Highland · Scotland
New Build Mastic in Lewiston
New-build sealant joints in Lewiston need attention? We remove the old material, prepare the joints and seal them properly, with a 12-month guarantee.
- Cracked sealant around new window and door frames
- Smeared, uneven beads picked up at snagging
- Sealant applied over dusty or wet surfaces
New build mastic for homes and businesses in Lewiston
New homes move as they dry out. Timber shrinks, plaster dries and baths and trays bed down, so sealant that was laid quickly before handover often cracks. We work on skirting & floors, plot handovers and show homes, and people most often call us about skirting joints opening in the first winter and cracked sealant around new window and door frames.
Timber frame is common in newer Scottish homes, and it settles over the first years, which shows as gaps at skirtings and floor joints. In older homes, timber floors move through the year too.
There’s a 12-month guarantee on every job, whatever its size.
- Where
- Lewiston (IV63)
- Region
- Highland
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Landlords, agents and businesses in Lewiston
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
Failed sealant is one of the commonest items on a check-out report. Several properties can be quoted together.
What sealant work cannot fix
It helps to know what we cannot do too:
- Leaking fittings rather than failed sealant
- Your warranty claim itself, which is between you and the builder
- Movement caused by a poorly fitted tray or bath
If in doubt, send an email to info@mrmastic.co.uk and we’ll say what we think.
Surfaces we seal
- Windows & doors
- Kitchens
- Plot handovers
- Skirting & floors
- Bathrooms & en suites
- Show homes
How the visit works
At the end, we look at the finished work together and tell you how long to leave it. The work normally takes a few hours in a single home, depending on the amount of work. Outside jobs in Lewiston need a dry day, because sealant will not bond to a wet joint, so an outdoor job can move if the forecast changes. Work indoors is not affected.
- We look at why each joint failed, including any movement.
- Old sealant is cut out and the joints cleaned.
- We make sure the joints are dry and prime them if needed.
- New sealant goes in, with baths filled first so they’re at their heaviest.
- We check every joint and leave you with the cure times.
How to prepare
- Keep children and pets away from the work area
- Clear items away from the joints we are working on
- For indoor joints, keep the area dry beforehand if you can
Getting a quote
To get a quote, drop us a line at info@mrmastic.co.uk and tell us where the job is and what the problem looks like. You’ll have a clear quote before any work starts.
Advice
Aftercare tips
So the new joints stay in good condition:
- Look at the sealant regularly in the first couple of years
- Report sealant problems to your builder during the snagging period
- Do not seal over failed sealant yourself
- Avoid scourers and strong chemicals on sealant
Ventilation matters in a new home, which is still drying out. Run the fan or open a window after bathing so moisture does not sit on the sealant.
Leave a failed new-build seal and water can reach the floor and the ceiling below. Catching it early keeps the fix to the sealant and protects the rest of the house.
Different surfaces, different methods
Bathrooms and en suites
Shower trays in new homes often move slightly in the first year. We reseal once the old bead is fully out and baths are filled before sealing.
Kitchens
Worktops in new homes can move slightly as the house dries, opening gaps behind the upstand. A fresh flexible bead closes them.
Towns and villages near Lewiston
Other services in Lewiston
When to call us in Lewiston
New homes are full of moisture from plaster, screed and concrete, which takes a year or two to dry out. Drying timber shrinks and pulls joints apart.
If you can see any of these, it’s time to have the joints looked at:
- Worktop and upstand sealant coming away
- Cracked sealant around new window and door frames
- Cracks appearing as a new home settles
- Sealant applied over dusty or wet surfaces
In and around Lewiston, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Comparing quotes
- How much experience the applicator has
- How the joint is cleaned and prepared
- How the colour is chosen
- How hidden problems are handled
Should I try it myself first?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Lewiston questions
What guarantee comes with new build mastic in Lewiston?
Every job comes with our 12-month guarantee, wherever it is. We’re also fully insured and ARBOMaster approved.
Can you do new build mastic in Lewiston?
Yes, Lewiston is within the area we cover. We work across all of Scotland. Just email us at info@mrmastic.co.uk with a few details of the job, and we will send you a clear quote.
Are you fully insured?
Yes. We’re fully insured for every job we do.
Can you work from my snagging list?
Yes. Snagging lists are a common starting point for us. We agree the sealant items with you before any work starts.
Do you work for letting agents?
Yes, regularly. We can quote for several properties at once, and between tenancies is a good time for the work.
Is there any odour?
Some sealants have a smell while they cure, which fades as it sets. Ventilation helps.
Are you an approved applicator?
Yes. We hold ARBOMaster approved applicator status.
Can tenants book the work?
We can work for tenants, landlords or agents. Get your landlord’s agreement first.
New build mastic in Lewiston: local notes
Timber frame is common in newer Scottish homes, so skirting and sealant joints can open up as the building settles. Lewiston is in the west of Scotland, which is wetter than the east, which means plot mastic and the sealant in new homes has to cope with a lot of rain.
For jobs in and around Lewiston, choosing the right material for each joint is as important as a tidy finish.
Lewiston is about 13 miles south-west of Inverness, in Highland. Whether you are in the middle of Lewiston or further out, new build mastic is available for homes and businesses alike, from flats and houses to offices and hotels. We cover 253 towns and villages across Highland, large and small.
Here we cover the IV63 postcode area for new build mastic. That includes homes and businesses on Dal of Borlum, Carn Glas and Carriers Croft and the roads around them. If you are just outside Lewiston, we cover Drumnadrochit (1 mile north), Torness (4 miles east), Gorthleck (6 miles south), Dores (7 miles north-east) and Kiltarlity (8 miles north). Further out, we also cover Inverness (13 miles north-east), Merkinch (14 miles north-east), Hilton (13 miles north-east), Crown (14 miles north-east), Millburn (14 miles north-east) and Muir of Ord (13 miles north). Island and remote addresses take a little more planning, so please mention your location when you email us at info@mrmastic.co.uk.
Around Lewiston
In Lewiston, that means homes and buildings near Drumnadrochit Hotel, among other places. Nearby you’ll also find Urquhart Castle (1.3 miles east) and Urquhart Castle Visitor Centre (1.2 miles east). The countryside around Lewiston includes Loch Ness.