Thank you for your question regarding the Delta Classic 400 - 36" X 36" Shower Wall Set and I am happy to help you today.
Unfortunately, we cannot recommend using spray foam within the cavities of the back side of the wall surround or any cavity that may come in contact with the acrylic panels as damage could occur to the material, however you may install insulation between the studs behind the surround. If installed within the studs, we recommend installing a vapor barrier over the insulation adhered or stapled to the side of the studs leaving the front facing stud piece exposed so the construction grade adhesive can be applied to the studs to secure the wall set in place.
To seal the seams of the surround, we suggest using one of the below sealants, which have been tested and approved by our product engineers:
DAP® 3.0™ Kitchen, Bath & Plumbing High Performance Sealant
Red Devil® RD3000™ Advanced Kitchen & Bath Sealant
ECO-BOND® Kitchen-Bath-Plumbing Adhesive and Sealant
I hope this is helpful!
If there is anything going forward that we may be able to help with, please do not hesitate to give us a call on our warranty line at 800-355-2721 and we will be happy to help you where we can.
Date published: 2018-09-24