Isle of Wight · England
Shorwell Sand Mastic
Sand mastic across Shorwell and nearby, with old sealant always removed completely and a 12-month guarantee.
- Failed mastic on an exposed elevation
- Gaps where the frame meets the masonry
- Crumbling sand mastic round a window
Keeping the joints in good condition
A little care helps the new joints last. We recommend:
- Sort the mastic before the decorators arrive
- Check with your local planning authority if your home is listed
- Don’t run silicone over sand mastic
- Leave the new mastic unpainted
When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.
An open joint round the box lets weather through. Left, the gap tends to get bigger as more mastic falls out.
Sand mastic in Shorwell
If your home is listed or in a conservation area, check with your local planning authority if consent is needed before window work. Sand mastic is often favoured as a like-for-like material. If you have mastic that needs renewing before redecorating and draughts and rain around sash boxes, we can put it right.
Homes in small places like Shorwell often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
You’re covered for a year from the day we finish. If there’s a problem with it, please phone 0345 464 0079 or send us an email.
- Location
- Shorwell (PO30)
- Wider area
- Isle of Wight
- Guarantee
- A year, on every job
- Price
- A clear price before we start
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
How it works
When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes a few hours per window, depending on the condition of the joints. Somewhere as small as Shorwell, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
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
- Clear the area around the work
Getting a quote
For a quick quote, get us on the phone, or email us if that is easier. Describe what needs sealing and we will talk you through the work.
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Shorwell: your questions answered
Is sand mastic in a coastal place like Shorwell 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.
Will you come out to Shorwell?
Yes, Shorwell is covered. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Will you leave a mess?
Very little: the area around the joints is protected first, and we tidy up before we go.
Is it possible to take out silicone and use sand mastic instead?
Yes. We remove the silicone and clean the joint before the sand mastic goes in.
Can you match the sealant colour?
Generally, yes. White, clear and grey are common, and other colours are available for many products, and we’ll agree it with you first.
Can new sealant go over the old?
No. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
What do you need from me for a quote?
Just the basics: the address or postcode, what’s wrong and any access issues. Then phone 0345 464 0079 or email us.
Do I have to be there?
For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you don’t need to watch us work.
Landlords, agents and businesses in Shorwell
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. Several properties can be quoted together.
Honest limits
We’d rather tell you now than do work that will not last, so here’s what sealant cannot put right:
- Damaged stone surrounds
- Decayed frames that need repair
- Broken panes
If you’re not sure, just call 0345 464 0079 or email us and we will give you a straight answer.
Where we work in Shorwell
- Brick reveals
- Timber door frames
- Stone surrounds
- Tenement windows
- Sash and case windows
- Period & listed homes
Can I do it myself?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
How the job changes by surface
Brick reveals
Sand mastic is also used where timber frames meet brick. It gives a traditional finish.
Sash and case windows
The mastic round a sash window is on show, so a neat, even finish matters.
What affects the quote in Shorwell
There’s no set price list. What we look at:
- When we can work, for business premises
- Any mould that needs treating
- How many rooms, windows or areas are involved
- Which sealant suits the joint
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
Helping us quote
Photos help, but a description is a good start. Try to tell us:
- How we’d reach the joints
- The rough size of the job
- Any previous sealing or DIY work
- The address or postcode of the job
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. When it suits you, phone 0345 464 0079 or send us an email.
Sand mastic in Shorwell: local notes
Shorwell is close to 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. Compared with the north and west, the South East gets less rain, 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. Peter's Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Around Shorwell, as everywhere, sand mastic is only as good as the preparation behind it.
Shorwell is about 5 miles south-west of Newport, in the Isle of Wight. Homes, rented property, offices and hotels in Shorwell is covered for sand mastic, old or new, large or small. Every job comes with our 12-month guarantee. Shorwell is one of 125 towns and villages in the Isle of Wight we cover. Our Portsmouth page covers work nearby, about 17 miles away.
Postcode districts we cover here for sand mastic: PO30. We cover properties on Fine Lane, Orchards Way and Farriers Way. We also cover Thorncross (1 mile south-west), Little Atherfield (2 miles south), Moortown (2 miles west), Brighstone (2 miles west) and Chillerton (2 miles east). We also work in nearby towns such as Newport (5 miles north-east), Ryde (10 miles north-east), Cowes (8 miles north), Sandown (9 miles east), Shanklin (8 miles east) and Ventnor (7 miles south-east). For island and remote addresses, the job takes a little more planning, so mention it when you ask for a quote.
Near you in Shorwell
Typical jobs here are in homes near The Crown Inn and the streets around them. Nearby you’ll also find Carisbrooke Castle (3.6 miles north-east) and Whitecroft Hospital (3.1 miles north-east). Green spaces nearby include Brighstone Down.