THERMOCROMEX - one coat render

THERMOCROMEX© is a ready mix, sprayable, rendering mortar based on formulated hydraulic limes from Saint-Astier to be applied on multiple substrates and to achieve a timeless and perfect finish: Excellent waterproofing, Low capillarity, High breathability, Elasticity and Vibrant Coloured finishes. Can be supplied to a custom colour with substantial savings in cost of painting and maintenance.
Suitable Background: Masonry units conforms to BS EN 771, or Mineral Background with Rt ≥ 0.3 MPa

Technical data Test std. CSTB & EN/BS 998.1
Dry Density (hardened product) 1450g.l +/100g/l Meruc M 4
Elasticity moduli 28days Between 4000 and 6000 MPa Meruc E 3
Compressive strength 28 days Between 4 and 6 N/mm2 CSTB
Flexural strength 28days Between 2 and 2,5 N/mm2 Meruc R 4
Water retention (on paste) 94% ( ±2%) Meruc U 4
Vapour permeability 1.61.10-9kg/m2sPa (0.772 g x m2 x h x mmHg) EN 1015-19
Capillarity Between 1 and 2.5 g/dm2.min1/2 Meruc C 2
Thermal conductivity 0.54 W/m.K EN 1745
Fire resistance Class A (all uses)  
Granulometry: TF    0 - 1.3 mm
  F    0 - 1.8 mm
 M    0 - 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: 1.6/1.7 kg. per mm of thickness per m2.
Mortar preparation: add between 4.5 and 5 (max) litres of clean water par bag of 25 kg.Mix for maximum 10 minutes.

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.
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 Thermocromex is applied as a finishing coat on an existing backing coat, the maximum thickness for floated finishes is 5-6mm or 6-8mm for scratched finishes. Please refer to: Thermocromex application recommendations
The above details are for general information purposes and do not constitute a specification.
For further Guidance, contact your St Astier Distributor.
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