Glasgow · Scotland
Govanhill External Mastic
Sealing brickwork movement joints, render, cladding and façade joints in Govanhill, with a one-year guarantee on every job. Ask us for a quote.
- Movement joints filled with mortar instead of sealant
- Panel joints letting water in
- Moss and dirt in joints with no sealant left
About our external mastic in Govanhill
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. If you have plants rooting in failed movement joints and water getting into walls through failed joints, we can help, on concrete & block, façade panels and copings & trims alike.
Stone-built tenements in Scotland’s cities share their roof, gutters and outside walls between every flat in the building. In Govanhill, work on shared parts of a tenement is normally agreed between owners, often with a factor arranging it.
All of our work is guaranteed for twelve months.
- Place
- Govanhill (G42, G41, G5)
- Region
- Glasgow
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
Nearby places to Govanhill
What else we do in Govanhill
Govanhill questions
Do you work for landlords with property near Queens Park (Glasgow) station?
Yes, we work for landlords and agents. You can drop us a line at info@mrmastic.co.uk with the address and a few details, and we’ll give you a fixed price before work begins.
Who arranges sealant work on the shared parts of a tenement in Govanhill?
It usually goes through the owners together, or through the factor if the building has one. The Tenements (Scotland) Act 2004 covers the common parts where the deeds do not.
Where is Mr Mastic based?
We’re based in Crawley, West Sussex, and we work across South East England, London and Scotland.
Does someone need to be in?
For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you do not need to watch us work.
Is it OK to seal over old sealant?
No, because it fails. The old sealant always comes out first, so the new joint bonds to clean surfaces.
How long will you be here?
As a guide, most jobs take anything from a few hours to several days, depending on the building. Bigger jobs take longer, and we will tell you how long to expect.
What does external mastic cost?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Can you reach joints on upper floors?
It depends on the height and the site. Low-level joints are straightforward; for higher work, tell us about the building and we’ll confirm what’s needed.
How we quote for external mastic
Every job gets its own quote. This is what makes a difference:
- How easy the joints are to reach
- Whether there’s mould to deal with
- Whether old sealant or filler has to be cut out
- How many areas need sealing
Leaving a failed joint usually makes the job bigger, not smaller. If you’re unsure, drop us a line at info@mrmastic.co.uk and we’ll give you an honest view and a quote.
What to tell us for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Whether it has been sealed before
- The type of property
- Access, such as stairs, a lift or height
- How many joints, rooms or windows are involved
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and add photos by email if you can.
When to call us in Govanhill
Some movement joints have been pointed up with mortar by mistake. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
Keep an eye out for any of the following:
- Weathered mastic that no longer stretches
- Movement joints with cracked, split or missing sealant
- Water getting into walls through failed joints
- Movement joints filled with mortar instead of sealant
Schools such as Holyrood Secondary School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
Questions to ask before you book
- Whether they seal over old material or remove it
- Whether they’re fully insured
- How the colour is chosen
- When the joint can take water or movement
Leave it or put it right?
The longer a joint stays open, the more water the wall takes in. Wet masonry is more easily damaged by frost, so the problem grows beyond the joint itself. Private landlords in Govanhill must meet the Repairing Standard, and damp or leaks can fall short of it, so failed sealant is best replaced before it becomes a complaint.
The cost reflects the work involved, not a rough estimate. That’s why we ask a few questions first.
What you get with us
- Experience in homes, commercial sites and hotels
- We leave the area clean and tidy
- We agree the colour with you first
- Rated 4.9 stars on Google
Take a look at what affects the cost and our reviews.
Govanhill buildings and the weather
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. Glasgow’s tenements are largely red and blond sandstone, and sandstone is porous, so any sealant against it has to be one that won’t stain or attack it.
If you live in an older home near Govanhill Church, older walls, gutters and the joints where extensions meet them need a flexible sealant. For landlords with property near Queens Park (Glasgow) station, split movement joints are easy to miss on a rental until damp shows inside.
Govanhill is about 1 mile south-east of Glasgow, in Glasgow. From the centre of Govanhill to the outskirts, external mastic is available for homes and businesses alike. Our Glasgow coverage runs to 183 places, and Govanhill is one of them.
Our applicators cover all of the G42, G41 and G5 postcode area for external mastic. Local streets include Agnew Lane, Dixon Road and Ardbeg Lane, and we cover them all. Other places close to Govanhill include Crosshill (1 mile south), Strathbungo (1 mile west), Pollokshields (1 mile west), Hutchesontown (1 mile north-east) and Laurieston (1 mile north). Further out, we also cover Hillhead (3 miles north), Dowanhill (3 miles north-west), Woodside (3 miles north), North Kelvinside (3 miles north), Partickhill (3 miles north-west) and Yorkhill (3 miles north-west).
Landmarks near Govanhill
Locally, jobs take us to homes and businesses close to Queen's Park, John Bosco Secondary School and 51 pub and the streets around them. Nearby too are Our Lady and St Margaret's Primary School (1.2 miles north-west) and Glasgow Women's Library (1.4 miles north-east). There’s a railway station in Govanhill itself: Queens Park (Glasgow) station. A little further out are New Victoria Hospital (0.6 miles south) and Princes Square (1.5 miles north). Open spaces near Govanhill include Hogganfield Loch and Cathkin Braes.
What happens on the day
At the end, we look at the finished work together. The visit itself normally takes anything from a few hours to several days, depending on the building, depending on how much there is to do. In a Scottish city, a lot of jobs are in tenement flats, up a common stair from a shared close. In Govanhill, it helps to know the floor, the door entry arrangements and the nearest parking.
- We start by walking round the building and agreeing the joints and the access.
- 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.
- The exterior sealant is applied, tooled and checked along its length.
Before we arrive
- On commercial sites, let us know about site rules
- Clear the area around the work
- Tell us about access, such as stairs, a lift or high-level joints
Getting a quote
It all starts with a short chat. Describe the problem, the location and the size of the job. Whenever you’re ready, email us at info@mrmastic.co.uk.
Read more
Landlords, agents and businesses in Govanhill
Landlords and agents in Govanhill can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order.
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. Several properties can be quoted together.
What the job involves on each surface
Brickwork movement joints
Brick walls have vertical movement joints to absorb expansion. They’re resealed over backing rod with a low-modulus sealant coloured to suit the wall.
Cladding and façade panels
Cladding and façade panels are usually separated by sealed joints. We reseal them with a sealant suited to the panel material.