MONO ST. ASTIER - one coat render


A ready mixed mortar based on Natural Hydraulic lime specially formulated to achieve excellent waterproofing, low capillarity, high breathability, elasticity and vibrant coloured finishes. Substantial savings in cost of painting and maintenance are achievable.

Technical data   Test std. CSTB & EN998.1
Dry Density(hardened product) 1650g.l +/100g/l Meruc M 4
Elasticity moduli 28days Between 5000 and 10000 MPa Meruc E 3
Compressive strength 28 days Between 4 and 5 N/mm2  
Flexural strength 28days Between 2 and 2.5 N/mm2 MerucR 4
Water retention (on paste) Between 86% and 94% ( ± 2%) MerucU 4
Vapour permeability 0.5 g x m2 x h x mmHg EN 1015-19
Capillarity Below 1 g/dm2.min1/2 Meruc C 1
Fire resistance Class A (all uses)  
Granulometry: TF    0 -1.3 mm
  F    0 - 1.8 mm
M     0 - 2.5 mm
 G     0 - 4.0 mm

Packing: in 25 kg. bags / 40 bags per pallet (1T)
Colour Range: please ask your St. Astier distributor.
Storage/shelf life: in dry store, up to 12 months from production date. Reseal opened bags a.s.a.p.
Consumption: 1.7/1.8 kg. per mm of thickness per m2.
Mortar preparation: add between 4 and 5 (max) litres of clean water per bag of 25 kg.
Mix between 5 and 10 minutes max.

Colour Chart Link

Application recommendations: on properly prepared background offering adequate keying, cast on or spray on a minimum of 10 mm in one pass for floated finishes or a minimum of 15 mm if a scratched finish is required. On waterproofed or smooth backgrounds spray or cast on a 1st bonding coat of about 3 mm adding 500 grams of SBR per bag of product. Straighten the work immediately after with an appropriate tool. Float (sponge, wooden or plastic) after 2-3 hours or more depending on weather conditions.
Not suitable for light weight, porous cement blocks.
Do not work in temperatures below 5oC or above 30oC. Protect fresh mortar from rain, frost or strong drying wind. In hot weather, dampen the background adequately and cure the work by applying a light water mist several times for a period of 72 hours.
When Monostastier is applied as a finishing coat on a existing backing coat, the maximum thickness for floated finishes is 5-6mm or 6-8mm for scratched finishes. Please refer to: Applying One Coat renders and plasters. Small Logo

The above details are given for general information purposes and do not constitute a specification.

For further Guidance, contact your St Astier Distributor.
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