Introduction Observations

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1 Architecture Roof Consulting Construction Technology AA C North Fern Creek Avenue Suite 100 Orlando, Florida (407) FAX (407) October 12, 2013 Mr. David Martin, Project Manager Brevard County Public Schools Office of Plant Operations and Maintenance 1254 South Florida Ave. Rockledge, Florida Re: Investigation of Leaks at Main Entrance of Brevard County Public Schools Educational Services Facility, 2700 Judge Jamieson Way, Vieira, Florida, Introduction Moisture has been received in the soffit at the main entrance of the Brevard County Public Schools Educational Services Facility for some time. The purpose of our investigation was to observe the construction and condition of the materials in place, review the construction documents, and provide a professional opinion as to the cause of the moisture intrusion and available corrective action. Photograph 1 is an overall ground level view of the main entrance of the educational services facility in Vieira, Florida. The main entrance to the building is inside a covered area beneath the dome. Water is received in the ceiling. Observations

2 jjw-dm-brevard County Public Schools Educational Services Facility. A/R/C Project No Page 2 of 13 Photograph 2 shows a light fixture in the ceiling of the covered entrance of the Educational Services facility. Water is received around the perimeter of the light fixture. Photograph 3 shows another location where water was received in a light fixture in the ceiling of the entrance. Photograph 4 shows the gutter above the entrance seen in photograph 1. At this location a lap occurs. The lap in the gutter has been riveted. The metal is extensively corroded at the lap. This condition is not related to the leak in the ceiling and is provided for information only.

3 jjw-dm-brevard County Public Schools Educational Services Facility. A/R/C Project No Page 3 of 13 Photograph 5 shows another lap location at the gutter that was observed to be rusted. The rust at the laps of the gutter is unrelated to the leaks in the ceiling of the main entrance, however it was observed and was provided for information. Photograph 6 shows the gutter seen in photographs 4 and 5 from above. The steel sheetmetal has extensive surface rust in it. The steel sheetmetal has a high performance paint on the outside and less durable paint on the back or concealed side. Unfortunately, the concealed side of the gutter is the location where water is received. The paint broke down, the steel rusted, and perforation is occurring at various locations. This condition is unrelated to the leaks in the entrance ceiling, however it is provided as a condition that should be monitored if not corrected. Photograph 7 is an overall roof top view of the dome at the entrance seen in photograph 1. The surface material is stucco on metal lath secured to steel framing. There are two low sloped roofs that step up to the dome seen in the photograph. The dome has a surface of stucco. From what we have learned, the stucco was applied over two layers of plywood secured to steel framing.

4 jjw-dm-brevard County Public Schools Educational Services Facility. A/R/C Project No Page 4 of 13 Photograph 8 shows the wall/metal roofing interface seen in photograph 7. A surface mounted flashing has been applied to the stucco. The paint on the stucco has broken down, and the sealant has failed and separated. Water running off of the roofs above can be received at this location. Photograph 9 shows the two roof levels that step up to the dome. The wall finish is stucco applied to paper backed metal lath. The stucco is extensively cracked. The edge metal is extensively rusted. Photograph 10 shows the edge of the first roof. The edge metal is extensively rusted at the perimeter. The second roof above has a vinyl track that remains from siding that was previously in place.

5 jjw-dm-brevard County Public Schools Educational Services Facility. A/R/C Project No Page 5 of 13 Photograph 11 shows the edge of the roof seen in photograph 10. The metal is perforated and extensively rusted. Water is received at this location. Photograph 12 shows the surface of the roof. A coating has been installed over what appears to be a cementitious coat or stucco. The coating is blistered and water is found beneath the surface. Photograph 13 shows a corner of the second roof level seen in the background of photograph 10. The corner is extensively rusted, and the wood blocking behind it is deteriorated. Water is received at this location.

6 jjw-dm-brevard County Public Schools Educational Services Facility. A/R/C Project No Page 6 of 13 Photograph 14 shows the perimeter of the upper roof at the west side. The material has separated. Water running over the edge is received causing the metal to corrode. As the metal corrodes, the steel expands allowing more water to be received. Photograph 15 shows another location where a coating has been placed over what appears to be stucco. The coating is extensively blistered and separated. Water was found in the surface of the cementitious material. Photograph 16 shows a location at the south side. The upper roof has separated from the metal beneath it. The coating on the second roof level is extensively blistered. The edge of the metal roof has received water, caused the metal to rust, and followed with the material expanding. Once the rust expands, more water is able to enter.

7 jjw-dm-brevard County Public Schools Educational Services Facility. A/R/C Project No Page 7 of 13 Photograph 17 shows an overall view of the south side of the upper roof. Numerous blisters can be seen in the upper roof as well as the dome. As the blisters break, water enters. Photograph 18 shows a location at the south side where the metal has completely failed. This occurs periodically around the perimeter. Water running over the edge will be received at this location and directed against the wood blocking beneath the roof. The water will then follow the steel framing down to the ceiling below. Photograph 19 is a closeup view of the upper roof meeting the dome. A crack occurs around the perimeter of the dome. At several locations, the crack was wide enough to easily insert a knife. Water running down the dome would be received at this point.

8 jjw-dm-brevard County Public Schools Educational Services Facility. A/R/C Project No Page 8 of 13 Photograph 20 shows a location where the coating has easily peeled off of the dome. The coating is blistered at many locations. It appears the material was placed over a wet substrate and as a result has blistered. Photograph 21 shows a corner of the upper roof. This condition is typical in that cracks occur in the surface at many locations. The perimeter of the roof is extensively rusted. Photograph 22 shows the edge of the upper roof at the east side. At this location the remains of the vinyl siding between the upper and lower roof can be seen. The vinyl siding is not secured and has pulled away from the wall. Water running over the edge of the roof would be received at this location as well. The metal edge of the roof is extensively rusted.

