How do you estimate roof replacement cost?
Step 1: Size
Get the roof area in squares, 100 square feet each, from a measurement report or by working from the footprint, overhangs and pitch. A two-story home has far less roof than a one-story home of the same living area.
Step 2: Complexity
- Pitch. Steeper roofs have more surface and need slower, harnessed work.
- Stories and access. Height, steep lots and tight driveways add time.
- Shape. Hips, valleys, dormers and turrets add cuts, flashing and waste.
- Penetrations. Chimneys, skylights and many pipes add flashing work.
- Layers. Two layers to tear off cost more than one.
- Decking. Budget a few sheets on most roofs, and much more for old plank decking.
Step 3: Material
Standard architectural shingles anchor the typical range. Impact-resistant or designer lines raise it; metal raises it considerably.
Step 4: Extras
Gutters, new skylights, chimney flashing rebuilds, added ventilation and fascia repair.
Step 5: Place it in a band
A moderately pitched, one-layer roof of around 20 to 25 squares usually sits in the typical band. A sprawling, steep or cut-up roof moves into the large or complex bands.
Step 6: Verify
Get itemized quotes on the same scope, and if hail or wind may be involved, have the roof inspected before assuming you pay the full price. See roof replacement cost in Georgia and how roofers measure a roof.