The water pipes are all PEX (cross linked polyethylene), but where sharp bends are needed, such as going out through the wall to the water tank, the pipes are copper. Len, my plumber, also lagged all the pipes that are going through the hemp walls. When I asked why he used the thick black lagging around the pipes, his reply was that he had it sitting around in his garage for a while, it being the type of lagging used on solar hot water systems, but when he ran out of the black he will use a thinner green lagging, like used for hot water pipes, for the rest of the pipes that go through the hemp walls.
|Lagged pipes running through what will be a hemp wall
|Pipes coming out through hemp wall to and from water tank
|Gas (yellow) and hot and cold water pipes running to kitchen
|Two test sections of hemp wall done and formwork moved up
|This section of wall was made with one mix