Features and benefits: • Preformed mouldings eliminate the need for site fabrication to prevent errors through poor workmanship • Easy to handle, flexible, tough, durable and puncture resistant • Can be used for multi-storey or high-loading applications – will not extrude under high loads up to the point of compression failure of wall • Wide range of standard components with special tailor made accessories also available • Fully itemised scheduling service Prefabricated sumps are required when a sub floor depressurisation is required under full radon protection. The sump is installed beneath the floor slab in non suspended floor applications and vented to atmosphere via a connecting 110mm drainage pipe to an external source and capped off with proprietary products i.e. air bricks & telescopic under floor vents or roof vents.