When installing radiant heat under a slab, you should pressure test your system before, during and after the slab is poured. Pressure test before you pour the slab to find and fix any defects before the work is done. Pressure test during the pour so that if there is something wrong, you can fix it before the pour is complete. And pressure test after you complete the pour just to be sure that everything is still working properly before you begin using the radiant heat system to heat your home.
Pressure test kits, radiant heat manifolds and other radiant heat supplies can be found at www.supplyhouse.com
