Scottish Borders · Scotland
Greenlaw New Build Mastic
New build mastic across Greenlaw and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Cracks appearing as a new home settles
- Plot mastic for developers ahead of handover
- Untidy sealant flagged on a snagging list
New build mastic for homes and businesses in Greenlaw
A new build should have a neat, sound bead at every joint. When the finish is smeared, patchy or already cracking, it’s worth putting right early, before water reaches anything behind it. We work on show homes, bathrooms & en suites and kitchens, and the jobs we see most are cracked sealant around new window and door frames and second-fix sealing on new plots.
Around smaller Scottish places like Greenlaw, new homes tend to be single plots or small developments. They need their sealant and floor joints finished just as carefully as on a big site.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Location
- Greenlaw (TD10)
- Wider area
- Scottish Borders
- Guarantee
- One year on every job
- Quotes
- A clear price before we start
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
What new build mastic looks like in Greenlaw
Many new homes in Scotland are timber-framed, and as the frame dries and settles, skirting and sealant joints can open up.
For jobs in and around Greenlaw, choosing the right material for each joint is as important as a tidy finish.
Greenlaw is about 15 miles north-east of Galashiels, in the Scottish Borders. Whether you are in the middle of Greenlaw or further out, we cover new build mastic for every kind of property. Greenlaw is one of 89 places in the Scottish Borders where we work. There’s also a page for Edinburgh, about 33 miles away.
We work across the TD10 postcode area for new build mastic. That includes homes and businesses on The Square, East High Street and West High Street and the roads around them. Neighbouring places we cover for new build mastic include Eccles (4 miles south-east), Gordon (4 miles south-west), Stichill (5 miles south), Gavinton (5 miles north-east) and Westruther (5 miles north-west). Larger places within reach include Galashiels (15 miles south-west), Kelso (7 miles south), Duns (7 miles north-east), Melrose (13 miles south-west), Earlston (10 miles south-west) and Lauder (11 miles west).
Landmarks near Greenlaw
Typical jobs here are in homes near Cross Keys pub, among other places. Other landmarks nearby include Hume Castle (2.9 miles south). Green spaces nearby include Hule Moss.
Do you need new build mastic in Greenlaw?
Later trades and the final clean can damage fresh sealant. A bead disturbed before it has cured may never seal properly and it shows once the home is in use.
Keep an eye out for these signs:
- Untidy sealant flagged on a snagging list
- Cracks appearing as a new home settles
- Second-fix sealing on new plots
- Gaps between new skirting and floors
Around Greenlaw, as everywhere, new build mastic is only as good as the preparation behind it.
Before booking anyone
- What product goes in the joint
- Whether you can choose the colour
- What the quote includes, VAT included or not
- Who does the work, and how experienced they are
Can I do it myself?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
FAQs for Greenlaw
Do you cover smaller places like Greenlaw?
Yes, smaller places are covered as well as towns. We work across all of Scotland. Just mention lanes, gates or anything else about the route when you book.
Is there a guarantee on new build mastic in Greenlaw?
All our work, in Greenlaw and everywhere else, comes with a 12-month guarantee. We’re fully insured, and an ARBOMaster approved applicator.
When is the sealant fully cured?
Many sealants skin over quickly but take longer to cure fully. We’ll give you the cure time for the product we used.
What colour sealant will you use?
Most bathroom joints are white or clear, but other colours are available. We choose one to suit the room.
When is the best time to reseal in a new build?
For failed seals that let water through, the best time is now. For small cosmetic gaps, waiting until the house has settled can save doing them twice.
Is it worth trying it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
How do I get a quote for new build mastic in Greenlaw?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Can landlords and businesses book you?
Yes. As well as householders, we work for landlords, agents, businesses and hotels in Greenlaw.
How the visit works
On the day, there’s very little for you to do. Show us the job and we will take it from there. The job generally takes a few hours for most snagging lists, longer for a run of plots. In smaller Scottish places, parking is normally less of an issue than access and distance. Tell us how to find the property and how to reach the work, and the visit is planned around that.
- Each joint is checked for movement before work begins.
- We remove the failed sealant and clean the joints.
- 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.
Getting ready for the visit
- Tell us about any water getting in
- Move anything stored near the joints
- Plan for the work area to be out of bounds to pets and children
Getting a quote
For a quick quote, get us on the phone, or email us if that is easier. Describe what needs sealing and we’ll talk you through the work before giving you a price.
Read more
Keeping the joints in good condition
Aftercare is simple:
- Keep water off fresh sealant until it has cured
- Put sealant faults on your snagging list early
- Look at the sealant regularly in the first couple of years
- Open a window or run the fan after bathing
Keep photos of the joints and any snagging correspondence with your builder. It’s useful if you need to raise other issues later.
Lifting sealant traps moisture and mould behind it. Dealing with it before it goes black keeps the job straightforward.
Towns and villages near Greenlaw
Other services in Greenlaw
How the job changes by surface
Show homes
Tired or marked sealant in a show home can be renewed. The old bead comes out and a clean new one goes in.
Kitchens
As a new house dries, worktops and walls shift a little, opening gaps behind the upstand. A fresh flexible bead closes them.
Quotes for new build mastic in Greenlaw
We quote each job individually. This is what makes a difference:
- Whether there’s mould to deal with
- The size of the job
- Whether old sealant or filler has to be cut out
- Whether the work is at height
What it costs depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You’ll have a clear quote before any work starts.
What to tell us for a quote
What to tell us when you ask for a quote:
- The address or postcode of the job
- What’s wrong with the joints now
- Pictures of the joints, sent by email
- Any access issues, like height or stairs
We don’t publish a price list, because every job is different. Instead, we give you a clear quote for your job. To get started, email us at info@mrmastic.co.uk.
When it isn’t the sealant
Sealant isn’t the answer to every problem, and we’d rather say so up front. Sealant will not put right:
- Cracking that points to a structural problem
- Plumbing faults behind the sealant
- Deciding who is responsible under a builder’s warranty
If you are not sure, just email us at info@mrmastic.co.uk and we will give you a straight answer before booking.
What we seal
- Windows & doors
- Skirting & floors
- Show homes
- Kitchens
- Plot handovers
- Bathrooms & en suites