By Daisy • 2026-05-10
TL;DR: Consistent 100°F+ ambient temperatures in Riverside County translate to 150°F+ surface temperatures on your roof. This intense heat causes rapid thermal degradation of standard roofing felt, causing it to dry out, crack, and fail long before the actual shingles or tiles degrade.
Thermal Cycling Explained
During a July day in Menifee or Corona, the sun beats down relentlessly, expanding the roofing materials. As the sun sets, the temperature drops rapidly, causing contraction. This continuous expansion and contraction—thermal cycling—is exceptionally hard on the waterproofing layers beneath your tiles or shingles.
Upgrading to Synthetic
This is why Bugarin Roofing does not rely on cheap, builder-grade felt. We upgrade our complete roofing systems with premium synthetic underlayment designed specifically to withstand high-heat environments without breaking down or losing its elasticity.
Bugarin Roofing & Waterproofing LLC is a licensed roofing contractor serving the Inland Empire. Contact us for precise diagnostics and engineered solutions.