Hampshire · England
Window & door mastic in Cheriton, Hampshire
Window mastic in Cheriton from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Damp patches on the reveal after heavy rain
- Old mastic that has gone black or come away
- A bead that does not match the frame
About our window mastic in Cheriton
The new joint doesn’t have to be white. We can seal in white, brown, anthracite grey, black or clear, so the line suits the frame instead of standing out. We are often asked to deal with water coming in at the bottom corners of a door and cracked internal joints between frame and plaster, across patio & French doors, uPVC windows and composite doors.
Mastic can only go onto a dry, clean joint, so window work in Cheriton is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Location
- Cheriton (SO24)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
What we are called out for in Cheriton
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.
The problems people generally mention when they call include:
- Cold air getting in at the frame edge
- Rain getting in at the frame or under the sill
- Mastic that has split away from the wall
- Draughty joints inside around the window
Managing a site like Cheriton Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
What to look for in a quote
- Which sealant they’ll use, and why
- What guarantee comes with the work
- Whether all the old sealant comes out first
- What insurance they hold
Nearby places to Cheriton
What else we do in Cheriton
How to look after the new joints
No joint lasts for ever, but care makes a real difference. A few tips:
- Walk round the house once a year and look at the joints
- Air rooms to keep condensation down around windows
- Keep jet washers away from the mastic
- Clean frames with a soft cloth and soapy water
A yearly look round the frames is enough. Small splits are simple to catch before they leak, and if anything looks wrong, just ring 0345 464 0079 or drop us an email.
On timber windows, water behind the joint can lead to rot. Rotten timber needs a joiner, not a sealant, so it pays to reseal before that happens.
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it lifts and traps water and mould underneath. Everything old must be removed 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 fails, we can still redo it.
Cheriton homes and the weather
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. With historic houses such as Hinton Ampner House (about 0.8 miles south-east) nearby, there’s older building stock in the area around Cheriton as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
In the older streets around Church of St Michael, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Cheriton is about 7 miles east of Winchester, in Hampshire. Cheriton gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Cheriton is one of 683 towns and villages in Hampshire where we work. Southampton is on our list too, around 14 miles away.
Work in SO24 works the same way as everywhere else we cover. Window mastic is available to properties on Lower Lamborough Lane, Raebarn Close and Markall Close. Other places close to Cheriton include Hinton Ampner (1 mile east), Beauworth (2 miles south-west), Bramdean (2 miles east), New Alresford (2 miles north) and Bishop's Sutton (3 miles north-east). Larger places within reach include Basingstoke (15 miles north), Winchester (7 miles west), Havant (15 miles south-east), Eastleigh (10 miles south-west), Fareham (14 miles south) and Horndean (12 miles south-east).
Near you in Cheriton
In Cheriton, that means homes and buildings near The Flowerpots Inn. Open spaces near Cheriton include Beacon Hill and Shutts Copse.
Cheriton: your questions answered
Can you do window mastic in Cheriton?
Yes, Cheriton is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or email us and tell us what needs doing.
What guarantee comes with window mastic in Cheriton?
All our work, in Cheriton and everywhere else, comes with a 12-month guarantee. We’re fully insured, and an ARBOMaster approved applicator.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us.
Which products do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Do you have insurance?
Yes. Full insurance covers our work.
Can I do it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. If it does not work out, we can redo it.
Can you get sealant to suit coloured frames?
Usually, yes. Mention the frame colour when you ask for a quote and we’ll use the nearest match.
Can you seal over the old sealant?
No. New silicone won’t bond to old silicone, and it traps any mould or water underneath. It all has to come out first.
The process
Good joint work is mostly preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes most of a day for a typical house, less for a few frames. Somewhere like Cheriton needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First, we confirm safe access to each frame.
- All the failed sealant is cut away, along with any loose debris.
- The surfaces are cleaned and left dry.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
Getting ready for the visit
- Tell us if parking is tricky
- Try not to wet indoor joints just before the visit
- Tell us about any water getting in
Ask for a quote
There’s no standard price list. Instead, we give you a clear price for your job. To get started, call 0345 464 0079 or send us an email.
Related advice
Why act early in Cheriton
Choosing the product is half the job. Decorators’ caulk and bathroom silicone are not designed for outside joints that move. A low-modulus exterior sealant keeps its stretch through hot and cold weather. Where a wall is exposed, as many are in small places like Cheriton, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part.
Why choose Mr Mastic in Cheriton
- Neat joints and a tidy finish
- Quality sealants from Arbo and Everbuild
- 20+ years of sealant experience
- A choice of colours where the product allows
Take a look at our cost guide and what customers say.
What the job involves on each surface
Patio & French doors
Water at the foot of a door frame isn’t always the mastic: blocked drain slots, worn brush seals and threshold details can let water in too. We check before we reseal.
Window sills
Stone and concrete sills have their own joints, and the joint under the frame can let rain run behind. We seal those with a sealant suited to masonry.
Quotes for window mastic in Cheriton
The quote reflects the job in front of us. We take into account:
- When we can work, for business premises
- Whether the work is at height
- Whether there’s mould to deal with
- The size of the job
The cost depends on the size of the job, how much old material has to come out and how easy the joints are to reach. We give a clear quote before any work starts, so you know where you stand.
What to tell us for a quote
When you call or email, it’s useful to know:
- The type of property
- How we’d reach the joints
- Photos by email, if that’s easy
- The rough size of the job
For a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We’ll give you a clear price before any work starts.