Hampshire · England
Cole Henley Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Cole Henley and across Hampshire. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Mastic round period door frames that has failed
- Mastic worn away on windows facing the weather
- Mastic that needs renewing before redecorating
How we handle sand mastic in Cole Henley
We work across Cole Henley renewing sand mastic on sash windows and doors. Each joint is raked out, prepared and pointed by hand for a neat, traditional finish. If you’re dealing with crumbling sand mastic round a window and silicone on a period window that looks wrong, we can put it right, whatever the surface.
Outdoor sealant needs dry, clean surfaces, so work on frames around Cole Henley is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
Whatever the size of the job, it’s backed by our one-year guarantee in Cole Henley and across Hampshire.
- Where
- Cole Henley (RG28)
- Region
- Hampshire
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
For landlords and businesses
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
We also work for property managers and facilities teams in Cole Henley and across Hampshire. Several sites can be quoted together, and we are fully insured.
What happens if it’s left?
Draughts round a sash window are not always the sashes. Open mastic joints round the box can let air in and new mastic seals them. Around Cole Henley, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
The cost depends on the size of the job, how hard the old material is to remove and access to the work. You’ll have a clear quote before any work starts.
Why Cole Henley customers choose us
- Trusted Arbo and Everbuild sealants
- 4.9 on Google from 180+ five-star reviews
- Tidy, careful work
- An ARBOMaster approved applicator
See our cost guide and what customers say.
Quotes for sand mastic in Cole Henley
The quote reflects the job in front of us. We take into account:
- The number of rooms or windows
- Whether the work is at height
- The number and length of the joints
- Mould in or behind the old joints
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 the work is at height. We take all of that into account in your quote.
What to tell us for a quote
To help us quote quickly, let us know:
- If someone has resealed it before
- Roughly how big the job is
- What’s wrong with the joints now
- The address or postcode of the job
Quotes start with a quick conversation. 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, call 0345 464 0079 or send us an email.
Places near Cole Henley
What else we do in Cole Henley
How the visit works
You do not need to clear the whole room or building, only the area right around the joints. Everything nearby is protected, and the job takes a few hours per window, depending on the condition of the joints in most cases. Somewhere like Cole Henley needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic is not too thick.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Preparing for the visit
- Let us know about stairs, lifts or work at height
- Mention any parking rules near the property
- For business premises, tell us about site rules or sign-in
Get a quote
Need a quote? Please ring 0345 464 0079 or email us with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Read more
What sand mastic looks like in Cole Henley
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For site and facilities teams at buildings such as Testbourne Community School, its window and door frames need their mastic kept sound, just like a home’s.
Cole Henley is about 7 miles north-east of Andover, in Hampshire. Cole Henley gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Our area takes in 683 places across Hampshire, large and small. We also work in Reading, around 20 miles away.
Postcode districts we cover here for sand mastic: RG28. Nearby, we also carry out sand mastic in Wells-in-the-Field (2 miles south), Freefolk (2 miles south-east), Whitchurch (2 miles south), Wadwick (3 miles north-west) and St Mary Bourne (3 miles west). Further out, we also cover Basingstoke (10 miles east), Winchester (14 miles south), Andover (7 miles south-west), Tadley (10 miles north-east), Hyde (13 miles south) and Popley (11 miles east).
What’s near Cole Henley
Cole Henley’s nearest station is Whitchurch (Hampshire) station, about 1.4 miles south of the centre. Open spaces near Cole Henley include Ladle Hill.
Cole Henley questions
Can you do sand mastic in Cole Henley?
Yes. Our work covers London and the South East, and Cole Henley is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we’ll give you a clear quote.
Do you cover smaller places like Cole Henley?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
How long will you be here?
Typically it takes a few hours per window, depending on the condition of the joints. Larger jobs naturally take longer, and we’ll tell you how long to expect.
Do you have insurance?
Yes, we are fully insured.
Should I try DIY first?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Can you replace silicone on a period window with sand mastic?
In most cases. We remove the silicone and clean the joint before the sand mastic goes in.
Are you ARBOMaster approved?
Yes. We’re approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Do you take out the old sealant first?
Always. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
How the job changes by surface
Brick reveals
Loose mastic comes out and deep gaps are packed before pointing.
Stone surrounds
Stone surrounds suit sand mastic well. The finish blends with the masonry.
How to look after the new joints
A little care helps the new joints last. Our advice:
- Plan mastic work ahead of painting
- Avoid heavy scraping on the mastic joint
- Make sure water runs off the sill
- Leave the new mastic unpainted
Keep paint scrapers and sanders off the mastic when redecorating. Hard scraping can loosen it.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber and timber that stays wet can rot.
Signs you need sand mastic in Cole Henley
Scraping and sanding before painting can loosen old mastic. Many people find it crumbling when they prepare the windows, which is a good time to renew it.
Keep an eye out for any of the following:
- Tired mastic found when preparing windows for paint
- Weathered mastic on the most exposed windows
- Gaps where the frame meets the masonry
- Mastic round period door frames that has failed
For landlords with property near Whitchurch (Hampshire) station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Before you book anyone
- Is the old sealant removed completely?
- How the colour is chosen
- What happens if the job turns out different
- What insurance they hold