Crawford Roof Maintenance Service Company
Professional Roof & Exterior Building Maintenance

Project Profiles

Wind Damage to Upper Roof (see photos)

March 16, 2006

Property Manager
Itasca, IL

Re: Wind Damage to the Upper Roof
At an Office Building in Itasca, IL

Dear:

I wanted to give you a brief letter describing the conditions we found and our temporary repairs that were performed to the wind damage that occurred on March 14, 2006 at the above-mentioned address. An area of wind damage was reported to our office at approximately 8:00 am on the morning of March 14th. At approximately 9:15a.m. our first crew arrived onsite to assess the conditions and we found a large area at the southwest corner of the roof to be billowing in the strong winds. The membrane and insulation were experiencing wind damage and an area that was becoming delaminated continued to become larger as the strong winds continued during the late morning. A large area on the west side of the penthouse, approximately 100 feet long by 30 feet wide was found to be experiencing wind damage and our initial observations revealed that in some areas the insulation facer was delaminating from the insulation board allowing the membrane to separate from the insulation core. In an attempt to prevent a catastrophic roof blow-off we dispatched additional crews and brought some temporary ballast up onto the roof. The wind pressure was too strong for the ballast and therefore we supplied and installed termination bars that were screwed through the roof membrane and insulation and secured into the concrete deck with tapcon fasteners. The termination bar and fasteners were then temporarily patched with a pressure sensitive EPDM membrane cover strip. A representative from your office and a roof consultant were onsite to observe the temporary work and we were advised that the roof manufacturer would be inspecting the site on Thursday, March 16th to evaluate the conditions.

On March 15th at around a two-man crew returned to the blow-off to check over the area and button-up any obvious openings. While onsite additional securement plates and fasteners were installed to hold the roof membrane and insulation down. The patch installed at the damaged drain, was removed and our plumber returned late in the afternoon to perform permanent repairs to the damaged drainpipe and bowl. We then installed a temporary patch at the drain after the plumbers completed their work.

On the morning of March 16th, our superintendent, spoke with the roof consultant at 6:00 a.m. to see if our services would be needed when the manufacturer’s representative opened up the roof as part of their investigation.

I’ve enclosed some photographs for your review. Please keep in mind that the repairs that were performed are temporary in nature and during those repairs we found some additional holes in the roof and some wet insulation. We recommend that the entire roof be closely inspected for any other areas of damage related to the wind or small tears from wind stress on the membrane.

Sincerely,

Crawford Roof Maintenance Service Co.

Click on photos to enlarge.

An overview of the area at the west side of the penthouse that experienced wind damage.	Another view of the wind damage.
An area at the northwest end of the roof that has areas where the membrane is becoming delaminated and billowing up.	An overview of the delaminated membrane.
An overview of our temporary repairs where a termination bar was fastened through the membrane and insulation and into the concrete deck and temporarily patched with a pressure sensitive EPDM cover strip.	An overview of our crew installing temporary termination bar and EPDM cover strip.
A close-up view of some of the temporary repairs.	Another overview of temporary repairs and the temporary securement of the roof drain that had pulled out of the pipe.