Cost of Asphalt Shingle Roof Installation in District of Columbia$294.21 per 100 sq.ft. (standard quality, overlay existing roof) (Range: $224.16 - $364.26) Free Estimates from Local ProsCost of Tile Roof Installation in District of Columbia$1,365.98 per 100 sq.ft. (standard quality, no tear off of existing) (Range: $1,050.75 - $1,681.20) Free Estimates from Local ProsCost of Wood Shake Roof Installation in District of Columbia$851.11 per 100 sq.ft. (standard quality, no tear off of existing) (Range: $735.52 - $966.69) Free Estimates from Local ProsCost of Metal Roof Installation in District of Columbia$1,204.86 per 100 sq.ft (standing seam, no tear off of existing roof) (Range: $1,043.75 - $1,365.97) Free Estimates from Local ProsCost of Slate Roof Installation in District of Columbia$1,768.77 per 100 sq.ft. (not including roof tear off) (Range: $1,015.73 - $2,521.80) Free Estimates from Local ProsCost of Flat Roof Installation in District of Columbia$241.68 per 100 sq.ft. (asphalt roll, no existing roof tear off) (Range: $182.13 - $301.22) Free Estimates from Local ProsCost of Roof Inspection in District of Columbia$332.74 per visit (two story home with typical roofline) (Range: $245.18 - $420.30) Free Estimates from Local Pros |