Hampshire · England
Window & door mastic in Lower Green, Hampshire
Problem with your window and door frames in Lower Green? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Old mastic that has gone black or come away
- Untidy mastic left by window fitters
- Cracked internal joints between frame and plaster
Window mastic for homes and businesses in Lower Green
Over two decades of sealing frames has taught us which products suit which walls. We’re fully insured ARBOMaster approved applicators, and we give a 12-month guarantee on the work. Typical jobs include untidy mastic left by window fitters and gaps where the sill meets the wall, on uPVC windows, patio & French doors and aluminium frames.
Mastic can only go onto a dry, clean joint, so window work in Lower Green is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Location
- Lower Green (GU33)
- Region
- Hampshire
- Guarantee
- One year on every job
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
DIY sealant or a professional job?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
If you manage several properties in or around Lower Green, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and photos by email help.
Common questions in Lower Green
Do you work for landlords with property near Liss station?
Yes. We work for landlords and letting agents as well as homeowners. Just phone 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear price.
Is Lower Green within the area you cover?
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.
Do you have insurance?
Yes. We are fully insured for domestic and commercial work.
Do you hold any approvals?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Where is Mr Mastic based?
We are based in Crawley, and we cover South East England, London and all of Scotland.
Can I paint over the new sealant?
It depends on the sealant. Some hybrid sealants can be painted; silicone can’t. Mention any painting plans before we start.
Can you seal over the old sealant?
No. Fresh sealant doesn’t stick to old sealant, and it traps any mould or water underneath. It all has to come out first.
How do I get a quote for window mastic in Lower Green?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Why it’s worth doing now in Lower Green
A quick bead over the top of old mastic looks like an easy fix, but new sealant can’t bond to old, crumbling mastic. It soon lifts and the leak carries on behind it. The old mastic has to come out. Around Lower Green, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Doing several joints on one visit is usually more efficient than separate visits, so tell us about everything that needs sealing. You’ll get one clear quote for the whole job.
Why us?
- White, clear, grey or another colour, product permitting
- More than 20 years in sealant work
- Fully insured
- Colour agreed with you before any work starts
See our cost guide and what customers say.
How the visit works
There is not much for you to do on the day. Show us the job and we’ll take it from there. The work itself takes most of a day for a typical house, less for a few frames. Somewhere as small as Lower Green, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check how each frame can be reached safely.
- Old, cracked mastic is removed completely.
- Frame and wall are cleaned and must be dry before sealing.
- Deep voids are backed, then the sealant is gunned in.
- The joint is shaped to shed water and the area tidied.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Tell us about any water getting in
- For indoor joints, keep the area dry beforehand if you can
Getting a quote
For a quote, call 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You will have a clear quote before we start.
Advice
Window mastic in Lower Green: local notes
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Homes close to Church of St Peter and St Paul include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in. For landlords with property near Liss station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Lower Green is about 4 miles north of Petersfield, in Hampshire. Every kind of property in Lower Green is covered for window mastic. Every job comes with our one-year guarantee. We cover 683 towns and villages across Hampshire. There’s also a page for Portsmouth, roughly 19 miles from Lower Green.
All of GU33 is within our area for window mastic, from the main roads to the quietest streets. We also cover Hawkley (1 mile south), Oakshott (1 mile south), Empshott (1 mile north-east), Steep Marsh (2 miles south) and Selborne (3 miles north). Within a short drive, we also cover Havant (14 miles south), Fleet (15 miles north), Horndean (11 miles south), Aldershot (15 miles north-east), Alton (6 miles north) and Waterlooville (13 miles south).
Local landmarks in Lower Green
We work in homes and buildings around Hawkley Inn, among other places. For rail, the closest station is Liss station, about 2.3 miles south-east of the centre. Well-known places in the area include The Romany Museum (2.3 miles north) and Petersfield Community Hospital (4.1 miles south). The countryside around Lower Green includes Goleigh Hill and Liss Riverside Railway Walk North.
Quotes for window mastic in Lower Green
For a quick quote, just ask. The main things that affect it are:
- Whether the work is at height
- The old material and how stubborn it is
- When we can work, for business premises
- Which sealant suits the joint
A failed joint rarely gets cheaper to fix by waiting. If you are unsure, ring 0345 464 0079 or email us for an honest opinion and a quote.
Asking for a quote
When you contact us, it’s useful to know:
- Whether it’s a home or a business
- Whether it has been sealed before
- Pictures of the joints, sent by email
- The problem you’ve noticed
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
Looking after it afterwards
So the new joints stay in good condition:
- Avoid blasting the frames with a pressure washer
- Paint up to the joint, not over it
- Look round the frames every year or so
- Repaint timber before it’s bare
On timber frames, keep the paintwork in good order, because bare, wet timber moves more and pulls at the joint. Paint up to the joint, not over the silicone.
Water gets in quietly when mastic fails. Often the first sign is a damp patch inside or flaking paint on the reveal. Early resealing stops it reaching that point.
Nearby places to Lower Green
Other services in Lower Green
Honest limits
Sealant isn’t the answer to every problem, and we’ll tell you before we start. Sealant will not put right:
- A failed sealed unit that has misted up
- Draughts through the window seals rather than the frame
- Penetrating damp from a failed cavity tray or render
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly.
Surfaces we seal
- Patio & French doors
- uPVC windows
- Timber windows & doors
- Composite doors
- Window sills
- Aluminium frames