Product Review

It's strongly advised to insulate your stainless steel flexible chimney liner to help increase draft and reduce the amount of creosote buildup. Insulating with our 1/2" thick insulation blanket wrap will meet UL listing 1777 standards in the USA. It will also provide a zero clearance to combustibles. This chimney liner insulation kit will fit chimney liners with a diameter of 3", 4", 5", 5.5", 6", and 6.5". Using the insulation blanket will add about 1.5" to the overall diameter of the liner. The Rock-Flex Chimney Liner Insulation Kit includes everything you will need to complete the job. The kit includes 1/2" x 24" x 25' foil face insulation wrap, stainless steel retractable mesh, 3M Insulation spray adhesive, roll of HVAC foil tape, and 2 clamps to hold mesh in place. As always, if you have any questions please contact us. We are here to help you do it yourself and will support you with your chimney liner installation before and after the sale.