Restoration and decorationReturn
Prompt natural cement can be used in a mortar, in a mix with lime, to point stones. This also applies near the sea for protection or supporting walls.
Areas of use:
Old buildings, decoration, landscaping, sanitation, sea environments, etc.
Benefits of using Prompt natural cement:
The light ochre colour and permeance qualities make Prompt natural cement a good choice for this use (mixed with lime), in particular in cold and/or wet weather, and where there is a risk of bad weather. With Prompt natural cement, even when – as if often the case – thick applications of product are necessary for large repointing surfaces, cracking does not occur with shrinkage.
Doses and preparation:
The most suitable natural lime–Prompt natural cement mortars are those with the two lowest dosing levels: lean mix mortar and medium mix mortar. Comply with the rules defined in DTU 20-1 Manual for use or use a projection.
Open time at 20°C
Lean mix mortar
Overall dose 280 kg/m3
|in vol.||4||1||15||25 mn|
|in weight||320 kg||100 kg||25 mn|
Medium mix mortar
Overall dose 340 kg/m3
|in vol.||3||1||10||20 mn|
|in weight||240 kg||100 kg||20 mn|
Fat mix mortar
Overall dose 360 kg/m3
|in vol.||2||2||10||15 mn|
|in weight||160 kg||200 kg||15 mn|
NB (Prompt natural cement only mortars):
In certain cases, for the purposes of speed or colour, or for minor works, Prompt natural cement-only mortar (with delayed setting using Tempo) can be used. Use a moderate or low dose so as to maintain porosity, which allows gas transfer.
Doses for information (in volumes):
|Hard stone/moderate dose||1||2|
|Soft stone/low dose||1||3|