Two materials are sealed together by having an impermeable barrier between them. Many sealants are available these days for quality masonry adhesion including polyurethane, butyl rubber and silicone. Even modern masonry sealants can fail and cause a need for costly repairs due to cracking, water and brick damage. Most masonry sealants will last approximately 20 years, though both new and old buildings are vulnerable to sealing issues. Masonry sealant failure…