Roof Edge & Ventilation Hub
Soffit, Fascia & Roof Edge Calculators
Calculate eave overhang square footage, 12-foot soffit panels, aluminum fascia wrap with splice overlaps, and IRC R806.2 attic ventilation.
Specialized Soffit, Fascia & Vent Calculators
Determine panel yields, F/J channels, aluminum fascia wrap, and IRC R806 attic intake ventilation.
Eave Overhang & Panel Engine
Soffit Calculator
Calculate total eave and rake overhang area, required 12-ft soffit panels, F-channel, J-channel, and trim fasteners.
Method: Overhang Area = (Eave Length × Depth/12) + (Rake Length × Depth/12)
IRC R806.2 Ventilation Engine
Soffit Vent Calculator
Calculate required Net Free Vent Area (NFVA) for attic ventilation using the IRC 1:150 baseline or 1:300 exception, with balanced intake and exhaust sizing.
Method: Total NFVA (sq in) = (Attic Floor Area sq ft ÷ Ratio) × 144
Fascia Board & Wrap Engine
Fascia Calculator
Calculate fascia board linear footage, 10-ft aluminum wrap pieces with 2-inch splice overlap loss, and trim nail fasteners.
Method: Covered Length = n × Length - (n - 1) × Overlap; pieces needed = minimum n to cover Total Perimeter × (1 + Waste%)
Attic Ventilation & Roof Edge Guides
Understand IRC code requirements, 1:300 vs 1:150 balancing, and eave installation techniques.