Pryzl1 Report post Posted November 3, 2011 Looking for product recommendations to line my Onan generator compartment on a '76 GMC motorhome. Goal is to improve insulation and reduce noise level in the coach. Several foil laminated Styrofoam or urethane products are available at Lowe's, Home Depot and Menards but not sure they withstand heat levels in the compartment. Would appreciate comments and thoughts on this subject. Share this post Link to post Share on other sites
hermanmullins Report post Posted November 3, 2011 Pryzl1, Welcome to the Forum. Before you add extra insulation check with Onan for the recommended air space around the generator. It needs a certain amount of space for cooling and air circulation. Share this post Link to post Share on other sites
mustang36 Report post Posted November 4, 2011 Hi, you might try this site. I recently insulated the doghouse in our '87 Southwind with their Double foil faced insulation,which is about a 1/2" thick,It seems to be quite a bit quieter. They also have the correct adhesives..........They are located in Tukwilla Washington and Portland Ore. www.perfectfit.com They are a wholesale auto upholstery supplier.........................Good luck, Jerry Share this post Link to post Share on other sites
chucknewman Report post Posted November 10, 2011 Go to: http://www.wricointernational.com/generator_bay/sound_vibration_reduction.html I've seen this material in action inside a diesel generator "sound box" on bus conversions. You can stand next to a running generator and have a normal conversation. My Onan hangs in the open under the floor and this material greatly reduced the noise inside the bedroom. Of course it didn't do anything for the noise outside. Chuck Share this post Link to post Share on other sites
