Poolhouse2k Published on January 13, 2014 in 8 – The SOLVIVA Poolhouse/LabFull resolution (1280 × 960) ← Previous Next → Interior pipes, hoses and valves lead the pool water up to the double-layered copper pipes embedded in the Solviva solar roof. This heats the pool-water as effectively as the 5500-watt heater that came with the pool.