East Lothian · Scotland
Longniddry New Build Mastic
Our applicators work in Longniddry on plot mastic for developers and snagging failed sealant in new homes. Old material cut out, joints cleaned and sealed neatly.
- New-build shower sealant that has already split
- Skirting joints opening in the first winter
- Cracked sealant around new window and door frames
New build mastic for homes and businesses in Longniddry
Dust is the enemy of new-build sealant. We clean every joint thoroughly and prime where the surface and product need it, so the sealant actually sticks instead of bonding to the dust. Common call-outs are for leaking shower tray seals in a new home and gaps between new skirting and floors, across bathrooms & en suites, kitchens and windows & doors.
Many newer homes in Scotland are timber-framed and settle as they dry out, so skirting and floor joints can open up. In older homes, timber floors move through the year too.
Our work is backed for twelve months.
- Location
- Longniddry (EH32)
- Region
- East Lothian
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
When it isn’t the sealant
Sealant isn’t the answer to every problem, and we’d rather say so up front. It will not solve:
- Broken tiles or a split tray
- Movement caused by a poorly fitted tray or bath
- Cracking that points to a structural problem
Not sure which it is? You can drop us a line at info@mrmastic.co.uk and we’ll tell you honestly before you book.
What we seal
- Windows & doors
- Bathrooms & en suites
- Skirting & floors
- Plot handovers
- Kitchens
- Show homes
What happens on the day
There is not much for you to do on the day. Point us to the joints and we will get on with it. The job generally takes a few hours in a single home from start to finish. Somewhere like Longniddry may be a longer drive, and the journey is planned ahead. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- We go through the snagging list or plot schedule and agree the joints to do.
- We cut out every bit of the failed or messy sealant.
- Surfaces are cleaned of building dust and primed where needed.
- We apply a sealant that suits each joint and tool it to a neat finish.
- We check every joint and tell you how long each needs to cure.
How to prepare
- Mention any leaks or damp you’ve noticed
- Try not to wet indoor joints just before the visit
- Tell us about access, such as stairs, a lift or high-level joints
Get a quote
Asking for a quote is easy: let us know the job and the location and its rough size. A few photos by email make the job easier to understand.
Read more
DIY versus a professional finish
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
Quotes for new build mastic in Longniddry
The price is agreed before any work begins. It’s based on:
- When we can work, for business premises
- Access and height
- The product the joint needs
- The old material and how stubborn it is
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. You will know the price before we begin.
Asking for a quote
Before you ask for a quote, have a think about:
- A few pictures by email, if you can
- What the problem is, such as mould, gaps, leaks or cracking
- How we’d reach the joints
- Whether it’s a home or a business
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. Whenever you are ready, email us at info@mrmastic.co.uk.
Why deal with it now?
Small cosmetic gaps can wait for the house to settle, but water getting through can’t. If you’re unsure which you have, send an email to info@mrmastic.co.uk with photos. In a place like Longniddry, small leaks are easy to put off, but water behind a failed seal does the most damage when nobody’s watching.
We don’t show prices on the website, because each job is priced on what it involves. For a quick quote, please drop us a line at info@mrmastic.co.uk.
What you get with us
- You choose the colour before work begins
- Every job guaranteed for a year
- Approved under the ARBOMaster scheme
- Quality sealants from Arbo and Everbuild
Take a look at our cost guide and customer reviews.
Towns and villages near Longniddry
Also in Longniddry
What we are called out for in Longniddry
The wrong product is sometimes used in the wrong place: caulk where water collects, or a rigid product on a moving joint. Neither lasts long.
These are the problems we are asked about most:
- Internal frame sealant that has split
- Skirting joints opening in the first winter
- Plot mastic for developers ahead of handover
- Smeared, uneven beads picked up at snagging
Around Longniddry, as everywhere, new build mastic is only as good as the preparation behind it.
Comparing quotes
- Who does the work, and how experienced they are
- How hidden problems are handled
- Whether all the old sealant comes out first
- How the joint is cleaned and prepared
Questions from Longniddry
Do you work for landlords with property near Longniddry station?
Yes. We work for landlords and letting agents as well as householders. You can send an email to info@mrmastic.co.uk with the details for a clear quote.
Do you cover Longniddry for new build mastic?
Yes. Our work covers the whole of Scotland, and Longniddry is part of that. You can drop us a line at info@mrmastic.co.uk and let us know what needs doing, and we’ll give you a clear price.
What should I tell you?
Just the basics: the address or postcode, what’s wrong and any access issues. After that, simply send an email to info@mrmastic.co.uk.
Should I try DIY first?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. If it does not work out, we can redo it.
Should I go to my builder first?
Report it to the builder first while you are covered. If it is not resolved, we’ll cut it out and reseal it.
Do you work through snagging lists?
Yes. We often work straight from a snagging list. We will go through the sealant items and agree what we will do.
Will there be a smell?
There can be a smell while the sealant cures. Ventilation helps.
How long does new build mastic take?
Typically it takes a few hours in a single home. Larger jobs naturally take longer.
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. Our tips:
- Check bath and shower seals every few months as the house settles
- Avoid running a DIY bead over the old one
- Photograph failed sealant before it’s redone
- Get a leaking seal dealt with right away
Photograph failed sealant before it’s redone and keep the builder’s replies. It helps if anything else comes up during the warranty period.
If a shower tray or bath seal splits in the first year, look for movement. Have it resealed, and the tray or bath checked, before it gets worse.
New build mastic in Longniddry: local notes
Longniddry is within about 1 mile of the coast. Plot mastic on new homes near the coast takes more weather than it would inland, so it’s worth checking at snagging. Timber frame is common in newer Scottish homes, and as the frame dries and settles, skirting and sealant joints can open up.
If you’ve bought a new home near Longniddry station, the sealant around baths, showers and frames is worth checking in the first year or two.
Longniddry is about 4 miles west of Haddington, in East Lothian. Whether you’re in the middle of Longniddry or further out, new build mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Longniddry is one of 48 towns and villages in East Lothian where we work for new build mastic. Our Edinburgh page covers work nearby (12 miles or so).
We cover every part of the EH32 postcode area for new build mastic and the streets around it. Local streets include Main Street, Station Road and Lorne Way, all of which we cover. Nearby, we also carry out new build mastic in Gladsmuir (2 miles south-east), Macmerry (2 miles south), Cockenzie and Port Seton (2 miles west), Seton (2 miles south-west) and Aberlady (3 miles north-east). Further out, we also cover Musselburgh (7 miles west), Haddington (4 miles east), Dunbar (15 miles east), North Berwick (9 miles north-east), Prestonpans (4 miles west) and Wallyford (5 miles south-west). As one of the bigger places in East Lothian, Longniddry has homes, rented property and businesses of every kind.
Local landmarks in Longniddry
We work in homes and buildings around Gosford Park. Longniddry has its own railway station: Longniddry station. Other landmarks nearby include Roodlands General Hospital (3.9 miles east) and Seton Palace (1.6 miles west). Not far away are Skid Hill and Marl Loch.