Midlothian · Scotland
External & façade joints in Rosewell, Midlothian
Sealing brickwork movement joints, render, cladding and façade joints in Rosewell, with a 12-month guarantee on every job. Ask us for a quote.
- Rain getting behind render or cladding at a joint
- Sealant that has lost its bond to the brick or render
- Moss and dirt in joints with no sealant left
External mastic in Rosewell
A movement joint is a deliberate break that lets a wall expand and contract. Its sealant has to flex with the building, season after season, so once it splits or hardens, the joint stops working and water gets in. We’re often asked to deal with damp patches traced to an open external joint and weathered mastic that no longer stretches, on render & cladding joints, façade panels and concrete & block.
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.
You get a 12-month guarantee, the same in Rosewell as everywhere else we work.
- Location
- Rosewell (EH24)
- Wider area
- Midlothian
- Guarantee
- A year, on every job
- Price
- A clear price before work begins
- info@mrmastic.co.uk
- Updated
- 26 October 2026
How the job changes by surface
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. We size the backing rod to the gap and keep the sealant to the right depth.
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. The old joint is removed and a sealant that bonds to both sides goes in.
More services for Rosewell
DIY sealant or a professional job?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
Honest limits
It helps to know what we cannot do:
- Cracking across the wall rather than at a joint
- Damp that is not coming from the joint
- Render that is blown, hollow or coming away
If you are not sure, just drop us a line at info@mrmastic.co.uk and we will give you a straight answer before booking.
Surfaces we seal
- Joints between brick and frames
- Render & cladding joints
- Copings & trims
- Brickwork movement joints
- Concrete & block
- Façade panels
What external mastic looks like in Rosewell
Historic houses like Melville Castle (about 3 miles north-east) are a reminder that the area around Rosewell 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. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that.
If you let a flat or house near Newtongrange station, outside joints that have cracked can let damp into a rental, so check them between lets. If you live in an older home near Rosewell Parish Church, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Rosewell is about 2 miles south-west of Bonnyrigg, in Midlothian. Homes, rented property, offices and hotels in Rosewell can book us for external mastic. The work is guaranteed for a year. 33 places in Midlothian are on our list, from the larger towns to small villages. We also work in Edinburgh, about 7 miles from Rosewell.
All of EH24 is covered for external mastic, from the main roads to the quietest streets. If you need external mastic at a property on Louisa Square, Shiel Hall Square and Gorton Loan or a nearby road, our applicators can take on the job. Nearby, we also carry out external mastic in Polton (1 mile north), Roslin (1 mile west), Bonnyrigg (2 miles north-east), Loanhead (2 miles north) and Bilston (2 miles north-west). Within a short drive, we also cover Dalkeith (4 miles north-east), Penicuik (3 miles west), Gorebridge (4 miles east), Newtongrange (3 miles east), Mayfield (4 miles east) and Shawfair (5 miles north). Rosewell is one of the larger places we cover in Midlothian.
Around Rosewell
The nearest railway station is Newtongrange station, about 2.9 miles east. Well-known places in the area include Hawthornden Castle (0.7 miles north) and Midlothian Community Hospital (2.7 miles north-east). Not far away are Woodhouselee Hill and Edgelaw Reservoir.
Rosewell questions
Do you cover Rosewell for external mastic?
Yes. Our work covers the whole of Scotland, and Rosewell 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 Rosewell?
Yes, smaller places are covered as well as towns. Our work covers the whole of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
Do you work for letting agents?
Yes, often. We can quote for several properties at once, and between tenancies is a good time for the work.
What do you need from me for a quote?
The location, the problem and the rough size of the job. If you can, email a few photos.
Can new sealant go over the old?
No. New silicone won’t bond to old silicone, and it traps any mould or water underneath. It all has to come out first.
Where do you work from?
Our base is in Crawley, and we work across South East England, London and Scotland.
What is a movement joint?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It should be filled with flexible sealant, never mortar.
Can you reach joints on upper floors?
It depends on the height and the site. Ground-floor joints are simple; for higher work, tell us about the building and we will confirm what’s needed.
Aftercare tips
After the cure time, these simple habits help:
- Show decorators and builders where the movement joints are
- Keep movement joints as flexible joints, not mortar
- Have failed joints looked at early
- Look over the joints every year, ideally after winter
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges and let water in behind.
A joint that has stopped moving pushes the movement elsewhere, generally as cracking in the brickwork or render nearby. Resealing it early helps prevent that.
What happens on the day
Good joint work is mostly preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it generally takes a few hours to a few days, depending on the length of joint and the access. Outside jobs in Rosewell need a dry day, because sealant will not bond to a wet joint, so an outdoor job can move if the forecast changes. Work indoors isn’t affected.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
Getting ready for the visit
- Move anything stored near the joints
- Mention any tricky access
- Plan for the work area to be out of bounds to pets and children
How to get a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we will talk you through the work before giving you a price.
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What affects the quote in Rosewell
The quote reflects the job in front of us. We look at:
- Working hours on commercial sites
- The type of sealant required
- The size of the job
- Mould in or behind the old joints
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs, along with when we can work on site. Call for a quick quote and we will go through it with you.
Helping us quote
Before you ask for a quote, have a think about:
- How many joints, rooms or windows are involved
- What’s wrong with the joints now
- Where the job is, and your postcode
- How we’d reach the joints
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.
What we are called out for in Rosewell
Weeds, moss and debris in a joint are a sign the sealant has gone. Dirt and roots then trap moisture in the joint and speed up the damage.
Common reasons people contact us are:
- Hard, crazed mastic that has stopped moving
- Joints pointed up with cement by mistake
- Panel joints letting water in
- Sealant that has lost its bond to the brick or render
For site and facilities teams at buildings such as Lasswade High School Centre, larger buildings have long runs of movement joint that eventually need resealing.
Questions to ask before booking
- The length of the guarantee
- What preparation is included
- When the joint can take water or movement
- Is VAT in the price?