100323 RFQ Addendum 1.pdf

State University of New York at Oswego SUNY Oswego Project:

100323

Addendum No.1 Page - 1

Addendum No. 1 Date of Addendum: November 24, 2025 Original Date of Contract Documents: October 29, 2025

Owner State University of New York at Oswego Purchasing Department 402 Culkin Hall Office of Facilities Construction Oswego, NY 13126

This Addendum amends Specifications and/or Addenda for the above titled project, as indicated below, and is hereby incorporated into the Contract Documents as part thereof.

ATTACHED: 2025 Moisture Study

Bidders should include the Acknowledgement noted with addendum number and dated with their submitted bid

SUNY Oswego

September 11, 2025

Submitted by:

LaBella Associates 300 State St.

Suite 201 Rochester, NY 14614

(585) 454-6110

Johnson Hall Mold and Moisture Study

Prepared For:

SUNY Oswego 7060 State Route 104 Oswego, New York 13126

Table of Contents

01 executive summary

02 history

03 existing analysis

01 executive summary

1.01 Project Background

LaBella was retained in December of 2024 to investigate the increased presence of visible mold growth within various rooms in Johnson Hall. The goal of the study is to review the current built and internal environmental conditions in an effort to determine the reason for mold growth and suggest mitigation methods to prevent said growth in the future. The report herein represents our understanding of current conditions, approach taken during our study, and our recommendations for mitigation and prevention.

Johnson Hall was constructed in 1956 as a dormitory for students on the SUNY Oswego Campus. It is a four story masonry building with a basement level.

The building was renovated in 2001, replacing portions of the exterior walls, repointing brick veneer, installing new aluminum clad wood windows, and installing a new copper standing seam roof.

In August of 2024 over 50 rooms on all levels began to show signs of high humidity and mold, which continued into the fall season. Mold was and continues to be most prevalent at the ceilings and soffit locations adjacent to the windows. It is also located at the side walls and on the furniture, which includes the tackboards and desks. In the fall season, some rooms had mold causing the outside moisture to bubble the paint. High humidity levels caused the dorm mattresses to obtain large amounts of moisture as well. This condition continued to occur even after cooling had been on and in effect.

The extent of the high humidity reached a point of 80% in the summer with an air humidity test conducted in late summer of 2024 showing a humidity percentage at 70%.

1.02 Approach

The following methods were initiated in order to complete a thorough investigation and conclusions for the ongoing humidity and mold issues at Johnson Hall: Existing document review, Forward Looking Infrared (FLIR) scans, investigation of the existing mechanical systems, and site inspections.

On multiple occasions team members went to the site to inspect the building in person; visually inspecting the exterior facade of Johnson Hall, the interior of the building and individual dorm rooms.

The exterior facade, vent openings, windows, weep holes, and flashing conditions.

Additionally, we discussed with the University Facilities team and maintenance personnel to draw off past experience and end-user complaints.

A request for a WUFI analysis was sent to Huntsman Solutions Batiments to determine if the existing wall construction would create condensation issues within the wall structure itself. WUFI is a computer program that can tell how moisture and heat flow affect building materials over time.

Unfortunately, the analysis would not help determine the cause of the mold in this instance, as the wall assemblies are code compliant and the analysis assumes perfect air sealing and continuous insulation.

Completing a WUFI analysis with the existing wall construction would conclude that there is no problems regarding moisture diffusion and heat transfer through the materials. As to the existing construction is code compliant; Improper installation of the batt or poly, material junctions not sealed properly, or water from the outside would not be picked up in the WUFI analysis and could be a potential variable in the cause of the infi ltration leading to moisture.

1.03 Building Comparison

In June of 2025, the team had investigated the Scales Hall building, located two buildings west of

Johnson Hall, where it was discovered that there appeared to be no mold present in any of the bedrooms or spaces.

Similarities:

The variables noted that were similar in comparison were that they both have the same type of use with similar spaces including bedrooms and common spaces. Both buildings are exposed to the same outside conditions and had evidence of condensation and/or moisture.

Diff erences:

The diff erence in variables between the buildings was the window operability: the windows at Scales

Hall were fi xed as opposed to the fully operable units at Johnson Hall. The exterior and interior wall construction at Scales Hall was complete masonry whereas at Johnson, the exterior is a combination of masonry and stud framing, with the interior mostly stud framing. Scales Hall is furnished with perimeter fi n heat but no cooling and Johnson is furnished with both heating and cooling units.

