Structural silicone glazing (SSG) is a popular glass retention method for its aesthetic appeal and durability. Typically, SSG is shop fabricated but certain conditions require installation of SSG in the field, which introduces a variety of logistical, quality control, and quality assurance challenges.
On two different Midwestern projects, the surfaces of sealants exhibited gas-filled blisters, often referred to as bubbling, within a week of installation.
by Arthur L. Sanders, AIA, and Lawrence E. Keenan, AIA, PE In both new construction and rehabilitation projects, sealant joints are often given short shrift when it comes to time and attention, as well as budget. Sealants often comprise the lowest percentage of a project’s overall cost—this is surprising considering all these products are asked to do.
When it comes to a leak-free building, the sealants are the backbone of the whole cladding system. Even the best exterior aluminum, masonry, glass, steel, or exterior insulation and finish systems (EIFS) are only as good as the sealants used to weatherproof the joints, penetrations, and transitions.
Elastomeric wall coatings (EWCs) are often used to waterproof porous cladding, both in new construction and as a solution for failed weather barriers. Since they are more expensive than paint, it is important to achieve maximum service life.
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