
What are U-values, R-values and Lambda Values?
Lambda, R-values, U-values, Thermal Conductivity and Thermal Resistance simplified in one article
Knowledge Article4 min read


K-Roc Flat Roof Slab 70/039 is a European Classification (Euroclass) A1 rock mineral fibre for flat roofs waterproofed with mechanically fixed single-ply waterproofing.
Product Highlights
Rock mineral fibre insulation with a thermal conductivity of 0.039 W/mK
Fully compatible with most mechanically fixed single-ply waterproofing systems