Hampshire · England
Window & door mastic in Charlton, Hampshire
Window and door frames in Charlton need attention? We cut out the old, prepare the joints and apply the right sealant.
- Rain getting in at the frame or under the sill
- Old mastic that has gone black or come away
- Hard, cracked sealant around windows
Questions from Charlton
Do you work for landlords with property near Andover station?
Yes, landlords and agents are among the people we work for. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Do you cover smaller places like Charlton?
Yes. Charlton is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and you’ll get one quote.
Do you have sealant for grey or black windows?
Yes. White, brown, anthracite grey, black and clear sealants are all available.
Can new window sealant be painted?
Most silicone can’t be painted. Let us know beforehand, and we will use a paintable product where it suits.
Do you hold any approvals?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
Is there any odour?
It depends on the product. Some smell for a while, some hardly at all, and any smell fades as they cure.
Is the work guaranteed?
Yes, for 12 months. A yearly look at the joints helps them last.
How we handle window mastic in Charlton
Frames and walls don’t move together. Heat and cold make frames grow and shrink against brick or render that hardly moves. That’s why the joint needs a flexible, low-modulus sealant rather than something rigid. We work on window sills, aluminium frames and timber windows & doors, and people most often call us about cracked or shrunken mastic around the frame and draughty joints inside around the window.
Mastic can only go onto a dry, clean joint, so window work in Charlton is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
Each job carries a 12-month guarantee, whatever its size.
- Where
- Charlton (SP10)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Why deal with it now?
Draughts and leaks don’t always mean new windows. If the frames and glass are in good order, resealing the joints is often all that’s needed. Problems with the glass or gaskets are for a window company, and we’ll say so. Older cottages and farmhouses around Charlton can have timber floors and frames, and water through a failed joint can rot timber 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, and we will explain the quote if you ask.
Why choose Mr Mastic in Charlton
- Domestic, commercial and hotel work
- Trusted Arbo and Everbuild sealants
- We leave the area clean and tidy
- One-year guarantee on every job
Places near Charlton
What else we do in Charlton
How the job changes by surface
Composite doors
An exposed front door gets wind-driven rain, and the top and bottom corners tend to fail first. Those corners get the most care.
uPVC windows
The frame is cleaned with a product that won’t harm the plastic, then the new bead is laid against the frame and the wall and tooled smooth.
What affects the cost of window mastic
The quote reflects the job in front of us. We look at:
- The type of sealant required
- Whether old sealant or filler has to be cut out
- Any working-time requirements on site
- Access and height
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
Asking for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- The type of property
- The problem you’ve noticed
- How many joints, rooms or windows are involved
- Any previous sealing or DIY work
Asking for a quote is easy: tell us what needs doing and where. A few photos by email make the job easier to understand, and we will take it from there.
What we do, step by step
Good joint work is mostly preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes a morning for a couple of windows and a door. Somewhere as small as Charlton, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by checking each window and door with you.
- We remove the old mastic and clean the frame and the wall.
- Where gaps are deep, backing rod goes in first.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Finally we tidy up and check each joint.
Preparing for the visit
- Let us know if you’ve seen damp or leaks
- Mention any parking rules near the property
- Keep pets and children clear of the area while we work
Getting a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
Advice
Charlton 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.
Managing a site like Harrow Way Community School? Then its window and door frames need their mastic kept sound, just like a home’s. For landlords with property near Andover station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Charlton is about 1 mile north-west of Andover, in Hampshire. If you need window mastic in Charlton, please phone 0345 464 0079 or drop us an email for a quick quote. We cover Hampshire from our Crawley base, Charlton included. We cover 683 towns and villages across Hampshire, from the larger towns to small villages. We also work in Southampton, around 22 miles away.
We cover every part of SP10 for window mastic and the streets around it. We cover properties on Dacre Close, Home Farm Gardens and Augustine Way and the roads around them. We also cover the places around Charlton: Foxcotte (1 mile north-west), Penton Mewsey (1 mile west), Penton Corner (1 mile west), Penton Grafton (1 mile west) and Red Post Bridge (2 miles south-west). Further out, we also cover Winchester (14 miles south-east), Hyde (13 miles south-east), Tidworth (7 miles west), Weeke (13 miles south-east), Stanmore (14 miles south-east) and Ludgershall (6 miles north-west).
Near you in Charlton
Around Charlton, our work takes us to homes and buildings near Portway Infant School. The nearest railway station is Andover station, about 0.8 miles south-east. A little further out are Andover War Memorial Hospital (0.5 miles south-east) and Andover Museum (1.3 miles south-east). The countryside around Charlton includes Anton Lakes and Mill Lake.
Do you need window mastic in Charlton?
Mastic ages in the weather. Sunlight dries the surface out, and over the years it loses its give, cracks and comes away.
Keep an eye out for any of the following:
- Cracked sealant at the sill ends
- Hard, cracked sealant around windows
- Gaps left after new windows were fitted
- Draughty joints inside around the window
In the older streets around St Thomas, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Before you book anyone
- How much experience the applicator has
- What the quote includes, VAT included or not
- How long the guarantee is
- What preparation is included
For landlords and businesses
Hotels need rooms back in use, so we plan the work room by room. We’ve worked in hotels as well as homes and businesses.
We also work for property managers and facilities teams in Charlton and across Hampshire. Several sites can be quoted together, and we’re fully insured.
Honest limits
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Draughts through the window seals rather than the frame
- A failed sealed unit that has misted up
- A sash or casement that won’t close properly
If you are not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer.
Joints and surfaces we work on
- Aluminium frames
- Timber windows & doors
- Window sills
- uPVC windows
- Patio & French doors
- Composite doors