How much does insurance go up after new roof?

These 4 upgrades can lower the cost of your homeowners insurance

Roof discounts may range from 5% to 35%. The average roof costs $7,484 — your discount would save you between $54 and $380 annually, which means it would take between 20 and, well, a lot of years to pay back.Sep 18, 2018

Do I need underlay for shed roof?

Easy Fit Low Cost DIY Shed Roof - 30 Year Life - Fix My Roof

Ardmore, Ada and Madill Green Roofs
A simple garden shed will not require any venting or underlay layers flat roofs require, and the Torch on cap sheet is usually sold in either 8 metre or 10 metre roll lengths, with the width being a standard 1 metre.