Jim, I used fiberfrax overlaided with aluminum sheet for my firewall. The thickness of the fiberfrax is not important. It is still rated for 2300 deg F regardless of thickness.
I have not heard of Isofrax paper. Thanks, Rob Schmitt N1852Z -----Original Message----- From: KRnet <[email protected]> On Behalf Of Jim Litchfield via KRnet Sent: Friday, March 22, 2019 8:27 AM To: [email protected] Cc: Jim Litchfield <[email protected]> Subject: KR> Fiberfrax What thickness of fiberfrax should be used for firewall insulation. While ACS sells 1/16" and 1/8" I have found that it is available in 1/4" and thicker from other sites. Is thicker necessary ? Cost effective ? Also I found a product called Isofrax paper. Anybody used this ? It is made by the same company that makes the fiberfrax. I am waiting for an answer as to thicknesses that are available. Has anyone used other substitute material ? I am open to all suggestions. Thanks Keep building--- Jim Litchfield S,E. Virginia _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/[email protected]/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to [email protected] _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/[email protected]/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to [email protected]

