SCHOMBURG GmbH & Co. KG Aquafinstrasse 2–8 D-32760 Detmold (Germany) phone + 49-5231- 953-00 fax + 49-5231- 953-333 email export@schomburg.de www.schomburg.com
Technical Data Sheet
THERMOPAL®-SR24 Mineral-based restoration plaster – WTA
SCHOMBURG GmbH & Co. KG Aquafinstrasse 2–8 D-32760 Detmold 13 2 01411 DIN EN 998-1-2010-12 THERMOPAL-SR24 Restoration Plaster (R) Compressive strength CS II Capillary water absorption 24h, prism ≥ 0.3 kg/m2 Water penetration ≤ 5 mm Water vapor permeability coefficient (μ) ≤ 15 Tensile strength 28 d ≥ 0.08 N/mm2 Fracture appearance B Thermal conductivity, λ10, dry, Tabulated average value (P = 50 %), DIN EN 1745 < 0.47 Reaction to fire A1 Durability (Frost resistance) Resistant in case of handling according to the technical data sheet
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Mineral-based pre-blended mortar. High volume of entrained air. Vapour permeable. High salt storage capacity. Low consumption per surface area. Ready for rubbing down at an early stage. Hand or mechanical application. For interior and exterior use.
Areas of application: For producing vapour permeable and dry plasters on to damp and/or salt laden walls in interior and exterior installations. Due to the special system properties, possible mould contamination is prevented. Technical Data: Basis: pre-blended dry mortar Colour: grey Water demand: approx. 6 - 6.5 litres per bag Bulk density: 1.0 - 1.1 kg/dm3 Consumption: approx. 9.5 kg/m2 per cm thickness Thickness: see table (page 2) Packaging: 25 kg bags Substrate/ application temp: +5° C to +30° C Storage: dry, 12 months in the original unopened packaging. Use opened packaging promptly.
Art.-No. 2 01411
Substrate preparation: The substrate must be load bearing and free from adhesion inhibiting media such as release agents, dust or other coatings. Remove old render/plaster, paint and laitance up to 80 cm away from the damaged area determined visibly or by analysis. Rake out brittle masonry joints to a depth of 2 cm and clean mechanically. Concrete surfaces must be open-pored. Where the salt content is high, pretreat with ESCO-FLUAT. Apply a splatterdash coat of THERMOPAL-SP as a bonding coat (degree of coverage approx. 50%). As an alternative to THERMOPAL-SP, the splatterdash coat can be produced as follows: Emulsion comprising ASOPLAST-MZ : Water, mixed 1:1 to 1:3. Dry blend comprising cement and washed sand – grain size 0.4 mm - mixed at a ratio 1:2 by volume. Produce a workable consistency from the emulsion and dry blend and use within approx. 1.5 hours. Product preparation: THERMOPAL-SR24 can be prepared in all usual continuous mixing pumps (e.g. with the High-Pump Basic from HTG-HIGH TECH Germany GmbH, Berlin or PFTG4). If, due to machinery equipment, an air entrainment of 20-30% is achieved then there is no need for a secondary mixer. Small quantities can be mixed by hand with a drill mixer. Machinery PFT-G4: Pipe length: Pipe size: Stator / rotor: Spray head for scratch coat: Water addition:
max. 20 m 25 – 35 mm D4-2 LP Nozzle size > 17 mm approx. 300 – 325 l/h
THERMOPAL-SR24 can be applied with appropriate tools such as plasterer‘s float, steel float or similar at thicknesses in accordance with WTA guidelines as well as in single layers up to 3 cm in one operation. After an adequate waiting time the surface can be rubbed off or finished with a felt board. Rubbing off too early produces a binder concentration at the surface and may cause stress cracks.
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As an alternative the surface can be worked with a grid float. This operation can be carried out after 8 – 24 hours dependent on the ambient conditions. Rubbing with the grid float removes the laitance layer which appears and results in a considerably greater diffusion performance. Dependent on the ambient conditions the surface can be smoothened with THERMOPAL-FS33. For thicker coats, apply in several layers. In these cases strike off the previous coat with a plasterer’s darby and immediately the mortar stiffens, roughen up horizontally and allow to dry. Keep to a waiting time of 1 mm per day.
• P rotect from strong sunlight. • Smooth surfaces can be achieved by trowelling with THERMOPAL-FS33. • For coloured finishes use highly vapour permeable silicate paint. • Observe the WTA information sheet “Restoration plaster systems” when planning and implementing restoration work. Please observe a current EU safety data sheet. GISCODE: ZP1
Advice: • P rotect areas not to be treated from the effects of THERMOPAL-SR24. •V ery damp substrates may cause a lengthening of the waiting time before surfaces can be roughened.
Measures taken dependent on the degree of salting in accordance with WTA Degree of salting 1)
Measures taken
low
1. Splatterdash coat 2. THERMOPAL-SR24
≤ 0.5 ≥ 2.0
medium to high
1. Splatterdash coat 2. THERMOPAL-SR24 3. THERMOPAL-SR24
≤ 0.5 1.0–2.0 1.0–2.0
1. Splatterdash coat 2. THERMOPAL-GP11 3. THERMOPAL-SR24
≤ 0.5 ≥ 1.0 ≥ 1.5
1)
Thickness (cm)
Notes As a rule the splattedash dash coat does not completely cover Total thickness: Min. 2.5 cm, max. 4 cm roughen up previous coat as necessary Drying time of individual coats: 1mm/day
To be determined and calculated by preliminary testing.
This technical data sheet is a translation from German and does not consider local building codes or legal requirements. It shall be used as general reference for the product. Legally binding is only the latest German technical data sheet or the latest data sheet from one of our foreign subsidiaries inside their sales territory.
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