Flat and low-slope roofs
EPDM and TPO membranes for porches, garages, additions and the rear roofs on Twin Cities duplexes.
Typical price
$11 to $15 per sq ft
Time on site
1 to 2 days
Where we use it
Any roof with less than 2 inches of slope per foot needs a membrane, not shingles. In the Twin Cities that’s usually a back porch, a garage, a rear addition or the back half of a duplex.
We install fully adhered EPDM rubber or TPO, over new insulation board where the old roof has soaked up water. The membrane turns up walls and parapets under a metal termination bar, and new metal edge and scuppers go in at the drains.
Pricing
Most porch and garage roofs cost $11 to $15 a square foot, including tear-off. A 340 sq ft rear duplex roof is about $4,600.
