Na h-Eileanan Siar · Scotland
Sand Mastic in Locheport
Sand mastic in Locheport from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Crumbling sand mastic round a window
- Cement or filler used on old window joints that has cracked
- Mastic round period door frames that has failed
Can I do it myself?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
Sand mastic in Locheport, done properly
Traditional burnt sand mastic that sits naturally against stone and brick. It suits period and listed homes, where modern sealant can look out of place. Typical jobs include gaps round a timber door in stone or brick and weathered mastic on the most exposed windows, across period & listed homes, timber door frames and stone surrounds.
In and around a place like Locheport, homes range from older stone-built cottages to newer houses. Exposed frames and sills take the full force of wind-driven rain, so the mastic there works hard.
Each job carries a 12-month guarantee, whatever its size.
- Location
- Locheport (HS6)
- Wider area
- Na h-Eileanan Siar
- Cover
- One year on every job
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Aftercare tips
A little care helps the new joints last. Our advice:
- Don’t run silicone over sand mastic
- Don’t paint over the new mastic
- Renew mastic before redecorating the windows
- Get any rot dealt with first
Leave the new mastic unpainted, which is the traditional advice. If you are redecorating, ask us first.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber, which can lead to rot.
Windows and doors in Locheport
Locheport is within about 1 mile 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. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that.
In and around Locheport, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
Locheport (Gaelic: Loch Euphort) is in Na h-Eileanan Siar. Every kind of property in Locheport can book us for sand mastic, old or new, large or small. Every job comes with our one-year guarantee. Across Na h-Eileanan Siar, we cover 87 places, Locheport among them.
Our applicators cover all of HS6 for sand mastic. Locheport is on the B894, so it’s easy for us to get to. We also cover the places around Locheport: Claddach Kirkibost (4 miles west), Claddach Kyles (5 miles north-west), Ardheisker (5 miles north-west), Lochmaddy (6 miles north-east) and Balivanich (7 miles south-west). Island and remote addresses take a little more planning, so tell us where you are when you ask for a quote.
Around Locheport
For a walk, there’s Loch 'ic Colla.
How it works
We keep the work tidy and contained to the area we’re working on, so you can carry on as normal. The job usually takes a few hours for a single window, longer for several, and we explain the cure time before we leave. For a place like Locheport, longer drives are planned in advance. Mention tracks, gates, ferries or anything else about the route.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
How to prepare
- Let us know if you’ve seen damp or leaks
- Mention if the joints have been sealed before
- For indoor joints, keep the area dry beforehand if you can
Ask for a quote
Every job is quoted individually. Just drop us a line at info@mrmastic.co.uk with the details, and photos are welcome.
Advice
Landlords, agents and businesses in Locheport
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Housing providers, facilities teams and property managers book us too in Locheport and across Na h-Eileanan Siar. Several sites can be quoted together, and we are fully insured.
When to call us in Locheport
Age is the main cause. Even well-laid mastic needs renewing in time, depending on exposure and upkeep.
The problems people normally mention when they call include:
- Failed mastic on an exposed elevation
- Gaps where the frame meets the masonry
- A silicone bead on a sash window that spoils the look
- Mastic that needs renewing before redecorating
For jobs in and around Locheport, choosing the right material for each joint is as important as a tidy finish.
Comparing quotes
- How long the guarantee is
- Which colour the sealant will be
- How long to leave it before use
- Whether all the old sealant comes out first
Why deal with it now?
Not every filler suits an old window surround. Sand mastic matches what was there, which can matter on listed and conservation-area homes. Out of town in Scotland, exposed walls take a lot of weather, and once water gets behind a failed joint, damp in stone or harled walls is slow to dry out.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Ask us for a quote and we’ll go through it with you.
Why book with us
- Every job guaranteed for a year
- Anti-fungal sanitary silicone in wet areas
- Homes, businesses and hotels
- 4.9 on Google from 180+ five-star reviews
Read what affects the cost and what customers say.
Other services in Locheport
Questions from Locheport
Does the coastal weather in Locheport affect outside sealant?
Near the sea, outside joints face more wind, rain and salt than they would inland, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
Is Locheport within the area you cover?
Yes, smaller places are covered as well as towns. We work across all of Scotland, including the islands, where work is planned around ferry crossings. Let us know about access, parking and anything unusual about getting there when you book.
Can you do several jobs on one visit?
Yes. More than one area can be quoted together.
Is it possible to take out silicone and use sand mastic instead?
In most cases. The silicone is cut out and the joint cleaned before the sand mastic goes in.
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.
When will the new mastic be hard?
A skin forms quite soon, but full hardening takes longer. We will tell you what to expect for your job.
I’m a tenant. Can you help?
Yes. Check with your landlord; we can send the quote to them too.
Where do you work from?
We are based in Crawley, and we work across South East England, London and Scotland.
When something else is needed
Before you book, it’s worth knowing the limits:
- Damaged stone surrounds
- Sashes that need overhauling
- Rotten sashes, sills or window boxes (a joiner’s job)
If you are not sure, just drop us a line at info@mrmastic.co.uk and we’ll give you a straight answer.
What we seal
- Timber door frames
- Period & listed homes
- Stone surrounds
- Brick reveals
- Sash and case windows
- Tenement windows