It was evident that humidity and condensation was present at Scales.

However, it was only located on the fl oor as opposed to the walls, which is the condition at Johnson

Hall. Condensation on the fl oors was because the fl oors were cooler than the walls . The interior surfaces on the separating walls of Johnson were much cooler than the outside walls which caused the condensation in that location.

1.04 Findings

Johnson Hall’s exterior envelope and operating systems are fairly new and generally in good condition. The items below represent a high-level overview of fi ndings from our study.

Additional items may be found within the individual narratives.

Upon a more in depth investigation of the building, the team explored the several locations that demonstrated the worst noted mold conditions provided by campus and as discovered from previous site visits.

A majority of the rooms were re-investigated in clusters within the same area to rule out any potential obvious route cause by a shared common mechanical system, structural or environmental factors.

It was found that because the mold appeared to be more erratic and spread in various locations, the possibility of the causes could be numerous variables in the controls, operability, and exposure of the rooms, leading to many possibilities that needed to be tested.

It was also discovered that in terms of how air was entering, circulating and being treated or not treated, the units cooled the space without use of fresh air. Students had full control of both the temperature using thermostats and operability of the windows at any time. Condensation was present at the surface of the walls, both within the rooms and in the corridors. At any time, there could be a mixture of diff erent air circulation and temperatures coming from the units, the surrounding temperature coming from the corridors and the outside temperature coming from the windows. This anomaly could pose issues in terms of humidity, leading to condensation and eventually mold.

1.05 Recommendations

In conclusion, the design team feels that the mechanical design has a large factor in the mold and moisture issue when the relative humidity is at a high point outside. The ideal scenario is to provide make-up air units that sense the conditions of the outdoor air, and operate the cooling and heating coils to provide acceptable temperature and humidity levels of the discharge air. This would require that the chilled water system operate for an extended period during the year, in which the operation of the system may need to be modifi ed and/or the system may need to be revised to allow operation during the cold months, or provide another means of cooling, such as a system utilizing refrigeration. For this equipment, if the outside air is at a high humidity level, the cooling coil would cool and dehumidify the air. Then the heating coil would heat the air to provide a temperature acceptable to the space at a neutral temperature or at a temperature to satisfy the space thermostat. By modifying the existing system and providing dehumidifi cation at the source of where the air is entering, this would also aid in the issue of condensation and humidity based on the fi ndings.

Another option is to control and address the variables discovered during the site observations in which students are given in terms of control systems. While not entirely eliminating the control, students can possibly be given a window of temperature to adjust to, avoiding extreme temperature changes and even possibly the event of a student leaving the temperature on and uncontrolled when unattended.

LaBella recommends the follow:

Phase 1.

1. Limit temperature/thermostat control by students in the individual rooms. Frequent or extreme thermostat changes can cause rapid shifts in temperature, which can lead to condensation on walls, ceilings, and ducts where mold thrives on. When thermostats are controlled or limited, HVAC systems run more effi ciently, proper air circulation and dehumidifi cation are maintained, and it helps prevent stagnate air in underused rooms.

Phase 2.

2. Provide a dehumidifi cation unit in the attic/truss space to dehumidify the outdoor air before each air handling unit.

The air handling unit would require no modifi cations and the chilled water system would not be required to operate for an extended period of time. This may be challenging due to the lack of available space in the attic. This would be simpler and provide more closely controlled humidity levels.

3. Replace the existing tackboards in all students rooms with a rubberized, non-porous, tack surface.

Phase 3.

4. Add a reheat coil to the discharge ductwork of each air handling unit. This would allow the air handlers to dehumidify the air through the use of the cooling coil when cooling is not required in the space. The air would then be reheated to a temperature suitable to the space. The control of the air handlers would need to be modifi ed. Additional control would be required to sense the outdoor relative humidity, and the discharge air temperature and humidity would be monitored.

The chilled water system would be required to operate from April through October. This would require the least amount of space in the attic/truss space for additional equipment.

