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TLCIS — Attic Insulation Shield

How to Specify

Using tables from the National Fuel Gas Code or our Sizing & Application Guide, determine the diameter of venting required. The Sizing & Application Guide also offers tips on good design including multi-appliance system sizing and design.

How to Purchase

TLCIS — Attic Insulation Shield

  • The attic insulation shield must be installed where the chimney enters the attic space.
  • Designed to keep insulation away from the chimney and to maintain the mandatory 2-inch clearance to combustibles.
  • Not to be used for enclosed chimneys passing through attic. Instead, use firestop radiation shield and rafter radiation shield.

Attic Insulation Shield dimensions (inches)

Model Number Size(A)(B)(C)
5TLCIS5"117 1/813
6TLCIS6"128 1/814
7TLCIS7"139 1/815
8TLCIS8"1410 1/816
10TLCIS10"1612 1/818
12TLCIS12"1814 1/820
14TLCIS14"2016 1/822

TLCIS — Attic Insulation Shield - dimensional drawing