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Case Study: Edminster-Bohner Residence (Renovation)

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Case Study: Edminster-Bohner Residence (Renovation) * Pacifica ... Pacifica - 1 mile from coast SFD with home office SFD with home office (cont d) ... – PowerPoint PPT presentation

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Title: Case Study: Edminster-Bohner Residence (Renovation)


1
Case Study Edminster-Bohner Residence
(Renovation)
2
Pacifica - lt 1 mile from coast
  • 30 inches of rain annually, all from November
    thru March
  • 2860 HDD, spread evenly over the same period
  • Winds from the west, but sheltered site

3
SFD with home office
  • 50 years old, with recent second story addition
  • 2 by 4 wood-frame
  • Cathedral throughout
  • Attached garage
  • Terraced lot in steep, well-drained slope

4
SFD with home office (contd)
  • Vented, unconditioned tight attics
  • Vented, unconditioned crawl
  • Forced hot air heat, no active cooling
  • Single-pane metal windows
  • Asphalt shingle roof

5
Crawl Details
  • Wood-framed stem wall below-grade)
  • FA heating ducts metal, uninsulated

6
Crawl Details
  • Wood-framed stem wall below-grade)
  • FA heating ducts metal, uninsulated
  • Exterior grade gypsum wall sheathing

7
Crawl Details
  • Wood-framed stem wall below-grade)
  • FA heating ducts metal, uninsulated
  • Exterior grade gypsum wall sheathing
  • All wood in direct contact with concrete (walls
    and piers)

8
Crawl Details
  • Wood-framed stem wall below-grade)
  • FA heating ducts metal, uninsulated
  • Exterior grade gypsum wall sheathing
  • All wood in direct contact with concrete (walls
    and piers)
  • High wood MC, but not universally
  • NO wood rot or surface mold (save on gypsum)

9
Crawlspace Performance Profile
  • Things are getting wet
  • Wood wall
  • Uncovered bare soil
  • Things are drying
  • 6-month split
  • Energy hog ducts
  • Vents?
  • There is some kind of balance (for 50 years) but
    what about changes?

10
Retrofit High Performance Details
11
Retrofit High Performance Details
12
Retrofit High Performance Details
13
Retrofit High Performance Details
14
Retrofit High Performance Details
15
Retrofit High Performance Details
16
After Details
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