1.06 Next Steps

The design team believes it would be necessary to address preventative maintenance frequency and process to include checking vents. Regular maintenance can ensure strong air fl ow, identify early detections of moisture issues before they cause mold. This can also prevent dirty or blocked vents and restriction of airfl ow which potentially leads to uneven cooling and humid pockets of air fl ow.

SUNY Oswego should perform maintenance required on the ductwork and consider restricting control of the thermostats and/or windows to see how that aff ects the mold situation. If further intervention is needed, a more in depth analysis of proposed mechanical solutions would need to be studied for their viablity, pros, and cons.

02 Observations & Recommendations02 History

HISTORY

2.01 Building Construction

Johnson Hall is a four story building located on the east side of the Oswego campus, with Lake Ontario to the north of the building. It is connected to the Lakeside Dining Hall and to Riggs, its neighboring residence hall.

The building was originally constructed in 1956 as the first of four Lakeside dormitories. Johnson Hall was the third residence hall built on Campus, following Lonis and Moreland Halls in the Mackin Complex. It was later renovated in 2001; replacing portions of the exterior walls, brick repair, window replacements, and roofing reconstruction. A large addition of a dining hall was also built in 2001.

Johnson Hall was named after Harold B. Johnson, who was honored for his work as former chairman of the Oswego Board Visitors Group, which established the State Dormitory Authority.

2.02 Current Occupancy

The building is a community-oriented Residence Hall for first-year students, offering double and some single rooms. There are approximately 250 students that live in Johnson Hall.

In addition to student rooms, Johnson Hall has a main lounge on the first floor, a deck overlooking Lake Ontario, a lounge/kitchenette on each floor, and laundry facilities.

Building Construction and Occupancy

02 Observations & Recommendations03 Existing Analysis

NARRATIVES

3.01 Existing Construction

The original building exterior wall construction consists of a cavity wall including CMU (Concrete Masonry Unit) brick and concrete foundation.

The 2001 renovated portion of the exterior wall system consists of cold form metal framing, foil faced batt insulation, gypsum sheathing, an air space, and brick veneer.

Various types of brick make up the field veneer and intermediate banding of soldier courses, both linear and arched, at window locations. The majority of the renovated areas are located at the third and fourth floor levels with smaller areas of newly replaced brick veneer accent panels at remaining levels. A band of cast stone sill separates the majority of the fourth floor level.

The roof construction consists of a standing seam copper roof system tied into the pre-existing EPDM roof areas, with new flashing and accessories meeting compatibility.

3.02 Exterior Walls

Overall, the masonry walls appear to be in functional order, including all areas of repair during the renovation in 2001.

Upon review of existing construction documents for the exterior envelope, it was discovered and determined that the existing wall assemblies are code compliant. As stated previously, the WUFI analysis would not help determine the cause of the mold in this instance, as the wall assemblies are code compliant. Therefore, the team was confident that the FLIR scans would produce a better outcome in locating any possible infiltrations or issues within the construction of the facade.

In February 2025 and June 2025, Existing Conditions & Recommendations

CONCRETE SLAB AND

SPANDREL BEAM

FOURTH FLOOR

34' - 4 1/8"

2001 EXTERIOR:

4" BRICK

2" AIR SPACE

AIR BARRIER

5/8" GYP. SHEATHING

3 5/8" MTL. STUD @ 24" O.C.

W/ 3" FOIL BACKED BATT

INSULATION

5/8" GWB

CONCRETE SLAB AND

SPANDREL BEAM

1956 EXTERIOR:

4" BRICK

AIR SPACE

7 5/8" CMU

THRU-WALL FLASHING W/

WEEPS @ 1'-4" O.C.

CAST STONE SILL

EXISTING CMU

COPPER SOFFIT PANEL

AND CONTINUOUS,

PRE-FORMED COPPER

J-CHANNELS

CONTINUOUS

TREATED 2" X 3"

WOOD SPACER W/

COPPER FACING

COPPER FASCIA

W/ 1 X 10 WOOD

BLOCKING

EXISTING 20 OZ COPPER STANDING

SEAM ROOF CONSTRUCTION:

ROSIN PAPER

30 LB ROOF FELT

ICE AND WATER SHEILD

5/8" PLYWOOD SHEATHING

5/8" GYP SHEATHING

1 1/2" METAL DECK

12" J STUD

2001 CONSTRUCTION

1956 CONSTRUCTION

FIRST FLOOR

8' - 6 3/8"

SECOND FLOOR

17' - 0 3/4"

2001 EXTERIOR:

4" BRICK

1 5/8" AIR SPACE

2" RIGID INSULATION

8" CMU

2 1/2" METAL STUD

6 MIL POLY VAPOR BARRIER

5/8" GWB

HORIZONTAL JOINT REINFORED

W/ ADJUSTABLE BRICK TIES @

1"-4" O.C. VERT.

