The chimney needs at least 2" of air space clearance all the way around and the chimney pipe itself must stick above the chase top a minimum of 6". If using a flat roof flashing from Selkirk, the roof flashing will be ventilated. If fabricating a custom chase top, you must be sure it is ventilated (See the document "Chase Top Shroud" on the www.selkirkcorp.com website for details.) so hot air has a way to escape. The chimney should be supported and stabilized inside the chase. Besides that, the chase can be made of basically any material that is structurally sound and appropriate for the environment using standard building practices. Many people build a box out of standard 2x4's. Some insulate it, some do not. Some cover it with siding to match their homes while others cover it with brick or stone to better give the appearance of a masonry style chimney.
Please note: This information is provided for installation within the United States. For further details on installations in Canada, contact our Canadian Technical Support person at 905-661-6606.
Date de publication: 2018-06-12