Thermal Roof Expansion at Penetrations: Modesto Leak Risks
Thermal roof expansion is an overlooked but critical cause of roof leaks—especially at penetrations like vents, pipes, skylights, HVAC curbs, and electrical conduits. In Modesto and across the Central Valley, extreme temperature swings, seasonal winds, and long stretches of dry heat create a perfect environment for movement and material fatigue. When those dynamics meet sensitive detail areas on an aging commercial roof, small gaps can quickly become roof patching Modest