We recommend reviewing National Electrical Code (NEC) guideless for proper installation. NEC 410.116 Section B outlines the minimum requirements for how far insulation must be from a non-IC product.
NEC 410.116 Clearance and Installation
(A) Clearance From Combustible Material
(1) Non-Type IC
A recessed luminaire that is not identified for contact with insulation shall have all recessed parts spaced not less than 13 mm (1/2 in.) from combustible materials. The points of support and the trim finishing off the openings in the ceiling, wall, or other finished surface shall be permitted to be in contact with combustible materials.
(2) Type IC
A recessed luminaire that is identified for contact with insulation, Type IC, shall be permitted to be in contact with combustible materials at recessed parts, points of support, and portions passing through or finishing off the opening in the building structure.
(B) Clearance From Thermal Insulation
Thermal insulation shall not be installed above a recessed luminaire or within 75 mm (3 in.) of the recessed luminaire's enclosure, wiring compartment, ballast, transformer, LED driver, or power supply unless the luminaire is identified as Type IC for insulation contact.
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