Can Handi-Foam Slow Rise be used in pool/spa applications?
A. Handi-Foam SR is commonly used in this application to fill a void under a tub to stop flexing, provide structural support, insulate and reduce vibration. However, installers should be aware that the foam will expand at least 3 to 5 times and exert a lot of pressure on the tub. Use a brace to secure the tub/spa or fill the tub with water to add weight to keep the tub in place when foam is rising and curing.
