Glasgow · Scotland
External Mastic in Dowanhill
We cover Dowanhill for sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Plants rooting in failed movement joints
- Water getting into walls through failed joints
- Movement joints filled with mortar instead of sealant
External mastic for homes and businesses in Dowanhill
Many failed façade joints only get noticed once there’s a stain or a damp patch inside. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a colour to suit. Common call-outs are for moss and dirt in joints with no sealant left and damp patches traced to an open external joint, across concrete & block, joints between brick and frames and brickwork movement joints.
Alongside their tenements, Scotland’s cities have modern blocks with render, cladding and movement joints. In Dowanhill, those joints dry out over time and let water in behind the render or cladding.
There’s a 12-month guarantee on every job.
- Place
- Dowanhill (G12, G11, G20)
- Region
- Glasgow
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
How the visit works
The work is kept neat and contained to the area we are working on, so you can get on with your day. The job generally takes anything from a few hours to several days, depending on the building, and we explain the cure time before we leave. Parking in city streets around Dowanhill can be tight or controlled, so it helps to know about permits or nearby bays. For flats, mention the door entry system and any shared-stair arrangements.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Before we arrive
- Tell us if parking is tricky
- For business premises, tell us about site rules or sign-in
- For indoor joints, keep the area dry beforehand if you can
Ask for a quote
Asking for a quote is easy: let us know what needs doing and where. Photos by email help us understand the job, and we’ll take it from there.
Read more
Aftercare tips
A little care helps the new joints last. We recommend:
- Make sure movement joints are not pointed over
- Act on the first splits you see
- Keep high-pressure jets off the joints
- Point out the joints to other trades
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
Act while the splits are small. At that stage it’s a simple cut out and reseal.
Dowanhill: your questions answered
Is Dowanhill in your area for external mastic?
Yes. We work across all of Scotland, and Dowanhill is part of that. You can drop us a line at info@mrmastic.co.uk and tell us what needs doing, and we will give you a clear price.
Do you work for landlords with property near Hyndland station?
Yes, rental work is part of what we do. You can send an email to info@mrmastic.co.uk with the address and a few details, and we’ll give you a fixed price before we start.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises. We can talk about working times when we quote.
Can you seal joints between render and window frames?
Yes. Where different materials meet is one of the most common joints we seal. The sealant is chosen to bond to both sides.
Will the old sealant be removed?
Yes, always, and completely. New silicone does not stick to old silicone, so the joint is cleaned back first.
Can new sealant go over the old?
No, because it fails. The old sealant always comes out first, so the new sealant bonds properly.
Where is Mr Mastic based?
Our base is in Crawley, and we work across South East England, London and Scotland.
What does external mastic cost?
Size, access and the old material all affect the cost. Call for a quick quote and we’ll talk you through it.
How the job changes by surface
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.
Copings and trims
Coping and trim joints face rain and sun head on. Each is resealed with a weatherproof, flexible sealant.
What we cannot put right
Some problems need a builder, plumber or other trade rather than us:
- Walls that need new movement joints cut into them
- Movement that is more than a sealant joint can take
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
Not sure which it is? You can drop us a line at info@mrmastic.co.uk and we will tell you honestly.
Surfaces we seal
- Façade panels
- Joints between brick and frames
- Copings & trims
- Render & cladding joints
- Concrete & block
- Brickwork movement joints
What affects the quote in Dowanhill
The price is agreed before any work begins. It takes into account:
- How easy the joints are to reach
- How much there is to do
- How much old sealant there is and how hard it is to remove
- When we can work, for business premises
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.
What we need to know
What to tell us when you ask for a quote:
- Whether it’s a home or a business
- What’s wrong with the joints now
- The rough size of the job
- Any previous sealing or DIY work
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we’ll talk you through the work before giving you a price.
For landlords and businesses
For anyone letting property in or around Dowanhill, several properties can be quoted together. Send us the addresses and the work at each, and photos by email help.
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
Towns and villages near Dowanhill
What else we do in Dowanhill
Dowanhill buildings and the weather
Plenty of Scottish homes have harled walls, and joints where harling meets other materials need a sealant that can grip and flex. With historic houses such as Tenement House (about 1.4 miles south-east) nearby, there’s older building stock in the area around Dowanhill as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
For site and facilities teams at buildings such as Notre Dame High School, larger buildings have long runs of movement joint that eventually need resealing. If you let a flat or house near Hyndland station, outside joints that have cracked can let damp into a rental, so check them between lets. Tenement House, about 1.4 miles south-east, is one of the historic houses in the wider area around Dowanhill.
Dowanhill is about 2 miles north-west of Glasgow, in Glasgow. Every kind of property in Dowanhill is covered for external mastic, old or new, large or small. Every job comes with our 12-month guarantee. Dowanhill is one of 183 towns and villages in Glasgow we cover.
Every address in G12, G11 and G20 is within our area for external mastic. External mastic is available to properties on Kew Lane, Dyce Lane and Ford Road and the roads around them. We also cover Partickhill (1 mile south-west), Hyndland (1 mile west), Kelvinside (1 mile north), Partick (1 mile south-west) and Thornwood (1 mile south-west). We also work in nearby towns such as Calton (3 miles south-east), Langside (4 miles south), Yoker (3 miles west), Mount Florida (4 miles south-east), Hillpark (4 miles south) and Shawlands (3 miles south). As one of the bigger places in Glasgow, Dowanhill has homes, rented property and businesses of every kind.
Landmarks near Dowanhill
Typical jobs here are in homes near Church Street Primary School, Glasgow University Library and Curlers Rest pub. You will also find St Peter's Boys School (under half a mile south) and Kelvingrove Park (0.8 miles south-east). The closest station to Dowanhill is Hyndland station, about 0.5 miles west. A little further out are Western Infirmary (0.5 miles south-east) and Partick Castle (0.6 miles south). Not far away are Castle Hill and Kilmardinny.
Leave it or put it right?
A properly done movement joint is an even line in a colour that suits the wall. A rushed bead with no backing looks untidy and doesn’t last. In a tenement flat in Dowanhill, a failed seal is rarely just your problem: water can reach the flat below, and gaps in shared walls or fire-stopping affect the whole stair.
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please send an email to info@mrmastic.co.uk.
What you get with us
- Any old sealant cut out fully, not covered over
- Rated 4.9 stars on Google
- Anti-fungal sanitary silicone in wet areas
- A choice of colours where the product allows