For higher R-value and to minimize thermal bridging, open-cell spray foam between studs is better than closed-cell spray foam.
Buyer's Guide to Insulation: Spray Foam - Fine Homebuilding
Spray Foam Insulation St. Louis County, MO by gonzinsulationmissouri - Issuu
Fall Checklist: DIY Spray Foam Insulation with Dow Froth-Pak!
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Closed-Cell Foam between Studs Is a Waste - Fine Homebuilding
Adding Spray Foam Between Wall Studs With Different Depths - GreenBuildingAdvisor
Installing Closed-Cell Spray Foam Between Studs is a Waste - GreenBuildingAdvisor
Installing Closed-Cell Spray Foam Between Studs is a Waste - GreenBuildingAdvisor
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4 Pitfalls of Spray Foam Insulation - Energy Vanguard