can this product be used in a water damage storage building on the studs

Yes, the product is suitable for that application.

Hi, Thank you for your question and interest in Concrobium products. Our Concrobium House & Deck Wash can be used on the studs of a building. Just keep in mind that the product is an exterior cleaner for dust, dirt, and grime. It is not an antimicrobial and it does not eliminate or prevent mold. If you are looking to eliminate and prevent mold, may we suggest our antimicrobial, Concrobium Mold Control. If the surfaces are water damaged, we recommend drying out the surfaces to below 20% Moisture Content prior to your application. We hope this answers your question. Feel free to contact us again if you require further information.