Difference between revisions of "Roof"

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(The Historic Roof)
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== The Historic Roof ==
 
== The Historic Roof ==
  
[[Image:richard the roofer.jpg|thumb|right|300px|Richard --- doing patch repairs to the old roof.]]
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[[Image:tom ike roof inspection.jpg|thumb|right|300px|Tom Brennan and Ike Sheppard at the roof inspection. I LIKE IKE!]]
  
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.
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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, with the added plus of keeping the beautiful existing barrel roof and bow trusses. 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.<br style="clear:both;"/>
  
 
== Roof Design ==
 
== Roof Design ==
  
* Historic side
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=== 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
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* 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
:: Use flat roof reinforced to carry additional weight of PV and solar heating panels
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* Layers detail
:: R-40 for 12" thickness
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** Laminated veneer lumber beams (engineered to span truss to truss)
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*** Blocked down to original truss through the roof
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*** Served 2 purposes:
 +
**** Allowed us to build new roof over existing roof
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**** Gave us opportunity to straighten the roof
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** Completed vapor barrier where none was present
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** Multiple layers of polyiosinsulation (staggered seams)
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** Spray foam the joints (limiting air infiltration)
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** Screw down insulation to old roof deck
 +
** 2 x rafters go up (reused from ceiling that was taken out from our interior)
 +
** More layers of polyiso added where able
 +
** Oriented strand board added with gap for cellulose
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** Cellulose blown in under OSB
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** Deck Armor layer added (breatheable roof deck protection)
 +
** Duro-Last added (white roofing membrane)
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* R = 115
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* ''Can Joe do another drawing of roof cross-section?''
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=== Annex side ===
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* Layers detail
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** Original roof
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** 9" polyisoinsulation with staggered joints
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** Layer of OSB
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** DoroLast
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* R-65
  
 
== Photos ==
 
== Photos ==
  
* [http://www.flickr.com/photos/thegreengarage/sets/72157622634430446/ Roof construction Flickr Set]
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A look into the construction process for the roof....
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<gallery>
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Image:laminated veneer lumber boards up.jpg|Laminated veneer lumber boards going up
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Image:arrival of polyiso.jpg|Arrival of polyisoinsulation in trucks
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Image:out-from-truck.jpg|Polyiso coming out of the truck
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Image:new front fascia.jpg|Building a new front fascia for the roof
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Image:installing moisture barrier on gable.jpg|Installing a moisture barrier on a gable
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Image:laying down roof insulation.jpg|Laying down insulation
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Image:screwing down layer 3.jpg|Screwing down layer 3 of the insulation
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Image:rafters.jpg|Rafters going up
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Image:more polyiso.jpg|More polyiso is added
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Image:oriented strand board with gap.jpg|Oriented strand board is added with a gap for cellulose
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Image:kenny with cellulose.jpg|Kenny blowing cellulose into roof
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Image:deck armor.jpg|Deck armor layer is added
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Image:fastening durolast to roof.jpg|Finally, the Durolast membrane is added.
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</gallery>
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For more images of the roof construction, see our [http://www.flickr.com/photos/thegreengarage/sets/72157622634430446/ Roof construction Flickr Set].
  
 
== Resources ==
 
== Resources ==
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::508.532.1851
 
::508.532.1851
 
* Duralast membrane
 
* Duralast membrane
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**Jeff Gottran
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**[http://www.duro-last.com/ Duro-Last Roofing, Inc.]
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**734-323-8080
 
* Solatubes
 
* Solatubes
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**[http://www.solatube.com/ Solatube]
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**888.765.2882
 
* Walnut-shell blasting
 
* Walnut-shell blasting
* Insulspan SIPS
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**Ron Wells
 
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**[http://www.grandnorthern.com/ Grand Northern Products]
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**9000 Byron Commerce, SW
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**Byron Center, MI 49315
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**Phone: (616) 583-5000
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**Toll Free: (800) 968-1811
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**sales@grandnorthern.com
  
 
== See also ==
 
== See also ==

Latest revision as of 20:27, 24 August 2012

return to As Built

The Historic Roof

Tom Brennan and Ike Sheppard at the roof inspection. I LIKE IKE!


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, with the added plus of keeping the beautiful existing barrel roof and bow trusses. 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.

Roof Design

Historic side

  • 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
  • Layers detail
    • Laminated veneer lumber beams (engineered to span truss to truss)
      • Blocked down to original truss through the roof
      • Served 2 purposes:
        • Allowed us to build new roof over existing roof
        • Gave us opportunity to straighten the roof
    • Completed vapor barrier where none was present
    • Multiple layers of polyiosinsulation (staggered seams)
    • Spray foam the joints (limiting air infiltration)
    • Screw down insulation to old roof deck
    • 2 x rafters go up (reused from ceiling that was taken out from our interior)
    • More layers of polyiso added where able
    • Oriented strand board added with gap for cellulose
    • Cellulose blown in under OSB
    • Deck Armor layer added (breatheable roof deck protection)
    • Duro-Last added (white roofing membrane)
  • R = 115
  • Can Joe do another drawing of roof cross-section?

Annex side

  • Layers detail
    • Original roof
    • 9" polyisoinsulation with staggered joints
    • Layer of OSB
    • DoroLast
  • R-65

Photos

A look into the construction process for the roof....

For more images of the roof construction, see our Roof construction Flickr Set.

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
    • Ron Wells
    • Grand Northern Products
    • 9000 Byron Commerce, SW
    • Byron Center, MI 49315
    • Phone: (616) 583-5000
    • Toll Free: (800) 968-1811
    • sales@grandnorthern.com

See also