Mold grows everywhere there is moisture, both inside buildings and out door. Exposure to molds for those who are sensitive may start a variety of health effects, including stuffy nose, sore throat, cough, itchy, burning eyes or new boiler installation irritated skin. Those with mold allergies or compromised immune systems risk more severe reactions. The effects of mold on people can vary greatly, so it greatest to remove any variety of mold to avoid possible health perils.