The average cost to install insulation on a flat roof is around $0.67 per square foot, using 1-inch thick PolyISO with an R-value of six. Expect to pay around a quarter of the price to install a ...

Flat roof repairs cost $700, on average, with high repair costs of about $1,100 and low costs around $300. ... Because there is no wasted space for an attic, more interior room can be used.

Do you have a flat or pitched roof? The type of insulation you should choose will depend on the type of roof you have. Pitched roof – there are two options: warm or cold loft insulation. Flat roof – ...