Answer
Apr 18, 2022 - 10:43 AM
The only way you can get this to work is to somehow insert an enclosed watertight mailbox inside the barn structure. We carry nothing that can coat and fill in a gapped surface to make it waterproof.
Apr 18, 2022 - 10:43 AM
View all Wood Stains & Sealers Questions & Answers
View all SAMPLE - Vermont Natural Coatings, Exterior, Penetrating Water Proofer Questions & Answers