Hampshire · England
Window Mastic in Southington
Mastic around window and door frames, sills and patio doors in Southington, with a 12-month guarantee on every job. Ask us for a quote.
- Leaking joints at the ends of sills
- Untidy mastic left by window fitters
- Gaps between the frame and the inside reveal
About our window mastic in Southington
Around Southington we seal all kinds of frames: from uPVC casements to timber and aluminium, along with patio doors, French doors and sills. Each gets a sealant chosen for the frame and the wall it meets. Common call-outs are for sealant in the wrong colour for the frame and gaps between the frame and the inside reveal, on uPVC windows, composite doors and timber windows & doors.
Around Southington, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
The work is covered for a year after we finish. If there’s a problem with it, please call 0345 464 0079 or email us.
- Where
- Southington (RG25)
- Wider area
- Hampshire
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Aftercare tips
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Avoid harsh chemicals near the mastic
- Use gentle cleaners on frames and sealant
- Paint up to the joint, not over it
- Keep timber frames painted
Wipe the frames with soapy water when you clean the windows, and keep solvents and harsh chemicals off the joint.
Look out for the warning signs: cracks in the mastic, gaps you can see light through, damp on the reveal or mould around the inside of the frame. Any of these is worth a call.
Southington: your questions answered
Is Southington in your area for window mastic?
Yes, Southington is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job.
Is Southington within the area you cover?
Yes, Southington is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can you seal over the old sealant?
No. The old sealant always comes out first, so the new joint bonds to clean surfaces.
Is it worth trying it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
Do you work for letting agents?
Yes, often. Several properties can be quoted together.
Is the work guaranteed?
Yes, for 12 months. A yearly look at the joints helps them last.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
Do you have sealant for grey or black windows?
Yes, we choose a colour to suit the frame. Anthracite grey, black, brown and white cover most frames, with clear as an option.
Windows and doors in Southington
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In the older streets around Church of St Mary, the joint between an old wall and a newer frame is generally the first place rain gets in. Schools such as Overton Church of England Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Southington is about 8 miles west of Basingstoke, in Hampshire. For window mastic in and around Southington, it’s easy to get a quote: please phone 0345 464 0079 or send us an email. We are based in Crawley and cover Hampshire, Southington included. Southington is one of 683 towns and villages in Hampshire we cover. For nearby work, see our Reading page, about 19 miles away.
All of RG25 is covered for window mastic, from the main roads to the quietest streets. Window mastic is available to properties on Vinns Lane, London Road and Dellands Lane. Neighbouring places we cover for window mastic include Overton (1 mile east), Quidhampton (1 mile north-east), Laverstoke (1 mile south-west), Freefolk (1 mile west) and Wells-in-the-Field (2 miles west). Larger places within reach include Basingstoke (8 miles east), Winchester (13 miles south), Andover (9 miles west), Alton (14 miles south-east), Tadley (10 miles north-east) and Hook (14 miles east).
Around Southington
Locally, jobs take us to homes and businesses close to The Greyhound pub, among other places. For rail, the closest station is Overton station, roughly 1.1 miles north-east. Not far away are Ladle Hill.
Can I do it myself?
A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
Nearby places to Southington
Other services in Southington
Different surfaces, different methods
Window sills
Sills catch the water running down the glass, so the joints at each end and underneath matter. They’re cut out and resealed with exterior sealant.
uPVC windows
uPVC expands and contracts noticeably with temperature, so the joint needs a low-modulus sealant that stays flexible. White is the usual colour, with brown, anthracite grey and black for coloured frames.
Landlords, agents and businesses in Southington
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
How it works
All our tools and materials come with us in the van, so there’s nothing for you to buy. Once we’ve agreed what’s being done, we protect the area and start. Most jobs take a few hours for a handful of frames, longer for a whole house. For a village or hamlet like Southington, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We check how each frame can be reached safely.
- Old, cracked mastic is removed completely.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
How to prepare
- Tell us about any water getting in
- Tell us about any previous sealing or DIY attempts
- Keep children and pets away from the work area
Ask for a quote
Every job is quoted individually, so start by telling us what you need. Just phone 0345 464 0079 or drop us an email with the details.
Advice
What we cannot put right
We’ll always be straight with you, so here’s what new sealant will not do:
- Broken hinges, locks or handles
- Penetrating damp from a failed cavity tray or render
- Rotten timber, which needs a joiner first
If in doubt, call 0345 464 0079 or email us and we’ll say what we think.
What we seal
- Timber windows & doors
- Window sills
- Aluminium frames
- Patio & French doors
- uPVC windows
- Composite doors
What we are called out for in Southington
Some failures date back to when the windows were fitted. Sealant run over dust, wet brick or loose mortar didn’t grip properly, and it lets go sooner than it should.
Look out for these signs:
- Leaking joints at the ends of sills
- Sealant in the wrong colour for the frame
- Hard, cracked sealant around windows
- Rain getting in at the frame or under the sill
For landlords with property near Overton station, renewing tired window mastic between tenants heads off draught and damp complaints.
What to look for in a quote
- Is the old sealant removed completely?
- Who does the work, and how experienced they are
- Whether you can choose the colour
- Which sealant they’ll use, and why