Isle of Wight · England
Ventnor Window Mastic
Window mastic in Ventnor from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Old mastic that has gone black or come away
- Sealant in the wrong colour for the frame
- Untidy mastic left by window fitters
What affects the quote in Ventnor
Some jobs are bigger than they look, and some smaller. The main factors:
- The number of rooms or windows
- How easy the joints are to reach
- The size of the job
- Working hours on commercial sites
Doing several joints on one visit generally makes better use of the time than several visits. We’ll send you a clear quote for the lot.
What we need to know
Before you ask for a quote, have a think about:
- The type of property
- How many joints, rooms or windows are involved
- Any access issues, like height or stairs
- Where the job is, and your postcode
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. When it suits you, call 0345 464 0079 or drop us an email.
Window mastic in Ventnor, done properly
From a single sill to a whole house of windows, the work is priced before anything is done. Just phone 0345 464 0079 or drop us an email and tell us how many frames there are and how they’re reached. If you’re dealing with gaps between the frame and the inside reveal and cracked sealant at the sill ends, we can put it right, whatever the surface.
Around Ventnor, conservatories, garden rooms and patio doors are often part of the house. Those joints need the same attention as the main windows.
Big or small, you get the same one-year guarantee in Ventnor and across the Isle of Wight.
- Location
- Ventnor (PO38)
- Region
- Isle of Wight
- Cover
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Windows and doors in Ventnor
Ventnor is within about 1 mile of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on the mastic around window and door frames, which can dry out and crack sooner where a building faces the weather. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For an older house near a landmark such as St Catherine's Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Managing a site like St Catherine's School? Then its window and door frames need their mastic kept sound, just like a home’s.
Ventnor is about 8 miles south-east of Newport, in the Isle of Wight. If you need window mastic in Ventnor, please phone 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover the Isle of Wight, Ventnor included. Across the Isle of Wight, we cover 125 places, Ventnor among them. For nearby work, see our Portsmouth page (16 miles or so).
We cover every part of PO38 for window mastic. If you need window mastic at a property on Old Station Road, Market Street and High Street or anywhere close by, we can help. With the A3055 and B3327 close by, Ventnor is easy for our applicators to reach. Close by, we work in Steephill (1 mile south-west), Bonchurch (1 mile east), St Lawrence (1 mile west), Wroxall (2 miles north) and Luccombe Village (2 miles north-east). Further out, we also cover Newport (8 miles north-west), Ryde (9 miles north), Cowes (12 miles north), Sandown (5 miles north-east), Shanklin (3 miles north-east) and East Cowes (11 miles north). Ventnor is one of the larger places we cover in the Isle of Wight. For island and remote addresses, a little more planning is needed, so mention it when you ask for a quote.
What’s near Ventnor
Locally, jobs take us to homes and businesses close to St Francis Catholic and Church of England Primary Academy and The Blenheim pub. For rail, the closest station is Shanklin station, about 3 miles north-east of the centre. A little further out are Arthur Webster Memorial Hospital for Children (3 miles north-east) and Longshoremans Museum (within half a mile south). The countryside around Ventnor includes Alverstone Mead and St Boniface Down.
Surface by surface
uPVC windows
Some uPVC windows were sealed at fitting with a quick bead that never bonded. We cut it out, back any deep gaps and reseal properly.
Aluminium frames
Large aluminium doors have long joints down each side and across the head, and the bottom joint sees the most water. Each is cleaned, backed where deep and resealed.
For landlords and businesses
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
Ventnor questions
Is window mastic in a coastal place like Ventnor any different?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
Can you help a landlord with a rental near Shanklin station?
Yes. We work for letting agents and landlords as well as householders. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear price.
Does the work come with a guarantee?
Yes. Our 12-month guarantee covers every job, inside or out.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
What does window mastic cost?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Do you hold any approvals?
Yes. We’re approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
What sealant do you use?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we will tell you what we’re using.
How many windows can you do in a day?
The work takes a morning for a couple of windows and a door. Access and the amount of old mastic make the biggest difference.
The process
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes anything from an hour or two to a full day, depending on how many frames there are, and the area is left clean. A visit to Ventnor is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- Each frame is looked over and we agree which ones need resealing.
- The old mastic is cut out and scraped back to clean surfaces.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- We tool each bead neatly and check every joint is closed.
Preparing for the visit
- Mention any leaks or damp you’ve noticed
- Keep pets and children clear of the area while we work
- Mention any sign-in or site rules at work premises
Ask for a quote
For a quick quote, get us on the phone, or email us if that is easier. Describe what needs sealing and we’ll talk you through the work before giving you a price.
Read more
Do you need window mastic in Ventnor?
Mastic ages in the weather. Sunlight dries the surface out, and over the years it loses its give, cracks and comes away.
People normally contact us after spotting something like this:
- Gaps left after new windows were fitted
- Cracked or shrunken mastic around the frame
- Cracked sealant at the sill ends
- Damp patches on the reveal after heavy rain
Rented homes near Shanklin station change hands often, and renewing tired window mastic between tenants heads off draught and damp complaints.
Comparing quotes
- The length of the guarantee
- What happens if the job turns out different
- Who does the work, and how experienced they are
- What insurance they hold
Can I do it myself?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
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.
Nearby places to Ventnor
More services for Ventnor
What we can’t put right
Sealant isn’t the answer to every problem, and we will tell you before we start. Sealant won’t put right:
- Misting between the panes of a double-glazed unit (that needs a new unit)
- A frame that has rotted at the joint
- Damp problems in the wall away from the window
If in doubt, call 0345 464 0079 or email us and we will say what we think.
Joints and surfaces we work on
- Aluminium frames
- Composite doors
- Window sills
- uPVC windows
- Patio & French doors
- Timber windows & doors