Rooftop Waterproofing
Project Description
On October 2019, our company was awarded for the project of “Re-roofing by Polyurea Waterproofing System to the Main Roof of Shing Keung House in Kwai Shing East Estate” from Hong Kong Housing Authority.
The works herein specified to carry out the re-roofing works for the main roof of Shing Keung House in Kwai Shing East Estate
The waterproofing works were approx. 1100 m² to the main roof and the works was started on October 2019 and completed on January 2020.
The works to be included removal of the existing defective floor tiles, make good the substrate, applying new PWS system (Polyurea Waterproofing System) and apply UV resistant top coat. We provided 5 years warranty for the waterproofing works in this project.
Existing condition
Existing condition
Existing condition
Existing condition
Existing condition
Removal of existing waterproofing membrane at skirting
Removal of existing waterproofing membrane at skirting
Removal of existing waterproofing membrane at skirting
Make good the substrate
Make good the substrate
Use high pressure water jet to clean the substrate
Use high pressure water jet to clean the substrate
Use high pressure water jet to clean the substrate
Condition after water jet cleaning
Surface preparation
Surface preparation
Surface preparation
Apply epoxy primer
Apply epoxy primer
Apply epoxy primer
Apply epoxy primer
Spray apply waterproofing membrane to the primed substrate
Spray apply waterproofing membrane to the primed substrate
Spray apply waterproofing membrane to the primed substrate
Apply UV resistant top coat on the cured waterproofing membrane
Apply UV resistant top coat on the cured waterproofing membrane
Fill up the groove with joint sealant
Fill up the groove with joint sealant
Install stainless steel flashing
Completion of Works
