Case Study
Customer:
Project Completed:n/a
Type of Roof: 4 ply tar and gavel build-up
Materials:n/a
Location: Surrey, BC
Project Completed:n/a
Type of Roof: 4 ply tar and gavel build-up
Materials:n/a
Location: Surrey, BC
Exterior Overview:A multi-tenant industrial and commercial use building with 2-floor office access in the front and warehouse roll doors in the rear.
Roof Analysis:
This is a 4 ply Tar & Gravel built-up roof applied to 4×8 sheets of standard High-density fibreboard. The thickness of the fibreboard has not been determined by a test cut. The deck is metal and has been engineered to provide slope to the center for drainage.
Roof Evaluation:
This roof appears to be in acceptable condition relative to its age. This should be credited to the slope of the deck. Several roof protrusions, such as lead stacks and chimney vents, are no longer in use and should be eliminated upon reroofing. The primary area of potential future maintenance expenses is that of the common valley. Due mainly to water flow volume, this valley area has been the target of past maintenance actions. Ponding water is also contributing to the accelerated deterioration of this specific valley area relative to other areas on this roof.
Issues of note:
View photo descriptions above
Summary and Recommendations:
It is my suggestion that one should expect to get another 5 years of service from the existing roof system. Budgetary amounts for reroofing are expected to be maximized at $6 per square foot in 2006 dollars. Potential installation of additional valley drains should be investigated for plumbing options before reroofing but not to be installed until that time. Attention should be put toward all above-mentioned issues. No further expenses are required in preventative maintenance.
Prepared on January 27, 2006 by Greg Krushel, T.Q.
Inter-Provincial Trade Qualification # J-23-24221 (July 1991)
Roof Analysis:
This is a 4 ply Tar & Gravel built-up roof applied to 4×8 sheets of standard High-density fibreboard. The thickness of the fibreboard has not been determined by a test cut. The deck is metal and has been engineered to provide slope to the center for drainage.
Roof Evaluation:
This roof appears to be in acceptable condition relative to its age. This should be credited to the slope of the deck. Several roof protrusions, such as lead stacks and chimney vents, are no longer in use and should be eliminated upon reroofing. The primary area of potential future maintenance expenses is that of the common valley. Due mainly to water flow volume, this valley area has been the target of past maintenance actions. Ponding water is also contributing to the accelerated deterioration of this specific valley area relative to other areas on this roof.
Issues of note:
View photo descriptions above
Summary and Recommendations:
It is my suggestion that one should expect to get another 5 years of service from the existing roof system. Budgetary amounts for reroofing are expected to be maximized at $6 per square foot in 2006 dollars. Potential installation of additional valley drains should be investigated for plumbing options before reroofing but not to be installed until that time. Attention should be put toward all above-mentioned issues. No further expenses are required in preventative maintenance.
Prepared on January 27, 2006 by Greg Krushel, T.Q.
Inter-Provincial Trade Qualification # J-23-24221 (July 1991)
MEET OUR
PARTNERS
