Isle of Wight · England
Sand Mastic in Adgestone
Professional sand mastic in and around Adgestone, with every bit of old sealant taken out first and a 12-month guarantee.
- Mastic dropping out of the joint
- Failed mastic on an exposed elevation
- A silicone bead on a sash window that spoils the look
Keeping the joints in good condition
So the new joints stay in good condition:
- Ask a joiner to look at soft timber first
- Clear gutters so water doesn’t pour onto the windows
- Leave the new mastic unpainted
- Plan mastic work ahead of painting
Do not run silicone over the new mastic. If anything cracks, get it looked at before trying a quick fix.
Crumbling mastic lets rain into the joint. That water can reach the timber frame and the wall so early renewal protects both.
How we handle sand mastic in Adgestone
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 period homes, it looks right where silicone wouldn’t. We work on stone surrounds, tenement windows and sash and case windows, and common reasons people get in touch are patchy fillers round a sash window and draughty sash windows at the surround.
In a village or hamlet like Adgestone, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these don’t always suit modern silicone, so the sealant has to be chosen to suit the building.
You are covered for a year from the day we finish. If there’s a problem with it, please ring 0345 464 0079 or send us an email.
- Location
- Adgestone (PO36)
- Region
- Isle of Wight
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Common questions in Adgestone
Does the coastal weather in Adgestone affect outside sealant?
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.
Can you help a landlord with a rental near Sandown 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.
Do you have insurance?
Yes, we’re fully insured for domestic and commercial work.
Do you remove the old sealant?
Always. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Should I check with the council before work on a listed or conservation-area home?
Checking first is sensible. Ask your local planning authority whether consent is needed for work on a listed home or in a conservation area.
How long does sand mastic take to harden?
It forms a skin fairly soon, then hardens over a longer period. The weather and joint depth both affect it.
Which products do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Is it possible to paint over sand mastic?
Sand mastic is normally left unpainted, which is what traditional guidance recommends. Ask us before decorating.
Also near Adgestone
What else we do in Adgestone
Quotes for sand mastic in Adgestone
We don’t publish a price list, because no two jobs are the same. The quote depends on:
- Any mould that needs treating
- Which sealant suits the joint
- How many areas need sealing
- The size of the job
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part, and we will explain the quote if you ask.
Asking for a quote
When you call or email, it’s useful to know:
- The address or postcode of the job
- The type of property
- Access, such as stairs, a lift or height
- Any previous sealing or DIY work
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that is easy.
Why deal with it now?
New sash windows are a major, costly change, and in listed buildings it may need consent. Where the frames are in good order, new mastic seals the surround. In a small place like Adgestone, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are not sure whether it needs doing, phone 0345 464 0079 or email us and we’ll give you an honest view and a quote.
Why us?
- Any old sealant cut out fully, not covered over
- Homes, businesses and hotels
- More than 20 years in sealant work
- Full insurance on every job
Read what affects the cost or customer reviews.
What sand mastic looks like in Adgestone
Adgestone is within about 2 miles of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. With historic houses such as Morton Manor (about 0.7 miles east) nearby, there’s older building stock in the area around Adgestone as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
If you look after a building such as Brading Church of England Controlled Primary School, the mastic around its windows and doors needs looking after like any other building’s. If you live in an older home near Church of St. John the Evangelist, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Adgestone is about 4 miles south of Ryde, in the Isle of Wight. Wherever you are in the PO36 postcode area, we cover sand mastic for homes and businesses. Adgestone is one of 125 towns and villages in the Isle of Wight where we work. We also work in Portsmouth, around 10 miles away.
Here we cover the PO36 postcode area for sand mastic. We cover properties on Upper Road, Lower Road and Lower Adgestone Road. We also cover the places around Adgestone: Morton (1 mile east), Yarbridge (1 mile east), Brading (1 mile north-east), Alverstone (1 mile south-west) and Sandown (1 mile south). Larger places within reach include Newport (6 miles west), Ryde (4 miles north), Cowes (9 miles north-west), Shanklin (3 miles south), Ventnor (6 miles south) and East Cowes (8 miles north-west). If you’re somewhere remote, the job takes a little more planning, so let us know when you get in touch.
What’s near Adgestone
Around Adgestone, our work takes us to homes and buildings near The Bay Church of England School and Sandown Bay Academy. Adgestone’s nearest station is Sandown station, roughly 1.1 miles south. Nearby you will also find Sandown Castle (1.3 miles south-east) and Brading Waxworks (1 mile north-east). Open spaces near Adgestone include Alverstone Mead and Brading Down.
What we’re called out for in Adgestone
Decorating can disturb tired mastic. Many people find it crumbling when they prepare the windows, which is a good time to renew it.
Most people get in touch after spotting something like this:
- Draughty sash windows at the surround
- Silicone on a period window that looks wrong
- Mastic worn away on windows facing the weather
- Gaps where the frame meets the masonry
Rented homes near Sandown station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about.
Questions to ask before you book
- Whether they seal over old material or remove it
- What product goes in the joint
- What happens if the job turns out different
- Are they insured?
Landlords, agents and businesses in Adgestone
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
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 do, step by step
The work is kept neat and contained to the joints we’re treating, so you can carry on as normal. The job usually takes a few hours per window, depending on the condition of the joints, and we tell you how long to leave it before we go. For a village or hamlet like Adgestone, 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.
- We look at the surrounds with you and agree the joints to renew.
- 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.
- We dress the finish so it sits neatly against the masonry.
Preparing for the visit
- Clear items away from the joints we are working on
- Tell us if parking is tricky
- Let us know about earlier repairs to the joints
How to get a quote
To get a quote, call 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We’ll send you a clear quote before any work starts.
Advice
Can I do it myself?
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.