As with carpeted floors, there are two options for safely heating vinyl/Karndean floors and these both involve covering the heating element with screed or levelling compound to help spread the heat evenly across the floor. If you are laying a screed then you can use an in-screed heating cable with a maximum output of 160W/sqm, which provides a very stable temperature, and is the most cost effective method of installing underfloor heating. If you are not laying a screed then we recommend laying our 160W/sqm heating mats and covering these with at least 11mm of self-levelling compound to help spread the heat. This installation method ensures a low build height and provides a fast reacting system.