Hampshire · England
Window & door mastic in Leckford, Hampshire
Window mastic for Leckford, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Cold air getting in at the frame edge
- Old mastic that has gone black or come away
- White mastic on grey or black frames
Window mastic in Leckford
A cold draught around a closed window often comes from the frame edge. Resealing that joint can make a room feel noticeably less draughty. If the draught is through the window seals instead, we’ll tell you. If you’re dealing with old mastic that has gone black or come away and hard, cracked sealant around windows, we can help, whatever the surface.
Outdoor sealant needs dry, clean surfaces, so work on frames around Leckford is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
Each job carries a 12-month guarantee.
- Where
- Leckford (SO20)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Quote
- A clear price before we start
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
How it works
Good joint work is mostly preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes anything from an hour or two to a full day, depending on how many frames there are. Somewhere like Leckford needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. 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.
- Next the failed sealant is cut away and the joint cleaned.
- 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
- Plan for the work area to be out of bounds to pets and children
- Let us know if you’ve seen damp or leaks
- Mention if the joints have been sealed before
How to get a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we’ll explain how we’d tackle it. When it suits you, call 0345 464 0079 or email us.
Related advice
Common questions in Leckford
Do you cover smaller places like Leckford?
Yes. Leckford is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you do window mastic in Leckford?
Yes. Our work covers London and the South East, and Leckford is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we’ll give you a clear quote.
Does the work come with a guarantee?
Yes. Each job is covered for 12 months.
Can you seal the gap between the frame and the plaster indoors?
Yes. Plenty of draughts come through the inside joint as well as the outside, so sealing both is often worthwhile.
Do I have to be there?
That depends on where the joints are. Inside work needs someone to give us access.
Can I add another job to the visit?
Yes, and it often makes sense. Doing several areas at once is normally more efficient.
What do you need from me for a quote?
Just the basics: where it is, what you’ve noticed and how we reach it. Then phone 0345 464 0079 or send us an email.
Can you reach windows above the ground floor?
Yes, where they can be reached safely. Tell us about access when you get in touch and we’ll plan for it.
How the job changes by surface
Patio & French doors
The joints around patio doors run a long way, top, sides and threshold. The threshold and the bottom corners take the most water, so they get particular care.
Composite doors
Composite doors are normally hung in an uPVC-type frame, and the joint around it is sealed like a window. The bead is colour-matched to the frame.
How to look after the new joints
Joint life depends on how it’s used and looked after. We suggest:
- Repaint timber before it’s bare
- Ventilate rooms so frames don’t stay wet inside
- Make sure the drainage slots aren’t blocked
- Use gentle cleaners on frames and sealant
Most silicone sealants won’t take paint, so mention any painting plans before any work starts. We can use a paintable sealant where that matters.
Signs to watch for: split or missing mastic, gaps, damp patches inside or black mould on the reveal. If you notice one, it’s time to get the joint looked at.
Also near Leckford
What else we do in Leckford
What affects the cost of window mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- How many areas need sealing
- Mould in or behind the old joints
- How much old sealant there is and how hard it is to remove
- Working hours on commercial sites
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
Helping us quote
Before you ask for a quote, have a think about:
- Access, such as stairs, a lift or height
- How many joints, rooms or windows are involved
- If someone has resealed it before
- Photos by email, if that’s easy
If you’re in Leckford and need window mastic, phone 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Common problems we fix in Leckford
Sun, frost and rain wear sealant out. UV light hardens the outside of the bead, until it loses its stretch and starts to crack.
Any of these means the joints need attention:
- Whistling draughts around closed windows
- Untidy mastic left by window fitters
- Hard, cracked sealant around windows
- Gaps where the sill meets the wall
If you live in an older home near Church of St Nicholas, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Questions to ask before booking
- Whether the sealant suits the joint
- Whether VAT is included
- How the colour is chosen
- How the joint is cleaned and prepared
Frames and glazing around Leckford
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.
Schools such as Test Valley School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Leckford is about 5 miles south of Andover, in Hampshire. Every kind of property in Leckford can book us for window mastic. Every job comes with our 12-month guarantee. 683 places in Hampshire are on our list, from the larger towns to small villages. Our Southampton page covers work nearby, about 15 miles away.
Jobs for window mastic in SO20 works the same way as everywhere else we cover. Close by, we work in Longstock (1 mile west), Fullerton (1 mile north), Cottonworth (1 mile north), Chilbolton (2 miles north-east) and Stockbridge (2 miles south-west). Within a short drive, we also cover Winchester (8 miles south-east), Eastleigh (13 miles south-east), Andover (5 miles north), Totton (15 miles south), Chandler's Ford (11 miles south) and Romsey (10 miles south).
Landmarks near Leckford
In Leckford, that means homes and buildings near The Peat Spade Public House and Longstock Park and the streets around them. Nearby you’ll also find Andover War Memorial Hospital (5.6 miles north). Not far away are Mill Lake.
What we can’t put right
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Worn gaskets, brush seals or a door that has dropped
- A sash or casement that will not close properly
- Damp problems in the wall away from the window
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly before booking.
What we seal
- uPVC windows
- Patio & French doors
- Window sills
- Aluminium frames
- Timber windows & doors
- Composite doors
DIY sealant or a professional job?
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.