Edmonton Commercial Flat Roof Inspection, August 2011

This report follows an initial inspection for a commercial client requiring a roof replacement. Also included is a correspondence sent to the client by our project manager. Inspection, August 19, 2011: This roof is accessible by hatch. The current roof system is tar and gravel and is experiencing multiple leaks. Upon inspection I found approximately twenty blisters, numerous spots of surface erosion, and sealants cracking around vents. The client would like a quote for replacement. He will be removing the outside lighting which is set on the parapet walls, but would like us to remove the satellite dish.
The following email was sent to the client by our project manager:
Good morning,
Please find attached the pricing you requested, sorry about the delay - if there is any problem opening the attached let me know and I will resend in a different format.
The documentation and internet links in the attached report detail our; Workmanship Guarantee, System Options and Methods, Credentials, 2011 Schedule Availability, Links to Manufacturers, GRS Project Portfolio and Clients, etc.
Beyond attempting repairs, there are two different methods to do your roof.
One method is to rip the old roof off (a complete replacement) and the other is a new Roof Recovery System.
A Roof Recovery would have our crew scraping the gravel off, taking the old membrane and soaked insulation off (as required only) and then mechanically attaching a fiber board and putting a new roof over top (SBS Torch On, Tar and Gravel Mop On, EPDM, TPO, or PVC per quote).
Typically a roof recovery is what is done. A roof recovery is less intrusive, it is more environmentally friendly as the old bitumen layers don't end up in the land fill, the old system also has an inherent R Value of usually around 7, it is less costly, and the life-cycle is the same as a complete replacement.
However, if you find that you want or are required to completely remove the old system down to the substrate (the sheathing or metal Q deck), we can accommodate this and the pricing is included in the attached documentation also.
Additionally, there are a number of different membranes available, which I've detailed in the quote. Essentially, it comes down to 1) A traditional 4ply mop on tar and gravel (BUR), 2) 2ply SBS Mod Bit (torch down or cold apply), or 3) Single ply; black rubber membrane (EPDM) or a white membrane (TPO or PVC) depending on whether you want to draw the sun in or not. EPDM, TPO, PVC are available in multiple colors, however EPDM out of the box is typically black and TPO / PVC are typically white.
Single ply systems are what are being installed more and more now (for GRS singly ply is about 80%), however, we install all system types. I would encourage you to consider the life-cycle costing and maintenance / repair benefits of a single ply system prior to choosing a system.
Have a read and let us know what you think - I know there is a lot of information so I'm sure you will have questions.
Thanks for the opportunity to quote - it is very much appreciated!
< End Report > CODE: 11361 Contact Us Call our 24 hour emergency roof repair at 1.780.424.7663. Mail to: 3428 99 Street NW Edmonton, Alberta T6E-5X5. We service all of Alberta including Edmonton, Stony Plain, Spruce Grove, Fort Saskatchewan, St Albert, Sherwood Park, Leduc, Nisku, Beaumont, Lac La Biche, Grande Prairie, High Level, Westlock, Slave Lake, Edson, Drayton Valley, Devon, Camrose, Wetaskiwin, Tofield, Lamont, Morinville, Vegreville, Tofield, Millet, Calmar, Evansburg, Redwater, Onaway, Viking, Athabasca, High Prairie, Valleyview, Fairview, Peace River, Whitecourt, Mayerthorpe and many more rural areas and towns.

Edmonton Residential Flat Roof Inspection, May 2011

The original inquiry started with the client needing suggestions on what to do for a patio cover. However an inspection of the site led to the discovery of additional concerns, the main one being ice damming on the rooftop. It became apparent that the roof was in very poor condition and should ideally be replaced. Once on-site the crew noticed an unusually large amount of ice damming which prompted them to go onto the roof and take a closer look. The client also came up on the roof and was shocked by its condition. Ice damming had taken away almost all of the gravel in the areas affected and the underlying tar was cracked as well. Other areas of the roof show significant wear. Upon querying the client, the crew discovered the age of the roof to be approximately 30 years old. The client also indicated that she might be interested in replacing the siding and eavestroughing as well.
1
Ice damming had caused significant amounts of gravel to expose parts of the roof. There were tears in the tar surface around the edges of the roof, as well as around some rooftop appliances. We also inspected the flashing around the base of the chimneys and noted signs of significant wear.
4
The flashing around the chimney was rusting, and did not extend all the way down to the roof surface. Much of the gravel around its base was also missing. We found tears along the chimney-roof connection. The perimeter flashing was in much worse shape, with sections completely bent away from the roof. Finally, we inspected the drains and plumbing boots. Some of the surface tar had small holes around the drains.
3
After completing the inspection, we took measurements of all flashing components as part of the quotation we would later provide to the client for a roof replacement.
2
Finally, we inspected all penetrations, downspouts, and gutters. We noted pockets formed between the roof surface and the edge flashing. As the ice dams had melted, water was entering the building envelope through them. Furthermore, one section of the roof used a metal sheet, which was past its life cycle; significant rusting and holes were found throughout the metal. In general, most of the roof had also been exposed over a long period due to the missing gravel not being replaced.
The following email was sent to the client by our project manager so that she could better understand the replacement and recovery options:
With respect to the house roof replacement please find attached the pricing you requested. The documentation / links detail our Workmanship Guarantee, System Options and Methods, 2011 Schedule Availability, Links to Manufacturers, our Project Portfolio and References. There are two different methods to do your roof, one is to rip the old roof off (a complete replacement) and the other is a new Roof Recovery System. The Roof Recovery has our crew scraping the gravel off, taking the old membrane and soaked insulation off (only as required) and then attaching a fibre board and then putting a new roof over top (SBS, Mop On, EPDM, TPO, or PVC per quote). Typically a roof recovery is what is done. A roof recovery is less intrusive to our client, it is more environmentally friendly as the old bitumen layers don't end up in the land fill, the old system also has an inherent R Value of usually around 7, it is less costly, and the life-cycle is the same as a complete replacement. However, if you find that you want to completely remove the old system down to the sheathing we can accommodate and the pricing is included also. Additionally, there are a number of different membranes available in today's market, which I've detailed in the quote. Essentially, it usually comes down to 1) a traditional 4ply mop on (BUR), 2) a 2ply SBS torch down, or 3) a single ply; black rubber membrane (EPDM) or a white membrane (TPO or PVC) depending on whether you want to draw the sun in or not. Single ply systems are typically what we install more and more - we install all system types, but I would encourage you to consider the life-cycle costing and maintenance / repair benefits of a single ply system prior to ordering. Have a read and let us know what you think - I'm sure you will have questions. Thanks for the opportunity to quote - it is appreciated.
< End Report > CODE: 6707 Contact Us Call our 24 hour emergency roof repair at 1.780.424.7663. Mail to: 3428 99 Street NW Edmonton, Alberta T6E-5X5. We service all of Alberta including Edmonton, Stony Plain, Spruce Grove, Fort Saskatchewan, St Albert, Sherwood Park, Leduc, Nisku, Beaumont, Lac La Biche, Grande Prairie, High Level, Westlock, Slave Lake, Edson, Drayton Valley, Devon, Camrose, Wetaskiwin, Tofield, Lamont, Morinville, Vegreville, Tofield, Millet, Calmar, Evansburg, Redwater, Onaway, Viking, Athabasca, High Prairie, Valleyview, Fairview, Peace River, Whitecourt, Mayerthorpe and many more rural areas and towns.