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601 South Palm Avenue, 91803 Alhambra US

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Project Description

The existing roof of the commercial warehouse is a multi-ply, built-up roofing (BUR) with a granular-surfaced cap sheet. However, the existing BUR has been losing its reflective granules, and the waterproofing asphalt has deteriorated. Additionally, the flashings and air conditioning curbs have developed cracks, which could lead to water infiltration into the building. Over time, the building occupants have been experiencing more and more leaks, to the point that it has become difficult to patch them reactively. The leaks have started to damage the occupants’ personal equipment and warehouse inventory.

Project Details

Van Burland
Moreno Valley, CA
10,000 Square Feet
March 2020


The tenant regularly imported and exported goods. It was crucial that the roofing project be seamless to allow the tenant to continue operating without any disruptions. The project involved installing an acrylic roofing system which didn’t require any extensive tear-off. This was important to avoid any impact on the tenant’s regular operation. An acrylic roofing system is a fluid-applied system that covers the existing roof system and provides waterproofing to the building.

  • Western Colloid’s Fluid Applied roofing system can be applied directly to the existing BUR surface
  • Eliminating the troubles and potential operational impacts of a conventional tear-off and reroof.


The building owners approached HP Roofing Pro for their expert knowledge in the roofing industry and their unique expertise in sustainable roofing. They received quotes from other roofing contractors for an extensive tear-off and reroof that would have been 2-3 times more expensive than what HP Roofing Pro quoted them. The tear-off application would also have disrupted the building tenant’s business operations. The main issue with the roof was that the waterproofing was no longer functional. HP Roofing Pro suggested installing an acrylic-coated roofing system over the existing roof membrane. Acrylic roofing systems are robust and versatile, and they primarily function by adding a waterproofing layer over the existing roof membrane. Additionally, these systems come in white and other light colors, which makes them highly reflective to the sun’s UV rays and reduces heat transfer into the building. As a result, less energy is needed to cool the interior space on warm days, which ultimately saves the business owner money on energy consumption.


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