Midlothian · Scotland
New Build Mastic in Old Pentland
Plot mastic for developers and snagging failed sealant in new homes for homes and businesses in Old Pentland and across Midlothian. Fully insured, ARBOMaster approved and guaranteed for a year.
- Untidy sealant flagged on a snagging list
- Cracks appearing as a new home settles
- Sealant work across a run of new homes
When it is not the sealant
To be straight with you, there are a few things sealant won’t fix:
- Baths and trays that move too much for sealant to cope with
- Your warranty claim itself, which is between you and the builder
- Structural cracks in walls or ceilings
Not sure which it is? You can drop us a line at info@mrmastic.co.uk and we’ll tell you honestly before booking.
Where we work in Old Pentland
- Bathrooms & en suites
- Windows & doors
- Skirting & floors
- Plot handovers
- Show homes
- Kitchens
New build mastic in Old Pentland, done properly
Some owners wait for the first year’s movement before having joints redone. That makes sense for small gaps that are just cosmetic, but a failed shower or bath seal shouldn’t wait. We work on kitchens, show homes and skirting & floors, and people most often call us about beads laid onto grit and dust from the build and leaking shower tray seals in a new home.
Around smaller Scottish places like Old Pentland, new homes tend to be single plots or small developments. Each needs its sealant and floor joints finished as carefully as on a big site.
Each job carries a 12-month guarantee.
- Location
- Old Pentland (EH20, EH10)
- Region
- Midlothian
- Guarantee
- One year on every job
- Quote
- A clear price before we start
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Work for landlords, hotels and businesses
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can go on one quote.
What happens on the day
We work through the job in order: protect, prepare, seal, tidy. Typically it takes a few hours for most snagging lists, longer for a run of plots. Around Old Pentland, distance and access matter more than parking. Let us know how to find you and how to reach the joints.
- We look at why each joint failed, including any movement.
- Old sealant is cut out and the joints cleaned.
- 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.
How to prepare
- Clear items away from the joints we are working on
- Where the joints are inside, avoid wetting them before we arrive
- Mention any sign-in or site rules at work premises
Get a quote
Every job is quoted individually, so the first step is telling us about yours. Just send an email to info@mrmastic.co.uk with the details and send photos if you have them.
Related advice
What else we do in Old Pentland
New build mastic around Old Pentland
Timber frame is common in newer Scottish homes, so skirting and sealant joints can open up as the building settles.
For new homes near Slateford station, it’s worth checking the sealant early, while snags are still fresh.
Old Pentland is about 3 miles west of Bonnyrigg, in Midlothian. Homes, rented property, offices and hotels in Old Pentland is covered for new build mastic. The work is guaranteed for a year. Our area takes in 33 places across Midlothian.
Jobs for new build mastic in EH20 and EH10 is quoted and booked the same way as anywhere else. Neighbouring places we cover for new build mastic include Hillend (1 mile west), Bilston (1 mile south), Loanhead (1 mile east), Burdiehouse (1 mile north-east) and Roslin (2 miles south). Within a short drive, we also cover Bonnyrigg (3 miles east), Dalkeith (5 miles east), Penicuik (4 miles south-west), Gorebridge (6 miles south-east), Newtongrange (5 miles east) and Mayfield (6 miles east).
Around Old Pentland
The closest station to Old Pentland is Slateford station, roughly 3.8 miles north-west of the centre. Nearby you’ll also find Cameron Toll Shopping Centre (3.1 miles north) and Princess Margaret Rose Orthopaedic Hospital (1.2 miles north-west). For a walk, there’s Caerketton Hill and The New Leaf Co-op.
Old Pentland: your questions answered
Is Old Pentland within the area you cover?
Yes, we do. Our work covers the whole of Scotland, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
I let a flat near Slateford station. Can you help?
Yes, rental work is part of what we do. Just send an email to info@mrmastic.co.uk and tell us about the property, and we’ll give you a clear quote.
Can new sealant go on top of the old bead?
No. Fresh silicone does not stick to the old layer, so sealing over the top fails quickly. We cut the old bead out completely.
Are you fully insured?
Yes. We are fully insured for domestic and commercial work.
Will it make a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
How do I get a quote for new build mastic in Old Pentland?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote and we’ll talk you through it.
Who should fix failed sealant in a new build?
Start with the builder if you’re in the snagging or warranty period. If it isn’t resolved, we can reseal it properly.
Is there any odour?
There can be a smell while the sealant cures, which fades as it sets. Ventilation helps.
How the job changes by surface
Skirting and floors
Gaps under skirting are one of the most common new-build snags. We seal it with a flexible sealant that copes with the movement.
Kitchens
Worktops in new homes can move slightly as the house dries, which opens gaps along the back. A fresh flexible bead closes them.
When to call us in Old Pentland
Sealant is often one of the last jobs before handover. Joints aren’t always cleaned of dust or primed, so the bead never bonds properly.
People generally contact us after spotting something like this:
- Gaps opening as the house dries out and settles
- Kitchen sealant that has pulled off the wall
- Sealant that never bonded to the surface
- Leaking shower tray seals in a new home
Around Old Pentland, as everywhere, new build mastic is only as good as the preparation behind it.
Before you book anyone
- Is the old sealant removed completely?
- How long to leave it before use
- Are they insured?
- The length of the guarantee
What affects the quote in Old Pentland
For a quick quote, just ask. The main things that affect it are:
- Any mould that needs treating
- How much there is to do
- When we can work, for business premises
- The old material and how stubborn it is
Doing several joints on one visit generally makes better use of the time than several visits. You will get one clear quote for the whole job.
Asking for a quote
You don’t need to know the technical terms. Just tell us:
- Photos by email, if that’s easy
- Whether it has been sealed before
- How we’d reach the joints
- Whether it’s a home or a business
To get a quote, send an email to info@mrmastic.co.uk with the location and a short description of the problem. We’ll give you a clear price before any work starts.
DIY sealant or a professional job?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.