Updated September 2026 · Will Brain, technical lead
Inside and out
No added cement
Zero VOC
Built for heritage work
Outside, Rockcote Lime Plaster goes on in three coats, with fibreglass mesh embedded in the scratch coat. Inside, it is fibreglass mesh, Lime Plaster Basecote, then the Lime Plaster finish, put on as one top coat or as two finer ones. Rockcote’s golden rule holds either way: two thin coats beat one thick one.
Internal + external
The classic: the finish most people picture when they think of lime render. A soft, flat mineral surface that matures beautifully; true lime, no cement, heritage-compliant. One of our two external finishes, with Canapulino.
The build
Off-white to white as standard, and it can be toned with alkali-resistant mineral oxides for a range of natural colours and a soft patina. Some fading can occur depending on the pigment.
Zero VOC
No cement
2–4 mm
28 days
Rockcote rate its water resistance excellent and its abrasion resistance very good. Like all lime, it keeps curing for weeks after it goes on.
In everyday use, yes. Rockcote call it Lime Plaster; most people search for lime render. It's a fine-grained lime finish, trowelled on in thin coats.
Yes. It's the only finish in our range for inside and out. Outside we build it in three coats, with fibreglass mesh embedded in the scratch coat.
No added Portland cement. It's a lime plaster, and lime is what keeps it breathable: Rockcote call breathability the number-one advantage of a lime system.
Rockcote describe it as complying with regulations on the refurbishment and repair of heritage-listed and architecturally sensitive buildings, thanks to its traditional lime and sand make-up.
Yes, with alkali-resistant oxides, to a range of natural tones. Ask us for a real sample card before you choose.