1. SWEEP AWAY LOOSE AGGREGATE, IF AGGREGATE EXISTS.

2. CONSULT MANUFACTURER OF EXISTING OR NEW ROOFING SYSTEM AS TO THE TYPE OF WALKPADS REQUIRED FOR THEIR ROOFING SYSTEM. ROOF WALKPADS SUPPLIED BY PHP, FIELD INSTALLED.

3.AFTER PADS ARE INSTALLED (DIMPLE SIDE UP) , PLACE SUPPORTS ON PADS. SWEEP LOOSE AGGREGATE BACK.

4. PLACE PRE-ASSEMBLED PHP SUBSTRUCTURE FRAMES INTO BASES.