Hampshire · England
Window & door mastic in Greatham, Hampshire
Mastic around window and door frames, sills and patio doors for homes and businesses in Greatham and across Hampshire. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Gaps between the frame and the inside reveal
- A bead that does not match the frame
- Untidy mastic left by window fitters
Window mastic for homes and businesses in Greatham
The new joint doesn’t have to be white. White, brown, anthracite grey, black and clear sealants are all available, so the bead blends with the window rather than framing it. If you are dealing with a bead that doesn’t match the frame and mastic that has split away from the wall, we can help, on window sills, patio & French doors and timber windows & doors alike.
Homes in small places like Greatham often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
The work is covered for a year after we finish. If there’s a problem with it, please ring 0345 464 0079 or drop us an email.
- Place
- Greatham (GU33)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What affects the quote in Greatham
The price is agreed before any work begins. It’s based on:
- Which sealant suits the joint
- How easy the joints are to reach
- Working hours on commercial sites
- Whether there’s mould to deal with
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, along with when we can work on site. Call for a quick quote and we will explain what it covers.
Helping us quote
Photos by email are helpful but not essential. Please mention:
- Pictures of the joints, sent by email
- The type of property
- Any access issues, like height or stairs
- Where the property is
For a quick quote, get us on the phone, or email us if that is easier. Tell us about the joints that need doing and we’ll talk you through the work.
Common questions in Greatham
I let a flat near Liss station. Can you help?
Yes, landlords and agents are among the people we work for. You can phone 0345 464 0079 or email us with the details for a clear quote.
Is Greatham in your area for window mastic?
Yes. We work across London and the South East, and Greatham is part of that. You can phone 0345 464 0079 or send us an email and let us know what needs doing.
Where is Mr Mastic based?
We are based in Crawley, and we cover South East England, London and all of Scotland.
Do I need to be at home?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Can you quote for more than one area?
Yes. Tell us about everything you’d like done.
When is the sealant fully cured?
Different products cure at different speeds, so follow the cure time we give you when we finish.
Can new window sealant be painted?
Not if it’s silicone. We choose the product with your decorating in mind, so mention it when you book.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We’ll tell you what we are using and why.
Surface by surface
uPVC windows
The frame is cleaned with a product that will not harm the plastic, then the new bead is laid against the frame and the wall.
Timber windows & doors
Where timber has rotted at the joint, it needs repairing first. If we find rot, we’ll tell you before going ahead, as that’s a job for a joiner.
Leave it or put it right?
A cracked joint around a frame lets rain into the wall. Over time that can mean damp patches, damaged plaster and rotting timber. A reseal is a much smaller job. Where a wall is exposed, as many are in small places like Greatham, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why Greatham clients choose us
- Approved under the ARBOMaster scheme
- Over 20 years’ experience
- Any old sealant cut out fully, not covered over
- Colour agreed with you before work begins
Read how sealant jobs are priced and our reviews.
How the visit works
We bring everything the job needs with us. After a quick look at the joints together, we protect the area and start. Most jobs take a few hours for a few frames, or a day or more for a whole house. Somewhere as small as Greatham, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely.
- Frame and wall are cleaned and must be dry before sealing, and primed where the sealant calls for it.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
Preparing for the visit
- Mention if the joints have been sealed before
- Keep pets and children clear of the area while we work
- Mention any parking rules near the property
Getting a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
Related advice
For landlords and businesses
Hotels need rooms back in use, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
We work for landlords and letting agents as well as householders. Resealing between tenancies is a simple way to keep a property in good order.
Also near Greatham
What else we do in Greatham
DIY sealant or a professional job?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Windows and doors in Greatham
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Letting a property close to Liss station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. In the older streets around Church of St John the Baptist, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Greatham is about 5 miles north-east of Petersfield, in Hampshire. We provide window mastic to householders, landlords and businesses in Greatham and nearby, as part of our work across Hampshire. We cover 683 towns and villages across Hampshire. There’s also a page for Portsmouth, about 20 miles away.
Work in GU33 is quoted and booked the same way as anywhere else. If you need window mastic at a property on Longmoor Road, Wolfmere Lane and Todmore or a nearby road, our applicators can take on the job. Other places close to Greatham include Longmoor (1 mile east), Woolmer (1 mile north), Liss Forest (1 mile south), Blackmoor (1 mile north) and The Mint (2 miles south). Larger places within reach include Havant (15 miles south), Fleet (14 miles north), Horndean (13 miles south-west), Aldershot (13 miles north-east), Alton (7 miles north-west) and Waterlooville (15 miles south-west).
What’s near Greatham
Greatham’s nearest station is Liss station, about 2 miles south of the centre. Other landmarks nearby include The Romany Museum (2.9 miles north-west) and Chase Community Hospital (2.5 miles north-east). Open spaces near Greatham include Liss Riverside Railway Walk North and Selborne Hill.
When to call us in Greatham
A lot of older mastic was never designed to stay flexible. Once it has hardened, the frame’s movement tears it from the wall, and a gap opens along one edge.
Signs it’s time to call us include:
- Mastic that’s falling out in pieces
- Gaps where the sill meets the wall
- Mastic that has split away from the wall
- Draughty joints inside around the window
Schools such as Greatham Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
What your quote should include
- Which sealant they’ll use, and why
- Who does the work, and how experienced they are
- How the joint is cleaned and prepared
- When the joint can take water or movement