Inspect your cabin’s chimney top before winter arrives to determine if you need a single-flue cap, multi-flue cap, or top-mount damper based on your chimney’s configuration. Most Chesterfield cabin owners can install basic stainless steel caps themselves using a drill, screwdriver, and measuring tape, though complex installations warrant calling Mason Chimney Repair or another qualified professional. Measure your flue’s exterior dimensions twice, purchase a cap rated for New Hampshire’s freeze-thaw cycles, and secure it with the included hardware while checking that mesh screening has no gaps larger than five-eighths inch to block raccoons and squirrels….

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