9 jjw-dm-brevard County Public Schools Educational Services Facility. A/R/C Project No Page 9 of 13 Photograph 23 shows another location at the east side where the perimeter edge metal has completely failed. Water received at this point will be directed to the blocking below where it will deteriorate the wood and steel. Photograph 24 shows the upper roof at the north side. The metal is perforated. Water is received at the edge of the roof. Once water enters at this location, damage to the wood blocking and steel framing can occur. Photograph 25 was taken on the upper roof at the interface with the dome. It is important to note that many cracks occur in the surface, as well as at the perimeter of the dome.

10 jjw-dm-brevard County Public Schools Educational Services Facility. A/R/C Project No Page 10 of 13 Photograph 26 shows a significant crack in the surface of the upper roof. When foot pressure was applied at this location, water exited from the crack. Photograph 27 shows the interface of the upper roof against the base of the dome. The coating has failed and a crack follows the perimeter of the dome. Water running down the dome would be received at this point. Photograph 28 shows the coating, stucco, and a metal flashing removed for observation. The metal flashing was extensively rusted to the point of failure. The material seen in the background appears original to the building. The original flashing has received water, however it is intact at this time.

11 jjw-dm-brevard County Public Schools Educational Services Facility. A/R/C Project No Page 11 of 13 Photograph 29 shows another location at the base of the dome. The stucco of the dome is extensively cracked and a separation occurs between the base flashing and the dome. Water running down the surface of the roof would be received at this point. Photograph 30 shows a piece of stucco removed. The stucco was applied to metal lath. The lath where observed was often extensively rusted causing additional cracks. Photograph 31 shows an opening at the west side where a wall occurs between the upper and lower roof. The stucco was observed to be applied to metal lath and secured to framing.

12 jjw-dm-brevard County Public Schools Educational Services Facility. A/R/C Project No Page 12 of 13 Photograph 32 was taken inside the opening seen in photograph 31. Plywood can be seen applied to framing of the dome at the right side of the photograph. The plywood at the center left occurs at the upper roof level. It is important to note that extensive water stains can be seen on the steel framing. Exhibit A found at the end of this text presents Section 1 found on Sheet A112 of the architectural drawings for the building. Section 1 illustrates the original construction of the dome and the two lower roofs. Review of Section 1 shows that the dome is constructed of steel framing to which plywood was attached, followed by stucco and a curved metal standing seam roof. The lower roofs were intended to have metal flashings over wood framing. Review of the condition seen in photograph 32 shows that plywood occurs on the upper roof. Presumably this was installed to support the metal that was ultimately placed. Exhibit B found at the end of this text presents the Dome Framing Plan taken from Sheet S-600 of the structural drawings for the construction of the building. The drawing specifies that sixty steel studs were to be placed around the perimeter framing the dome. Exhibit C found at the end of this text presents Typical Dome Elevation A found on Sheet S-600 of the structural drawings for the Educational Services Facility original construction. The dome elevation further illustrates the construction of the dome. Strapping has been used to brace the metal studs of the dome. Photograph 33 shows a typical condition where the metal roof panel meets the edge of the roof. Water has run down the panel and caused the edge of the panel to deteriorate. At this location, the rust is advanced causing the steel to flake and perforate at the left side. Conditions of this type occur at various locations on the building. This condition and others like it are unrelated to the leaks in the soffit, which is the subject of this report, however it is provided for information purposes with a recommendation that the rust be monitored and treated to avoid the lost of the roof system.

13 jjw-dm-brevard County Public Schools Educational Services Facility. A/R/C Project No Page 13 of 13 Summary The coating, stucco, and metal flashing have all failed and are receiving water. The water migrates down through the framing to the ceiling of the stucco soffit below. The blisters observed in the surface indicate that the coating was placed over the wet substrate resulting in extensive blisters. As the blisters failed, additional water is received. A separation occurred around the perimeter of the roof, which allowed more water to be received. Once the water entered between the waterproofing barrier and the metal, the metal rusted and the blocking has deteriorated. As a result of using steel flashing metal, the leaks have caused the steel to rust and allow further moisture intrusion. Recommendations We recommend that the coating and stucco on the dome and two roof levels must be removed. The substrate where deteriorated must be repaired or replaced, so as to provide sound materials to which new finishes can be applied. We recommend the following scope of repairs. Dome Remove the stucco, so as to expose the plywood. Replace damaged plywood. Reattach plywood where necessary to provide a Florida Building Code compliant fastening pattern. Install a modified bitumen underlayment system. Install a curved aluminum panel standing seam roof that would replicate the original appearance of the building. Low Slope Roof Areas (Upper and Lower) Remove all roofing, flashing, and sheetmetal to expose the substrate. Replace damaged substrate, so as to provide sound attachment. Install modified bitumen underlayment. Install an aluminum panel standing seam metal roof of the same type and module as the dome above. Vertical Surfaces Remove the stucco finish. Replace damaged sheathing as required. Apply a peel and stick modified bitumen underlayment. Install a subframing system. Install aluminum metal panels of similar color and finish to the metal roofing of the dome. Please contact us if we can provide further information or clarification of the preceding. Sincerely, A/R/C Associates, Incorporated Joseph J. Williams, President Architect AIA, Roof Consultant, RRC Attachments: A, B, and C

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