4m2 800w underfloor mat 200w p2m sunstone offers you an electric underfloor heating system that will give you luxury comfort and warmth better still it will help reduce your energy costs and impact on the environment mat and loose wire cable heating systems can be effectively covered by flexible tile adhesive no need for additional screed heating systems come with 10 years warranty and ce certification thermostats come with a 1 year warranty compatible with warmwup thermostats