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St Astier Limes and MortarsGuidance for THERMOCROMEX – one coat render for New Build Projects A fast application and finishing ready mixed mortar based on Natural Hydraulic lime specially formulated to work on all backgrounds, including light weight cement blocks, clay blocks, bricks and stone, to achieve 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 |
| Technical Data | Test std. CSTB & EN/BS 998.1 |
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| 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) | |
Packing: in 30 kg. bags / 49 bags per
pallet (1.47T) Mortar preparation: add between 5.5 and
6 (max) litres of clean water par bag of 30 kg. Application recommendations: on properly prepared background offering adequate keying, cast on or spray on up to 10 mm in one pass for floated finishes or 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. |
Mix for maximum 10 minutes.