VEVOR Double Reflective Insulation Roll, Foam Core Radiant Barrier, 3.2 mm 23.8 in x 50 ft, Double-Sided Aluminum Foil EPE Foam Heat Reflective Shield, Thermal Insulation Roll for Window RV Roof

This can be used on the inside of a wall.

We do not recommend using this product on the walls of floor-mounted swimming pools.

Yes you can If this answer does not resolve your issue, please contact us again for assistance.

While the product description doesn't mention sound insulation benefits, customers appreciate its versatility. One review mentions using it under the underside of sheathing for roof insulation.

While the product description doesn't mention anything about curved surfaces, customers have used it for insulation under the roof. One review mentions using it on the underside of roof sheathing.