Hampshire · England
Window & door mastic in Cole Henley, Hampshire
Window mastic in Cole Henley from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Damp patches on the reveal after heavy rain
- Old mastic that has gone black or come away
- Cracked or shrunken mastic around the frame
Window mastic for homes and businesses in Cole Henley
Homes in Cole Henley have every kind of window: from uPVC casements to timber and aluminium, along with patio doors, French doors and sills. The sealant is chosen to suit the frame material and the wall. We work on uPVC windows, composite doors and window sills, and people most often call us about cracked sealant at the sill ends and rushed sealant from a window installation.
Somewhere as small as Cole Henley, 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.
There’s a 12-month guarantee on every job, whatever its size.
- Place
- Cole Henley (RG28)
- Region
- Hampshire
- Cover
- One year on every job
- Quotes
- A clear price before work begins
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Landlords, agents and businesses in Cole Henley
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
We work for letting agents and landlords as well as homeowners. Resealing between tenancies keeps a property looking cared for.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Keep jet washers away from the mastic
- Look round the frames every year or so
- Don’t paint over the silicone
- Keep solvents and bleach off the sealant
Clean the frames with mild soapy water, and keep solvents and harsh chemicals off the joint.
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.
Common questions in Cole Henley
Is Cole Henley within the area you cover?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Do you work for landlords with property near Whitchurch (Hampshire) station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
What should I tell you?
Only a few details: where it is, what you’ve noticed and how we reach it. Then call 0345 464 0079 or send us an email.
Can you do several jobs on one visit?
Yes. Just list everything you need and we’ll quote it together.
Do you seal inside as well as outside?
Yes. Plenty of draughts come through the inside joint as well as the outside, so it can be worth sealing both.
Is there any odour?
It depends on the product. Some smell for a while, some hardly at all, and any smell fades as they cure.
Do I need to be at home?
That depends on where the joints are. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
Do you guarantee window mastic?
Yes, with our one-year guarantee. Keeping drainage clear and checking the joints yearly helps them last.
Why act early in Cole Henley
If you are painting or rendering, reseal at the same time. A clean new bead makes new paint or render look finished, and it’s easier while the walls are being worked on anyway. Around Cole Henley, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re unsure, phone 0345 464 0079 or send us an email and we’ll give you an honest view and a quote.
Why choose Mr Mastic in Cole Henley
- Trusted Arbo and Everbuild sealants
- You choose the colour before work begins
- A choice of colours where the product allows
- Tidy, careful work
Take a look at our cost guide and customer reviews.
Surface by surface
Window sills
Every drop off the glass ends up on the sill, so the joints at each end and underneath matter. They’re cut out and resealed with exterior sealant.
Timber windows & doors
On period timber windows, traditional sand mastic is sometimes the better choice. We’ll tell you which suits your home.
What window mastic looks like in Cole Henley
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.
Managing a site like Testbourne Community School? Then the mastic around its windows and doors needs looking after like any other building’s.
Cole Henley is about 7 miles north-east of Andover, in Hampshire. From the centre of Cole Henley to the outskirts, window mastic is available for homes and businesses alike. Cole Henley is one of 683 towns and villages in Hampshire we cover. We also work in Reading, around 20 miles away.
We cover every part of the RG28 postcode area for window mastic and the streets around it. We also cover Wells-in-the-Field (2 miles south), Freefolk (2 miles south-east), Whitchurch (2 miles south), Wadwick (3 miles north-west) and St Mary Bourne (3 miles west). Larger places within reach include Basingstoke (10 miles east), Winchester (14 miles south), Andover (7 miles south-west), Tadley (10 miles north-east), Hyde (13 miles south) and Popley (11 miles east).
Landmarks near Cole Henley
The closest station to Cole Henley is Whitchurch (Hampshire) station, about 1.4 miles south of the centre. Green spaces nearby include Ladle Hill.
Also near Cole Henley
More services for Cole Henley
The process
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The job generally takes most of a day for a typical house, less for a few frames from start to finish. Somewhere like Cole Henley 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.
- First we look at every frame and agree the list.
- We remove the old mastic and clean the frame and the wall.
- Deep gaps are filled with backing rod to set the depth.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- Every joint is checked before we leave.
Before we arrive
- Tell us about any water getting in
- On commercial sites, let us know about site rules
- Mention any parking rules near the property
How to get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
Read more
Signs you need window mastic in Cole Henley
Older frames were often sealed with products that set hard. Once it’s rigid, every bit of frame movement pulls at it, and a gap opens along one edge.
Common reasons people contact us are:
- Black, perished sealant on frames
- Damp patches on the reveal after heavy rain
- Cracked internal joints between frame and plaster
- Hard, cracked sealant around windows
Rented homes near Whitchurch (Hampshire) station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
What your quote should include
- How the surfaces are prepared before sealing
- How hidden problems are handled
- Who does the work, and how experienced they are
- Are they insured?
Can I do it myself?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.