Perth and Kinross · Scotland
New Build Mastic in St Fillans
Specialist new build mastic for St Fillans: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Gaps opening as the house dries out and settles
- Beads laid onto grit and dust from the build
- Messy sealant that spoils new finishes
New build mastic in St Fillans
Across St Fillans, we work for both new-home owners and the builders handing those homes over. Whether it’s one en suite or a run of plots, the method is the same: cut out, clean, prime where needed and reseal neatly. If you have sealant applied over dusty or wet surfaces and second-fix sealing on new plots, we can help.
Many newer homes in Scotland are timber-framed and settle as they dry out, which shows as gaps at skirtings and floor joints. In older homes, timber floors move through the year too.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Location
- St Fillans (PH6)
- Wider area
- Perth and Kinross
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Aftercare tips
How long the joints last depends on use and care. Here’s what we suggest:
- Resist patching a failed seal with a tube from the DIY shop
- Put sealant faults on your snagging list early
- Use the extractor fan every time you shower
- Get a leaking seal dealt with straight away
Leave the sealant for the cure time we give you before showering or bathing. Most silicones need around a day before water reaches them.
A failed seal in a new home lets water into joists, plasterboard and ceilings. Early resealing keeps the job small.
How it works
We work through the job in order: protect, prepare, seal, tidy. For most jobs that takes a few hours for most snagging lists, longer for a run of plots and we leave things clean and tidy. Somewhere like St Fillans may be a longer drive, and the journey is planned ahead. Mention tracks, gates, ferries or anything else about the route.
- First, the list of joints is agreed from your snagging sheet or plot schedule.
- The failed sealant is removed completely down to clean surfaces.
- Joints are vacuumed and cleaned of building dust.
- Primer goes on where the surface and product need it, then the new sealant.
- We tool every joint neatly and tell you when each area can be used.
How to prepare
- On commercial sites, let us know about site rules
- Clear items away from the joints we’re working on
- Tell us if parking is tricky
Getting a quote
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job.
Advice
Work for landlords, hotels and businesses
We also work for property managers and facilities teams. We can quote a run of properties together, and we’re fully insured.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
What the job involves on each surface
Skirting and floors
Floors and skirting move as the house dries and the heating runs. We use a flexible product rather than caulk painted or coloured to suit.
Show homes
We can refresh show-home sealant that has discoloured or been knocked. We cut it out and reseal neatly.
New build mastic around St Fillans
Many new homes in Scotland are timber-framed, so skirting and sealant joints can open up as the building settles. St Fillans 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.
Around St Fillans, as everywhere, new build mastic is only as good as the preparation behind it.
St Fillans is about 20 miles north of Stirling, in Perth and Kinross. Every kind of property in St Fillans is covered for new build mastic, old or new, large or small. The work is guaranteed for a year. Our Perth and Kinross coverage runs to 107 places, St Fillans among them. You can also see our page for Glasgow, about 38 miles away.
We work across PH6 for new build mastic and the streets around it. You will find streets such as Dundurn Walk and Manse Lane, all of which we cover. If you are just outside St Fillans, we cover Comrie (5 miles east), Lochearnhead (7 miles west), Killin (9 miles north-west), Strathyre (10 miles south-west) and Callander (11 miles south).
Around St Fillans
The countryside around St Fillans includes Creag Odhar and Loch Boltachan.
Common questions in St Fillans
Is St Fillans within the area you cover?
Yes, we do. We work across all of Scotland, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Is there a guarantee on new build mastic in St Fillans?
Every job comes with our one-year guarantee, wherever it is. We’re fully insured, and an ARBOMaster approved applicator.
Does someone need to be in?
It depends on the job. For work indoors, someone needs to let us in, while outside work can sometimes be arranged differently.
How long will you be here?
It depends on the size of the job, but as a guide it takes a few hours in a single home. We will give you a better idea when we quote.
Will there be a smell?
Some sealants have a smell while they cure. Ventilation helps.
When is the sealant fully cured?
Cure times vary by product and the conditions. We tell you how long to leave it before we go.
Can new sealant go on top of the old bead?
No. Over-sealing traps mould and water and soon fails. We remove every bit of the old bead before resealing.
Is it messy?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
How we quote for new build mastic
There’s no set price list. What we look at:
- How much old sealant there is and how hard it is to remove
- How many rooms, windows or areas are involved
- Whether there’s mould to deal with
- How much there is to do
A few things move the cost up or down: 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 we need to know
Before you ask for a quote, have a think about:
- Photos by email, if that’s easy
- If someone has resealed it before
- The rough size of the job
- Whether it’s a home or a business
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and add photos by email if you can.
What else we do in St Fillans
Signs you need new build mastic in St Fillans
Fresh sealant can be knocked or cut by trades finishing off. A bead disturbed before it has cured may never seal properly.
The most common problems we see are:
- Cracks appearing as a new home settles
- Leaking shower tray seals in a new home
- Smeared, uneven beads picked up at snagging
- Frame joints opening as the plaster dries
For jobs in and around St Fillans, choosing the right material for each joint is as important as a tidy finish.
Comparing quotes
- How the joint is cleaned and prepared
- Whether the sealant suits the joint
- When the joint can take water or movement
- Who does the work, and how experienced they are
DIY versus a professional finish
If you do try it yourself, take your time over the 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.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.