Cumulus is an 11 mm APT Underlay from the Cloud 9 range. At 11 mm Cumulus is Ball & Young's thickest underlay and is designed for use in luxury use areas were a high degree of comfort is required.

Cumulus has excellent thermal insulation properties and has a Tog rating of 3.1.

Cumulus has a Cloud 9 paper backing with green printing and film bottom surface and is supplied in 15 mē easy lift rolls weighing approximately 18 kg.

Cumulus is guaranteed for the lifetime of the carpet when used in recommended areas.