the work
- For business premises, tell us about site rules or sign-in
Ask for a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. Whenever you are ready, call 0345 464 0079 or drop us an email.
Related advice
Also near Owslebury Bottom
What else we do in Owslebury Bottom
Window mastic in Owslebury Bottom: local notes
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.
For an older house near a landmark such as Church of St Andrew, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. If you look after a building such as Owslebury Primary School, its window and door frames need their mastic kept sound, just like a home’s.
Owslebury Bottom is about 4 miles south-east of Winchester, in Hampshire. Our applicators cover window mastic for homeowners, landlords and businesses in Owslebury Bottom. Owslebury Bottom is one of 683 places in Hampshire where we work for window mastic. There’s also a page for Southampton, about 9 miles away.
Our applicators cover all of SO21 for window mastic. Close by, we work in Owslebury (1 mile south), Baybridge (1 mile south-east), Morestead (1 mile north), Hensting (1 mile south-west) and Lane End (3 miles east). Further out, we also cover Winchester (4 miles north-west), Gosport (15 miles south), Eastleigh (5 miles south-west), Fareham (12 miles south), Horndean (13 miles south-east) and Totton (12 miles south-west).
Around Owslebury Bottom
Locally, jobs take us to homes and businesses close to Ship Inn. For rail, the closest station is Shawford station, about 2.7 miles west. Well-known places in the area include The Gurkha Museum (3.5 miles north-west) and Wolvesey Castle (3.6 miles north-west). Open spaces near Owslebury Bottom include Hockley Meadows and Twyford Down.