Isle of Wight · England
Sand mastic for sash & case windows in Princelett, Isle of Wight
Sand mastic across Princelett and nearby, with every bit of old sealant taken out first.
- Silicone on a period window that looks wrong
- Wind and rain getting in round a sash window
- Cement or filler used on old window joints that has cracked
Do you need sand mastic in Princelett?
Shallow joints are a common cause. A thin layer does not hold well, which is why we pack deep voids first and get the depth right.
The most common problems we see are:
- Mastic round period door frames that has failed
- Old sand mastic that has cracked, crumbled or fallen out
- Gaps where the frame meets the masonry
- Cement or filler used on old window joints that has cracked
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.
What to look for in a quote
- How long the guarantee is
- Whether they seal over old material or remove it
- Are they insured?
- What happens if the job turns out different
Sand mastic in Princelett
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s made from sand and a linseed-oil-based binder, applied by hand. On older homes, it suits the building far better than silicone. We work on sash and case windows, period & listed homes and brick reveals, and people most often call us about open joints round the window box and draughts and rain around sash boxes.
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.
Your job is guaranteed for a year, as with all our work.
- Where
- Princelett (PO36)
- Wider area
- Isle of Wight
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Questions from Princelett
Does the coastal weather in Princelett affect outside sealant?
Coastal homes put outside sealant through more weather than inland ones, so preparation and the right sealant matter all the more. It’s worth checking the walls that face the sea first.
Can you help a landlord with a rental near Shanklin station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before any work starts.
Can I do it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
Is it possible to take out silicone and use sand mastic instead?
Usually, yes. With the silicone removed and the joint cleaned, sand mastic is applied by hand.
Do you do commercial work?
Yes, regularly. Larger jobs can be planned room by room or area by area.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. Our applicators cover Princelett.
Is there any odour?
It depends on the product. Some products have a noticeable smell, others very little, and any smell fades as they cure.
Can I paint the new mastic?
It’s traditionally left unpainted, which is what traditional guidance recommends. Ask us before decorating.
When it isn’t the sealant
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Planning or listed building consent (your local planning authority decides)
- Decayed frames that need repair
- Broken panes
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Brick reveals
- Tenement windows
- Sash and case windows
- Timber door frames
- Stone surrounds
- Period & listed homes
How the job changes by surface
Tenement and terrace windows
Upper-floor windows need access planning. Let us know the floor and we’ll confirm access.
Stone surrounds
Stone openings are rarely perfectly straight, so the gap isn’t the same all the way round. Sand mastic is shaped by hand to suit.
How we quote for sand mastic
You’ll get a clear quote before work begins. It takes into account:
- Any mould that needs treating
- How easy the joints are to reach
- When we can work, for business premises
- Which sealant suits the joint
Combining jobs into one visit is usually more efficient than separate visits. You’ll get one clear quote for the whole job.
Helping us quote
To help us quote quickly, let us know:
- Roughly how big the job is
- If someone has resealed it before
- Photos by email, if that is easy
- Access, such as stairs, a lift or height
Need a quote? Please phone 0345 464 0079 or send us an email and tell us about the job. We will explain what we’d do and send you a clear quote before any work starts.
DIY versus a professional finish
A DIY attempt does not rule out a professional job. We cut it out and start again, so just mention it when you contact us.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
Nearby places to Princelett
Other services in Princelett
Frames and glazing around Princelett
Princelett is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That’s hard on the mastic around older windows and doors, especially on the side facing the sea. 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.
If you let a flat or house near Shanklin station, older sash windows in a rental need their mastic kept sound to keep the weather out. Haseley Manor, about 1.8 miles north-west, is one of the historic houses in the wider area around Princelett.
Princelett is about 5 miles south-east of Newport, in the Isle of Wight. Across the PO36 area, our applicators can take on sand mastic. Princelett is one of 125 towns and villages in the Isle of Wight we cover. Our Portsmouth page covers work nearby, about 13 miles away.
We work across PO36 for sand mastic and the streets around it. We also cover 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). For island and remote addresses, the job takes a little more planning, so let us know when you get in touch.
Landmarks near Princelett
The closest station to Princelett is Shanklin station, about 1.4 miles south-east. Nearby you’ll also find Wight Aviation Museum (1.3 miles north-east) and Arthur Webster Memorial Hospital for Children (1.4 miles south-east). Green spaces nearby include Alverstone Mead and Stenbury Down.
How it works
There’s no need to move everything out, just the space around the work. We protect the rest, and the work takes a few hours for a single window, longer for several for a typical job. For a village or hamlet like Princelett, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
How to prepare
- Let us know about stairs, lifts or work at height
- Where the joints are inside, avoid wetting them before we arrive
- Let us know about parking restrictions
Get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
Read more
Landlord and commercial work in Princelett
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
If you manage several properties in or around Princelett, several properties can be quoted together. Send us the addresses and the work at each, and pictures by email help.