Roof Drainage Repair Edmonton June 10, 2015.

Article: Multi-Family Apartment Flat Roof Drainage Repair Edmonton, Alberta.

Below is a site report from a low slope roofing crew of ours in Edmonton. Service order per engineer roof inspection was roof drainage repairs. This was to include work to external scuppers, internal drains, flashing and down-spouts on a torch-on SBS modified bitumen flat roof system. February 21, 2015: Roof Inspection and Scope of Work Determined. Maintenance and Repairs (per Engineer report). Supply and Install: 32 penetrations (vents) will need roof nails removed and proper screws installed, 1 - 12 inch chimney vent with flashing installed 2 ft X 2 ft, replace old drains with new 4 inch retro fit drains with u flow and proper screens they also two major ponding spot and I recommend that we put in 2 - 6 inch scuppers with down pipe to relieve those areas of water the last thing is to remove all debris from the existing scuppers and roof its self.
Roof drain to be retro-fitted.
Roof drain to be retro-fitted.
Roof Drainage Repair Edmonton. Roof ponding issues.
Roof Drainage Repair Edmonton. Roof ponding issues.
Chimney flashing.
Chimney flashing.
Roof drain with no u-flow.
Roof drain with no u-flow.
Roof ice everywhere due to ponding water on roof.
Roof ice everywhere due to ponding water on roof.
Materials needed: Sheet metal flashing for chimney and vent. 2- 4 inch drains with basket. 2- 4 inch u flows. 2 - 6 inch scuppers. 80 ft of 3 inch down pipe white. 5 elbows. 1 bag of 1.5 inch wood screws with rubber grommets 100 pieces. 1 can of spray primer. 1 roll of cap frost grey. 1 roll of 180 flam-flam. 1- 3 gal can of Sopramastic. February 27, 2015: Crew Attends to Location. Repairs Completed.  Site Location: 10716 - 102 Street Edmonton, Alberta. This site's scope of work is specific to the engineers report to repair a number of issues relating to flat roof drainage. We started with the drains which took extra time to remove the old drains since they used gum to make their seal on the drop drain (the previous roofers). Which didn't work. Then we started on the repair of the external drainage scuppers and completed them. We then unloaded most of the tools and started with replacing the nails in the plumbing vent curbs with screws with rubber grommets. We then started to install the down spouts.
2 Ply SBS Scupper Repair
2 Ply SBS Scupper Repair
SBS Base Scupper Repair
SBS Base Scupper Repair
Drain Repair Torch On Base
Drain Repair Torch On Base
SBS Torch On Drain Repair
SBS Torch On Drain Repair
Drain Repair Needed
Drain Repair Needed
Torch On Scupper Repair
Torch On Scupper Repair
Downspouts re-directed and installed.
Downspouts for re-directed water installed.
< End of Report >
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.