CAST STONE SILL

THRU WALL FLASHING

SOLDIER COURSE BRICK

SOLDIER COURSE BRICK

THRU-WALL FLASHING W/

WEEPS @ 1'-4" O.C.

STEEL LINTEL

SHORT COURSE GROUTED SOLID

CAST STONE SILL

A101

3/4" = 1'-0"A101

2 EXISTING WEST WALL SECTION

RTH WALL SECTION @ NORTH WING

Typical Wall Section Detail

LaBella completed a Forward Looking Infrared (FLIR) scan of the building. A FLIR scan is a type of infrared imaging system that uses thermal imaging to detect heat emitted by objects. This was used to potentially provide an accurate assessment to the performance of the wall constructions, highlighting potential areas of air leakage, areas of infiltration or poor/lack of performance at the existing vapor barrier, locate poor insulation or gaps in the exterior envelope. The scans also were used to expose differences in cooling rates between wet and dry materials, revealing areas where water could potentially be leaking and absorbing; potentially leading to mold or other issues.

The FLIR scans of the exterior envelope show an overall warm surface, which could be due to the high exposure of sunlight, or suggesting potential heat loss or gain. Minor areas of temperature changes were evident in areas at the fourth floor level and above within the air cavities of the walls ,which showed as much cooler. This condition could also potentially be causing condensation on the face of the interior side of the exterior

MAKE UP AIR UNIT

UNIT VENTILATOR / FAN COIL

11 Typical Four Pipe System Soffit Fan Coil Unit

Typical HVAC plan add more images wall and interior room separating walls. Additional minor areas of heat differentiation were captured in areas at the windows, newer construction areas and at the interior walls meeting the exterior wall. This is likely due to the joints between construction materials, but also possible areas of minor air infiltration.

The exterior conditions of the scans proved to be somewhat inconclusive, because they indicated high temperature at all areas of additional parts of the building beyond Johnson Hall, even those of newer construction that had no issues of mold or moisture.

The interior FLIR scans revealed some areas of temperature change, possibly suggesting potential an area of air infiltration. With the outside walls maintaining a warm temperature and the air cavities and interior walls being much cooler, this can aid in the growth of condensation on the face of the interior walls.

Images from the FLIR scans can be found in the appendix.

3.03 Windows/Openings

All windows within the dorm room areas are operable single sash aluminum clad windows with cast stone sills. New drainable blade louvers have been installed at both original and renovated cavity wall locations.

There is no known infiltration or condensation at the windows.

3.04 Mechanical System

All mechanical systems in the building were reviewed including heating, cooling, ventilation, exhaust and make up air sources. Sizing of the fan coil units were checked to see if the function is creating a thermal break during temperature change.

In addition to this, all operating temperatures, including chilled water temperature, hot water temperature, system leaving air temperatures and existing control operations, space set points and schedules were reviewed.

The mechanical system is a typical system for a building of this type and age. The system serves a four pipe central hot and chilled water system that is distributed to air handling units and fan coil units throughout the building. Typically both hot and chilled water systems are not operated simultaneously.

There are two make-up air handling units within the attic/truss space that provide outdoor air for the ventilation requirements for the areas of the building with sleeping quarters.

There are also unit ventilators that provide conditioned air, including ventilation, for offices, and common areas, etc. with one sensor in the corridors that goes back to the unit in the attic. The student bedrooms utilize wall mounted fan coil units below the windows to condition each student room. The unit is controlled by adjusting a thermostatic valve on the water inlet pipe to the fan coil unit. The fan only runs when the thermostatic valve is not satisfied.

No outdoor air is brought into the building through the fan coil units.

