"We've used H+H aircrete blocks and Thin Joint system for the last ten years, sticking with it because it's such a good system for speed and ease of construction with minimal waste," says Steve Williams, a director of housebuilder Williams Homes.<br> <br> William Homes has used H+H Jumbo Bloks and H+H Celcon Blocks with Thin Joint Celfix mortar to build Craven Gardens, a development of eight detached four and five bedroom homes in Melton Mowbray. The homes are designed to combine modern materials with energy efficient, low maintenance construction.<br> <br> H+H 100mm aircrete Jumbo Bloks make up the inner leaf of external cavity walls, joined with Thin Joint Celfix mortar. Walls include a 100mm fully filled cavity using DriTherm semi-rigid cavity slabs with a traditional facing brick outer skin.<br> <br> The same blocks were also used for internal partition walls, dry lined with a plaster skim on the ground floor and timber stud partitioning on the upper floors. H+H Celcon Blocks were used as a lightweight, thermally efficient infill on the beam and block floor, H+H says.<br> <br> www.hhcelcon.co.uk or enter E0081 on the reader enquiry card