NPI NPI's (npistoulil) Blog

Question: I understand that having more than two layers of asphalt shingles is considered defective no matter what the age of the top layer, why?Answer: Adding new layers of asphalt shingles over old can reduce the useful life of the shingles or even the roof itself in several ways: Added layers ...

Question: A friend told me I need to install a GFCI in my kitchen. Can you tell me what that means and if I should install it?Answer: GFCI is an acronym that stands for "ground-fault circuit interrupter." It is an electrical safety device installed on outlets in areas prone to wet or damp conditi...

Synthetic stucco AKA EIFS, which stands for Exterior Insulated Finish Surfaces has been installed in residential applications since the early 1980's here in the United States. Synthetic stucco has been around since after World War II, introduced primarily in Europe to help speed up the process of...

ZINSCO electrical panels/breakers The Zinsco panel has major problems. The blade type bus bars were made using an aluminum alloy and tend to corrode, burn, and deteriorate where the breakers attach with a clip. The breakers fail to lock securely onto the bus bar and this allows the breaker to mov...