Full Re-Decking Preps Roof for Spray Foam Insulation — Londonderry, NH

Project Overview

This roof replacement in Londonderry, NH was a little more involved than most—but it’s a great example of doing things the right way from the start. The homeowner planned to spray foam the underside of the roof deck, which meant the existing decking had to be completely removed to allow proper application. Once we opened everything up, we prepped the structure and got it ready for a clean, high-performance install.

What We Did Full tear-off down to the framing Installed brand new roof decking after spray foam prep Shingled with Owens Corning TruDefinition® Duration® Designer shingles in Black Sable Added metal accents on the dormers for a clean, high-end finish Installed proper underlayment and waterproofing throughout The End Result A fully rebuilt roofing system that’s: Tight, efficient, and ready for spray foam insulation Built to handle New Hampshire weather Finished with a sharp architectural look thanks to the Black Sable shingles and metal details Why This Matters For homes in Londonderry, NH, projects like this show that roofing isn’t always just a shingle swap. When insulation, ventilation, or structural components come into play, the install needs to be done with a full-system approach—or problems show up later. If you’re planning a roof replacement in Londonderry, NH, especially with upgrades like spray foam or design accents, it pays to have a contractor who understands how all the pieces work together.

Rebuilding the deck to prepare for spray foam insulation is a specialized step within our roofing work across Londonderry that goes well beyond a standard reshingle job.