#687: Flat roofs, Spray Foam vs. Loose-Fill Insulation, and Building Cabinets

Stay informed about material price volatility and supply chain issues by tracking shipping and communicating proactively with clients, potentially implementing price escalation clauses or pre-purchasing materials.

For flat roof conversions into usable deck or garden spaces, consult with a specialized contractor to ensure proper structural support, load distribution, and appropriate roofing membranes (e.g., EPDM, fluid-applied systems) to prevent leaks and ensure longevity.

Avoid using closed-cell spray foam under a vented roof deck; it serves no purpose in a vented assembly and is a waste of resources. Opt for properly baffled and insulated systems like cellulose for optimal performance in such scenarios.

For wall insulation, understand the building science behind different systems. In new construction with robust air barriers like Zip System, spray foam for air sealing may be redundant and less cost-effective than other insulation options like mineral wool or fiberglass.

When considering custom cabinetry, evaluate if you have the necessary shop setup and woodworking skills for efficient production. While boxes are relatively easy, specialized components like doors and drawer boxes can often be more cost-effectively outsourced to specialty contractors or suppliers.

Finishing is a critical and often challenging aspect of custom cabinetry; consider the complexity of desired finishes (e.g., 2K, conversion varnishes) and whether you have the expertise and equipment, or if outsourcing to a professional finisher is a better option.

Utilize local plywood suppliers for cabinet-grade materials to save money and ensure quality, and consider local lumber mills for pre-milled stock to simplify your process, especially when on a time crunch.