Hampshire · England
Window Mastic in The Frenches
Mastic around window and door frames, sills and patio doors for homes and businesses in The Frenches and across Hampshire. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Whistling draughts around closed windows
- Rain getting in at the frame or under the sill
- Mastic that is falling out in pieces
Window mastic in The Frenches
The mastic around a window or door seals the gap between the frame and the wall. Once that seal fails, wind and rain find the gap. Our applicators cut it out and replace it with a flexible, weatherproof sealant. If you’re dealing with gaps left after new windows were fitted and mastic that’s falling out in pieces, we can help, on composite doors, uPVC windows and timber windows & doors alike.
Homes in small places like The Frenches often stand in the open, with little to shelter their windows from wind and rain. Exposed frames and sills lose their mastic sooner than sheltered ones.
You are covered for a year from the day we finish. If anything is not right with it, ring 0345 464 0079 or email us.
- Where
- The Frenches (SO51)
- Wider area
- Hampshire
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Leave it or put it right?
Resealing frames is a short job: the visit takes anything from an hour or two to a full day, depending on how many frames there are. Leave it until water is coming in and you may need plastering and decorating as well. Around The Frenches, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we will explain the quote if you ask.
Why book with us
- Old sealant always removed completely
- You choose the colour before work begins
- Neat joints and a tidy finish
- Homes, businesses and hotels
Take a look at what affects the cost or customer reviews.
How it works
On the day, we start by going over the job with you, so you know exactly what we’re doing. We protect the surfaces around the joints before any work starts. The work generally takes a morning for a couple of windows and a door. Somewhere like The Frenches needs a little journey planning: 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 start by checking each window and door with you.
- The old mastic is cut out and the surfaces cleaned back.
- Where gaps are deep, backing rod goes in first.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- Finally we tidy up and check each joint.
Before we arrive
- Let us know if you’ve seen damp or leaks
- Mention if the joints have been sealed before
- Clear the area around the work
Get a quote
There’s no standard price list. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or drop us an email.
Advice
Windows and doors in The Frenches
Historic houses like Mottisfont Abbey (about 3.1 miles north) are a reminder that the area around The Frenches has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Homes close to Church of All Saints include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame.
The Frenches is about 3 miles west of Romsey, in Hampshire. The Frenches gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. 683 places in Hampshire are on our list, from the larger towns to small villages. Southampton is on our list too, about 9 miles from The Frenches.
Jobs for window mastic in SO51 works the same way as everywhere else we cover. We also cover the places around The Frenches: Shootash (1 mile east), Plaitford Green (2 miles west), West Wellow (2 miles south-west), East Wellow (2 miles south) and Blackhill (3 miles south). Further out, we also cover Winchester (11 miles east), Eastleigh (10 miles east), Andover (15 miles north), Totton (6 miles south-east), Chandler's Ford (8 miles east) and Hedge End (13 miles south-east).
Local landmarks in The Frenches
The Frenches’s nearest station is Mottisfont & Dunbridge station, roughly 2.5 miles north of the centre. Well-known places in the area include King Johns House (2.7 miles east) and Romsey Community Hospital (3.4 miles east). Green spaces nearby include Copythorne Common.
Looking after it afterwards
A little care helps the new joints last. Our advice:
- Use gentle cleaners on frames and sealant
- Make sure the drainage slots aren’t blocked
- Wipe condensation off the frames
- Paint up to the joint, not over it
Most silicone sealants won’t take paint, so if you’re planning to paint the frames or walls, tell us beforehand. There are paintable sealants for joints that need it.
A failed joint lets water into the wall a little at a time. You might not see it until plaster blows or a damp patch appears inside. Catching it early keeps the fix to a reseal.
Surface by surface
Aluminium frames
Aluminium needs a sealant that bonds to coated metal, and acetoxy silicones aren’t used, as they can attack some metals. Neutral-cure sealant is the safe choice.
Composite doors
An exposed front door gets wind-driven rain, and the top and bottom corners tend to fail first. We pay most attention there.
Do you need window mastic in The Frenches?
Every frame moves through the day. Sun on a frame makes it expand, and it contracts again overnight, while the masonry beside it stays put. If the sealant cannot stretch, it splits.
Most people get in touch after spotting one of these:
- Gaps left after new windows were fitted
- Mastic that has split away from the wall
- Water coming in at the bottom corners of a door
- A bead that doesn’t match the frame
If you let a flat or house near Mottisfont & Dunbridge station, renewing tired window mastic between tenants heads off draught and damp complaints.
What to look for in a quote
- How the joint is cleaned and prepared
- The length of the guarantee
- Whether all the old sealant comes out first
- Whether VAT is included
Nearby places to The Frenches
More services for The Frenches
The Frenches: your questions answered
Can you do window mastic in The Frenches?
Yes, The Frenches is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or drop us an email and let us know what needs doing, and we’ll send you a clear quote.
Do you work for landlords with property near Mottisfont & Dunbridge station?
Yes. We work for landlords and agents as well as householders. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Will new mastic stop draughts?
Yes, where the draught is at the frame edge. We check where the draught is before any work starts.
Will it make a mess?
Tidy work is part of the job. We protect what’s around the joints.
Do you hold any approvals?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
When is the sealant fully cured?
That depends on the sealant used, so follow the cure time we give you when we finish.
Can you do the inside joint as well?
Yes. Outside is the weather seal; inside closes the gap to the plaster. We can do either or both.
What information do you need?
Let us know what needs doing and where, plus pictures if you have them. We will ask anything else we need to know.
Landlords, agents and businesses in The Frenches
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
If you manage several properties in or around The Frenches, several properties can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.
DIY versus a professional finish
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so just mention it when you contact us.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.