Acrylic render vs cement render.
Neither one is simply better. They suit different walls and different jobs. Here’s a plain comparison, and how to pick.
| Acrylic Render | Cement Render | |
|---|---|---|
| What it is | Render made with acrylic polymers | Traditional sand, cement and lime |
| Flexibility | Flexible — moves with the house, resists hairline cracking | Rigid — more prone to fine cracking if the wall moves |
| Weather & UV | Excellent — built for sun and weather | Good — usually sealed or painted for protection |
| Colour | Finished in a coloured final coat, through-coloured or a membrane top coat | Painted or top-coated after curing |
| Old soft masonry | Get advice first: the render has to suit the wall | A hard cement render can trap moisture and salt in old soft brick or stone |
| Maintenance | The colour coat is renewed every several years | Repaint over time to protect and refresh |
| Best for | Modern low-maintenance finishes, new builds, refreshes | Solid masonry, base coats under other finishes, a classic painted look |
So which should you choose?
For most modern homes and full-house makeovers, acrylic render is the usual pick: a clean single colour, a finish that copes with small movement, and colour in the final coat. It’s also the render Dino focuses on most.
Cement render still earns its place on solid masonry and as the sound base coat under a topcoat. Sometimes the right answer is both: a cement base with an acrylic finish on top. On an old soft brick or stone house, get advice on the right render before any work starts.
Tell Dino about your walls for a free quote.
Acrylic vs cement: quick answers
Is acrylic render better than cement render?
Neither is better for every wall. Acrylic renders contain polymers that make them more elastic, so they cope better with minor movement, which is why lightweight panels are usually finished with acrylic systems. Cement render suits solid masonry, is more rigid, and is normally painted once it has cured. The right choice depends on the wall, the look you want and the upkeep you’re happy with, and sometimes it’s both: a cement base under an acrylic finish.
Is cement render a good idea on an old brick or stone house?
Not always. Older brick and stone walls, often laid in soft lime mortar, need to breathe, and a hard, dense cement render can trap moisture and salt in them. A salt damp guide written for SA’s heritage department and Adelaide City Council calls hard cement render along the base of old walls a poor treatment for damp, because the damp rises behind it and comes out above. Any new render should suit the masonry underneath, so if your house is old, get advice on the right render before work starts.
Which lasts longer, acrylic or cement render?
Both are long-term finishes on a sound wall; what wears out is the coat on top, so upkeep matters more than the render type. Cement render is often finished with ordinary exterior paint, which Rockcote puts at 5 to 7 years before repainting, while a thicker membrane coating, which can go over either render, lasts 10 to 12 years. Washing the walls down about once a year helps either finish last.
Can you put acrylic render over cement render?
Yes. Render makers list cement render as a base for their acrylic finishes and texture coats, as long as it’s fully cured and well bonded, which takes about 28 days for site-mixed sand and cement render. Some systems start with a primer that helps stop salts coming through. Old cement render that’s cracked, loose or hollow needs attention before anything goes over it.
Acrylic or cement render on Hebel, blueboard or foam panels?
Usually acrylic or polymer-modified render, not plain site-mixed sand and cement. Lightweight panels take a render system made for the panel: AAC panels like Hebel are porous and need a render rated for them, blueboard is finished with a texture coat system, and foam gets a mesh-reinforced polymer render under levelling and finish coats. The Hebel, blueboard and foam pages cover each one.
Still not sure? Ask Dino.
Tell Dino about your walls and the look you’re after. Quotes are free.