Isle of Wight · England
Sand Mastic in Wellow
Sand mastic for Wellow and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Open joints round the window box
- Tired mastic found when preparing windows for paint
- Old sand mastic that has cracked, crumbled or fallen out
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
If you are 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.
Sand mastic in Wellow
Silicone on a period window often looks wrong and doesn’t suit the building. Sand mastic gives a finish that matches the age of the house, and we can replace one with the other. We’re often asked to deal with draughts and rain around sash boxes and mastic that needs renewing before redecorating, on period & listed homes, sash and case windows and stone surrounds.
In a village or hamlet like Wellow, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
A one-year guarantee comes as standard, so you’re covered after we’ve gone.
- Location
- Wellow (PO41)
- Wider area
- Isle of Wight
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Wellow questions
Is sand mastic in a coastal place like Wellow any different?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. It’s worth checking the walls that face the sea first.
Will you come out to Wellow?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status and we are fully insured too.
I’m a tenant. Can you help?
Yes. Ask your landlord first, and we can send them the quote if that helps.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. We can talk about working times when we quote.
Can you seal over the old sealant?
No. Fresh sealant does not stick to old sealant, and it traps any mould or water underneath. We remove it all first.
Is it possible to take out silicone and use sand mastic instead?
Often, yes. Once the silicone is out and the joint prepared we point it with sand mastic.
Does someone need to be in?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Different surfaces, different methods
Brick reveals
Gaps between frame and brick let in rain and draughts. Renewing the mastic closes it.
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. Sand mastic seals the joint round it.
Honest limits
Before you book, it’s worth knowing the limits too:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Broken panes
- Planning or listed building consent (your local planning authority decides)
If you’re not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- Tenement windows
- Brick reveals
- Period & listed homes
- Timber door frames
- Sash and case windows
- Stone surrounds
What affects the quote in Wellow
Jobs vary more than people expect. The main factors:
- Working hours on commercial sites
- How much there is to do
- Any mould that needs treating
- Whether the work is at height
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re not sure whether it needs doing, phone 0345 464 0079 or email us for an honest opinion and a quote.
What to tell us for a quote
To make quoting easier, let us know:
- Photos by email, if that’s easy
- Roughly how big the job is
- Access, such as stairs, a lift or height
- The type of property
There’s no standard price list. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or drop us an email.
Also in Wellow
The process
We bring everything the job needs with us, so you do not need to buy or prepare anything. Once we have agreed what’s being done, we protect the area and start. It normally takes a few hours for a single window, longer for several. For a village or hamlet like Wellow, 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.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
How to prepare
- For indoor joints, keep the area dry beforehand if you can
- Keep pets and children clear of the area while we work
- Tell us if parking is tricky
Ask for a quote
If you are in Wellow and need sand mastic, phone 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Related advice
Signs you need sand mastic in Wellow
Timber frames move with the seasons. The movement cracks the mastic over time.
Look out for any of the following:
- Mastic that needs renewing before redecorating
- Old sand mastic that has cracked, crumbled or fallen out
- Gaps round a timber door in stone or brick
- A silicone bead on a sash window that spoils the look
For an older house near a landmark such as Wellow Baptist Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Comparing quotes
- How the joint is cleaned and prepared
- When the joint can take water or movement
- Is the old sealant removed completely?
- Whether you can choose the colour
Wellow homes and the weather
Wellow 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. That’s hard on the mastic around older windows and doors, especially on the side facing the sea. With historic houses such as Mottistone Manor (about 2.8 miles south) nearby, there’s older building stock in the area around Wellow as well as newer homes. 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.
Managing a site like Shalfleet Church of England Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Wellow is about 6 miles south-east of Lymington, in the Isle of Wight. Every kind of property in Wellow is covered for sand mastic. Every job comes with our 12-month guarantee. Wellow is one of 125 places in the Isle of Wight we cover. For nearby work, see our Southampton page (16 miles or so).
Every address in PO41 is within our area for sand mastic. We also cover the places around Wellow: Thorley Street (1 mile north-west), Ningwood (1 mile east), Thorley (1 mile north-west), Newbridge (1 mile east) and Shalcombe (1 mile south). We also work in nearby towns such as Newport (7 miles east), Ryde (13 miles east), Cowes (8 miles north-east), Sandown (13 miles east), Shanklin (13 miles east) and Ventnor (12 miles south-east). Island and remote addresses take a little more planning, so tell us where you are when you ask for a quote.
Near you in Wellow
Well-known places in the area include Calbourne Water Mill And Rural Museum (1.7 miles south-east) and Yarmouth Castle (2.4 miles north-west). For a walk, there’s Lymington and Keyhaven Marshes Nature Reserve and Compton Down.
Looking after it afterwards
So the new joints stay in good condition:
- Avoid heavy scraping on the mastic joint
- Keep modern sealant off the mastic
- Have rotten timber repaired before new mastic goes in
- Ask the planning authority about consent for listed or conservation-area homes
When preparing windows for paint, take care around the mastic. Hard scraping can loosen it.
It’s best to renew mastic before painting the windows. Paint over cracked mastic only covers it up.