Hampshire · England
Sand Mastic in Damerham
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Damerham, backed by a 12-month guarantee. Ask us for a quote.
- Modern sealant on a period surround
- Gaps where the frame meets the masonry
- Old cement repairs round a window that have failed
Sand mastic in Damerham
Traditional burnt sand mastic blends with stone and brick surrounds. It’s a good fit for period properties where a modern sealant bead would stand out. We work on sash and case windows, stone surrounds and period & listed homes, and the jobs we see most are old cement repairs round a window that have failed and gaps round a timber door in stone or brick.
Around Damerham, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
A one-year guarantee comes as standard, so you’re covered after we have gone.
- Place
- Damerham (SP6)
- Region
- Hampshire
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Questions from Damerham
Is sand mastic in Damerham guaranteed?
Every job comes with our 12-month guarantee, wherever it is. We’re fully insured, and an ARBOMaster approved applicator.
Is Damerham in your area for sand mastic?
Yes. We work across London and the South East, and Damerham is part of that. You can ring 0345 464 0079 or drop us an email and let us know what needs doing, and we will give you a clear price.
How long does sand mastic take to harden?
Not straight away. It skins first and hardens fully later and we will give you an idea for your job.
Are you fully insured?
Yes. We’re fully insured, and we’ve been doing sealant work for more than 20 years.
Where are you based?
Mr Mastic is based in Crawley. We cover Damerham and the rest of Hampshire.
What is sand mastic?
It’s the traditional filler for the joint round timber windows and doors. It combines sand with a linseed-oil-based binder.
What information do you need?
Only a few details: the address or postcode, what’s wrong and any access issues. Then phone 0345 464 0079 or send us an email.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us and we’re fully insured.
Nearby places to Damerham
What else we do in Damerham
Keeping the joints in good condition
So the new joints stay in good condition:
- Do not paint over the new mastic
- Go gently near the mastic when preparing windows
- Keep modern sealant off the mastic
- Look over the window mastic once a year
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look rather than patching it.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber, which can lead to rot.
Landlords, agents and businesses in Damerham
For anyone letting property in or around Damerham, several properties can go on one quote. Just tell us the addresses and what each one needs, and photos by email help.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
What happens on the day
We bring everything the job needs with us, so you do not need to buy or prepare anything. After a quick look at the joints together, the area is protected and the work begins. Most jobs take a few hours per window, depending on the condition of the joints. Somewhere as small as Damerham, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Before we arrive
- Keep children and pets away from the work area
- Clear items away from the joints we’re working on
- Mention any parking rules near the property
Ask for a quote
Every job is quoted individually, so start by telling us what you need. Simply ring 0345 464 0079 or drop us an email and describe the job, and photos are welcome.
Advice
What we are called out for in Damerham
Some old mastic was never deep enough. A thin layer doesn’t hold well so we make sure the new mastic is the right thickness.
People generally contact us when they notice something like this:
- Crumbling sand mastic round a window
- Mastic round period door frames that has failed
- Cement or filler used on old window joints that has cracked
- Draughts and rain around sash boxes
Around Damerham, as everywhere, sand mastic is only as good as the preparation behind it.
Before booking anyone
- What the quote includes, VAT included or not
- Who turns up on the day
- How the joint is cleaned and prepared
- What happens if the job turns out different
Can I do it myself?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
What sealant work cannot fix
Before booking, it’s worth knowing the limits too:
- Whether work needs listed building consent
- Putty and glazing repairs
- Timber that has rotted
Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Tenement windows
- Period & listed homes
- Stone surrounds
- Timber door frames
- Sash and case windows
- Brick reveals
Different surfaces, different methods
Sash and case windows
Most of our sand mastic work is on sash windows. Each joint round the box is raked out and renewed.
Brick reveals
An open joint at a brick reveal lets weather in. New mastic seals the gap.
Windows and doors in Damerham
With historic houses such as Breamore House (about 3.5 miles north-east) nearby, there’s older building stock in the area around Damerham 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. 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.
If you live in an older home near Church of St George, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Damerham is in Hampshire. We carry out sand mastic for homes and businesses in Damerham and the surrounding area. Damerham is one of 683 places in Hampshire we cover for sand mastic. We also work in Southampton, around 20 miles away.
Jobs for sand mastic in SP6 is quoted and booked the same way as anywhere else. If you need sand mastic at a property on High Street, Green Close and Mill End or a nearby road, our applicators can take on the job. Other places close to Damerham include Sandleheath (1 mile south-east), Rockbourne (2 miles north), Broxhill (2 miles south), Ashford (2 miles south-east) and Alderholt (2 miles south-east). Further out, we also cover Totton (15 miles east), New Milton (15 miles south-east), Ringwood (7 miles south-east), Fordingbridge (3 miles east), St Leonards (8 miles south) and Brockenhurst (15 miles south-east).
Around Damerham
A little further out are Fordingbridge Museum (2.9 miles east) and Cranborne Castle Hill (3.5 miles south-west).