Metal Building Interior and Garage Siding Upgrade

@lorenzol48

Hello, no problem. I am a structural designer and building envelope specialist with extensive experience in retrofitting metal buildings with interior framing and exterior wood siding for aesthetic and functional upgrades. I will create detailed, comprehensive plans for both tasks, specifying all materials, attachment methods, and spacing. **For the interior 2x4 pressure-treated lumber (24" O.C.):** The plans will detail using **#10 x 3" self-tapping metal screws** (with drill point) to attach the lumber directly to the metal building's girts, with washers to prevent pull-through. The 24" on-center spacing will be clearly dimensioned, and the plans will include notes on leveling shims and ensuring the lumber is straight before fastening. **For the exterior T111 plywood siding (horizontal installation):** The plans will show the attachment over a weather-resistant barrier (house wrap) and furring strips (if needed for drainage). The T111 will be fastened using **#8 x 2-1/2" corrosion-resistant wood screws** (or ring-shank nails as an option) into the underlying metal framing, with specified spacing (e.g., 6" at edges, 12" in field). The plans will include details for corner trim, flashing around openings, and proper overlapping of panels. All deliverables will be provided in PDF and, if needed, CAD format. I am ready to begin as soon as you provide the building dimensions and any specific design preferences. Sincerely, Lorenzo