This is a great time of year to see whether you could lower your heating bills by adding insulation. If you can see the pattern of your roof rafters in the snow on your roof, or if you have a lot of icicles, chances are you would benefit from having more insulation in your attic. Both are signs that heat escaping through your roof is melting the snow. Current code calls for at least 12” of cellulose or fiberglass insulation. If you add more insulation, remember to check for air leaks first!