Isle of Wight · England
Princelett Window Mastic
Mastic around window and door frames, sills and patio doors for homes and businesses in Princelett and across the Isle of Wight. Fully insured, ARBOMaster approved and guaranteed for a year.
- Old mastic that has gone black or come away
- Damp patches on the reveal after heavy rain
- Sealant in the wrong colour for the frame
How we quote for window mastic
Your quote is based on your job. We take into account:
- How much old sealant there is and how hard it is to remove
- The size of the job
- Whether the work is at height
- Any mould that needs treating
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please call 0345 464 0079 or email us.
What we need to know
Photos help, but a description is a good start. Please mention:
- Any access issues, like height or stairs
- A few photos by email, if you can
- The problem you’ve noticed
- Any previous sealing or DIY work
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. When it suits you, call 0345 464 0079 or drop us an email.
Window mastic for homes and businesses in Princelett
Every window and door frame has a gap around it, and mastic is what closes it. When it cracks, hardens or pulls away, draughts and rain get in. The old mastic is removed and the joint resealed with a flexible exterior sealant. If you have a bead that doesn’t match the frame and draughty joints inside around the window, we can help.
Around Princelett, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
We stand behind the work with a one-year guarantee, so you are not left on your own once the job is done.
- Location
- Princelett (PO36)
- Wider area
- Isle of Wight
- Cover
- One year on every job
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What we do, step by step
Before we leave, we go over the finished joints with you and tell you how long to leave it. The work normally takes a few hours for a handful of frames, longer for a whole house, depending on how much there is to do. For a village or hamlet like Princelett, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- 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.
Getting ready for the visit
- Let us know if you’ve seen damp or leaks
- For indoor joints, keep the area dry beforehand if you can
- Tell us about access, such as stairs, a lift or high-level joints
Ask for a quote
Want a quote for window mastic? Please ring 0345 464 0079 or email us with a few details. You will know what we plan to do, and what it will cost, before any work begins.
Read more
Should I try it myself first?
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Towns and villages near Princelett
What else we do in Princelett
Signs you need window mastic in Princelett
Sun, frost and rain wear sealant out. UV light hardens the outside of the bead, until it loses its stretch and starts to crack.
These are the problems we are asked about most:
- Gaps left after new windows were fitted
- Cold air getting in at the frame edge
- Mastic that has split away from the wall
- Water coming in at the bottom corners of a door
Historic houses such as Haseley Manor, about 1.8 miles north-west, show how far back building around Princelett goes.
Questions to ask before booking
- Which colour the sealant will be
- What guarantee comes with the work
- What the quote includes, VAT included or not
- Who does the work, and how experienced they are
Your questions about window mastic in Princelett
Can you help a landlord with a rental near Shanklin station?
Yes, we work for landlords and agents. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we will send you a clear quote.
Does the coastal weather in Princelett affect outside sealant?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. Walls facing the sea are generally the first to need attention.
Does the work come with a guarantee?
Yes. Every job comes with our one-year guarantee, and we are ARBOMaster approved applicators.
Can you get sealant to suit coloured frames?
Yes, we choose a colour to suit the frame. Grey and black frames get grey or black sealant, and wood-effect frames usually suit brown.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises. We can talk about working times when we quote.
How long before the joint can be used?
Cure times vary by product and the temperature. Before we leave, we will tell you the cure time.
Can new sealant go over the old?
No, it won’t last. It may look fine at first, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Do you cover Princelett?
Yes. We work in Princelett. For a quote, phone 0345 464 0079 or drop us an email.
For landlords and businesses
For anyone letting property in or around Princelett, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and pictures by email help.
We work for landlords and letting agents as well as householders. Resealing between tenancies keeps a property looking cared for.
Princelett homes and the weather
Princelett is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on the mastic around window and door frames, especially on the side facing the sea. With historic houses such as Haseley Manor (about 1.8 miles north-west) nearby, there’s older building stock in the area around Princelett as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Rented homes near Shanklin station change hands often, and renewing tired window mastic between tenants heads off draught and damp complaints. For site and facilities teams at buildings such as Sandown Bay Academy, the mastic around its windows and doors needs looking after like any other building’s.
Princelett is about 5 miles south-east of Newport, in the Isle of Wight. Homes, rented property, offices and hotels in Princelett is covered for window mastic. Every job comes with our 12-month guarantee. Princelett is one of 125 places in the Isle of Wight where we work for window mastic. We also work in Portsmouth, about 13 miles from Princelett.
Our applicators cover all of PO36 for window mastic. Other places close to Princelett include Apse Heath (1 mile north-east), Branstone (1 mile north), Winford (1 mile north-east), Whiteley Bank (1 mile south-west) and Hale Common (1 mile north-west). We also work in nearby towns such as Newport (5 miles north-west), Ryde (6 miles north), Cowes (9 miles north-west), Ventnor (3 miles south), East Cowes (8 miles north-west) and Oakfield (6 miles north-east). Remote and island addresses need a little more planning, so please mention your location when you call 0345 464 0079 or send us an email.
What’s near Princelett
The closest station to Princelett is Shanklin station, about 1.4 miles south-east. A little further out are Wight Aviation Museum (1.3 miles north-east) and Arthur Webster Memorial Hospital for Children (1.4 miles south-east). Open spaces near Princelett include Alverstone Mead and Stenbury Down.
Different surfaces, different methods
Window sills
Where a sill meets brick or render, the ends often crack first. A tight seal at each end keeps rain out of the wall.
Composite doors
A composite door usually sits in a plastic outer frame, and the joint around it is sealed like a window. We match the colour to the frame.
Keeping the joints in good condition
To keep the joints looking good and working properly:
- Walk round the house once a year and look at the joints
- Avoid harsh chemicals near the mastic
- Ventilate rooms so frames don’t stay wet inside
- Keep drainage slots and sill grooves clear
A yearly look round the frames is enough. Small splits are simple to catch before they leak.
Draughts get worse, not better. As old mastic keeps shrinking, the gap widens, and a cold room gets colder. Resealing closes it.