There are two types of solar cells are currently available for installation on roofs. Generation, or photovoltaic, solar cells generate electricity for home electrical needs. Conservation solar panels are used to heat water without the need for electricity or gas. The water heated by conservation solar panels is often used inside the house or for swimming pools.
Solar Panels Installation Considerations
Solar panels are usually mounted on racks attached to the roof deck with non-penetration system like, SnapNRack, but most mounting systems require roof penetration.
Here is the lists of important considerations that contractors need to be aware of when installing solar panels on roofs, especially when with penetration systems:
Contractors also should consult local building codes before any solar panels are installed. For example, some codes prohibit solar panel installation on any street-facing roof plane to avoid negative effects on the home’s curb appeal. Other codes are very specific on roof deck reinforcements beneath the solar panel site.
Finally, some experts express concern about roof damage from heat buildup underneath the solar panels. Also, homeowners should contact a roofer to periodically check for debris so airflow is maintained.
As long as there is a gap between the panels and the shingles, the roof should be fine. The shade produced by the panels, coupled with the free-flowing air, can keep the covered shingles cooler than the ones exposed to direct sunlight. Wire mesh can be installed to protect the gap, but it can also restrict airflow and cause heat buildup.