Midlothian · Scotland
New-build mastic & snagging in North Middleton, Midlothian
Plot mastic for developers and snagging failed sealant in new homes in North Middleton, with a one-year guarantee on every job. Ask us for a quote.
- Gaps opening as the house dries out and settles
- Gaps between new skirting and floors
- Second-fix sealing on new plots
About our new build mastic in North Middleton
For builders and developers, we work through plots to the schedule you give us. We seal bathrooms, kitchens, windows, doors and skirting so plots are ready to hand over using the right product for each joint. Common call-outs are for leaking shower tray seals in a new home and second-fix sealing on new plots, across windows & doors, skirting & floors and plot handovers.
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.
We stand behind the work with a one-year guarantee, so you’re not left on your own once the job is done.
- Place
- North Middleton (EH23)
- Wider area
- Midlothian
- Guarantee
- One year on every job
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
How we quote for new build mastic
Jobs vary more than people expect. The main factors:
- How many areas need sealing
- Which sealant suits the joint
- When we can work, for business premises
- The size of the job
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs. Ask us for a quote and we’ll go through it with you.
What we need to know
You do not need to know the technical terms. It helps if you can tell us:
- Any access issues, like height or stairs
- The address or postcode of the job
- Whether it has been sealed before
- Pictures of the joints, sent by email
For a quote, email us at info@mrmastic.co.uk with the location and a short description of the problem. You’ll have a clear quote before any work starts.
Why it’s worth doing now in North Middleton
DIY kits don’t solve the main problems with new-build sealant: dust, no primer and old sealant left in the joint. Proper removal and preparation are what make it last. Around North Middleton, water from a failed joint in an older stone home can soak into timber and plaster.
What you pay reflects the work, not a rough estimate. That’s why we ask a few questions first and send you a clear quote before work begins.
Why book with us
- Over 20 years’ experience
- Neat joints and a tidy finish
- We agree the colour with you first
- Domestic, commercial and hotel work
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
The process
On the day, there’s very little for you to do. Show us the job and we will take it from there. The work itself takes a few hours for most snagging lists, longer for a run of plots, including the tidy-up. Outside jobs in North Middleton need a dry day, because sealant will not bond to a wet joint, so external jobs may need to move if the day turns wet. Work indoors isn’t affected.
- First we work through your snagging list or plot schedule with you.
- We cut out every bit of the failed or messy sealant.
- Surfaces are cleaned of building dust and primed where needed.
- A sealant chosen for each area goes in and is tooled smooth.
- We check every joint and tell you how long each needs to cure.
Preparing for the visit
- Clear items away from the joints we’re working on
- Try not to wet indoor joints just before the visit
- Let us know about parking restrictions
Ask for a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. When it suits you, email us at info@mrmastic.co.uk.
Related advice
How to look after the new joints
So the new joints stay in good condition:
- Avoid running a DIY bead over the old one
- Keep water off fresh sealant until it has cured
- Watch for new gaps as the house dries out
- Avoid scourers and strong chemicals on sealant
Don’t stand on the bath edge or the lip of the tray. If a bath or tray moves when you stand in it, get it looked at.
Leave a failed new-build seal and water can reach the floor and the ceiling below. Catching it early keeps the fix to the sealant and the new finishes intact.
Nearby places to North Middleton
What else we do in North Middleton
Common questions in North Middleton
Is North Middleton in your area for new build mastic?
Yes. Our work covers the whole of Scotland, and North Middleton is part of that. Just send an email to info@mrmastic.co.uk with a few details of the job.
Do you work for landlords with property near Gorebridge station?
Yes. We work for landlords and agents as well as homeowners. You can send an email to info@mrmastic.co.uk with the details for a clear quote.
Is there any odour?
There can be a smell while the sealant cures. Opening a window helps.
Do you work through snagging lists?
Yes. Send it with photos and we will quote for the sealant items. Items that need a plumber, tiler or the builder are flagged.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Will it make a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
Do you work for hotels and businesses?
Yes, regularly. We can plan bigger jobs in stages.
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
We also work for property managers and facilities teams in North Middleton and across Midlothian. We can quote a run of properties together.
How the job changes by surface
Kitchens
New-kitchen sealant is often applied in a rush. We remove it and reseal with a kitchen-suitable sealant.
Bathrooms and en suites
Shower trays in new homes often move slightly in the first year. We reseal once the old bead is fully out.
New build mastic in North Middleton: local notes
Timber frame is common in newer Scottish homes, so skirting and sealant joints can open up as the building settles.
In and around North Middleton, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint. For new homes near Gorebridge station, it’s worth checking the sealant early, while snags are still fresh.
North Middleton is about 5 miles south-east of Bonnyrigg, in Midlothian. Every kind of property in North Middleton is covered for new build mastic, old or new, large or small. Every job comes with our one-year guarantee. North Middleton is one of 33 places in Midlothian where we work. For nearby work, see our Edinburgh page.
We cover every part of the EH23 postcode area for new build mastic. Whether your property is on Borthwick Castle Place, Cleuch Road and Borthwick Castle Terrace or a nearby road, we can help. We also cover the places around North Middleton: Arniston (1 mile north-west), Birkenside (1 mile north-west), Gorebridge (2 miles north-west), Carrington (3 miles west) and Gowkshill (3 miles north-west). Larger places within reach include Bonnyrigg (5 miles north-west), Dalkeith (5 miles north), Penicuik (8 miles west), Loanhead (7 miles north-west), Newtongrange (4 miles north-west) and Shawfair (8 miles north).
Landmarks near North Middleton
North Middleton’s nearest station is Gorebridge station, about 1.6 miles north-west of the centre. A little further out are Catcune Castle (1 mile north-west) and Midlothian Community Hospital (4.9 miles north-west). The countryside around North Middleton includes Edgelaw Reservoir.