Water Proofing & Joint Sealants
MC-Master Foam
Backing filler for concrete Joints
Rubberized boards based on Ethyl Vinyl Acetate E.V.A. ready to use during and after construction .complies with ASTM D 1752-84 type 1
Description
Rubberized boards based on Ethylene Vinyl Acetate (EVA), ready for use during and after construction. The source references ASTM D1752-84 Type 1.
Where to use
Used as back filler for construction joints. Used as backing filler for concrete joint sealants and as a secondary barrier for the joint sealant. Can be used as a temporary joint filler.
Advantages
Highly resistant to water absorption. Highly resistant to mild chemicals. Weather resistant. Highly elastic. High compression ratio, approximately 40-50% of total thickness. Temperature resistant from -40°C to +75°C. Compatible with different joint sealants, including polysulphide and polyurethane. Easy to apply. Available in different required thicknesses.
Technical data
Color Black Thickness Up to 3 cm (one layer) Density 140 kg/m³ at 25°C Water absorption (ASTM 1016-94) < 0.4 g/cm³ Resilient down to -26°C Compressed thickness at 7 ton/m² load 30% Permanent compression set 4-9% Thermal resistance 0.595 m²·°C/W Thermal conductivity 0.027-0.040 W/m·°C Dimensional stability under heat -0.1 to +1.5% Chemical resistance Good Toxicity Non-toxic
Method statement
Construction joints: 1) Use MC-Master Foam as back filler through the joint depth, leaving the small removable part uppermost. 2) Cast concrete around the strips to surface level. 3) When the elastomeric joint sealant is to be applied, remove the small part and clean the joint. 4) Apply the elastomeric joint sealant in accordance with the sealant manufacturer's instructions. Expansion joints: 1) Clean the joint from loose particles. 2) Cut MC-Master Foam to the required dimensions with a sharp knife. 3) Force MC-Master Foam into the joint to the required depth. 4) Apply the elastomeric joint sealant as specified. MC-Master Foam can be supplied in light, medium and rigid categories and in job-specific dimensions.
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