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Las Palmas Apartment Homes - Covina, CA

Project Description:
TPO Roof Installation

Area: (95,075 sq.ft.)

Surface Preparation:

  • Furnished and installed proper safety equipment.
  • Prepared blisters, ridges, and other field imperfections as required for the proper application of the new roof system.
  • Inspected the plywood deck.
  • Removed existing coping and stored for re-installation.
  • The existing counter-flashing metal was replaced where it was applicable.
  • Provided the necessary slip sheet/protective mat to the prepared substrate.

System Application:

  • Furnished and installed a 60 mil reinforced TPO roof membrane.
  • Positioned the TPO membrane over the prepared substrate and allowed the membrane sufficient time to “relax” prior to installation.
  • Installed the new TPO membrane over the prepared surface by utilizing mechanical fasteners on 10 foot centers.
  • Mechanical attachment of the membrane was done utilizing approved plates and fasteners.
  • Maximum fastener spacing is 6″ on center.
  • The thermoplastic membrane seams are overlapped a minimum of 5″, then hot air welded together.
  • Weld with is 1.5″ width minimum for automatic machine welding.
  • Weld width is 2″ in width for hand welding.
  • After completion of welding, each seam was probed to ensure proper securement.
  • Furnished and installed at the base of the unit 2 3/8″ round seam plates to the field membrane. Adhered a second piece of thermoplastic membrane to the curb with bonding adhesive and installed prefabricated universal corners for reinforcement.
  • Furnished and installed a 30″ wide TPO protective mat at rooftop access points.
  • Furnished and installed a 60 mil., non-reinforced thermoplastic flashing, where it was applicable.

Parapet Wall Detail:

  • Furnished and installed 2 3/8″ round seam plates or 1″ wide polymer batten strip to the field sheet at the base of the wall. A second piece of membrane was adhered to the wall, welded to the field sheet and terminated with an aluminum bar.
  • Pipe are less than 6″ in diameter.
  • Furnished and installed new prefabricated thermoplastic pipe boot secured at the top with a stainless steel screw type clamp fully adhered to the field sheet.
  • Stacks greater than 6″ in diameter.
  • Furnished and installed a 60 mil., non-reinforced thermoplastic flashing, where it was applicable.

Warranty:

Provided customer with a 20 year labor and material full system warranty.

 

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