Hampshire · England
Whitsbury Window Mastic
Mastic around window and door frames, sills and patio doors in Whitsbury, with a one-year guarantee on every job. Ask us for a quote.
- Gaps between the frame and the inside reveal
- Sealant in the wrong colour for the frame
- Gaps left after new windows were fitted
Whitsbury questions
Is window mastic in Whitsbury guaranteed?
Every job comes with our one-year guarantee, wherever it is. We’re fully insured, and an ARBOMaster approved applicator.
Do you cover Whitsbury for window mastic?
Yes, Whitsbury is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job.
Are you ARBOMaster approved?
Yes. We are approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Can resealing stop a draught around my window?
Often, yes. Air often gets in between the frame and the wall, and resealing inside and out closes it.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. We cover Whitsbury and the rest of Hampshire.
How long will my window job take?
It depends on access, the old mastic and the size of the frames. You will know the timing when we quote.
Can landlords and businesses book you?
Yes, often. We can quote for several properties at once.
Are you insured?
Yes. We’re fully insured, with over 20 years’ experience in sealant work.
About our window mastic in Whitsbury
From a single sill to a whole house of windows, the work is priced before anything is done. To get one, call 0345 464 0079 or email us with the number of frames and any access details. If you’re dealing with cracked sealant at the sill ends and sealant in the wrong colour for the frame, we can help.
In a village or hamlet like Whitsbury, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these don’t 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 anything isn’t right with it, phone 0345 464 0079 or drop us an email.
- Location
- Whitsbury (SP6)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Also near Whitsbury
What else we do in Whitsbury
Leave it or put it right?
If you’re painting or rendering, reseal at the same time. Fresh joints finish the job neatly. In a small place like Whitsbury, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
We don’t show prices on the website, because each job is priced on what it involves. Call for a quick quote.
Why us?
- Sealant colour chosen to suit
- 180+ five-star Google reviews
- Trusted Arbo and Everbuild sealants
- A 12-month guarantee on all work
What we’re called out for in Whitsbury
Mastic ages in the weather. UV light hardens the outside of the bead, and over the years it loses its give, cracks and comes away.
People generally contact us after spotting one of these:
- Rushed sealant from a window installation
- Draughty joints inside around the window
- Cracked or shrunken mastic around the frame
- Cracked sealant at the sill ends
Schools such as Western Downland Church of England Aided Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
What your quote should include
- What happens if the job turns out different
- Which sealant they’ll use, and why
- The length of the guarantee
- How the surfaces are prepared before sealing
What window mastic looks like in Whitsbury
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Breamore House (about 1.6 miles east) are a reminder that the area around Whitsbury has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
If you live in an older home near Church of St Leonard, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Whitsbury is in Hampshire. If you need window mastic in Whitsbury, please call 0345 464 0079 or drop us an email for a quick quote. We cover Hampshire from our Crawley base, Whitsbury included. Whitsbury is one of 683 towns and villages in Hampshire we cover for window mastic. Southampton is on our list too, around 19 miles away.
Work in SP6 works the same way as everywhere else we cover. Nearby, we also carry out window mastic in Rockbourne (1 mile south-west), Damerham (2 miles south-west), Sandleheath (3 miles south), Ashford (3 miles south) and Alderholt (4 miles south). We also work in nearby towns such as Totton (14 miles east), Romsey (15 miles east), Ringwood (9 miles south), Fordingbridge (3 miles south), St Leonards (10 miles south) and Brockenhurst (15 miles south-east).
Around Whitsbury
Locally, jobs take us to homes and businesses close to The Cart Wheel Public House, among other places. A little further out are Fordingbridge Museum (3.4 miles south-east) and Salisbury District Hospital (5.2 miles north).
What we can’t put right
It helps to know what we can’t do:
- Condensation trapped between the panes
- Faulty window hardware
- Penetrating damp from a failed cavity tray or render
If you’re not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Where we work in Whitsbury
- Patio & French doors
- Timber windows & doors
- Window sills
- Aluminium frames
- Composite doors
- uPVC windows
How the job changes 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.
Composite doors
An exposed front door gets wind-driven rain. We pay most attention there.
Looking after it afterwards
Good habits help new joints last longer. A few tips:
- Do not paint over the silicone
- Keep solvents and bleach off the sealant
- Do not aim a pressure washer at the joints
- Make sure the drainage slots aren’t blocked
Check the drainage slots in the frames are not blocked, so rain drains out rather than building up at the sealant.
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.
How the visit works
A visit follows a simple pattern: we look at the joints together, protect the area around them, carry out the job and tidy away. It usually takes a few hours for a few frames, or a day or more for a whole house. Somewhere as small as Whitsbury, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Deep gaps get closed-cell backing rod to set the depth.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
Before we arrive
- Let us know about stairs, lifts or work at height
- Mention if the joints have been sealed before
- Let us know if you’ve seen damp or leaks
How to get a quote
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or send us an email.
Advice
What affects the quote in Whitsbury
Call for a quick quote. The main things that affect it are:
- Whether there’s mould to deal with
- The type of sealant required
- How much there is to do
- How easy the joints are to reach
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
What we need to know
When you contact us, it’s useful to know:
- How many joints, rooms or windows are involved
- Photos by email, if that is easy
- Where the job is, and your postcode
- The type of property
Getting a quote is simple: tell us what needs doing and where. Photos by email help us understand the job, and we will take it from there.