Edinburgh · Scotland
New-build mastic & snagging in Longstone, Edinburgh
New build mastic in Longstone from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Skirting joints opening in the first winter
- Shower seals failing in the first year or two
- Cracks appearing as a new home settles
About our new build mastic in Longstone
If your new home has a leaking shower seal, open skirting joints or untidy sealant, we can help. While the builder’s snagging or warranty period runs, report it to them first. If you’re dealing with sealant work across a run of new homes and skirting joints opening in the first winter, we can help, on windows & doors, show homes and plot handovers alike.
Scotland’s cities are still adding new flats and houses, and in new homes, sealant and floor joints are often among the first snags.
Whatever the size of the job, it’s backed by our 12-month guarantee.
- Location
- Longstone (EH14, EH11, EH13)
- Region
- Edinburgh
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
How the job changes by surface
Plot handovers
We work through plots to your schedule, sealing each room ready for handover. Joints are prepared properly before sealing.
Show homes
Tired or marked sealant in a show home can be renewed. We cut it out and reseal neatly.
More services for Longstone
New build mastic around Longstone
Many new homes in Scotland are timber-framed, and as the frame dries and settles, skirting and sealant joints can open up.
In and around Longstone, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Longstone is about 3 miles south-west of Edinburgh, in Edinburgh. We carry out new build mastic for householders, landlords and businesses in Longstone. Longstone is one of 175 towns and villages in Edinburgh where we work.
We cover every part of the EH14, EH11 and EH13 postcode area for new build mastic and the streets around it. Whether your property is on Redhall Road, New Mart Road and Dumbryden Road or a nearby road, our applicators can take on the job. With the A71 close by, Longstone is easy for our applicators to reach for new build mastic. We also cover the places around Longstone: Parkhead (1 mile north-east), Redhall (1 mile east), Kingsknowe (1 mile south), Saughton (1 mile north-west) and Chesser (1 mile north-east). Within a short drive, we also cover Edinburgh (3 miles north-east), Leith (5 miles north-east), Bonnington (5 miles north-east), Greenside (4 miles north-east), Broughton (4 miles north-east) and Bellevue (4 miles north-east).
What’s near Longstone
In Longstone, that means homes and buildings near Saughton Park, Balgreen Primary School and Firrhill High School. There’s a railway station in Longstone itself: Kingsknowe station. Well-known places in the area include Craiglockhart Hydropathic (0.9 miles south-east) and The Gyle Shopping Centre (2.4 miles north-west). Green spaces nearby include Craiglockhart Hill and The New Leaf Co-op.
What we’re called out for in Longstone
On many sites, sealant goes on in the final rush before handover. Joints are not always cleaned of dust or primed, and the sealant sits on grit instead of the surface.
These are the problems we are asked about most:
- Shower seals failing in the first year or two
- Kitchen sealant that has pulled off the wall
- Beads laid onto grit and dust from the build
- Second-fix sealing on new plots
If you’ve bought a new home near Kingsknowe station, the sealant around baths, showers and frames is worth checking in the first year or two.
Questions to ask before you book
- What product goes in the joint
- How much experience the applicator has
- When the joint can take water or movement
- What preparation is included
How it works
Before we leave, we go over the finished joints with you and explain the cure time. The work normally takes a few hours in a single home, depending on the size of the job. In a Scottish city, a lot of jobs are in tenement flats, up a common stair from a shared close. For a job in Longstone, tell us the floor, how the door entry system works and where we can park nearby.
- We look at why each joint failed, including any movement.
- We remove the failed sealant and clean the joints.
- 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.
Preparing for the visit
- Let us know about parking restrictions
- Where the joints are inside, avoid wetting them before we arrive
- Mention if the joints have been sealed before
How to get a quote
For a quote, drop us a line at info@mrmastic.co.uk with the location and a short description of the problem. You’ll have a clear quote before we start.
Read more
Should I try it myself first?
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so just mention it when you contact us.
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.
Longstone questions
What guarantee comes with new build mastic in Longstone?
All our work, in Longstone and everywhere else, comes with a 12-month guarantee. We’re fully insured, and an ARBOMaster approved applicator.
I let a flat near Kingsknowe station. Can you help?
Yes, landlords and agents are among the people we work for. You can send an email to info@mrmastic.co.uk with the details for a clear quote.
How much does new build mastic cost in Longstone?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote and we will talk you through it.
How long will you be here?
A typical job takes anything from a few hours to several days, depending on the number of plots. We’ll confirm how long when we quote.
Do you have insurance?
Yes. We’re fully insured.
Do you work for developers?
Yes. We carry out plot mastic and second-fix sealing for builders and developers. Send the schedule and any specification and we will give you a quote.
Do you use white or clear sealant?
That depends on what the joint meets: white or clear for most sanitary joints, colours for worktops, floors and frames. We agree the colour before work begins.
Do the sealants smell?
Some sealants have a smell while they cure, but it fades. Opening a window helps.
Keeping the joints in good condition
So the new joints stay in good condition:
- Ventilate bathrooms well, especially in the first year
- Avoid scourers and strong chemicals on sealant
- Report sealant problems to your builder during the snagging period
- Do not wait for the house to settle if water is getting through
Photograph failed sealant before it’s redone and keep the builder’s replies. It’s useful if you need to raise other issues later.
The sooner you deal with untidy or cracking sealant, the less there is to put right. Small faults turn into leaks if left in a busy bathroom.
What sealant work cannot fix
We’d rather tell you now than do work that won’t last, so these are the limits:
- Plumbing faults behind the sealant
- Disputes or warranty claims with your builder
- Movement caused by a poorly fitted tray or bath
If in doubt, drop us a line at info@mrmastic.co.uk and we’ll say what we think.
Surfaces we seal
- Bathrooms & en suites
- Kitchens
- Plot handovers
- Show homes
- Windows & doors
- Skirting & floors
Work for landlords, hotels and businesses
We also work for property managers and facilities teams in Longstone and across Edinburgh. We can quote a run of properties together, and we are fully insured.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we will give you a quote.