Isle of Wight · England
Thorncross Sand Mastic
Sand mastic across Thorncross and nearby, with old sealant always removed completely and a 12-month guarantee.
- Draughty sash windows at the surround
- Gaps where the frame meets the masonry
- Old sand mastic that has cracked, crumbled or fallen out
What happens on the day
All our tools and materials come with us in the van. After a quick look at the joints together, we protect the area and start. It normally takes anything from a few hours to a full day, depending on how many windows. For a village or hamlet like Thorncross, 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 look at the surrounds with you and agree what needs doing.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Before we arrive
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- On commercial sites, let us know about site rules
Getting a quote
We don’t publish a price list, as no two jobs are quite the same. Instead, we give you a clear price for your job. To arrange one, call 0345 464 0079 or drop us an email.
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Sand mastic in Thorncross, done properly
Across Thorncross, we renew sand mastic around sash and case windows. Every joint is cleaned out and filled by hand for a neat, traditional finish. Common call-outs are for weathered mastic on the most exposed windows and tired mastic found when preparing windows for paint, on period & listed homes, tenement windows and stone surrounds.
Mastic can only go onto a dry, clean joint, so window work in Thorncross is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
You get a one-year guarantee, the same in Thorncross as everywhere else we work.
- Location
- Thorncross (PO30)
- Wider area
- Isle of Wight
- Cover
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Towns and villages near Thorncross
More services for Thorncross
Aftercare tips
No joint lasts for ever, but care makes a real difference. Our tips:
- Leave the new mastic unpainted
- Get any rot dealt with first
- Do not run silicone over sand mastic
- Inspect the joints round the windows every year or so
Do not run silicone over the new mastic. If anything cracks, get it looked at rather than patching it.
Fine cracks show the mastic is starting to fail. Renewing it then is simpler than waiting until it falls out.
When it isn’t the sealant
New sealant cannot fix everything, and we’d rather say so up front. Sealant won’t put right:
- Cracked or broken glass
- Timber that has rotted
- Decisions on consent for listed homes
If you’re not sure, just ring 0345 464 0079 or email us and we will give you a straight answer.
Joints and surfaces we work on
- Tenement windows
- Brick reveals
- Timber door frames
- Stone surrounds
- Period & listed homes
- Sash and case windows
What affects the quote in Thorncross
Every job gets its own quote. These are the things that affect it:
- Whether old sealant or filler has to be cut out
- How many rooms, windows or areas are involved
- The type of sealant required
- The number and length of the joints
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs. Ask us for a quote and we’ll go through it with you.
Helping us quote
What to tell us when you ask for a quote:
- The rough size of the job
- The problem you’ve noticed
- The type of property
- Any previous sealing or DIY work
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved.
How the job changes by surface
Period and listed homes
On a listed home or in a conservation area, the right material matters. Like-for-like sand mastic is generally favoured.
Timber door frames
Doors face weather and wear and the mastic can crack early. It’s renewed by hand.
Thorncross questions
Can you do sand mastic in Thorncross?
Yes. Our work covers London and the South East, and Thorncross is part of that. You can ring 0345 464 0079 or send us an email and tell us what needs doing.
Is sand mastic in a coastal place like Thorncross 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.
Do you work for hotels and businesses?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.
What information do you need?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Can you match the sealant colour?
Normally, yes. Sealants come in white, clear, grey and other colours for many products, and we will agree it with you first.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Which products do you use?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we’ll tell you what we’re using.
Do you have insurance?
Yes. We are fully insured for every job we do.
Thorncross homes and the weather
Thorncross 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. The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Managing a site like Brighstone Church of England Aided Primary School? Then its window and door frames need their mastic kept sound, just like a home’s.
Thorncross is about 6 miles south-west of Newport, in the Isle of Wight. For sand mastic in and around Thorncross, it’s easy to get a quote: please call 0345 464 0079 or email us. We’re based in Crawley and cover the Isle of Wight. Our area takes in 125 places across the Isle of Wight, large and small. There’s also a page for Portsmouth, roughly 18 miles from Thorncross.
Jobs for sand mastic in PO30 is quoted and booked the same way as anywhere else. Neighbouring places we cover for sand mastic include Brighstone (1 mile north-west), Moortown (1 mile north-west), Shorwell (1 mile north-east), Little Atherfield (2 miles south-east) and Atherfield Green (2 miles south-east). Further out, we also cover Newport (6 miles north-east), Ryde (11 miles north-east), Cowes (9 miles north), Sandown (10 miles east), Shanklin (9 miles east) and Ventnor (8 miles east). If you’re somewhere remote, the job takes a little more planning, so mention it when you ask for a quote.
Near you in Thorncross
Typical jobs here are in homes near The Countryman pub and the streets around them. Nearby you’ll also find Whitecroft Hospital (4.4 miles north-east) and The Dinosaur Farm Museum (0.5 miles south-east). Open spaces near Thorncross include Brighstone Down.
For landlords and businesses
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
What we’re called out for in Thorncross
Rain on the window surround works into any crack and loosens it further. Windows facing the weather tend to go first.
The problems people usually mention when they call include:
- Mastic dropping out of the joint
- Cement or filler used on old window joints that has cracked
- Gaps between timber frames and stone or brick
- Mastic that needs renewing before redecorating
In the older streets around St. Mary's Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Questions to ask before booking
- How the joint is cleaned and prepared
- Whether VAT is included
- Who does the work, and how experienced they are
- How long the guarantee is