Challis Report 20220630.pdf

Challis Restoration Services 1829 195Th St Clarence IA

52216

Brian Nail Date 6/30/2022 2850 Prairie Du Chien Rd NE Iowa City, IA 52240

Brian June 28, 2022, I inspected the building at the above location for moisture from the loss dated June 6, 2022. The equipment was pulled June 15, 2022. My readings were taken 13 days after the building had been dried down. The moisture levels that I’m finding have been wet for 13 days and in my opinion the moisture levels were higher 13 days ago.

Rooms

102 The only moisture that I found in this room was in the sill plate. This moisture was above 16%. This moisture was a result of the water loss dated 6/25/2022

103,104 and 105 I didn’t find any moisture

106 had 11, 14 & 16 % moisture along the north wall in the sub floor. The subfloor below the northeast corner of the desk was at 23% moisture. To the right as you walk into the room the sub floor was at 20%. Along the east wall the sub floor was at 21%. The water is starting to release the glue under the carpet.

107 As you walk into this room near the left side of the doorway the sub floor was at 23%.

Halfway into the room and along the west wall the subfloor is at 18% moisture. In the northwest corner of this room, we slid the file cabinet out. That Sub floor is at 13% to 40% Moisture and smells Moldy. In the northeast corner of this room was another file cabinet.

Under this Cabinet The sub floor is at 41% moisture. In the middle of the east wall, I probed the sub floor between the sub floor and sill plate. That moisture was at 15%. In the southeast corner of this room the subfloor is at 22% moisture.

108 The drywall below the window scanned at 19%. To the left of the window the drywall scanned at 30%. The sub floor below the window and near the corner of this room the subfloor was at 25%. We removed the cabinet to get this reading. The water in this corner leached into the next room (109).

109 Below the desk and in the southeast corner the sub floor was at 13% This number isn’t alarming, plywood in this age of a building and in our zone should be at 8%. This being at 13 tells me the water traveled under the wall.

110 I didn’t find any moisture

Bathrooms I didn’t find any moisture Stair well I didn’t find any moisture

Kitchen East wall sill plate was at 11% and the drywall had been cut out before I was called.

It’s my understanding that there was pooling water in the center of the floor, and it migrated to the east wall.

The only moisture I found in the original building was in the threshold going into room 123.

When I was on site, I took the temperature and humidity reading of the basement and 1St Floor.

Basement Readings

Temperature 76 degrees Humidity 52.8

1st Floor Readings

Temperature 72 degrees Humidity 57.2

Moving Forward

1) There is suspicious looking texture on the plaster in rooms 118-123. Where samples of suspicious hazardous materials taken before starting to dry down?

2) The flooring in the kitchen is non-permeable and won’t allow water to pass through.

This should be removed to ensure that there isn’t any mold growth.

3) Room 106 and 107 should have the vinyl cove base removed and inspected for mold growth on the drywall. The carpet should be removed, inspected for mold growth followed by drying the sub floor down to pre loss moisture level.

4) Room 108 should be completed the same as room 106 and 107 except for adding the removal of wet drywall and insulation on the south wall. This wall will probably require additional drying down. If mold growth is found on the exterior wall, window or trim it will need to be removed.

5) Room 109 should have the vinyl base removed in the southeast corner below the desk. The carpet is already loose from the water infiltration from room 108. Will need to remove the carpet out from that corner. Inspect the carpet and sub floor for mold, then dry wet material down to pre loss moisture level.

6) Some of the moisture was found under file cabinets that weren’t removed during the dry down. These cabinets need to be inspected for mold. The bottom side of the cabinets should be wiped down.

7) The affected area needs to be treated with a anti biacromial disinfectant when completed. Before being sprayed have someone authorize it’s use.

8) This loss has had some areas with high moisture content for 13 plus days. I would want a clearance sample pulled for mold.

9) I mentioned the temperature and humidity of the basement and 1st floor. The Humidity typically needs to be at 55 or higher before mold grows. Considering this situation, I would install dehumidifiers throughout the affected areas to control the environment until the building is back to pre loss moisture levels and weathered in.

Equipment used to monitor:

Delmhorst pro 3-1 Moisture Meter Penetrating, Non-Penetrating, Thermo-hygrometer Delmhorst Slide hammer Electrodes Hydro Shark moisture probe

Brian Without being there at the time of the loss it’s impossible to find everything. I checked what I could. I was able to probe the drywall ceilings but there were locations that had ductwork up against the drywall. This was also the case in the original part of the building where I suspect asbestos texture on the plaster ceilings. In the end everything needs to be dried down to the pre-loss moisture levels. For example. The sub floor should be at 8% when dried down. All pre loss moisture levels can be found by gathering readings in the un-affected areas.

Best Regards

Dean Challis Challis Restoration Services 563-357-0164