Home Improvement Cost Estimates The following costs are intended as estimates for repairs and improvements to a typical urban home. The costs are based on information obtained in the east-central area of Ontario. Actual contractor quotations may vary by as much as 300%. It is advisable to obtain estimates from at least three contractors.
Please select a category from the list below to view the details.
Roofing/Flashings/Chimneys Install conventional asphalt shingles over existing shingles $1.50-$2.50 per sq. ft. Strip and re-roof with conventional asphalt shingles $2.50-$3.50 per sq. ft. Strip and re-roof with top-quality asphalt shingles $3.00-$4.00 per sq. ft. Strip and re-roof with low-slope asphalt shingles $3.00-$4.00 per sq. ft. Strip and re-roof with cedar shingles $7.00-$10.00 per sq. ft. Strip and re-roof with cedar shakes $8.00-$12.00 per sq. ft. Strip and re-roof with steel shingles $5.00-$6.00 per sq. ft. Strip and re-roof with aluminium shingles $4.50-$6.25 per sq. ft. Strip and re-roof with plastic shakes $4.50-$6.25 per sq. ft. Install concrete tile roofing (assuming no structural reinforcement) $5.00-$7.00 per sq. ft. Steel sheet roofing $5.00-$7.00 and up per sq. ft. Install new slate roof $10.00-$20.00 per sq. ft. Repair loose slates or tiles $30.00 per slate/tiles Install asphalt roll roofing $1.10-$2.20 per sq. ft. Strip and replace built-up tar and gravel roof $8.00-$12.00 per sq. ft. (min. $1000) Strip and install modified bitumen roof membrane $8.00-$12.00 per sq. ft. (min. $1000) Synthetic rubber membrane $10.00-$15.00 per sq. ft. Improve flat roof drainage prior to installation of new membrane $2.00-$3.00 per sq. ft. Paint modified bitumen membrane $0.25-$0.50 per sq. ft. (min. $200) Install sheet metal on small roof surfaces $8.00-$20.00 per sq. ft. (min. $500) Re-flash typical skylight or chimney on asphalt roof $300.00-$500.00 Re-flash skylight or chimney on built-up or bitumen roof $400.00-$700.00 Install metal cricket for wide chimney $300.00-$500.00 Repair valley flashings on existing roof $20.00-$30.00 per lin. ft. (min. $300) Replace parapet wall flashing $20.00-$30.00 per lin. ft. (min. $300) Rebuild typical single-flue chimney above roof line $150.00-$300.00 per lin.ft. (min. $500) Rebuild typical double-flue chimney above roof line $200.00-$400.00 per lin.ft. (min. $500) Repoint typical single-flue chimney above roof line $20.00-$30.00 per row (min. $250) Repoint typical double-flue chimney above roof line $25.00-$40.00 per row (min. $250) Install concrete cap on typical single-flue chimney $150.00-$300.00 Install concrete cap on typical double-flue chimney $200.00-$400.00 Install rain cap on typical chimney $50.00-$100.00 each Replace roof sheathing (plywood or waferboard) $1.50-$2.00 per sq. ft.
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