Glasgow · Scotland
External Mastic in Govan
We cover Govan for sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Brick movement joints where the sealant has split
- Panel joints letting water in
- Plants rooting in failed movement joints
How the visit works
A visit follows a simple pattern: we look at the joints together, mask and protect the surrounding surfaces, carry out the job and tidy away. Most jobs take anything from a few hours to several days, depending on the building. For a tenement in Govan, work inside your flat is between us and you, while shared parts may need the factor or neighbours to agree. Tell us which applies when you book.
- 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.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- On commercial sites, let us know about site rules
- Let us know about parking restrictions
- Tell us about any water getting in
Getting a quote
Want a quote for external mastic? Please send an email to info@mrmastic.co.uk with a few details. We’ll explain what we’d do and give you a clear quote before we start.
Advice
About our external mastic in Govan
Movement joints let brickwork, render and cladding expand and shrink without cracking. 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. If you are dealing with brick movement joints where the sealant has split and plants rooting in failed movement joints, we can put it right.
Stone-built tenements in Scotland’s cities share their roof, gutters and outside walls between every flat in the building. In Govan, work on shared parts of a tenement is normally agreed between owners, often with a factor arranging it.
The work is covered for a year after we finish. If anything is not right with it, drop us a line at info@mrmastic.co.uk.
- Place
- Govan (G51, G11, G3)
- Region
- Glasgow
- Guarantee
- One year on every job
- Quotes
- A clear price before work begins
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
DIY versus a professional finish
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
What affects the quote in Govan
The price is agreed before any work begins. It takes into account:
- When we can work, for business premises
- How many rooms, windows or areas are involved
- The number and length of the joints
- Any mould that needs treating
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote and we will talk you through it.
Helping us quote
Photos by email are helpful but not essential. Please mention:
- The address or postcode of the job
- Roughly how big the job is
- The problem you’ve noticed
- Pictures of the joints, sent by email
We quote each job on its own, 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.
Other services in Govan
When it isn’t the sealant
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
- Cracks in the bricks or render themselves, away from the joints
If in doubt, send an email to info@mrmastic.co.uk and we will say what we think before you book.
Where we work in Govan
- Copings & trims
- Façade panels
- Render & cladding joints
- Concrete & block
- Brickwork movement joints
- Joints between brick and frames
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Keep movement joints as flexible joints, not mortar
- Keep high-pressure jets off the joints
- Check the sealant is paintable before painting near it
- Show decorators and builders where the movement joints are
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges over time.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years so early resealing is worth it.
Do you need external mastic in Govan?
UV, rain and frost all age exterior sealant. In time it goes hard, crazes on the surface and stops stretching, so the joint eventually tears or comes away from one side.
Signs it’s time to call us include:
- Old sealant gone brittle and cracked
- Plants rooting in failed movement joints
- Joints with sealant missing in places
- Gaps where render, brick and frames meet
If you live in an older home near St Mary's Church, older walls, gutters and the joints where extensions meet them need a flexible sealant.
What to look for in a quote
- What insurance they hold
- How the surfaces are prepared before sealing
- What guarantee comes with the work
- When the joint can take water or movement
Work for landlords, hotels and businesses
If you manage several properties in or around Govan, several properties can go on one quote. Send us the addresses and the work at each, and photos by email help.
Landlords and letting agents in Govan can book us as well as householders. Sealant work between tenants is a simple way to keep a property in good order.
Govan buildings and the weather
Harled (roughcast) walls are common in Scotland, and joints where harling meets other materials need a sealant that can grip and flex. Govan is in the west of Scotland, which is wetter than the east, which means movement joints and outside wall joints has to cope with a lot of rain.
If you let a flat or house near Partick station, split movement joints are easy to miss on a rental until damp shows inside.
Govan is about 1 mile south of Partickhill, in Glasgow. Jobs in Govan get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Our Glasgow coverage runs to 183 places, and Govan is one of them.
All of G51, G11 and G3 is covered for external mastic. Local streets include Govan Road, Pearce Lane and Broomloan Road, and we cover them all. Nearby, we also carry out external mastic in Moorepark (1 mile south), Ibrox (1 mile south), Partick (1 mile north), Thornwood (1 mile north-west) and Linthouse (1 mile west). Further out, we also cover Calton (3 miles east), Langside (3 miles south-east), Yoker (4 miles north-west), Mount Florida (3 miles south-east), Hillpark (3 miles south) and Merrylee (4 miles south).
Local landmarks in Govan
Typical jobs here are in homes near Isabella Elder Rose Garden, Glasgow University Library and St Peter's Boys School, among other places. The nearest railway station is Partick station, roughly 0.6 miles north. Well-known places in the area include Chinatown (1.9 miles east) and Glasgow Science Centre (0.6 miles east). Green spaces nearby include Castle Hill and Kilmardinny.
Govan questions
Do you work for landlords with property near Partick station?
Yes, we work for landlords and letting agents. You can send an email to info@mrmastic.co.uk with the address and a few details, and we will give you a fixed price before we start.
How is work on the outside of a tenement in Govan generally arranged?
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 don’t, and we can quote for the factor or the owners directly.
Are you insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
Can I do it myself?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
What information do you need?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
Do you work in Govan?
Yes. We’re based in Crawley and work across South East England, London and Scotland, and that includes Govan.
Is it OK to seal over old sealant?
No. We remove every bit of old sealant first.
What is a movement joint?
Most straight vertical gaps in brickwork are movement joints. It gives the wall room to move.