The hallways and common areas all have small makeup air ducts with 100% outside air supplied, set to be conditioned for a certain desired amount of time. These areas utilize horizontal ceiling mounted fan coil units for room conditioning and operate based on wall mounted thermostats. These fans also run only when the thermostat is not satisfied.

There is an air handling unit that conditions the air for the lobby that also provides ventilation.

Many times equipment dedicated to ventilation or outside air is controlled to provide a set discharge air temperature that is neutral to the space condition, with different equipment providing the conditioned air to satisfy the space temperature.

The make-up air units providing ventilation air in the corridors operate to satisfy the space condition of the corridor. If the space does not call for cooling or heating because the space temperature is at the thermostat setpoint, the air delivered will not be conditioned (heated or cooled). This can often be problematic during the spring or fall when the temperature outside is at the thermostat setpoint, but the humidity can be very high.

It was also provided to the team that exhaust fans in the shower rooms do not appear to be pulling air.

Therefore, high humidity from the showers is able to remain in those spaces. Per the campus maintenance schedule it was determined that preventative maintenance is performed on the exhaust fans twice a year, but this is only on the exhaust units themselves. In the event a fire damper or another issue arises it will not be caught by the preventative maintenance process as they do not check vents for this process. This is something they rely on the end user to submit a work order for if someone notices an issue.

Since the unit ventilators do not have fresh air, they cool the space using current air and the fresh air comes from one point in the corridor.

The students control their own thermostats in the rooms, deciding on a temperature mixed with the surrounding temperatures of the other rooms and outside temperature, the corridor and how often the corridor air is entering the room when the door is open and whether the windows are open, allowing outside air in.

With a framed construction, the scans show that the outside walls are warm due to the outside temperature, but because of the stud framing, there are air cavities in the wall maintaining a cooler temp within the walls. This causes condensation on the walls, which could possibly be a variable in the cause of mold growth. With the condensation at the surface of the walls in conjunction with the heating and cooling effect, we are able to rule out that the wall temperature is not the issue as opposed to the inside room temperature.

At a mechanical standpoint, there is fresh air being brought in through ventilation in the corridor, although it is not treated unless the thermostat is calling for it to be. If the temperature in the building is acceptable and the conditions outside are 70 degrees but 80% humidity, then untreated air is being brought into the building at high humidity.

Occupancy and shower usage is also contributing to this added humidity, which is a factor in bringing excess moisture into the building. Upon review of the quantities of exhaust fans in the shower rooms and in the building, it was determined that it was a typical and acceptable amount.

Therefore that variable out was ruled out as the contributing condition to the mold and humidity issues.

02 Observations & Recommendations04 Appendix

02 Observations & Recommendations4.1 Existing Drawings

Exterior Elevations

Roof Construction Copper Standng Seam RoofCopper Standng Seam Roof Rosin PaperRosin Paper Ice and Water SheildIce and Water Sheild Plywood SheathingPlywood Sheathing Gyp SheathingGyp Sheathing

Metal DeckMetal Deck J StudJ Stud Air SpaceAir Space Batt InsulationBatt Insulation Vapor BarrierVapor Barrier

BrickBrick Air SpaceAir Space Air BarrierAir Barrier Gyp SheathingGyp Sheathing Mtl StudMtl Stud Foil Backed InsulationFoil Backed Insulation Gypsum BoardGypsum Board

BrickBrick Air SpaceAir Space

CMUCMU

18” Concrete18” Concrete DamperproofingDamperproofing Tile Foundation DrainTile Foundation Drain

2001 Wall Construction

1956 Original Wall Construction

Foundation

South Elevation

North Elevation

West Elevation

East Elevation

208 205 201

202204206

235 234

232 231

230 229

227228

220 219

209 207 203

135 134

132 131

117 111 109 108 107 105 103 101

110 106 102

128 127

123124

122 121

120 119

118 116 114

115 113

112 104

Existing First Floor Plan

Mold & Moisture Locations Green - Summer Season Red - Fall Season

460 SF

CHAPTER

223 SF

STORAGE

215 SF

LAUNDRY

341 SF

CHAPTER

274 SF

BOILER

A

C

B

D

255 SF

LIVING

473 SF

DINING

351 SF

SITTING

468 SF

LIVING

85 SF

BR

230 SF

KITCHEN

65 SF

STORAGE

117 SF

APT.

