HOW DO SOLAR PANELS AFFECT ROOF STRENGTH, LOAD CAPACITY, AND LATERAL RESISTANCE?
Installing solar panels adds additional dead load to the roof, which can increase member stresses and deflection, affecting overall roof strength and load capacity. Roof framing and connections must be checked to ensure they can safely support the extra weight.
Solar panel mounts can also influence the roof’s diaphragm action, potentially altering how lateral loads from wind or seismic forces are transferred to walls or bracing. Proper attachment and structural evaluation ensure that the roof remains safe, serviceable, and code-compliant.
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