Na h-Eileanan Siar · Scotland
New-build mastic & snagging in Portvoller, Na h-Eileanan Siar
Plot mastic for developers and snagging failed sealant in new homes in Portvoller, with a one-year guarantee on every job. Ask us for a quote.
- Gaps between new skirting and floors
- Frame joints opening as the plaster dries
- Gaps opening as the house dries out and settles
About our new build mastic in Portvoller
Snagging sealant properly means taking the failed bead out completely. New silicone won’t bond to old silicone, so it all comes out before we clean, dry and reseal. We work on plot handovers, show homes and skirting & floors, and the jobs we see most are new-build shower sealant that has already split and beads laid onto grit and dust from the build.
Timber frame is common in newer Scottish homes, and it settles over the first years, so skirting and floor joints can open up. In older homes, timber floors move through the year too.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Where
- Portvoller (HS2)
- Wider area
- Na h-Eileanan Siar
- Cover
- A year, on every job
- Quote
- A clear price before we start
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Common problems we fix in Portvoller
When the heating goes on in the first winter, the house dries fast. Gaps open along skirting, frames and worktops.
People normally contact us when they notice one of these:
- Sealant applied over dusty or wet surfaces
- Frame joints opening as the plaster dries
- Gaps between new skirting and floors
- Worktop and upstand sealant coming away
Whether the job is in Portvoller itself or nearby, the right material for each joint matters as much as a neat finish.
Questions to ask before you book
- Whether they seal over old material or remove it
- Which colour the sealant will be
- What product goes in the joint
- Who does the work, and how experienced they are
How it works
At the end, we look at the finished work together and explain the cure time. The work normally takes a few hours for most snagging lists, longer for a run of plots, depending on the size of the job. Around Portvoller, distance and access matter more than parking. Let us know how to find you and how to reach the joints.
- First we work through your snagging list or plot schedule with you.
- We cut out every bit of the failed or messy sealant.
- Each joint is cleaned of dust and grit, then primed if required.
- A sealant chosen for each area goes in and is tooled smooth.
- Each area is checked and left with its cure time.
How to prepare
- Mention any leaks or damp you’ve noticed
- Try not to wet indoor joints just before the visit
- For business premises, tell us about site rules or sign-in
Ask for a quote
For new build mastic in Portvoller, send an email to info@mrmastic.co.uk. Tell us what the problem is and where, and you will get a clear quote before work begins.
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How we quote for new build mastic
The price is agreed before any work begins. It’s based on:
- The number of rooms or windows
- The number and length of the joints
- How much old sealant there is and how hard it is to remove
- Working hours on commercial sites
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first.
What we need to know
What to tell us when you ask for a quote:
- Any previous sealing or DIY work
- Where the job is, and your postcode
- What’s wrong with the joints now
- Any access issues, like height or stairs
Need a quote? Please drop us a line at info@mrmastic.co.uk with a few details. We’ll explain what we’d do and give you a clear quote before work begins.
Can I do it myself?
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.
If you’ve already had a go yourself, that is fine. We cut it out and start again, so just mention it when you contact us.
Joints and finishes in Portvoller homes
Portvoller is close to the coast. New homes near the sea put their outside mastic to work from day one, so it’s worth checking at snagging. Island jobs need planning around ferries and the weather, so give us as much notice as you can.
Around Portvoller, as everywhere, new build mastic is only as good as the preparation behind it.
Portvoller is about 9 miles east of Stornoway, in Na h-Eileanan Siar. Homes, rented property, offices and hotels in Portvoller is covered for new build mastic. The work is guaranteed for a year. 87 places in Na h-Eileanan Siar are on our list, large and small.
Every address in HS2 is within our area for new build mastic. If you’re just outside Portvoller, we cover Port Mholair (1 mile north-east), Aird (1 mile south-west), Shulishader (2 miles south-west), Sulaisiadar (2 miles south-west) and Garrabost (3 miles south-west). Remote and island addresses need a little more planning, so tell us where you are when you ask for a quote.
Near you in Portvoller
For a walk, there’s Loch an Tiumpan.
Places near Portvoller
What else we do in Portvoller
Why it’s worth doing now in Portvoller
Running a new bead over the builder’s sealant might look tidy for a few weeks, but it will not bond to the old layer. A lasting seal starts with removing the old one completely. In a place like Portvoller, small leaks are easy to put off, but water through a failed joint keeps working away until it’s fixed.
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
Why choose Mr Mastic in Portvoller
- We never seal over old sealant
- ARBOMaster approved applicator
- Over 20 years’ experience
- Every job guaranteed for a year
Portvoller questions
Will you come out to Portvoller?
Yes, Portvoller is covered. Our work covers the whole of Scotland, islands included, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Is Portvoller in your area for new build mastic?
Yes. Our work covers the whole of Scotland, and Portvoller is part of that. Just drop us a line at info@mrmastic.co.uk with a few details of the job, and we’ll give you a clear price.
Can I add another job to the visit?
Yes, and it often makes sense. Doing several areas at once is normally more efficient, so mention them when you ask for a quote.
Can new sealant go on top of the old bead?
No. New silicone won’t bond to old silicone, so sealing over the top fails quickly. The old sealant always comes out first.
Is it normal for sealant to crack in a new home?
Cracking in the first couple of years is common. Rushed application on dusty surfaces makes it worse.
I rent my home. Can I book you?
Yes, though it’s best to check with your landlord first. Many landlords are glad to have it sorted.
Do you work for hotels and businesses?
Yes. Larger jobs can be planned room by room or area by area to suit the site.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned before resealing.
What the job involves on each surface
Skirting and floors
Wet-area floor joints need a flexible seal. They get a flexible, water-resistant sealant.
Plot handovers
Plot mastic is carried out to the developer’s schedule. Each joint is cleaned and primed where needed to keep callbacks down.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Do not wait for the house to settle if water is getting through
- Ventilate bathrooms well, especially in the first year
- Check bath and shower seals every few months as the house settles
- Record problems with dated pictures
Keep pictures of the joints and any snagging correspondence with your builder. It helps if anything else comes up during the warranty period.
The sooner you deal with untidy or cracking sealant, the less there is to put right. Left alone, a small crack can become a leak over time.