According to the National Fire Protection Association, the interior of the smoke chamber between the firebox and flue must be covered with a special insulating refractory mortar known as a parge coat. The NFPA requires this coating because it makes the smoke chamber structurally safer and more durable:
– The parge coat prevents chimney brick damage from high temperatures.
– The smooth surface over corbelled bricks allows smoke to flow out of the flue faster.
– Faster air flow reduces the buildup of creosote, which makes future cleanings easier.
At Chimney Sweeps of America, we inspect and clean the chimneys of our Denver clients before and after parge installation. We also offer chimney repair services. For more information, contact us today.