Scottish Borders · Scotland
Chirnside New Build Mastic
New build mastic across Chirnside and nearby, with old sealant always removed completely and a 12-month guarantee.
- Shower seals failing in the first year or two
- Joints pulling apart as timber shrinks
- Cracked sealant around new window and door frames
The process
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The job generally takes a few hours for most snagging lists, longer for a run of plots, including the tidy-up. Outdoor work around Chirnside depends on the weather, as sealant needs a dry surface, so external jobs may need to move if the day turns wet. Indoor work goes ahead whatever the weather.
- We look at why each joint failed, including any movement.
- Old sealant is cut out and the joints cleaned.
- Joints are dried and primed where the product calls for it.
- 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
- For business premises, tell us about site rules or sign-in
- Let us know about parking restrictions
- Try not to wet indoor joints just before the visit
How to get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
Advice
New build mastic in Chirnside
Across Chirnside, we work for both new-home owners and the builders handing those homes over. One shower or a whole phase of plots, the method doesn’t change: remove, clean, prime where needed, then a neat new bead. We work on bathrooms & en suites, windows & doors and show homes, and the jobs we see most are new-build shower sealant that has already split and sealant that never bonded to the surface.
New homes in smaller Scottish places are often single plots, self-builds or small developments. Each needs its sealant and floor joints finished as carefully as on a big site.
A one-year guarantee comes as standard, so you’re not left on your own once the job is done.
- Location
- Chirnside (TD11)
- Wider area
- Scottish Borders
- Cover
- One year on every job
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
When it is not the sealant
We won’t take on work that will not last, so these are the limits:
- Settlement cracks that need a surveyor
- Your warranty claim itself, which is between you and the builder
- Leaks from pipes, valves or wastes, which need a plumber
If in doubt, drop us a line at info@mrmastic.co.uk and we’ll say what we think before booking.
Surfaces we seal
- Windows & doors
- Bathrooms & en suites
- Skirting & floors
- Kitchens
- Plot handovers
- Show homes
FAQs for Chirnside
Do you cover Chirnside for new build mastic?
Yes. Our work covers the whole of Scotland, and Chirnside is part of that. You can email us at info@mrmastic.co.uk and let us know what needs doing.
Can you help a landlord with a rental near Reston station?
Yes. We work for landlords and agents as well as homeowners. You can email us at info@mrmastic.co.uk with the details for a clear quote.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us, and we are fully insured.
Do you work for developers?
Yes. We seal plots to the developer’s programme ready for handover. Get in touch with the number of plots and the scope for a clear quote.
Is it worth trying it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
Do you have insurance?
Yes, we are fully insured for domestic and commercial work.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
How long before the joint can be used?
Different products cure at different speeds, so follow the cure time we give you when we finish.
What new build mastic looks like in Chirnside
Many new homes in Scotland are timber-framed, so skirting and sealant joints can open up as the building settles.
For new homes near Reston station, it’s worth checking the sealant early, while snags are still fresh. In and around Chirnside, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Chirnside is in the Scottish Borders. We carry out new build mastic for homes and businesses in Chirnside. We cover 89 towns and villages across the Scottish Borders. There’s also a page for Edinburgh, roughly 40 miles from Chirnside.
Here we cover the TD11 postcode area for new build mastic. We cover properties on Main Street West End, Main Street East End and Windram Road. Other places close to Chirnside include Reston (4 miles north), Ayton (4 miles north-east) and Preston (5 miles west).
Around Chirnside
For rail, the closest station is Reston station, about 3.5 miles north of the centre. A little further out are Blackadder House (1.6 miles south-west) and Knoll Hospital (5.3 miles west).
Aftercare tips
Looking after new joints is easy, and it makes a real difference:
- Resist patching a failed seal with a tube from the DIY shop
- Photograph failed sealant before it’s redone
- Keep water off fresh sealant until it has cured
- Watch for new gaps as the house dries out
Watch the joints as the house settles. Hairline gaps can open as timber and plaster dry.
Lifting sealant traps moisture and mould behind it. Dealing with it before it goes black keeps the job straightforward.
What affects the quote in Chirnside
Call for a quick quote. What matters most is:
- How easy the joints are to reach
- The size of the job
- How many areas need sealing
- Mould in or behind the old joints
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
What we need to know
There’s no need for technical detail. Just tell us:
- Where the job is, and your postcode
- A few pictures by email, if you can
- What the problem is, such as mould, gaps, leaks or cracking
- Whether it has been sealed before
For new build mastic in Chirnside, email us at info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and you’ll get a clear quote before any work starts.
Why it’s worth doing now in Chirnside
If you are still in the builder’s snagging or warranty period, ask them to put it right first. If it’s slow, or the same joint keeps failing, a proper reseal from a specialist is the next step. When the nearest tradesperson is a drive away, it’s tempting to leave a small leak, but water behind a failed seal does the most damage when nobody’s watching.
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
What you get with us
- Anti-fungal silicone where joints get wet
- Colour picked to suit the job
- We agree the colour with you first
- White, clear, grey or coloured to suit, where the product allows
Read our cost guide and what customers say.
How the job changes by surface
Windows and doors
The gap between a new frame and its plaster reveal often opens up. We remove cracked sealant and apply a flexible one.
Kitchens
New-kitchen sealant is often applied in a rush. We take it out and reseal neatly, colour-matched where it shows.
Should I try it myself first?
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
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.