Celcon Block Standard Grade is BBA certified and has a compressive strength of 3.6N/mm2. Its all-round performance allows a 100mm Standard Grade Celcon Block to be used consistently throughout a build, eliminating on-site confusion. Suitable for internal and external leaf of cavity walls, solid walls, separating walls, partitions, multi-storey buildings, foundations, beam and block floors, and flanking walls. The H+H Celcon Block Standard Blocks 3.6N 440 x 215 x 100 mm are lightweight and have a compressive strength of 3.6N/mm2. Offering fantastic thermal performance, the Celcon blocks are famous with builders and homeowners alike. They are also fire and moisture resistant.