When homeowners and builders compare insulation products, one number dominates the conversation: R-value. It appears on every batt label, every spray foam datasheet, and every energy code requirement. Yet despite its prominence, R-value is widely misunderstood. Knowing what it really measures, where it falls short, and how it behaves in real walls will help you […]
The three most common cavity insulation materials in residential construction are fiberglass, mineral wool, and cellulose. Each has been used for decades, each has loyal advocates, and each performs admirably when installed correctly. The trouble is that marketing tends to flatten the differences, leaving homeowners to choose on price alone. A closer look reveals that […]
Spray polyurethane foam has become one of the most powerful tools in modern building envelopes, prized for its ability to insulate and air-seal in a single application. But spray foam is not a single product. It comes in two fundamentally different forms, closed-cell and open-cell, and treating them as interchangeable leads to expensive mistakes. Understanding […]
There is a persistent belief that the path to a comfortable, efficient home runs entirely through thicker insulation. Homeowners pile more batts into the attic, upgrade to higher R-value products, and still find their houses drafty, their bills stubborn, and certain rooms perpetually uncomfortable. The missing piece is almost always air sealing. Controlling air leakage […]
Insulation keeps heat where you want it, but the moment you create a temperature difference across a wall, you also create the conditions for moisture problems. Water vapor, condensation, and trapped wetness are the silent destroyers of insulated assemblies, rotting framing, corroding fasteners, breeding mold, and quietly ruining the thermal performance you paid for. Designing […]
Retrofitting insulation into an existing home is one of the most rewarding upgrades a homeowner can make, but it is also one of the most fraught. Older houses were not designed around modern building science. They were often built to breathe, leaking air freely and drying readily, and when you wrap that loose construction in […]
For decades, builders treated insulation as something that lived inside wall cavities, tucked between the studs. That approach quietly accepts a major flaw: the studs themselves conduct heat around the insulation. Continuous exterior insulation, usually in the form of rigid foam boards applied over the sheathing, solves this problem by wrapping the entire structure in […]
As the building industry confronts its environmental footprint, insulation is receiving fresh scrutiny. The materials we use to save operational energy carry their own embodied impacts, the emissions and resources consumed to manufacture and transport them. A growing family of sustainable and natural insulation products promises good thermal performance with a lighter environmental burden, often […]
