This document provides details for the underfloor heating layout and installation for a third floor project. It includes: 1) A drawing of the underfloor heating pipework layout showing the location of manifolds and thermostats throughout the floor. 2) Notes on installation requirements and recommendations for laying pipework, screeding, conditioning the floor, and compatible floor coverings. 3) Specifications for each manifold including flow rates, pressures, and thermostat locations for the circuits. 4) A schematic of the control system wiring including thermostats, actuators and control units.