John writes from Ludlow, Vermont: "We are excavating our cinder block foundation and will have a rubberized spray-on sealer coating applied. Can we then have 'pink board' insulation applied to the foundation? Will the seal coating react to the rigid insulation? What R-value would you recommend?"

Answer: PINK! My favorite color! The spray-on sealer will only affect the FOAMULAR® if it is petroleum based. The safest way to install it is to let the sealer completely cure before installing the FOAMULAR. The R-Value should be determined by your local building code.