Midlothian · Scotland
External Mastic in Newtongrange
Our applicators work in Newtongrange on sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Joints with sealant missing in places
- Sealant pulling away from one side of the joint
- Failed sealant between panels on a façade
External mastic for homes and businesses in Newtongrange
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. The colour is chosen to suit the brick or render so the line blends in. If you are dealing with moss and dirt in joints with no sealant left and joints pointed up with cement by mistake, we can help, on brickwork movement joints, joints between brick and frames and render & cladding joints alike.
Older stone buildings need a sealant that suits the stone, not an acetoxy product that can mark or attack it. Newer houses need their movement joints and roofline trims kept sound.
Our work is backed for twelve months, in Newtongrange and everywhere else we cover.
- Location
- Newtongrange (EH22, EH23)
- Wider area
- Midlothian
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
When it isn’t the sealant
New sealant cannot fix everything, and we’ll tell you before any work starts. It will not solve:
- Walls that need new movement joints cut into them
- Failed render or damaged cladding panels
- Cracks in the bricks or render themselves, away from the joints
Not sure which it is? You can drop us a line at info@mrmastic.co.uk and we will tell you honestly before you book.
Surfaces we seal
- Render & cladding joints
- Brickwork movement joints
- Concrete & block
- Façade panels
- Joints between brick and frames
- Copings & trims
Your questions about external mastic in Newtongrange
Will you come out to Newtongrange?
Yes, we do. Our work covers the whole of Scotland, and smaller places are part of that. Longer journeys are simply planned in advance.
Can you help a landlord with a rental near Newtongrange station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can send an email to info@mrmastic.co.uk with the details for a clear quote.
How long does external mastic take?
Typically it takes a few hours for a handful of joints, longer for a whole elevation. Larger jobs naturally take longer, and we’ll say how long yours will take.
What’s an expansion joint in brickwork?
A vertical gap in a long brick wall is usually a movement joint. It lets the bricks expand without cracking and needs a flexible seal, not mortar.
Will there be a smell?
That depends on the sealant. Some products have a noticeable smell, others very little.
How often do external joints need resealing?
It varies from wall to wall: joints on exposed walls or with a lot of movement age sooner. Check them each year and reseal when they split or harden. Our work comes with a one-year guarantee.
What do you need from me for a quote?
Let us know what needs doing and where, with pictures by email if possible. We will ask anything else we need to know.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We’ll give you the cure time for the product we used.
How we quote for external mastic
The quote reflects the job in front of us. We take into account:
- Whether old sealant or filler has to be cut out
- Which sealant suits the joint
- Mould in or behind the old joints
- The size of the job
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all play a part.
What to tell us for a quote
Photos by email are helpful but not essential. Try to tell us:
- Roughly how big the job is
- If it’s domestic, commercial or a hotel
- Whether it has been sealed before
- A few pictures by email, if you can
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
Walls and rooflines in Newtongrange
With historic houses such as Melville Castle (about 2.3 miles north-west) nearby, there’s older building stock in the area around Newtongrange as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth. Harled (roughcast) walls are common in Scotland, and where harling meets frames, pipes and other materials, the joint needs a flexible sealant that grips a rough surface.
Rented homes near Newtongrange station change hands often, and split movement joints are easy to miss on a rental until damp shows inside. If you live in an older home near Newtongrange Parish Church, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Newtongrange is about 2 miles south of Dalkeith, in Midlothian. Homes, rented property, offices and hotels in Newtongrange can book us for external mastic, old or new, large or small. The work is guaranteed for a year. Across Midlothian, we cover 33 places, Newtongrange among them. There’s also a page for Edinburgh, about 8 miles away.
Jobs for external mastic in EH22 and EH23 works the same way as everywhere else we cover. If you need external mastic at a property on Main Street, The Square and Station Road or anywhere close by, we can help. Newtongrange sits on or near the B6482, which makes travel easy. If you are just outside Newtongrange, we cover Gowkshill (1 mile south), Easthouses (1 mile north-east), Mayfield (1 mile east), Newbattle (1 mile north-west) and D'Arcy (1 mile east). We also work in nearby towns such as Penicuik (7 miles west), Loanhead (4 miles west), Shawfair (4 miles north), Danderhall (4 miles north-west), Rosewell (3 miles west) and Roslin (4 miles west). Newtongrange is among the bigger towns we cover in Midlothian.
What’s near Newtongrange
We work in homes and buildings around The Dean Tavern and Public Library, among other places. There’s a railway station in Newtongrange itself: Newtongrange station. Other landmarks nearby include Dalhousie Castle (0.9 miles south-west) and Midlothian Community Hospital (1.3 miles north-west). Open spaces near Newtongrange include Edgelaw Reservoir.
Landlord and commercial work in Newtongrange
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we will give you a quote.
Hotels need rooms back in use, so we plan the work room by room. We have worked in hotels as well as homes and businesses.
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
When to call us in Newtongrange
Using the wrong sealant is another common reason. A stiff, general-purpose sealant can’t cope with a joint that moves a lot, so it pulls away from the edges.
People generally contact us when they notice something like this:
- Damp patches traced to an open external joint
- Failed seals between different materials
- Hard, crazed mastic that has stopped moving
- Panel joints letting water in
For site and facilities teams at buildings such as Newbattle Community High School, larger buildings have long runs of movement joint that eventually need resealing.
Questions to ask before you book
- Who turns up on the day
- How hidden problems are handled
- How the colour is chosen
- How long to leave it before use
Leave it or put it right?
Done well, a resealed joint is a neat, straight line that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner, so it pays to do it properly once. Around Newtongrange, water from a failed joint in an older stone home can soak into timber and plaster.
A failed joint rarely gets cheaper to fix by waiting. If you are unsure, drop us a line at info@mrmastic.co.uk for an honest opinion and a quote.
Why Newtongrange clients choose us
- Sanitary silicone with an anti-fungal additive in wet areas
- Experience in homes, commercial sites and hotels
- Sealant colour chosen to suit
- ARBOMaster approved applicator
Take a look at our cost guide and what customers say.
How it works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours for a handful of joints, longer for a whole elevation and we leave things clean and tidy. For a place like Newtongrange, longer drives are planned in advance. Mention tracks, gates, ferries or anything else about the route.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Preparing for the visit
- Mention any tricky access
- Mention if the joints have been sealed before
- Clear items away from the joints we are working on
How to get a quote
To get 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 we start.