Midlothian · Scotland
New Build Mastic in Dewartown
Plot mastic for developers and snagging failed sealant in new homes in Dewartown, with a one-year guarantee on every job. Ask us for a quote.
- Beads laid onto grit and dust from the build
- Messy sealant that spoils new finishes
- Gaps between new skirting and floors
Dewartown questions
Do you cover Dewartown for new build mastic?
Yes. Our work covers the whole of Scotland, and Dewartown is part of that. You can drop us a line at info@mrmastic.co.uk and tell us what needs doing, and we’ll give you a clear price.
Will you come out to Dewartown?
Yes, Dewartown is covered. Our work covers the whole of Scotland, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us and we are fully insured.
Do you work for developers?
Yes. We work through plots to your schedule. Get in touch with the number of plots and the scope for a clear quote.
Can you do several jobs on one visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
Where are you based?
We are a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
How long before the joint can be used?
Most sealants are touch-dry well before they’re fully cured. We’ll give you the cure time for the product we used before we leave.
Can landlords and businesses book you?
Yes, regularly. Several properties can go on one quote, and between tenancies is a good time for the work.
New build mastic in Dewartown
For builders and developers, we work through plots to the schedule you give us. Bathrooms, en suites, kitchens, frames and skirting are sealed ready for handover using the right product for each joint. We’re often asked to deal with cracked caulk along new skirting and shower seals failing in the first year or two, on show homes, kitchens and skirting & floors.
Work in a place like Dewartown is planned ahead, journey included. Inside work goes ahead in any weather; outside mastic needs a dry day.
Whatever the size of the job, it’s backed by our one-year guarantee in Dewartown and across Midlothian.
- Where
- Dewartown (EH23)
- Wider area
- Midlothian
- Cover
- One year on every job
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
For landlords and businesses
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
We work for landlords and agents as well as homeowners. Resealing between tenancies keeps a property looking cared for before the next move-in.
More services for Dewartown
How to look after the new joints
Good habits help new joints last longer. A few tips:
- Check bath and shower seals every few months as the house settles
- Get a leaking seal dealt with straight away
- Wipe joints with warm soapy water
- Report sealant problems to your builder during the snagging period
Ventilation matters in a new home, which is still drying out. Use the extractor fan or open a window after showers so moisture doesn’t sit on the sealant.
Don’t let the snagging period run out with sealant problems unreported. Once it ends, the repair may be down to you so report it promptly.
New build mastic in Dewartown: local notes
Many new homes in Scotland are timber-framed, and as the frame dries and settles, skirting and sealant joints can open up.
If you’ve bought a new home near Gorebridge station, the sealant around baths, showers and frames is worth checking in the first year or two.
Dewartown is about 3 miles south-east of Dalkeith, in Midlothian. If you need new build mastic in Dewartown, it’s easy to get a quote: please send an email to info@mrmastic.co.uk. We cover Midlothian from our Crawley base, Dewartown included. Across Midlothian, we cover 33 places, Dewartown among them. You can also see our page for Edinburgh, about 10 miles away.
We work across the EH23 postcode area for new build mastic. Close by, we work in Edgehead (1 mile north-west), Pathhead (1 mile east), D'Arcy (1 mile west), Mayfield (2 miles west) and Easthouses (2 miles north-west). We also work in nearby towns such as Bonnyrigg (4 miles west), Dalkeith (3 miles north-west), Penicuik (9 miles west), Loanhead (6 miles west), Gorebridge (3 miles south-west) and Newtongrange (3 miles west).
Near you in Dewartown
The closest station to Dewartown is Gorebridge station, roughly 2.7 miles south-west. Other landmarks nearby include Midlothian Community Hospital (3.8 miles west) and Oxenfoord Castle (1.1 miles north-east).
What we do, step by step
A visit follows a simple pattern: we look at the joints together, protect the area around them, carry out the job and tidy away. Most jobs take 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. Let us know how to find you and how to reach the joints, and the visit is planned around that.
- We look at why each joint failed, including any movement.
- 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
- Let us know about parking restrictions
- Mention any tricky access
- Plan for the work area to be out of bounds to pets and children
Ask for a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that is easy.
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Can I do it myself?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
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, and the work is guaranteed for a year.
Signs you need new build mastic in Dewartown
If plaster or screed was still damp when it was sealed, the bond suffers. Site programmes don’t always leave time for joints to dry.
Look out for these signs:
- Second-fix sealing on new plots
- Shower seals failing in the first year or two
- Sealant applied over dusty or wet surfaces
- Gaps between new skirting and floors
Around Dewartown, as everywhere, new build mastic is only as good as the preparation behind it.
Questions to ask before you book
- Whether they’re fully insured
- Who does the work, and how experienced they are
- How the joint is cleaned and prepared
- How hidden problems are handled
What we can’t put right
To be straight with you, some problems need a different trade:
- Baths and trays that move too much for sealant to cope with
- Broken tiles or a split tray
- Plumbing faults behind the sealant
If you are not sure, just email us at info@mrmastic.co.uk and we’ll give you a straight answer.
Surfaces we seal
- Kitchens
- Bathrooms & en suites
- Windows & doors
- Show homes
- Plot handovers
- Skirting & floors
What affects the cost of new build mastic
There’s no set price list, because no two jobs are the same. The quote depends on:
- Any mould that needs treating
- Whether old sealant or filler has to be cut out
- Which sealant suits the joint
- The number of rooms or windows
What it costs depends on how much there is to do, how much old material has to come out 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:
- How many joints, rooms or windows are involved
- The problem you’ve noticed
- Pictures of the joints, sent by email
- Whether it has been sealed before
Getting a quote is simple: let us know the job and the location. A few photos by email make the job easier to understand, and we will take it from there.