Roof
return to As Built
The Historic Roof
Before purchasing the building we had it inspected by a structural engineer named Ike Sheppard. Ike determined that although the overall structure was sound, the roof would need to be replaced. We decided that instead of replacing the roof, we would keep the existing roof intact and build a new roof over it. This way, we could save all of that material from ending up in a landfill. We bought the building in December of 2007 and knew it would be a couple of years before we could put on the new roof, so we made some repairs to the old roof so the building would stay secure and dry.
- inspection by Ike Sheppard - determination on viability - decision to build over current roof - why.
- initial repairs - flickr roof repair photos
- cleaning ceiling with walnut blasting
Roof Design
- Historic side
The strategy in the roof design entails keeping the historic roof intact and placing the new, super insulated roof on top of it. This keeps materials from the old roof from entering the waste stream and preserves the historic appearance of the interior. The bow trusses used to support the historic structure have been evaluated by a local structural engineer. The trusses are capable of handling an additional 15 psf over the entire roof area. Structural Insulated Panels (SIPS) are being used because they are a lightweight, high R-value material that fit the barrel vault shape of the historic roof.
- Modeled roof system with WUFI software to determine how best to achieve high R-value and also deal with moisture within our super insulated roof assembly design
- Cover historic roof with Insulspan structural insulated panels (SIPS)
- R-50 for 12" SIP
- Weight: 4 psf
- Local supplier (Blissfield, MI)
- Cover SIPS with outer layer of Dura-last TPO
- White, reflective surface minimizes radiation
- Won't contribute to heat gain in building or urban heat island effect
- Local supplier (Saginaw, MI)
- Annex side
- Use flat roof reinforced to carry additional weight of PV and solar heating panels
- R-40 for 12" thickness
Photos
Resources
- Insulation specialist
- Byczynski, Ken (Building Science Consultant)
- Kenco Energy Services
- kensr.kenco@gmail.com
- 248-895-8161 - Mobile
- 7273 Tucker Road
- Holly, MI 48442
- Insulation Supplier
- David Volpe
- Insulation Depot/ (Used rigid insulation supplier)
- 508.532.1851
- Duralast membrane
- Solatubes
- Walnut-shell blasting
- Insulspan SIPS
