Thermoflex underfloor heating loose cables are perfect when there are strict budget constraints. This system has a 150w heat output & consists of a thin loose cable for the best flexibility when installing. Loose heating cable kits are best suited to non-standard shaped rooms & each kit comes complete with floor primer & roller. Cables must be spaced 6.5cm apart to achieve the stated heat output. Please choose an electric underfloor heating system that will cover 90% of your floor area. It is best to order slightly less than you need than have too much as the cables CAN NOT be cut or shortened.