I Still Remember the Itch: Installing Fiberglass Insulation the Hard Way

Fiberglass insulation batt being installed between wooden wall studs in a home construction project

What You Need to Know About Fiberglass Insulation TL;DR: Fiberglass insulation is a lightweight, fire-resistant material made from spun glass fibers. It works by trapping air in millions of tiny pockets, slowing heat transfer. Standard R-value s range from R-2.9 to R-4.3 per inch, and installed costs average $0.50–$1.50 per sq ft. It is most c

I Paid $900 for a DIY Spray Foam Kit and Ended Up Hiring a Pro to Fix It

Spray foam insulation being applied to a wall cavity expanding to fill gaps and seal air leaks

Defining Spray Foam Insulation: What Homeowners Need to Know TL;DR: Spray foam insulation is a high-performance insulation material sprayed on-site that expands to seal gaps and provide superior thermal resistance. It offers R-value s of R-6 to R-7 per inch (closed-cell) or R-3.5 to R-4 per inch (open-cell), blocks air and moisture, and can re

I Chased R-Values for Three Renovations Before Learning the One Number That Actually Matters

Fiberglass insulation batt with R-value label installed between wall studs in a home

R-Value Explained Simply: What It Is and Why It Matters TL;DR: R-value measures how well insulation resists heat flow. The higher the R-value, the better the insulation. In home improvement, R-value determines how much energy your home saves on heating and cooling, and the right R-value depends on your climate, where you’re insulating, and loca