Craven Case Study
Type: Liquid Floor Screed, Underfloor Heating
In May 2019, Easyflow Ltd successfully completed the first of three 100sqm new build detached properties in Shropshire for Craven Building Contractors. This ongoing project consists of the supply and install of 100mm thermal insulation, underfloor heating and 50mm liquid floor screed – delivered to a high standard and within programme.
For each plot one and a half days on site were allocated; on the first day our team of installers met the client on-site in the morning to double-check the manifold position and discuss datum points for the screed level. 100mm thermal insulation was installed with a 25mm upstand for thermal bridging. A 500 gauge polythene was installed along with the perimeter edging foam; this is a 5mm to 10mm thick roll of foam which is installed to all perimeter and internal walls to allow for expansion, this is necessary even when a 25mm insulation upstand is in place. The edging foam is 100mm deep and should be trimmed down after the screed is dry but should not be completely removed. Once the polythene was in place and the joins are lapped and taped the installers could set the laser level to the agreed datum and mark the required screed levels onto the polythene, in doing so they could confirm the exact amount of screed required for the pour the following day. The installation team used the computer-aided design to help plan out the pipe loops, 16mm PE-RT pipe was attached to the flow port on the manifold and each loop was installed at 200mm centres as per the design, the pipe was attached to the return port upon return of the loops to the manifold.Upon completion of all loops the system was filled with water and pressure tested to 3 bar. The liquid floor screed was supplied, pumped and installed the following morning after the underfloor heating system was left under pressure overnight. Heatmiser touchscreen thermostats and associated wiring centres were left with the client for the electrician to wire in. After the heat source is connected to the manifold by a plumber/ heating engineer the Easyflow team will return the site to ensure the manifold flow rates are all set up correctly and to teach the client how to properly use the system.