| Property |
Traditional
limewash |
Conventional
masonry paint1 |
Silicate
Masonry Paint |
| Maintenance frequency2 |
2 - 3 years |
5 15 years |
up to 15 years
or more |
| Effect of weathering2 |
weathers back slowly to substrate |
may crack
and peel |
minimal |
| Suitable surfaces for coating |
limeplaster
and most permeable, mineral surfaces |
most clean,
stable surfaces |
all permeable, mineral surfaces e.g. brick, stone and limeplaster3 |
| Suitability for cementatious renders |
poor |
good |
good |
| Typical coats required |
3-5 coats |
1 primer + 2 coats |
1 primer + 2 coats |
| Application method |
roller or brush |
roller/brush/spray |
roller/brush/spray |
| Breathability |
excellent |
very poor/poor |
excellent |
| Moisture resistance |
poor |
excellent |
excellent |
| Resistance to mould/algae |
good
(due to natural alkalinity of product) |
poor/good
(depends on chemical algicides) |
good
(due to natural alkalinity of product) |
| Colour availability |
limited |
excellent |
excellent |
| Acrylics/acrylic softener content4 |
none |
yes (up to 40%) |
very low (5%) |
| VOC content4 |
0% |
up to 8% |
0% |
| Applicator health risks5 |
high
(caustic) |
medium
(VOC and fungicide content) |
low
(silicate primer similar risk to limewash) |
| Appearance |
mottled, varied |
flat, uniform |
vibrant, delicate texture |
| Suitability for restoration work and historic buildings |
traditional |
consideration
should be given
to appearance
and lack of breathability |
effective, durable alternative to limewash |