Hampshire · England
Window Mastic in Chandler's Ford
Problem with your window and door frames in Chandler's Ford? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- A bead that does not match the frame
- Water coming in at the bottom corners of a door
- Cracked or shrunken mastic around the frame
Window mastic in Chandler's Ford, done properly
If you can feel air around a shut window, the gap is often at the frame. A new joint stops the air getting through. Where the air is getting in through the window itself, we will say so. Common call-outs are for hard, cracked sealant around windows and whistling draughts around closed windows, across composite doors, window sills and uPVC windows.
Chandler's Ford mixes older streets, where windows have often been replaced, with newer estates fitted with uPVC. All of them depend on a sound bead of mastic between frame and wall.
Whatever the size of the job, it’s backed by our one-year guarantee in Chandler's Ford and across Hampshire.
- Where
- Chandler's Ford (SO53, SO51, SO52)
- Region
- Hampshire
- Guarantee
- 12 months on all our work
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What we do, step by step
All our tools and materials come with us in the van. After a quick look at the joints together, the area is protected and the work begins. Most jobs take a few hours for a handful of frames, longer for a whole house. In Chandler's Ford, parking is rarely complicated, though it helps to know about driveways or restrictions, and mention if the work is upstairs, in a flat or high on the outside.
- 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.
- The joint is shaped to shed water and the area tidied.
Before we arrive
- Mention any sign-in or site rules at work premises
- Keep children and pets away from the work area
- Clear items away from the joints we are working on
How to get a quote
We quote each job on its own, so the first step is telling us about yours. Simply phone 0345 464 0079 or drop us an email and describe the job and send pictures if you have them.
Advice
Towns and villages near Chandler's Ford
Also in Chandler's Ford
What window mastic looks like in Chandler's Ford
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as South Stoneham House (about 3.4 miles south) nearby, there’s older building stock in the area around Chandler's Ford as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
Letting a property close to Chandlers Ford station? Then sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. For an older house near a landmark such as St Boniface, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Chandler's Ford is about 5 miles north of Southampton, in Hampshire. Every kind of property in Chandler's Ford is covered for window mastic. Every job comes with our 12-month guarantee. Our Hampshire coverage runs to 683 places, Chandler's Ford among them.
Every address in SO53, SO51 and SO52 is covered for window mastic, from the main roads to the quietest streets. Window mastic is available to properties on Kerry Close, Prospect Place and Sutherlands Court and the roads around them. You will find Chandler's Ford on the B3043, which makes it straightforward to reach with everything needed for window mastic. Other places close to Chandler's Ford include Hiltingbury (1 mile north), Boyatt Wood (1 mile east), Allbrook (1 mile east), North Stoneham (2 miles south) and Eastleigh (2 miles south-east). Further out, we also cover Winchester (6 miles north-east), Fareham (12 miles south-east), Totton (7 miles south-west), Hedge End (6 miles south-east), Romsey (4 miles west) and Hythe (9 miles south).
Local landmarks in Chandler's Ford
Typical jobs here are in homes near Toynbee School and Thornden School. Chandler's Ford has its own railway station: Chandlers Ford station. Well-known places in the area include Princess Anne Hospital (4 miles south-west) and Eastleigh Museum (1.9 miles south-east). The countryside around Chandler's Ford includes Flexford Nature Reserve.
Your questions about window mastic in Chandler's Ford
Can you help a landlord with a rental near Chandlers Ford station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll give you a clear price.
Can you do window mastic in Chandler's Ford?
Yes, Chandler's Ford is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or email us and tell us what needs doing.
Do I need to be at home?
That depends on where the joints are. For work indoors, someone needs to let us in, and for outside work we will agree access with you when we book.
Do you seal inside as well as outside?
Yes. Plenty of draughts come through the inside joint as well as the outside, so sealing both is often worthwhile.
Where is Mr Mastic based?
We’re a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
Can you work on commercial sites?
Yes, regularly. We can plan bigger jobs in stages.
Will there be a smell?
There can be a smell while the sealant cures, which fades as it sets. Ventilation helps.
What sealant do you use?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
When to call us in Chandler's Ford
Mastic ages in the weather. Sunlight dries the surface out, and over the years it loses its give, cracks and comes away.
Look out for any of the following:
- Rushed sealant from a window installation
- Gaps where the sill meets the wall
- Cold air getting in at the frame edge
- Old mastic that has gone black or come away
Managing a site like Chandler's Ford Infant School? Then its window and door frames need their mastic kept sound, just like a home’s.
Comparing quotes
- Whether VAT is included
- Whether you can choose the colour
- What insurance they hold
- Whether all the old sealant comes out first
How the job changes by surface
Aluminium frames
Aluminium needs a sealant that bonds to coated metal and we avoid acetoxy silicones, which can react with some metals. We use a neutral-cure product.
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.
Why deal with it now?
Running fresh sealant over the old joint is tempting, but new sealant can’t bond to old, crumbling mastic. It peels before long, and water still gets in behind. Proper resealing starts with removing the old joint. Around Chandler's Ford, failed sealant lets water into hidden places, such as under the floor, behind a panel or into a wall. Left alone, that means rot, damp and a bigger repair.
The cost reflects the work involved, not a rough estimate. That is why we ask about the job first.
Why choose Mr Mastic in Chandler's Ford
- You choose the colour before work begins
- Quality sealants from Arbo and Everbuild
- Every job guaranteed for a year
- Homes, businesses and hotels
Keeping the joints in good condition
After the cure time, these simple habits help:
- Paint up to the joint, not over it
- Air rooms to keep condensation down around windows
- Keep drainage slots and sill grooves clear
- Keep paint and stain on wooden frames in good order
A yearly look round the frames is enough. Small splits are simple to catch before they leak.
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.
What affects the quote in Chandler's Ford
You’ll get a clear quote before work begins. It’s based on:
- How much there is to do
- How much old sealant there is and how hard it is to remove
- Any mould that needs treating
- When we can work, for business premises
Doing several joints on one visit is generally more efficient than separate visits. We will give you a clear quote for the lot.
What to tell us for a quote
To make quoting easier, please include:
- Roughly how big the job is
- How we’d reach the joints
- The type of property
- The problem you’ve noticed
For a quote, ring 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We’ll give you a clear quote before any work starts.
When it isn’t the sealant
We’ll always be straight with you, so here’s what new sealant will not do:
- Draughts through the window seals rather than the frame
- Rotten timber, which needs a joiner first
- Penetrating damp from a failed cavity tray or render
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think before you book.
What we seal
- uPVC windows
- Timber windows & doors
- Composite doors
- Window sills
- Patio & French doors
- Aluminium frames