Insulation & air sealing
Attic Insulation Guide: How Much R-Value You Need and What It Costs
How much attic insulation you need by climate zone, how to check what you have, which material to choose, DIY vs pro, and why to air seal first.
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Insulation & air sealing
Sealing leaks and topping up insulation are usually the cheapest way to cut heating and cooling costs, and they make any new heating system work better. Start with air sealing, then insulation, then equipment.
Start withAir Sealing Your Home: Find Leaks, Seal Them and Stay SafeAir sealing means closing the gaps that let outside air into your home and conditioned air out. The biggest leaks are usually hidden in the attic and basement, not just around windows and doors. Use caulk for gaps up to 1/4 inch, spray foam for larger ones, and weatherstripping on anything that moves. Have gas appliances safety-tested afterward.
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