Hampshire · England
Window & door mastic in Nob's Crook, Hampshire
Our applicators work in Nob's Crook on mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly.
- Gaps between the frame and the inside reveal
- Gaps left after new windows were fitted
- Sealant in the wrong colour for the frame
Honest limits
We won’t take on work that will not last, so here’s what sealant can’t put right:
- Penetrating damp from a failed cavity tray or render
- A failed sealed unit that has misted up
- A sash or casement that will not close properly
Not sure which it is? You can call 0345 464 0079 or drop us an email and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Composite doors
- Aluminium frames
- uPVC windows
- Window sills
- Patio & French doors
- Timber windows & doors
Window mastic in Nob's Crook
Homes in Nob's Crook have every kind of window: from uPVC casements to timber and aluminium, plus patio doors, French doors and sills. The sealant is chosen to suit the frame material and the wall. Common call-outs are for cracked sealant at the sill ends and mastic that’s falling out in pieces, across aluminium frames, composite doors and uPVC windows.
Somewhere as small as Nob's Crook, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
The work is covered for a year after we finish. If there’s a problem with it, please phone 0345 464 0079 or send us an email.
- Place
- Nob's Crook (SO21)
- Region
- Hampshire
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Places near Nob's Crook
More services for Nob's Crook
Aftercare tips
So the new joints stay in good condition:
- Check the mastic once a year
- Keep paint off silicone joints
- Clean frames with a soft cloth and soapy water
- Air rooms to keep condensation down around windows
Have a look at the joints once a year, ideally after winter. Cracks and lifting edges are easy to spot early.
Water gets in quietly when mastic fails. You might not see it until plaster blows or a damp patch appears inside. Catching it early keeps the fix to a reseal.
The process
You do not need to clear the whole room or building, just the space around the work. Everything nearby is protected, and the work takes a few hours for a handful of frames, longer for a whole house in most cases. In a small place like Nob's Crook, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Finally we tidy up and check each joint.
Before we arrive
- Tell us if parking is tricky
- Mention if the joints have been sealed before
- Tell us about access, such as stairs, a lift or high-level joints
Ask for a quote
Asking for a quote is easy: let us know what needs doing and where. A few photos by email make the job easier to understand.
Advice
Common questions in Nob's Crook
Can you do window mastic in Nob's Crook?
Yes, Nob's Crook is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or email us with a few details of the job, and we will send you a clear quote.
I let a flat near Eastleigh station. Can you help?
Yes. We work for landlords and letting agents as well as householders, and several properties can go on one quote. You can call 0345 464 0079 or send us an email with the details for a clear quote.
Are you ARBOMaster approved?
Yes. We are approved under the ARBOMaster scheme.
Can you do the inside joint as well?
Yes. Inside, the joint between frame and plaster is sealed neatly, using a paintable sealant if you want to decorate.
Do you take out the old sealant first?
Always. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Where is Mr Mastic based?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
Do you have insurance?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
What should I tell you?
Tell us what needs doing and where, plus pictures if you have them. We will ask anything else we need to know.
Window mastic in Nob's Crook: local notes
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like South Stoneham House (about 4.6 miles south-west) are a reminder that the area around Nob's Crook has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Managing a site like Colden Common Primary School? Then its window and door frames need their mastic kept sound, just like a home’s. Homes close to Church of the Holy Trinity include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in.
Nob's Crook is about 2 miles north-east of Eastleigh, in Hampshire. Nob's Crook gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. 683 places in Hampshire are on our list. We also work in Southampton, around 6 miles away.
Our applicators cover all of SO21 for window mastic. We also cover the places around Nob's Crook: Fisher's Pond (1 mile south-east), Colden Common (1 mile north-west), Brambridge (1 mile north-west), Lord's Wood (1 mile west) and Crowdhill (1 mile south-east). Within a short drive, we also cover Winchester (5 miles north), Gosport (15 miles south-east), Fareham (11 miles south-east), Horndean (14 miles south-east), Totton (10 miles south-west) and Chandler's Ford (3 miles west).
Around Nob's Crook
We work in homes and buildings around Wyvern Technology College and The Fox & Hounds pub and the streets around them. For rail, the closest station is Eastleigh station, about 2.2 miles south-west of the centre. Well-known places in the area include Wolvesey Castle (4.8 miles north) and Moorgreen Hospital (4.2 miles south). Open spaces near Nob's Crook include Twyford Down and Shawford Down.
Work for landlords, hotels and businesses
We work for letting agents and landlords as well as householders. Resealing between tenancies is a simple way to keep a property in good order.
For anyone letting property in or around Nob's Crook, several properties can go on one quote. Just tell us the addresses and what each one needs.
What affects the quote in Nob's Crook
Every job gets its own quote. These are the things that affect it:
- How much old sealant there is and how hard it is to remove
- Any mould that needs treating
- The number of rooms or windows
- The type of sealant required
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part, and we’ll explain the quote if you ask.
What we need to know
Photos by email are helpful but not essential. Try to tell us:
- Access, such as stairs, a lift or height
- Whether it has been sealed before
- What the problem is, such as mould, gaps, leaks or cracking
- A few photos by email, if you can
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.
What we are called out for in Nob's Crook
Some failures date back to when the windows were fitted. Sealant run over dust, wet brick or loose mortar never bonded as it should, and it lets go sooner than it should.
These are the problems we’re asked about most:
- Cracked internal joints between frame and plaster
- Mastic that is falling out in pieces
- Leaking joints at the ends of sills
- Draughts coming in around windows and doors
Letting a property close to Eastleigh station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
What to look for in a quote
- Whether VAT is included
- Whether the sealant suits the joint
- How the joint is cleaned and prepared
- Are they insured?
Different surfaces, different methods
Window sills
The end joints of a sill tend to fail before the rest. We reseal them so rain cannot run into the wall.
uPVC windows
Fitters’ mastic on plastic frames is sometimes thin and rushed. It comes out, deep gaps get backing rod and the joint is resealed.