Hampshire · England
South Town Window Mastic
Mastic around window and door frames, sills and patio doors in South Town, with a 12-month guarantee on every job. Ask us for a quote.
- Mastic that has split away from the wall
- Draughty joints inside around the window
- Whistling draughts around closed windows
Window mastic in South Town
From a single sill to a whole house of windows, you’ll get a clear quote before any work starts. Just phone 0345 464 0079 or drop us an email and tell us how many frames there are and how they’re reached for window mastic in South Town. If you have water coming in at the bottom corners of a door and whistling draughts around closed windows, we can help, whatever the surface.
Outdoor sealant needs dry, clean surfaces, so work on frames around South Town is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
All our work comes with our one-year guarantee.
- Where
- South Town (GU34)
- Region
- Hampshire
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Surface by surface
Composite doors
Front doors take the weather head on. Those corners get the most care.
Aluminium frames
Metal frames expand in the sun and are often slim, with little room for error. A neat, narrow bead in a colour to match keeps the clean look.
Your questions about window mastic in South Town
Can you do window mastic in South Town?
Yes. Our work covers London and the South East, and South Town is part of that. You can phone 0345 464 0079 or send us an email and tell us what needs doing, and we will give you a clear price.
Do you work for landlords with property near Alton station?
Yes. We work for landlords and agents as well as homeowners. Just ring 0345 464 0079 or send us an email with the address and what needs doing, and we will give you a clear quote.
What do you put in the joint?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we’ll tell you what we are using.
Are you ARBOMaster approved?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
Can you match the sealant to my frames?
Generally, yes. Mention the frame colour when you ask for a quote and we will use the nearest match.
Does the work come with a guarantee?
Yes. Every job comes with our 12-month guarantee, and we are ARBOMaster approved applicators.
Is it worth trying it myself?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
How do I get a quote for window mastic in South Town?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before we start.
Also in South Town
What we’re called out for in South Town
Water runs down the glass onto the sill, and the ends of the sill, where it meets the wall, are where it gets in. Failed sealant there lets rain into the wall or behind the frame.
Signs it’s time to call us include:
- Untidy mastic left by window fitters
- Cracked internal joints between frame and plaster
- Draughts coming in around windows and doors
- Leaking joints at the ends of sills
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.
What your quote should include
- Whether the sealant suits the joint
- How the joint is cleaned and prepared
- How long to leave it before use
- Whether VAT is included
What affects the cost of window mastic
We do not publish a price list, because jobs vary so much. The quote depends on:
- The old material and how stubborn it is
- Any working-time requirements on site
- Whether there’s mould to deal with
- The type of sealant required
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. The price is agreed before we begin.
What to tell us for a quote
You don’t need to know the technical terms. It helps if you can tell us:
- What the problem is, such as mould, gaps, leaks or cracking
- Access, such as stairs, a lift or height
- Any previous sealing or DIY work
- Photos by email, if that’s easy
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we’ll explain what’s involved and send you a clear quote.
What window mastic looks like in South Town
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Bentworth Hall (about 1.4 miles north-east) are a reminder that the area around South Town has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Schools such as Medstead Church of England Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. If you let a flat or house near Alton station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
South Town is about 4 miles west of Alton, in Hampshire. Anywhere in GU34, we cover window mastic for homes and businesses. South Town is one of 683 places in Hampshire we cover. You can also see our page for Southampton, roughly 20 miles from South Town.
Work in GU34 is quoted and booked the same way as anywhere else. That includes homes and businesses on High Street, Church Lane and Green Stile. We also cover the places around South Town: New Copse (1 mile north), Hattingley (1 mile west), Medstead (1 mile south-east), Soldridge (1 mile south) and Holt End (1 mile north). Larger places within reach include Basingstoke (10 miles north), Winchester (12 miles south-west), Fleet (14 miles north-east), Horndean (15 miles south), Alton (4 miles east) and Petersfield (10 miles south-east).
Near you in South Town
The closest station to South Town is Alton station, roughly 4.5 miles east of the centre. Well-known places in the area include Barton Castle (2.2 miles west) and Alton Community Hospital (3.4 miles east). The countryside around South Town includes King's Hill.
Why it’s worth doing now in South Town
Resealing frames is a short job: it takes most of a day for a typical house, less for a few frames. Wait for damp to appear and there may be plaster and decorating to sort out too. Older cottages and farmhouses around South Town can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part.
Why South Town clients choose us
- 12-month guarantee on every job
- Over 20 years’ experience
- An ARBOMaster approved applicator
- Domestic, commercial and hotel work
Read what affects the cost and what customers say.
The process
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes a few hours for a handful of frames, longer for a whole house. For a village or hamlet like South Town, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- Each frame is looked over and we agree which ones need resealing.
- The old mastic is cut out and scraped back to clean surfaces.
- Deep gaps get closed-cell backing rod to set the depth.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
Getting ready for the visit
- Let us know about earlier repairs to the joints
- Plan for the work area to be out of bounds to pets and children
- Let us know about stairs, lifts or work at height
How to get a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that’s easy.
Related advice
Work for landlords, hotels and businesses
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
We also work for property managers and facilities teams in South Town and across Hampshire. We can quote a run of properties together, and we are fully insured.
DIY versus a professional finish
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
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.