In general, it is not advisable to pour concrete directly onto insulation. Concrete is a heavy material that can exert significant weight and pressure, which can compress or damage insulation materials. Additionally, concrete requires a solid, stable base for proper curing and structural integrity.
Insulation is typically used as a thermal barrier and is not designed to support the weight and load of concrete. Placing concrete directly on insulation can lead to several issues, including uneven settling, cracking, and structural instability.
If you need to install a concrete slab or foundation, it is important to follow proper construction practices. The typical process involves preparing the site, installing a suitable subbase or foundation, and incorporating reinforcing materials like rebar or wire mesh. This subbase provides a stable and load-bearing surface for the concrete.
If insulation is necessary for thermal or moisture considerations, it is typically placed on top of the concrete slab, between the slab and the flooring material. This helps prevent heat loss, reduce condensation, and improve energy efficiency.
To ensure a successful concrete installation, it is recommended to consult with a qualified contractor or structural engineer who can evaluate the specific requirements of your project and provide guidance on proper construction techniques.