There are several explanations as to why warehouse clubs charge membership fees and. how the fees play a role in the competitive landscape of the retail grocery market. We provide. another insight into the nature of the membership fee using a model of price competition. between a warehouse club and a supermarket.
A prescriptive ignition barrier is required within a residential application over the surface of the polyurethane foam insulation when used within accessible attics or crawlspaces. Interior surfaces in inhabited buildings should be covered with a 15 minute thermal barrier for fire protection.
If I recall correctly (memory), new construction in south Florida requires IGU windows to meet the new energy code - with the caveat that it is possible to build a home with energy performance trade-offs that would allow non-IG glass to be used.