sAttach 7 - Roof Inspection Report 12-07-2020.pdf

BUILDING 374 NON-INTRUSIVE

ROOF INSPECTION

FOREIGN DISEASE-WEED SCIENCE

RESEARCH UNIT

1301 DITTO AVENUE

FORT DETRICK, MD 21702

PREPARED FOR:

Mr. Christopher Wilson Engineering Project Manager US Department of Agriculture 10300 Baltimore Avenue Bldg. 003 Rm 320 Beltsville, MD 20740

A WOMAN OWNED SMALL BUSINESS

PROFESSIONAL ROOF

CONSULTANTS

423 McFarlan Road, Suite 100 Kennett Square, PA 19348 Tel.: 610-558-4000 Fax: 484-732-7978 Website: www.teamrri.com

PREPARED BY:

ChrisM.Wilson Text Box 10/21/2020 - Inspection 10/30/2020 - Report Delivered 12/07/2020 - Revised Conclusion: (See p.4) Recommendations in order of priority (CMW)

Building 374 Non-Intrusive Roof Inspection

Foreign Disease-Weed Science Research Unit 1301 Ditto Avenue, Fort Detrick , MD 21702

Building 374

Roof Assessment

TABLE OF CONTENTS

- Inspection Form 1

- Inspection Form 2

- Findings and Observations 3

- Conclusions 4

- Photo Documentation 5-45

ChrisM.Wilson Text Box Revised 12/07/2020 (CMW)

1301 Ditto Avenue, Fort Detrick , MD 21702

FINDINGS

On 10-21-2020 personnel from Roofing Resources Inc. conducted a visual non-destructive roof inspection of Building 374 located on the Fort Detrick base in Frederick, Maryland. The weather conditions were sunny with mid 70 degree temperatures. The pitch of this roof is 5” in 12” and was easily walked by our inspection team of two, Bill Johnson and Jason Speck. The construction is a wood deck, underlayment, and a 3 tab self-sealing asphalt shingle. The typical life-span of this system is approximately 25 years.

OBSERVATIONS

The asphalt shingle roof on Building 374 is in poor condition with the followings issues identified during our investigation:

• Numerous repairs throughout the entire roof

• Excessive amount of nail pops and exposed fasteners which may allow for moisture intrusion

• Broken and cracked asphalt shingles

• Missing asphalt shingles likely from high wind events

• Debris in gutter and down leaders

• Dented down leaders where no vehicle protection is provided

• Rear section gutters appear undersized as well as the down leaders

• Deteriorated sealant at duct support hard points and roof penetrations

• A few open holes were noted where the underlying decking was exposed

• Moisture on brick wall as a result of holes in the asphalt shingles near the eave

• Interior driven screws puncturing the asphalt shingles presenting a major fall and safety hazard to personnel walking on the roof surface.

• Poor nailing techniques were identified in many areas

• The self sealing function of the aged asphalt shingles is poor and shingle blow-off is a cause for concern in high wind events

• Many of the hip caps were cracked or broken

• We noted a vent stack pipe was full of water

• A 10’ section of metal fascia is missing

• The wear surface on most of this roof is in poor condition from foot traffic

• Guy wire attachment fasteners are not properly sealed

• The parapet wall detailing is in question on the back side of this roof. We noted several loose shingles at the eave.

• The rain shield on the stack is badly rusted

Please review the photo documentation provided in this report as visual backup to our observations on the 10-21-2020 inspection.

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1301 Ditto Avenue, Fort Detrick , MD 21702

CONCLUSIONS

♦ Roofing Resources, Inc. (RRI) completed a visual evaluation of the existing roof conditions at Building #374 located at Fort Detrick, Frederick, Maryland, The condition of the roof is poor and we consider it RED + as per the DCR Direct condition Rating chart. The average life-cycle for a 3 tab asphalt shingle roof is approximately 25–years. The roof on Building 374 is at the end of it’s expected life-cycle and will need replacement within the next 2 years.

We recommend the following: (Revised 12-07-2020)

♦ 2020 Initial repairs be conducted as soon as possible to the major issues pointed out in our

Observations section.

1. Replacing missing and damaged shingles in kind

2. Repairing all holes in roof to prevent damage to interior and wood decking

3. Sealing exposed nail pops

4. Cutting protruding screws and sealing properly

5. Sealing 3 tab shingles where loose to prevent blow off during high wind events

6. Repair/replace damaged hip caps as needed

7. Inspect all roof top mounted equipment sealant and remove and replace as needed

8. Seal all guy wires as needed

9. Rust paint any rusting roof top equipment or flashings

♦ 2022 Remove existing asphalt shingle roof system to the deck and replace entire system with Owner approved system.

1. At this time all wood decking to be inspected and repaired/replaced as needed to provide a proper substrate for the new roof system

2. The gutter and down leader system should be replaced and upgraded as necessary to meet requirements for proper drainage

3. All sealant on roof top units to be removed and replaced in kind during the reroofing process

4. Exterior wood trims should be inspected and repaired/replaced as necessary

5. All exterior soffits and fascia replaced with new commercial grade materials during the reroofing project

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