Painting Rendered and Brick Homes in Doncaster

A large share of the housing stock across Doncaster, Doncaster East and Templestowe is rendered masonry or face brick, and it behaves quite differently to the weatherboard homes that dominate other parts of Melbourne. The preparation is different, the coatings are different, and the failure modes are different.

If you are planning a repaint on a rendered or brick home in Manningham, here is what actually matters.

Render is a system, not a surface

The thing to understand about render is that it is a layer applied over masonry, and it succeeds or fails based on how well it is bonded and how well water is managed around it.

When render fails, it usually does so in one of a few ways. It can debond from the substrate, producing a hollow-sounding area that eventually cracks and falls away. It can crack, either as fine surface crazing or as structural cracking that follows movement in the wall behind. Or it can suffer from moisture coming through from behind, which pushes the coating off and leaves salt deposits on the surface.

Painting over any of those without addressing the cause produces a repaint that fails early and unevenly. This is why a proper quote on a rendered home starts with an inspection rather than a square metre rate.

What we check before quoting a rendered home

Drummy render

Tapping across a rendered wall reveals where the render has lost its bond. Hollow areas need to come off and be re-rendered. It is not a large job when caught early and it is a very large job when a whole elevation has gone.

Cracks, and what kind

Fine crazing across the surface is generally cosmetic and is dealt with as part of preparation. Cracks that run in a consistent direction, that are wider at one end, or that continue through the render into the masonry are telling you something structural is moving. Those need to be understood before they are filled, because filling a live crack simply means it reopens.

Clay soils across parts of Manningham move seasonally, and homes on those sites can show cracking that opens and closes through the year. That is worth diagnosing rather than papering over.

Rising damp and salt

White powdery deposits low on a wall are salts left behind as moisture evaporates through the surface. That is a moisture problem, and coating over it traps the moisture and accelerates the damage. The source has to be dealt with first, whether that is drainage, a failed damp course, or garden beds and paving built up against the wall.

Previous coatings

Knowing what is already on the wall matters. A hard, low-permeability coating over masonry that needs to breathe causes problems, and applying a new coating over an unknown or failing old one is a gamble. Where the existing system is sound, we work with it. Where it is not, removal is part of the scope.

Face brick is a genuine decision

Painting face brick is popular and it is permanent in practical terms. Getting paint off brick afterwards is difficult, expensive and often damaging to the brick face.

That is not an argument against doing it. Painted brick can transform a dated 1970s or 1980s Doncaster home, and there are plenty of houses where the brick colour is the single thing holding the exterior back. It is an argument for being certain, and for using a system designed for masonry rather than whatever was left over from the weatherboards.

Brick also needs its mortar joints assessed. Deteriorated mortar should be repointed before painting, not after.

Coating choice on masonry

Masonry coatings need to handle two competing demands. They have to shed water from outside, and they have to let moisture vapour escape from inside the wall.

Get that balance wrong in the direction of too impermeable and you trap moisture in the substrate, which is how you end up with blistering and peeling on a wall that looked fine when the painters left. Membrane-style coatings have their place, particularly for bridging fine cracking, but they are not a universal answer and they are not a substitute for fixing a moisture source.

The practical guidance is that the coating should be chosen for the substrate and its condition, and anyone who has not asked what the wall is made of has not chosen anything.

Doncaster's larger homes and the access question

Manningham has a lot of substantial two-storey homes on sloping sites, and that shapes the job as much as the substrate does. Elevated rear elevations, split levels, and blocks that fall away sharply behind the house all mean scaffolding or elevated work platforms rather than ladders.

Access should be itemised in the quote. It is a real cost, it affects the timeline, and a quote that has quietly assumed ladder access on a wall that cannot be safely reached from a ladder is a quote that will change once work starts.

Our exterior house repainting and render and masonry painting work is scoped with access included rather than as an afterthought, because it is one of the larger variables on this kind of home.

Sequence and timing

On a rendered home the order is repair, then preparation, then coating. Render repairs need time to cure before they are painted, and rushing that produces patches that read differently through the finished coating.

Melbourne's autumn and spring generally give the most workable conditions. Deep winter brings short drying windows and low surface temperatures, and midsummer can push surface temperatures on a north or west wall higher than coatings want. Neither is impossible, both need managing.

What a good quote covers

It should state the condition found, including any drummy render, cracking or damp. It should set out the repair scope separately from the painting scope. It should name the coating system and say why it suits the substrate. It should describe access. And it should be clear about what happens if more failed render is found once work begins, because on an older rendered home that is a realistic possibility.

If you have a rendered or brick home in Doncaster, Doncaster East, Templestowe, Bulleen or Donvale and you would like a proper assessment rather than a rate per square metre, we are happy to come and look at it.