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Step 1
Ensure that the chimney cap is properly attached. Extremely high winds can knock a cap loose or damage the metal. Tighten the anchor screws or reapply sealant for a good fit if it's not securely attached.
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Step 2
Look for rust on the chimney cap. Most lose their effectiveness after 3 to 4 years and need to be replaced because of rust. Chimney caps made of stainless steel or copper are available with a lifetime warranty.
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Step 3
Check the chimney cap for blockages. Clear away any debris that has blown against the mesh. Clogged chimney caps are a fire hazard and lower the efficiency of your fireplace.













