Isle of Wight · England
Sand mastic for sash & case windows in Thorley Street, Isle of Wight
Sand mastic in Thorley Street from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Wind and rain getting in round a sash window
- Patchy fillers round a sash window
- Silicone on a period window that looks wrong
Sand mastic for homes and businesses in Thorley Street
Our applicators renew the sand mastic around sash and case windows and doors set in stone or brick. Out comes the old, loose mastic, and new mastic is applied and shaped by hand. We work on sash and case windows, brick reveals and timber door frames, and common reasons people get in touch are mastic worn away on windows facing the weather and mastic round period door frames that has failed.
Around Thorley Street, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Where
- Thorley Street (PO41)
- Region
- Isle of Wight
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Surface by surface
Period and listed homes
Materials matter on listed and conservation-area homes. Like-for-like sand mastic is normally favoured.
Timber door frames
Sand mastic is used round timber door frames too. We renew it the same way as on windows.
Sand mastic in Thorley Street: local notes
Thorley Street is within about 2 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on the mastic around older windows and doors, especially on the side facing the sea. Historic houses like Mottistone Manor (about 3.4 miles south-east) are a reminder that the area around Thorley Street 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.
In and around Thorley Street, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
Thorley Street is about 6 miles south-east of Lymington, in the Isle of Wight. Thorley Street gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our area takes in 125 places across the Isle of Wight, large and small. Southampton is on our list too, about 16 miles from Thorley Street.
Our applicators cover all of the PO41 postcode area for sand mastic and the streets around it. That includes homes and businesses on Hill Place Lane and Holmfield Avenue and the roads around them. We also cover Thorley (1 mile west), Wellow (1 mile south-east), Ningwood (1 mile east), Shalcombe (2 miles south-east) and Newbridge (2 miles east). Within a short drive, we also cover Newport (7 miles east), Ryde (13 miles east), Cowes (8 miles north-east), Sandown (14 miles east), Shanklin (13 miles east) and Ventnor (13 miles south-east). Island and remote addresses take a little more planning, so please mention your location when you call 0345 464 0079 or drop us an email.
Landmarks near Thorley Street
Nearby you’ll also find Yarmouth Castle (1.7 miles north-west) and Ferguson Family Museum (2 miles west). For a walk, there’s Lymington and Keyhaven Marshes Nature Reserve and Compton Down.
How to look after the new joints
No joint lasts for ever, but care makes a real difference. A few tips:
- Check with your local planning authority if your home is listed
- Take care around the mastic when scraping paint
- Make sure water runs off the sill
- Ask a joiner to look at soft timber first
When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.
Small cracks are a sign the mastic is ageing. Renewing it then is simpler than waiting until it falls out.
Questions from Thorley Street
Do you cover Thorley Street for sand mastic?
Yes, Thorley Street is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or email us with a few details of the job.
Is sand mastic in a coastal place like Thorley Street any different?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us and we are fully insured.
Is it possible to take out silicone and use sand mastic instead?
Yes. We remove the silicone and clean the joint, then point it with sand mastic.
Can sand mastic be painted?
It’s traditionally left unpainted, as guidance on traditional windows advises. Ask us before decorating.
Can I do it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
I’m a tenant. Can you help?
Of course. Check with your landlord; we can send the quote to them too.
Does someone need to be in?
That depends on where the joints are. For work indoors, someone needs to let us in, while outside work can sometimes be arranged differently.
Do you need sand mastic in Thorley Street?
Over the years, sand mastic weathers. It hardens, cracks and starts to come away from the frame or the masonry.
These are the problems we’re asked about most:
- Cement or filler used on old window joints that has cracked
- Gaps where the frame meets the masonry
- Mastic worn away on windows facing the weather
- Crumbling sand mastic round a window
Homes close to St. Swithin's Church include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Questions to ask before you book
- How long to leave it before use
- How much experience the applicator has
- Whether the sealant suits the joint
- Is VAT in the price?
Also in Thorley Street
Why it’s worth doing now in Thorley Street
Draughts round a sash window aren’t always the sashes. Gaps between the frame and the wall can be just as bad and new mastic seals them. In a small place like Thorley Street, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
What you pay reflects the work, not guesswork. That’s why we ask about the job first.
Why us?
- Over 20 years’ experience
- Experience in homes, commercial sites and hotels
- Full insurance on every job
- Rated 4.9 stars on Google
Take a look at how sealant jobs are priced or our reviews.
Work for landlords, hotels 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.
For anyone letting property in or around Thorley Street, several properties can go on one quote. Send us the addresses and the work at each, and pictures by email help.
Honest limits
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Cracked or broken glass
- Planning or listed building consent (your local planning authority decides)
- Crumbling stone or brickwork round the window
If you’re not sure, just call 0345 464 0079 or drop us an email and we will give you a straight answer before you book.
What we seal
- Stone surrounds
- Sash and case windows
- Period & listed homes
- Tenement windows
- Brick reveals
- Timber door frames
What we do, step by step
On the day, we start by going over the job with you, so you know exactly what we’re doing. Surfaces next to the work are protected before work begins. The work normally takes anything from a few hours to a full day, depending on how many windows. Somewhere as small as Thorley Street, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by checking each surround and agreeing the joints to renew.
- The loose and crumbling mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The mastic is finished to sit tidily against the stone or brick.
Preparing for the visit
- Clear the area around the work
- Where the joints are inside, avoid wetting them before we arrive
- Tell us if parking is tricky
Getting 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, and add pictures by email if you can.