In this episode, Reuben Saltzman and Tessa Murry are joined by Tom Harris, an expert in spray foam insulation. They discuss the challenges and complexities of spray foam application, the common applications of spray foam, and the training and certification required for spray foam installers. They also explore the qualifications and training of spray foam contractors and the potential mistakes and challenges that can arise during installation. Tom Harris discusses the differences between open-cell and closed-cell foam insulation in this conversation. He explains that closed-cell foam is solid and rigid, while open-cell foam is fluffy and can be easily compressed. Tom emphasizes the importance of surface preparation and proper installation to ensure the foam adheres correctly. He also highlights the significance of measuring foam thickness to meet code requirements. Additionally, Tom addresses the confusion between open-cell and closed-cell foam in terms of vapor permeability and the need for additional vapor protection. The conversation concludes with plans for a future discussion on spray foam insulation.

Takeaways

Spray foam insulation is a versatile and effective insulation material used in various applications, including walls, attics, and foundations.
Spray foam installers should undergo training and certification from organizations like the Spray Polyurethane Foam Alliance (SPFA) and manufacturers of the equipment and chemicals used.
While there is no formal licensing requirement for spray foam installation, contractors need to have the necessary knowledge and experience to ensure proper installation.
Mistakes in spray foam installation can lead to insulation deficiencies, reduced energy efficiency, and potential health and safety hazards. Closed-cell foam is solid and rigid, while open-cell foam is fluffy and can be easily compressed.
Proper surface preparation and installation are crucial for foam adhesion.
Measuring foam thickness is important to meet code requirements.
There is a difference between open-cell and closed-cell foam in terms of vapor permeability and the need for additional vapor protection.

Chapters

00:00 Introduction and Scheduling Challenges
00:46 Introducing Tom Harris
06:00 Introduction to Spray Foam Insulation
11:30 Challenges and Complexity of Spray Foam Application
14:08 Common Applications of Spray Foam
24:00 Qualifications and Training of Spray Foam Contractors
25:10 Training and Experience of Spray Foam Assistants
26:28 Mistakes and Challenges in Spray Foam Installation
27:15 Differentiating Open-Cell and Closed-Cell Foam
30:12 Surface Preparation and Installation
33:07 Moisture Content and Vapor Protection
36:15 Differences Between Open Cell and Closed Cell Foam
40:08 Chemical Makeup of Open-Cell and Closed-Cell Foam
42:09 Proper Application and Mixing
44:27 Indications of Improper Foam Installation
46:16 Importance of Measuring Foam Thickness
48:37 Conclusion and Future Discussion