Hampshire · England
Window & door mastic in Medstead, Hampshire
Mastic around window and door frames, sills and patio doors for Medstead, backed by a 12-month guarantee. Call for a quick quote.
- Gaps where the sill meets the wall
- Gaps left after new windows were fitted
- Damp patches on the reveal after heavy rain
Window mastic in Medstead, done properly
Mr Mastic’s applicators have more than 20 years’ experience with window and door sealants. We are fully insured ARBOMaster approved applicators, and every job is covered by a 12-month guarantee. If you’re dealing with black, perished sealant on frames and leaking joints at the ends of sills, we can put it right, on uPVC windows, timber windows & doors and composite doors alike.
Around Medstead, conservatories, garden rooms and patio doors are often part of the house. Those joints need the same attention as the main windows.
Every job is covered by a one-year guarantee.
- Location
- Medstead (GU34)
- Wider area
- Hampshire
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Medstead questions
Can you help a landlord with a rental near Alton station?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before we start.
Will you come out to Medstead?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Which products do you use?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We’ll tell you what we are using and why.
Does the work come with a guarantee?
Yes. Our one-year guarantee covers every job, inside or out.
Are you an approved applicator?
Yes. We hold ARBOMaster approved applicator status.
Can you work on commercial sites?
Yes. Larger jobs can be planned room by room or area by area to suit the site.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned.
Can you match the sealant to my frames?
Yes, in most cases. Mention the frame colour when you ask for a quote and we will match it as closely as we can.
What the job involves on each surface
Composite doors
Draughts round the door leaf generally come from worn seals or adjustment, not the mastic. We’ll tell you if that’s what we find.
Timber windows & doors
Wood swells when it’s wet and shrinks when it dries, so a flexible sealant is essential. We seal onto sound, dry paintwork or timber.
Honest limits
We’d rather tell you now than do work that will not last, so these are the limits:
- A door that needs adjusting, rehanging or new seals
- Condensation trapped between the panes
- Rotten timber, which needs a joiner first
If in doubt, call 0345 464 0079 or email us and we’ll say what we think.
Surfaces we seal
- Composite doors
- Timber windows & doors
- uPVC windows
- Patio & French doors
- Aluminium frames
- Window sills
Towns and villages near Medstead
More services for Medstead
Looking after it afterwards
How long the joints last depends on use and care. We suggest:
- Do not paint over the silicone
- Keep drainage slots and sill grooves clear
- Wash the frames with mild soapy water
- Repaint timber before it’s bare
Check the drainage slots in the frames are not blocked, so water can run away instead of sitting against the joint.
Water gets in quietly when mastic fails. You might not see it until plaster blows or a damp patch appears inside. Catching it early keeps the fix to a reseal.
What we’re called out for in Medstead
Water runs down the glass onto the sill, and the ends of the sill, where it meets the wall, are where it gets in. When that sealant fails, water gets into the wall or under the frame.
People normally contact us after spotting one of these:
- Draughty joints inside around the window
- Untidy mastic left by window fitters
- Whistling draughts around closed windows
- Sealant in the wrong colour for the frame
For an older house near a landmark such as Church of the Good Shepherd, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Before you book anyone
- Is the old sealant removed completely?
- How long the guarantee is
- How the joint is cleaned and prepared
- How much experience the applicator has
Work for landlords, hotels and businesses
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
DIY versus a professional finish
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
How the visit works
Once we’re on site, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take a morning for a couple of windows and a door. In a smaller place like Medstead, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- We tool each bead neatly and check every joint is closed.
Before we arrive
- Mention if the joints have been sealed before
- Tell us about access, such as stairs, a lift or high-level joints
- Let us know if you’ve seen damp or leaks
How to get a quote
If you are in Medstead and need window mastic, ring 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you’ll get a clear quote before we start.
Advice
Frames and glazing around Medstead
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 Bentworth Hall (about 2.1 miles north) nearby, there’s older building stock in the area around Medstead as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Managing a site like Medstead Church of England Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages. If you let a flat or house near Alton station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Medstead is about 4 miles south-west of Alton, in Hampshire. Wherever you are in the GU34 postcode area, we can carry out window mastic at your property. Medstead is one of 683 towns and villages in Hampshire we cover for window mastic. There’s also a page for Southampton, about 20 miles away.
Every address in GU34 is covered for window mastic. We cover properties on High Street, Five Ash Road and Stoney Lane. Close by, we work in Four Marks (1 mile south), South Town (1 mile north-west), Soldridge (1 mile south-west), New Copse (1 mile north) and Hattingley (2 miles north-west). Larger places within reach include Basingstoke (10 miles north), Winchester (12 miles west), Fleet (14 miles north-east), Horndean (15 miles south), Alton (4 miles north-east) and Petersfield (9 miles south-east).
Near you in Medstead
The nearest railway station is Alton station, about 4.4 miles north-east. A little further out are Barton Castle (3 miles north-west) and Alton Community Hospital (3.1 miles north-east). For a walk, there’s Red Hill.