Published by the Building Research Institute in December 2027.
Influence Of Hygrothermal Cycles on Mechanical Characteristics of MW and EPS Board Fragments with Reinforced Base Coat for ETICS
Report Subject
The goal of the project is to verify the stability of the properties of ETICS fragments without a coat under conditions simulating climatic and operational loads applied to ETICS fragments used on external building constructions.
This report summarises the measured test results of the influence of hygrothermal cycles on the mechanical characteristics of thermal insulation (mineral wool and EPS) with reinforced base coat. The tested parameters were tensile strength perpendicular to faces and shear behaviour with modulus of elasticity. The report contains a description of the conditioning of test samples by hygrothermal cycles, the procedure for determining the tested characteristics, and the measured values obtained.
Description and Identification of Test Sampls
Test samples were chosen as representative thermal insulation materials with a thickness of 140 mm and applied reinforced base coat.
After agreement with the applicant, the following products were selected as representatives:
- Mineral wool Knauf KDS Thermal with nominal dimensions (600 × 1000 mm) and nominal thickness of 140 mm;
- Expanded polystyrene Bachl EPS 70 Facade, thickness 140 mm;
- Adhesive VISCO flex 500 for ETICS (part of the certified system ETICS VISCO alfa VISCO beta);
- Glass fibre mesh VERTEX R 131 (1 × 50 m), R 131 A 101 – 160 g/m², mesh size (3.5 × 3.8) mm.
Sampling of the chosen representatives was carried out at the contractor’s premises: Montako obchods.r.o., Vodárenská 732, 27801 Kralupy nad Vltavou, on 18 August 2016 and 6 September 2016.
During sampling, a representative of the applicant was present. The total inventory was more than ten times higher than the value of the sampled samples. All sampled products were from the same batch.
Total amount of sampled representatives:
- Mineral wool Knauf KDS Thermal TR10 – 12 packages → 24 boards
- Expanded polystyrene Bachl EPS 70 Facade – 8 packages → 24 boards
- Adhesive VISCO flex 500 – 5 packages → 125 kg
- Glass fibre mesh VERTEX R 131 – 1 roll
All samples were bought in their original packaging. Each individual board was indelibly marked by sample number.
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