Learn how heat moves through a home and the materials that can stop it, to make sure your insulation is as effective as you think

Insulation offers one of the best paybacks on your investment in your house. Here are some types to discuss with your contractor

Learn what exactly spray foam is, the pros and cons of using it and why you shouldn’t mess around with installation

Stay comfy during unpredictable weather — and prevent unexpected bills — by efficiently insulating and shading your home

Learn about the pros and cons of healthier alternatives to fiberglass and foam, and when to consider an insulation switch

Consider sheep’s wool, denim, cork, cellulose and more for an ecofriendly insulation choice

Block drafts to boost both warmth and energy savings with these inexpensive but effective insulating strategies

Get peace and quiet inside and energy efficiency all around with this heavy-duty alternative to wood-frame construction

A charming but poorly insulated 1880s Philadelphia commercial building becomes a spacious energy-efficient home and studio

Renovation creates a formal yet functional and relaxed hub for entertaining — and takes care of the insulation problem