Hampshire · England
Window Mastic in South Ham
Our applicators work in South Ham on mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Untidy mastic left by window fitters
- Cracked internal joints between frame and plaster
- Rain getting in at the frame or under the sill
Window mastic for homes and businesses in South Ham
Most frames have an outside joint and an inside one. 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 uPVC windows, timber windows & doors and window sills, and people most often call us about water coming in at the bottom corners of a door and cracked or shrunken mastic around the frame.
Houses in smaller places like South Ham can stand more in the open than those in a built-up town. That is hard on the mastic around frames and sills.
Each job carries a 12-month guarantee, whatever its size.
- Where
- South Ham (RG22, RG21, RG23)
- Region
- Hampshire
- Cover
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Why act early in South Ham
Once mastic fails, rain can get between the frame and the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. Resealing now is a small job by comparison. In a smaller place like South Ham, wherever a wall is exposed, a failed outside joint is a real source of damp. Indoors, a failed seal lets water into floors and panels as it would anywhere.
Doing several joints on one visit normally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We’ll send you a clear quote for the lot.
Why book with us
- 180+ five-star Google reviews
- You choose the colour before work begins
- Anti-fungal silicone where joints get wet
- Trusted Arbo and Everbuild sealants
Should I try it myself first?
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
How to look after the new joints
Looking after new joints is easy:
- Use gentle cleaners on frames and sealant
- Avoid harsh chemicals near the mastic
- Keep timber frames painted
- Avoid blasting the frames with a pressure washer
Timber frames need their paint kept up, because bare, wet timber moves more and pulls at the joint. Paint up to the joint, not over the silicone.
A small gap around a frame only grows. As the old mastic shrinks further, more air gets through, and heat escapes around the frame. A new joint closes it up.
Surface by surface
Patio & French doors
Patio and French doors have the longest joints on most houses. Most leaks start at the bottom corners, so they get particular care.
uPVC windows
Plastic frames move a lot between a hot afternoon and a cold night, so we use a flexible, low-modulus sealant. We match white, brown, anthracite grey and black frames.
Questions from South Ham
Do you cover South Ham for window mastic?
Yes, South Ham is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or email us with a few details of the job.
I let a flat near Basingstoke station. Can you help?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before any work starts.
Can I do it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Is the work guaranteed?
Yes. Our one-year guarantee covers every job, inside or out.
Can you get sealant to suit coloured frames?
Normally, yes. Mention the frame colour when you ask for a quote and we’ll use the nearest match.
Will resealing my frames help with draughts?
Yes, if the air is getting in around the frame. If it’s coming through the window seals, we’ll tell you.
How long does it take to reseal the windows on a house?
Allow a morning for a couple of windows and a door. Access and how stubborn the old mastic is affect the time most.
Will there be a smell?
That depends on the sealant. Some smell for a while, some hardly at all.
Work for landlords, hotels and businesses
Landlords and letting agents in South Ham can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we will quote.
What happens on the day
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The work itself takes a few hours for a handful of frames, longer for a whole house from start to finish. A visit to South Ham is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We check each frame and agree which ones need doing.
- We remove the old mastic and clean the frame and the wall.
- Deep gaps are filled with backing rod to set the depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Finally we tidy up and check each joint.
How to prepare
- Move anything stored near the joints
- Let us know about stairs, lifts or work at height
- Try not to wet indoor joints just before the visit
Get a quote
Want a quote for window mastic? Please phone 0345 464 0079 or email us and tell us about the job. We will explain what we’d do and give you a clear price before any work starts.
Advice
Quotes for window mastic in South Ham
The price is agreed before any work begins. It takes into account:
- How many rooms, windows or areas are involved
- The old material and how stubborn it is
- Any mould that needs treating
- How much there is to do
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Helping us quote
There’s no need for technical detail. It helps if you can tell us:
- The rough size of the job
- Whether it’s a home or a business
- Whether it has been sealed before
- Any access issues, like height or stairs
We do not publish a price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or drop us an email.
What window mastic looks like in South Ham
With historic houses such as The Vyne (about 3.5 miles north) nearby, there’s older building stock in the area around South Ham as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In the older streets around Saint Peter's Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame. If you let a flat or house near Basingstoke station, renewing tired window mastic between tenants heads off draught and damp complaints. Managing a site like St Anne's Catholic Primary School? Then its window and door frames need their mastic kept sound, just like a home’s.
South Ham is about 1 mile south-west of Basingstoke, in Hampshire. Anywhere in RG22, our applicators can take on window mastic. Our Hampshire coverage runs to 683 places, South Ham among them. For nearby work, see our Reading page.
Work in RG22, RG21 and RG23 is quoted and booked the same way as anywhere else. Whether your property is on Pheby Road, Wella Road and Lennox Road or anywhere close by, we can help. Neighbouring places we cover for window mastic include Brighton Hill (1 mile south), Basingstoke (1 mile north-east), Winklebury (1 mile north-west), Buckskin (1 mile west) and Worting (1 mile west). Within a short drive, we also cover Farnborough (15 miles east), Fleet (12 miles east), Aldershot (15 miles east), Alton (10 miles south-east), Yateley (13 miles north-east) and Tadley (7 miles north).
Landmarks near South Ham
Locally, jobs take us to homes and businesses close to Aldworth School, Coppice Spring School and Eastrop Park and the streets around them. For rail, the closest station is Basingstoke station, roughly 1.2 miles north-east. A little further out are Basingstoke and North Hampshire Hospital (1.5 miles north) and Basing House (2.7 miles east). For a walk, there’s Farleigh Hill and Daneshill Park Woods.