Thickness of installation is typically 100mm insulation plus a further 70mm of screed, total of 170mm above original concrete floor. Thickness of installation can be as low as 30mm insulation plus a further 20mm of screed plus 18mm flooring grade chipboard, total of 68mm. Insulation levels in some circumstances can be reduced further giving a minimum thickness of 38mm above the concrete floor. FlexAir® bubble disc diffusers are made of high-strength polypropylene with 3/4" MNPT connections. Each diffuser has a minimum of 6,600 engineered air release orifices, which is up to 20% more than comparable models. The special design of the EPDM membrane, with its engineered thickness taper, results in full utilization of the membrane surface, even at low airflow operations.

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