Hampshire · England
Leagreen Window Mastic
Window mastic for Leagreen, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Draughty joints inside around the window
- Hard, cracked sealant around windows
- White mastic on grey or black frames
The process
Most of a good job is in the preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. In total, it normally takes most of a day for a typical house, less for a few frames. Somewhere like Leagreen needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We check each frame and agree which ones need doing.
- We remove the old mastic and clean the frame and the wall.
- We fit backing rod in deep gaps so the sealant is the right depth.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- Every joint is checked before we leave.
How to prepare
- Let us know about earlier repairs to the joints
- Let us know about stairs, lifts or work at height
- Where the joints are inside, avoid wetting them before we arrive
Get a quote
We quote each job on its own. Just call 0345 464 0079 or send us an email with the details and send photos if you have them.
Related advice
Window mastic in Leagreen, done properly
The new joint does not have to be white. We can seal in white, brown, anthracite grey, black or clear, so the line suits the frame instead of standing out. If you have mastic that has split away from the wall and white mastic on grey or black frames, we can put it right, whatever the surface.
Outdoor sealant needs dry, clean surfaces, so work on frames around Leagreen is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Where
- Leagreen (SO41)
- Region
- Hampshire
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Common questions in Leagreen
Do you cover smaller places like Leagreen?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you help a landlord with a rental near New Milton station?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear price.
Is there any odour?
It depends on the product. Some products have a noticeable smell, others very little.
How long before the joint can be used?
Most sealants are touch-dry well before they’re fully cured. We will tell you how long to leave the joint before we leave.
Are you ARBOMaster approved?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Do I need to be at home?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Will you leave a mess?
Tidy work is part of the job. We protect what’s around the joints, and the area is left clean when we finish.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Landlord and commercial work in Leagreen
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
We work for landlords and agents as well as householders. Sealant work between tenants keeps a property looking cared for before the next move-in.
Nearby places to Leagreen
Other services in Leagreen
What we’re called out for in Leagreen
Older frames were often sealed with products that set hard. Once it has hardened, the frame’s movement tears it from the wall, and a gap opens along one edge.
The problems people generally mention when they call are:
- Old mastic that has gone black or come away
- Leaking joints at the ends of sills
- Whistling draughts around closed windows
- Gaps left after new windows were fitted
For landlords with property near New Milton station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Comparing quotes
- Whether they seal over old material or remove it
- Whether VAT is included
- Which colour the sealant will be
- Are they insured?
Leagreen homes and the weather
Leagreen is within about 1 mile of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on the mastic around window and door frames, which can dry out and crack sooner where a building faces the weather. Historic houses like Highcliffe Castle (about 4.5 miles west) are a reminder that the area around Leagreen 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.
Homes close to Church of All Saints include some older properties, and the joint between an old wall and a newer frame is generally the first place rain gets in. If you look after a building such as Hordle CofE (VA) Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Leagreen is about 3 miles west of Lymington, in Hampshire. Wherever you are in the SO41 postcode area, we cover window mastic for homes and businesses. Across Hampshire, we cover 683 places, Leagreen among them. Our Southampton page covers work nearby, about 15 miles away.
All of SO41 is covered for window mastic, from the main roads to the quietest streets. We also cover Downton (1 mile west), Hordle (1 mile north), Ashley (2 miles north-west), New Milton (2 miles north-west) and Barton on Sea (2 miles west). We also work in nearby towns such as Totton (13 miles north), Lymington (3 miles east), Hythe (12 miles north-east), Ringwood (10 miles north-west), Dibden Purlieu (12 miles north-east) and Marchwood (13 miles north-east).
Around Leagreen
We work in homes and buildings around The Arnewood School and the streets around them. For rail, the closest station is New Milton station, roughly 2.2 miles north-west. Nearby you will also find Lymington New Forest Hospital (3.5 miles north-east) and Sammy Miller Motorcycle Museum (3.1 miles north-west). Open spaces near Leagreen include Milford on Sea LNR.
Different surfaces, different methods
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.
Aluminium frames
Bi-fold and sliding aluminium doors have long frame joints, and the bottom joint sees the most water. Each is cleaned, backed where deep and resealed.
Looking after it afterwards
Looking after new joints is easy:
- Keep timber frames painted
- Wash the frames with mild soapy water
- Don’t use solvent cleaners on the joint
- Air rooms to keep condensation down around windows
Try not to touch the new joint while it cures, for as long as we advise. Keep jet washers away from the frames.
Draughts get worse, not better. As old mastic keeps shrinking, the gap widens, and a cold room gets colder. A new joint closes it up.
Leave it or put it right?
The work is quick compared with the damage it prevents: the visit takes a few hours for a handful of frames, longer for a whole house. Leave it until water is coming in and you may need plastering and decorating as well. Where a wall is exposed, as many are in small places like Leagreen, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
The cost depends on the amount of work, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
Why us?
- Full insurance on every job
- We agree the colour with you first
- Arbo and Everbuild products
- Homes, businesses and hotels
Read what affects the cost and our reviews.
What affects the cost of window mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- The number and length of the joints
- How many areas need sealing
- The product the joint needs
- Whether there’s mould to deal with
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.
What we need to know
When you call or email, these details help:
- If someone has resealed it before
- Access, such as stairs, a lift or height
- What’s wrong with the joints now
- The rough size of the job
Getting a quote is simple: tell us what needs doing and where and its rough size. Photos by email help us understand the job, and we’ll take it from there.