How do I install a pitch pocket for refrigerant lines penetrating the roof deck

Plain-English answer

Anchor the sheet metal pitch pocket pan securely to the structural roof deck over the pipe penetration hole.

Ensure the copper refrigerant lines and control wires pass through the center of the pocket without touching the metal edges.

Wrap the pipes with protective insulation or tape.

Once the roofer flashes the outside flange, fill the internal cavity of the pan completely with a non-shrinking pourable sealer (pitch-pocket filler) or liquid rubber compound to create a solid, watertight block.

Field checklist

• Anchor the sheet metal pitch pocket pan securely to the structural roof deck over the pipe penetration hole.
• Ensure the copper refrigerant lines and control wires pass through the center of the pocket without touching the metal edges.
• Wrap the pipes with protective insulation or tape.
• Once the roofer flashes the outside flange, fill the internal cavity of the pan completely with a non-shrinking pourable sealer (pitch-pocket filler) or liquid rubber compound to...

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Use this as training guidance. The foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, and AHJ/code requirements always control the final answer.

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