95 SF

APT.

72 SF

APT.

A

C

B

D

NN

FIRST FLOOR

SCALE: 1/16" = 1'-0"

BASEMENT

SCALE: 1/16" = 1'-0"

Existing Second Floor Plan

460 SF

CHAPTER

223 SF

STORAGE

215 SF

LAUNDRY

341 SF

CHAPTER

274 SF

BOILER

A

C

B

D

255 SF

LIVING

473 SF

DINING

351 SF

SITTING

468 SF

LIVING

85 SF

BR

230 SF

KITCHEN

65 SF

STORAGE

117 SF

APT.

95 SF

APT.

72 SF

APT.

A

C

B

D

NN

FIRST FLOOR

SCALE: 1/16" = 1'-0"

BASEMENT

SCALE: 1/16" = 1'-0"

Summer Season

Fall Season

Summer & Fall Season

432 431

427428

417 415 413 411 407 405 403 401

423424

418 416 414

410 406 404 402

331332

315 311

309 305

328 327

316318 314

308 307

303 301

Existing Third Floor Plan

460 SF

CHAPTER

223 SF

STORAGE

215 SF

LAUNDRY

341 SF

CHAPTER

274 SF

BOILER

A

C

B

D

255 SF

LIVING

473 SF

DINING

351 SF

SITTING

468 SF

LIVING

85 SF

BR

230 SF

KITCHEN

65 SF

STORAGE

117 SF

APT.

95 SF

APT.

72 SF

APT.

A

C

B

D

NN

FIRST FLOOR

SCALE: 1/16" = 1'-0"

BASEMENT

SCALE: 1/16" = 1'-0"

Existing Fourth Floor Plan

460 SF

CHAPTER

223 SF

STORAGE

215 SF

LAUNDRY

341 SF

CHAPTER

274 SF

BOILER

A

C

B

D

255 SF

LIVING

473 SF

DINING

351 SF

SITTING

468 SF

LIVING

85 SF

BR

230 SF

KITCHEN

65 SF

STORAGE

117 SF

APT.

95 SF

APT.

72 SF

APT.

A

C

B

D

NN

FIRST FLOOR

SCALE: 1/16" = 1'-0"

BASEMENT

SCALE: 1/16" = 1'-0"

Summer Season

Fall Season

Summer & Fall Season

Mold & Moisture Locations

02 Observations & Recommendations4.2 Exterior FLIR Scans

FLIR THERMAL SCANS

EAST ELEVATION - NORTH WING

Heat loss between windows at areas of new brick veneer

Heat loss shown at the fourth level where exterior walls were replaced in 2001

Thermal loss at window sills

Heat loss between windows at areas of new brick veneer

Potential thermal differentiation at windows, the fourth level and where exterior walls and brick veneer were replaced in 2001.

Thermal differentiation at windows and brick veneer.

NORTH ELEVATION - CORNER EAST WING

Thermal loss at window sills

Heat loss between windows at areas of new brick veneer

Heat loss shown at the fourth level where exterior walls were replaced in 2001

Possible heat loss between windows and areas of

Thermal differentiation at the fourth level and where exterior walls were replaced in 2001.

NORTH ELEVATION - EAST WING

Heat loss shown at the fourth level where exterior walls were replaced in 2001

Potential thermal differentiation/ heat loss at windows, the fourth level and where exterior walls and brick veneer were replaced in 2001.

EAST ELEVATION - EAST WING

Minor thermal change at the window locations where new brick infill is evident.

High thermal heat at facade

SOUTH ELEVATION - EAST WING

Similar exterior thermal heat conditions approaching other areas of the building.

SOUTH ELEVATION - ADDITION

19 25

Similar exterior thermal heat conditions approaching other areas of the building.

Similar exterior thermal heat conditions approaching other areas of the building.

Minor areas of heat loss shown at window sills

Still reflecting similar exterior thermal heat conditions approaching other areas of the building.

SOUTH ELEVATION - ADDITION

Heat loss shown at window sills and small areas of the facade

Similar exterior thermal heat conditions in remaining areas

WEST ELEVATION - ADDITION

Heat loss or thermal change shown at entire perimeter of windows and small areas of the facade

This could just potentially be the sill material during the cold temperatures.

