Should Metal Roofs Be Grounded

If you plan on using metal roofing one thing you may consider is whether you need to ground that roofing as you do in other electrical or metal applications in construction.

Should metal roofs be grounded.

Some actual disadvantages to metal roofs. From professor gene wengert forum technical advisor. Since a metal roof provides the same path as a standard roof on the same structure it won t pose a. Fear of lightning strikes may be an imaginary problem but there are a few genuine disadvantages to metal roofs.

A metal roof in no way makes your home more vulnerable or susceptible to lightning strikes. A grounded building will apparently form a faraday shield and that will keep the lightning on the outside rather than letting it go on the inside. Plus metal s inflammable nature means your home will be even more safe should the rare chance of a lightning strike actually take place. The grounding of a metal building is for keeping it at the same potential as ground in case of electrical problems or failures.

For instance building codes require the pipes that extend from your home s interior to the roof to be made from polyvinyl chloride pvc. Though metal roofs are good at guarding against a fire that approaches from outside a house such as from flying sparks and embers they are not ideal for fires that start inside a house. Lightning will strike an item or material that gives the least resistance as a path to the ground. With a serious house fire firemen may need to cut through.

Metal roofing is extremely popular in all areas of construction from entire housing implementation to self built sheds in the backyard. The truth is metal roofs don t attract lightning. Metal roofs are resistant to wind and hail weigh less than asphalt shingles require little maintenance and are energy efficient. Your metal roof is not grounded and thus lighting has no reason to strike it.

The concern about metal roofs attracting lightning strikes is most likely associated with the fact that metal can be an electrical conductor. Protect your building from lightning strikes with a metal roof. In the unlikely event that your metal roof is struck by lightning the structure will direct the electric current to the ground provided that your home is up to code.