Hampshire · England
Highcliffe Sand Mastic
Sand mastic for Highcliffe, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Weathered mastic on the most exposed windows
- Mastic round period door frames that has failed
- Open joints round the window box
How we handle sand mastic in Highcliffe
Traditional burnt sand mastic blends with stone and brick surrounds. It suits period and listed homes, where modern sealant can look out of place. If you have open joints round the window box and old sand mastic that has cracked, crumbled or fallen out, we can help.
Houses in smaller places like Highcliffe can stand more in the open than those in a built-up town. The mastic around frames on those walls tends to age faster.
A one-year guarantee comes as standard, so you’re covered after we have gone.
- Location
- Highcliffe (SO23, SO21, SO20)
- Wider area
- Hampshire
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
When it isn’t the sealant
Before booking, it’s worth knowing the limits:
- Cracked or broken glass
- Sash cords, weights and draught-proofing of the sashes
- Damaged stone surrounds
If you are not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer.
Surfaces we seal
- Period & listed homes
- Brick reveals
- Timber door frames
- Tenement windows
- Sash and case windows
- Stone surrounds
How the visit works
There is not much for you to do on the day. Point us to the joints and we will get on with it. The work itself takes anything from a few hours to a full day, depending on how many windows, including the tidy-up. Parking around Highcliffe is generally easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- First, we look at the surrounds with you and agree what needs doing.
- We rake out the old mastic and clean the joint.
- Large voids are packed out first, so the mastic is not too thick.
- 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.
How to prepare
- Let us know about earlier repairs to the joints
- On commercial sites, let us know about site rules
- Let us know about stairs, lifts or work at height
Getting a quote
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 will talk you through the work and give you a clear quote.
Read more
What happens if it’s left?
Replacing sash windows is a big decision for a period home and on a listed home, consent may be needed. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. In an older home around Highcliffe, damp from a failed joint can get into timber and plaster, and that is a much bigger job than renewing the sealant.
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first and agree the price before starting.
Why Highcliffe customers choose us
- Trusted Arbo and Everbuild sealants
- Rated 4.9 stars on Google
- Experience in homes, commercial sites and hotels
- Full insurance on every job
Take a look at how sealant jobs are priced and customer reviews.
Highcliffe: your questions answered
Is Highcliffe in your area for sand mastic?
Yes, Highcliffe is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job.
Is Highcliffe within the area you cover?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do I have to be there?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Do you work for hotels and businesses?
Yes. We have worked for hotels, offices and other businesses, and we’re fully insured.
Should I try DIY first?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs.
How long does the job take?
Typically it takes a few hours per window, depending on the condition of the joints. Bigger jobs take longer.
Can old silicone round a sash window be swapped for sand mastic?
In most cases. The silicone is cut out and the joint cleaned before the sand mastic goes in.
Can you seal over the old sealant?
No. Fresh sealant does not stick to old sealant, and it traps any mould or water underneath. It all has to come out first.
Landlord and commercial work in Highcliffe
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
Frames and glazing around Highcliffe
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.
Letting a property close to Winchester station? Then any sash windows need sound mastic to keep draughts and rain out. Managing a site like All Saints Church of England Primary School? Then the mastic around its windows and doors needs looking after like any other building’s. Homes close to All Saints include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in.
Highcliffe is about 1 mile east of Winchester, in Hampshire. Jobs in Highcliffe get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. Across Hampshire, we cover 683 places, Highcliffe among them. We also work in Southampton, around 10 miles away.
Postcode districts we cover here for sand mastic: SO23, SO21 and SO20. Whether your property is on Moss Road, Vale Road and Domum Road or anywhere close by, we can help. Being close to the M3 and A31, Highcliffe is simple for us to get to for sand mastic. We also cover the places around Highcliffe: Bar End (1 mile south-west), Winchester (1 mile west), Hyde (1 mile north-west), St Cross (1 mile south-west) and Abbotts Barton (1 mile north). Further out, we also cover Eastleigh (6 miles south), Fareham (15 miles south), Andover (13 miles north-west), Totton (13 miles south-west), Chandler's Ford (6 miles south-west) and Hedge End (10 miles south).
Landmarks near Highcliffe
Locally, jobs take us to homes and businesses close to St. Cross Park, Leigh House Hospital and Heart in Hand pub. The closest station to Highcliffe is Winchester station, roughly 1.1 miles north-west of the centre. Other landmarks nearby include St John's Rooms And Chapel (less than half a mile north-west) and Wolvesey Castle (less than half a mile west). Green spaces nearby include Twyford Down and Winnall Moors.
Surface by surface
Sash and case windows
The mastic round a sash window is on show, so a neat, even finish matters.
Stone surrounds
Sand mastic sits naturally against stone. The finish blends with the masonry.
Towns and villages near Highcliffe
What else we do in Highcliffe
Keeping the joints in good condition
To keep the joints looking good and working properly:
- Ask a joiner to look at soft timber first
- Look over the window mastic once a year
- Do not paint over the new mastic
- Avoid heavy scraping on the mastic joint
Look at the mastic when you look over the windows. Catching cracks early keeps repairs small.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.
What affects the cost of sand mastic
We do not publish a price list, because no two jobs are the same. The quote depends on:
- How easy the joints are to reach
- Whether old sealant or filler has to be cut out
- The size of the job
- Whether there’s mould to deal with
The cost depends on how much there is to do, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before we start.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- How many joints, rooms or windows are involved
- Whether it has been sealed before
- Where the job is, and your postcode
- Pictures of the joints, sent by email
For a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. You will have a clear quote before any work starts.