NORTH ELEVATION - ADDITION

25 31

NORTH/WEST ELEVATION - ADDITION &

NORTH WING

NORTH/WEST ELEVATION - ADDITION &

NORTH WING

Thermal loss at window sills

Heat loss between windows at areas of new brick veneer

Heat loss shown at the fourth level where exterior walls were replaced in 2001

Potential thermal differentiation at windows, the fourth level and where exterior walls and brick veneer were replaced in 2001.

WEST ELEVATION - NORTH WING

Minor thermal loss at window sills in small areas

Minor heat loss between windows at areas of new brick veneer

Heat loss shown at the fourth level where exterior walls were replaced in 2001

Potential thermal differentiation at windows, the fourth level and where exterior walls and brick veneer were replaced in 2001.

WEST ELEVATION - NORTH WING

29 35

NORTH ELEVATION - NORTH WING

02 Observations & Recommendations4.3 Interior FLIR Scans

High heat at windows and exterior wall.

Thermal heat gain at windows. Heat loss appears to be at the interior separating stud walls.

Thermal heat gain shown above and below windows

Thermal heat gain where interior walls meet exterior

Some rooms had the AC units running and cooling the rooms while also open to the corridor, allowing air circulation. The surfaces on the walls separating the rooms were much cooler than the outside, causing the condensation on these walls.

Upper level scans illustrate the temperature changes within the cavities of the stud walls and ceiling against the exterior walls that are obsorbing exterior heat. These rooms apeared to have more evidence of mold and moisture.

02 Observations & Recommendations4.4 Photo Documentation

Moisture and mold spots at the ceiling and soffit

Mold at Window Soffit

Bubbling paint image

Mold at the Tackboards

Mold at the Tackboards Bubble In the Paint at

Interior Walls

Mold at the Tackboards

Moisture at Interior Dorm Room Walls

Mold at Window Soffit

Moisture at Corridor Wall

02 Observations & Recommendations4.5 Cost Estimate

SUNY Oswego Date: 9/11/2025

Johnon Hall Mold and Moisture Study

LaBella Project No. 2221727.12

Opinion of Probable Cost

Item Description Quantity Cost Unit Sub-Total

General

Conditions, Contingency &

Escallation Total

1.00 Thermostats

1.01 Sensor from thermostat to window

Window controls

Plus replacement of thermostats

500.00$ ea 68,000.00$

1.02 Misc. wall patching/painting 1 5,000.00$ lump sum 5,000.00$

Option Total: 73,000.00$ 38,690.00$ 111,690.00$

2.00

Dehumidification Unit

(dehumidification unit at each ventilation unit in the attic)

2.01 Units 2 130,000.00$ ea 260,000.00$

2.02 Penetration for Install (Roof or Wall TBD) 2 10,000.00$ ea 20,000.00$

2.03 Power Supply 1 10,000.00$ ea 10,000.00$

2.04 Misc. Metals for support of each unit 2 3,000.00$ ea 6,000.00$

2.05 Ductwork Modifications 1 5,000.00$ lump sum 5,000.00$

Option Total: 301,000.00$ 159,530.00$ 460,530.00$

3.00 Tackboards

3.01 Replace the existing tackboards in all

students rooms with a rubberized, non-porous, tack surface.

300.00$ ea 81,600.00$

Option Total: 81,600.00$ 43,248.00$ $ 124,848.00

4.00

Reheat Coils

(electric reheat coil downstream of each ventilation unit in the attic)

4.01 Duct heater 2 500.00$ ea 1,000.00$

4.02 Power Supply 2 10,000.00$ ea 20,000.00$

4.03 Ductwork Modifications 2 15,000.00$ ea 30,000.00$

4.04 Controls 2 25,000.00$ ea 50,000.00$

4.05 Additional Labor 1 10,000.00$ lump sum 10,000.00$

Option Total: 111,000.00$ 58,830.00$ 169,830.00$

Note: All construction costs include include the following; Contractor General Conditions (12%), Design Contingency (15%), Construction Contingency (15%), Bid Contingency (5% - market volatility), Escallation (6% - midpoint of construction 2026). This opinion of probable cost does not account for escallation of greater than one year or extraordinary inflation due to unpredictable market conditions or tariffs.

Phase 1

Phase 2

Phase 3