Bridge to Better Building
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- Johnathan Cunningham
- 5 years ago
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Transcription
1 Bridge to Better Building
2 Solutions from the INSIDE out
3 1. Understand proper applications for spray foam and eliminate the myths of historical improper use. 2. Participants will be able to calculate the correct thickness and application of spray foam in their climate zone. 3. Identify unique situations where spray foam can be utilized to accomplish difficult insulation and air sealing strategies
4 OCSPF Open cell spray polyurethane foam ½# per cubic foot CCSPF Closed cell spray polyurethane foam 2# s per cubic foot
5 Chemical make up Blowing agents Health considerations Open cell Closed cell
6 Chemical make up Blowing agents Health considerations Open cell Closed cell
7 Chemical make up Blowing agents Health considerations Open cell Closed cell
8 Chemical make up Blowing agents Health considerations Open cell Closed cell What about the occupants? focusonthefamily.com
9 Chemical make up Blowing agents Health considerations Open cell Closed cell
10 Chemical make up Blowing agents Health considerations Open cell Closed cell
11 Chemical make up Blowing agents Health considerations Open cell Closed cell
12 Perfect air seal tool Can burst into flames Promotes mold growth Rots roofs Smells bad Deteriorates over time
13 Perfect air seal tool Can burst into flames Promotes mold growth Rots roofs Smells bad Deteriorates over time
14 Perfect air seal tool Can burst into flames Promotes mold growth Rots roofs Smells bad Deteriorates over time
15 Perfect air seal tool Can burst into flames Promotes mold growth Rots roofs Smells bad Deteriorates over time
16 Perfect air seal tool Can burst into flames Promotes mold growth Rots roofs Smells bad Deteriorates over time
17 Perfect air seal tool Can burst into flames Promotes mold growth Rots roofs Smells bad Deteriorates over time
18 Areas to use spray foam Climate zones Building assemblies Inside outside Conditioned attics Crawl space
19 Areas to use spray foam Climate zones Building assemblies Inside outside Conditioned attics Crawl space
20 Areas to use spray foam Climate zones Building assemblies Inside, outside Conditioned attics Crawl space
21 Areas to use spray foam Climate zones Building assemblies Inside, outside Conditioned attics Crawl space
22 Areas to use spray foam Climate zones Building assemblies Inside, outside Conditioned attics Crawl space
23 Areas to use spray foam Climate zones Building assemblies Inside, outside Conditioned attics Crawl space
24 Open vs closed Minimum depth Hybrids Moisture movement Air barrier requirements Lumber moisture content Applicator error
25 Open vs closed Minimum depth Hybrids Moisture movement Air barrier requirements Lumber moisture content Applicator error
26 Open vs closed Minimum depth Hybrids Moisture movement Air barrier requirements Lumber moisture content Applicator error
27 Open vs closed Minimum depth Hybrids Moisture movement Air barrier requirements Lumber moisture content Applicator error
28 Open vs closed Minimum depth Hybrids Moisture movement Air barrier requirements Lumber moisture content Applicator error
29 Open vs closed Minimum depth Hybrids Moisture movement Air barrier requirements Lumber moisture content Applicator error
30 Open vs closed Minimum depth Hybrids Moisture movement Air barrier requirements Lumber moisture content Applicator error
31 Climate zone 4 Climate zone 5 Others zones
32 Characteristics Air sealing Vapor retarder Good to great R value Complete coverage No convective properties Quiet Structural rigidity
33 Design example Unventilated roof assembly 2 CCSPF 2# R6.8/in =R14 8 BIBs R4.18/in =R34 Total R47 Hybrid wall 2 closed cell against sheathing =R14 3 ½ BIB s dense packed FG =R15 Total R29 Hybrid floor 2 CCSPF against subfloor =R14 8 batt insulation = R25 Total of R39
34 Design example Unventilated roof assembly 12 OCSPF 1/2# R3.8/in =R45 Thermal break on rafter edge Total R45+ Wall 3.5 closed cell against sheathing =R25 Foam creates on air barrier, leave air space Total R25 Dry crawl floor 10 OCSPF against subfloor =R37 Thermal break on joist edge Total of R37+
35 Climate zone 4 Climate zone 5 Others zones
36 Spray foam is an excellent tool Myths should not detract from great solutions Installer must be properly trained in application and safety Design must be calculated correctly for specific climate zone