Midlothian · Scotland
Roslin External Mastic
External mastic for Roslin and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Leaking joints around cladding and façade panels
- Weeds or debris growing in open joints
- Sealant that has lost its bond to the brick or render
Leave it or put it right?
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That protects surfaces like brick, render and concrete. A stiffer product can damage the joint edge as it fails. Out of town in Scotland, exposed walls take a lot of weather, and once water gets behind a failed joint, damp in stone or harled walls is slow to dry out.
Doing several joints on one visit is generally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
Why us?
- 4.9 on Google from 180+ five-star reviews
- We leave the area clean and tidy
- White, clear, grey or coloured to suit, where the product allows
- Homes, businesses and hotels
Take a look at what affects the cost or our reviews.
External mastic for homes and businesses in Roslin
A movement joint is only as good as its depth. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, so it bonds to the two sides only and can stretch. We work on render & cladding joints, façade panels and brickwork movement joints, and people most often call us about movement joints with cracked, split or missing sealant and sealant that has lost its bond to the brick or render.
Stone walls need a stone-friendly sealant, as acetoxy products can attack some stone. On newer homes, the movement joints and roofline trims are what need watching.
A one-year guarantee comes as standard, so you’re not left on your own once the job is done.
- Location
- Roslin (EH25)
- Region
- Midlothian
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What sealant work cannot fix
We won’t take on work that will not last, so here’s what sealant cannot put right:
- Loose or hollow render, which needs re-rendering
- Structural movement, which needs a surveyor or engineer
- Cracking across the wall rather than at a joint
If in doubt, send an email to info@mrmastic.co.uk and we’ll say what we think.
Surfaces we seal
- Joints between brick and frames
- Render & cladding joints
- Brickwork movement joints
- Copings & trims
- Façade panels
- Concrete & block
Quotes for external mastic in Roslin
Your quote is based on your job. We look at:
- The size of the job
- The product the joint needs
- Mould in or behind the old joints
- Access and height
The cost depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before work begins.
What to tell us for a quote
To make quoting easier, please include:
- Any previous sealing or DIY work
- How many joints, rooms or windows are involved
- Pictures of the joints, sent by email
- The problem you’ve noticed
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.
Different surfaces, different methods
Render joints
Render is weaker at the surface than brick, so a low-modulus sealant is kinder to the joint edges. Priming is done where the sealant calls for it.
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. We reseal them with a low-modulus sealant over backing rod in a colour to suit the brick.
Places near Roslin
What else we do in Roslin
Outside joints around Roslin
Historic houses like Melville Castle (about 3.4 miles north-east) are a reminder that the area around Roslin has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth. Plenty of Scottish homes have harled walls, and where harling meets frames, pipes and other materials, the joint needs a flexible sealant that grips a rough surface.
For landlords with property near Eskbank station, outside joints that have cracked can let damp into a rental, so check them between lets. If you look after a building such as Lasswade High School Centre, its movement joints, gutters and trims need looking after like any other building’s.
Roslin is about 3 miles north-east of Penicuik, in Midlothian. Homes, rented property, offices and hotels in Roslin can book us for external mastic. The work is guaranteed for a year. Roslin is one of 33 places in Midlothian we cover for external mastic. Our Edinburgh page covers work nearby (6 miles or so).
Jobs for external mastic in EH25 works the same way as everywhere else we cover. Streets in the area include Main Street, Station Road and Widnell Square, and we cover them all. Being close to the B7003, Roslin is simple for us to get to. If you are just outside Roslin, we cover Bilston (1 mile north-west), Rosewell (1 mile east), Auchendinny (1 mile south-west), Loanhead (1 mile north) and Polton (2 miles east). We also work in nearby towns such as Bonnyrigg (3 miles east), Dalkeith (5 miles north-east), Penicuik (3 miles south-west), Gorebridge (5 miles east), Newtongrange (4 miles east) and Mayfield (5 miles east).
Near you in Roslin
The nearest railway station is Eskbank station, roughly 3.7 miles north-east. Nearby you’ll also find Princess Margaret Rose Orthopaedic Hospital (3 miles north) and Glencorse Museum (1.6 miles south-west). Open spaces near Roslin include Edgelaw Reservoir and The New Leaf Co-op.
Landlord and commercial work in Roslin
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
If you manage several properties in or around Roslin, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
Roslin questions
Can you do external mastic in Roslin?
Yes. We work across all of Scotland, and Roslin is part of that. Just email us at info@mrmastic.co.uk with a few details of the job.
Do you cover smaller places like Roslin?
Yes, smaller places are covered as well as towns. We work across all of Scotland. Just mention lanes, gates or anything else about the route when you book.
Should I point up the gap in my brickwork?
No. Cement or mortar cannot stretch, so the joint stops doing its job. If it has already been filled, we can usually cut it out and reseal it.
Will there be a smell?
Sometimes, a little. Any smell clears as the sealant cures.
Are you ARBOMaster approved?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
I’m a tenant. Can you help?
We can work for tenants, landlords or agents. Just make sure your landlord agrees.
Is it OK to seal over old sealant?
No. Fresh sealant doesn’t stick to old sealant, and it traps any mould or water underneath. We remove it all first.
What we are called out for in Roslin
Joints sealed without backing rod, or far too deep, rarely last. If the sealant sticks to the back as well as the sides, it can’t stretch and rips as the joint opens.
The problems people normally mention when they call include:
- Plants rooting in failed movement joints
- Rain getting behind render or cladding at a joint
- Gaps where render, brick and frames meet
- Failed sealant between panels on a façade
Melville Castle, about 3.4 miles north-east, is one of the historic houses in the wider area around Roslin, and older homes nearby need a sealant that suits their walls.
Questions to ask before you book
- Whether the sealant suits the joint
- How the surfaces are prepared before sealing
- The length of the guarantee
- Who turns up on the day
How it works
Once we’re on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. After that, the work takes anything from a few hours to several days, depending on the building. Outside jobs in Roslin 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.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Before we arrive
- Mention any leaks or damp you’ve noticed
- Let us know about parking restrictions
- Clear the area around the work
Get a quote
Every job is quoted individually, so the first step is telling us about yours. Just drop us a line at info@mrmastic.co.uk with the details, and pictures are welcome.