Drayton Valley Commercial Roof Leak Repair, June 2011

This article covers a commercial leak repair in Drayton Valley and also includes a follow-up service call. Photos relating to both service calls are supplied. Roof Report, June 7, 2011: First I met with the manager on-site and examined the leak areas from the inside. Then I went onto the roof and began examining the suspect areas around RTU (rooftop unit) #4 and RTU #6. I found loose curb stripping under the flashing but was unable to repair at that time due to heavy rainfall. I advised the manager that I would return the next day. Roof Report, June 8, 2011: I informed the staff on-site that I would be working on roof. Then I went onto the roof and removed and replaced the flashing. Lastly I repaired the stripping with ModBit compatible mastic (2 tubes).
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Significant leaking had entered the building through the roof and had visibly stained many of the ceiling panels.
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The inspection revealed crumpled base flashing, an unfastened termination bar, and exposed seams on the roof surface around a unit.
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For the first unit, we removed the base flashing and applied liquid rubber around all of the seams.
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Clear water staining on the roof surface around this unit, with a small trail leading into it. This indicated where leaks were entering into the building from.
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The leak lead to an exposed seam underneath the unit, which was slightly tearing apart. We applied coatings over the deficient sections.
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The same process was repeated for the second unit. We completed removed the old flashing to expose the base.
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After coating over any tears along the seams, or pockets
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As with the other unit, there were clear paths of where water was entering from into the building.
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The edge of the roof had significant waterpooling, indicating that it was not sloped correctly or the drainage systems were failing.
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Another pattern of entry could have been a critical amount of standing water leaking through the base of these vents.
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Most of the roof had significant tearing along its seams, and there were signs that water had been standing throughout the roof -as indicated by these white stains.
  Follow-up, June 12, 2012: The following email was sent by the client's maintenance manager prompting a follow-up service call:
In speaking with the store, water seems to be entering the store when it rains. From the description the manager noted, it seems the curb flashing on one of the roof top units may require attention as the water is running along side the supply air duct work that protrudes through the roof. Our HVAC vendor was on-site in May to complete an inspection and had not noted there to be any obvious concerns at that time. However, they are not due back until mid-July or so. The area is to the right hand side of the check out area. One ceiling tile is obviously wet. It would be appreciated if you may confirm to have your roofing vendor out within the next day or so while the weather is favourable to make such a repair. Once complete, please do ensure to have any interior water damages as results (ie, water stained or missing ceiling tiles) addressed. Please do advise as to your roofer's anticipated arrival. For the time being the store has been putting a bucket in the area to catch the water whenever it rains. Regards,
Roof Report, June 13, 2012: We arrived on-site and inspected the damage from the inside. After gaining access to the roof, we identified the problem area as being an HVAC unit near the southwest corner. To determine exactly where the leak was coming from, we performed a leak test. We brought buckets of water up onto the roof and splashed it all around the HVAC unit. A total of 8 buckets of water were used in this test, but we did not manage to find the problem. It was determined that in order to accurately find the leak we would have to wait for the rain to come. The downspouts appear to be crushed near the bottom, and the northern most down spout seems to be half missing. The pooling of water by the downspouts has to do with the location; the parking lot asphalt where the spouts are is sloped in a way that the water pools by the eastern wall of the building.
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Water ingress had occurred during rainfalls. Although not as significant as before, some ceiling panels were once again stained by the leaks.
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We inspected the attic again for signs of leaking around the newly stained panels. This would help us pinpoint where water tests ought to be performed on the roof.
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One of the downspouts was crushed near the bottom, with rusting all throughout.
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The downspout on the northern side of the building was half-missing. On both accounts, water was pooling by the wall due to the slope of the parking lot.
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We went back to the roof to do some water testing. The leak entry point was pinned down to an HVAC unit in the southwest corner of the building.
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Since the client had not approved a roof recovery, replacement, or re-sloping, we had once again found significant waterpooling on the roof. However, water was not entering the building through the vent it was adjacent to in this case.
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One of the candidate units had some standing water around its base, as well as over a run of exposed seams on the roof surface.
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The flashing around the unit also had to be sealed in. Parts of the membrane around it had been forming bubbles or was beginning to curl upwards at the seams.
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Furthermore, the coatings that were originally applied over the seams were past their age.
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Water testing was performed to see what route it would take around the HVAC unit and into the building.
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Eight buckets of water were used for testing around the suspected units.
  < End Report > CODE: 5009 Contact Us 24 Hour Emergency Roof Repair. Telephone: 1.403.873.7663. Email: info@calgaryroofrepair.ca. Mailing: 240 – 70 Shawville Boulevard SE Calgary, Alberta. T2Y 2Z3. For all other areas of Canada call 1.877.497.3528 Toll Free. We service all areas of southern and central Alberta and south east British Columbia including Airdrie, Banff, Calgary, Canmore, Crossfield, Carstairs, Didsbury, Olds, Sundre, Three Hills, Drumheller, Hanna, Brooks, Bassano, Strathmore, Chestermere, Irricana, Cochrane, Black Diamond, Okotoks, Priddis, Bragg Creek, Cranbrook, Fernie, Panorama, High River, Vulcan, Medicine Hat, Lethbridge, Taber, Sylvan Lake, Red Deer and other Alberta rural points between.