WM Building Envelope Consultants, LLC Columbia/Charleston wmbeconsultants.com Page 1

Columbia Area Office Charleston Area Office 1611 Chapin Road 217 N. Live Oak Dr Chapin, SC 29036 Moncks Corner, SC 29461

(803) 260-4532 (843) 499-2756

(803) 422-7493 (352) 397-8208 wmbeconsultants.com

Questions and Answers

Project: Greenville County Animal Care Selective Roof Replacement

WMBE Project Number: 2025-210

1. Question: What felt system is required over the roof decks where the shingle roofs are being replaced?

A. Answer: Shingle system Manufacturers waterproof synthetic felt to prevent rain intrusion and ice damming.

2. Question: What ice and water shield system is required at the ridge, hips, valleys, eave, and penetrations where the shingle roofs are being replaced?

A. Answer: Shingle system Manufacturers full self-adhered underlayment, "peel-and-stick," adhesive-backed waterproofing membrane that sticks directly to the roof deck, to prevent rain intrusion and ice damming.

3. Question: In the roof edge details, it mentions covering the drip edge with a strip of ice and water. Are we able to cut the ice water to fit that dimension, as long as we are the minimum 4" beyond the top of the drip edge?

A. Answer: A full sheet of ice and water shield will be installed.

4. Question: Are the skylights being removed at the low slope roof area?

B. Answer: Yes, and deck shall be repaired to match existing or with heavy gauge steel plate to be approved during the submittal process.

Columbia/Charleston wmbeconsultants.com Page 2

5. Question: What is required at shingle roof areas that has the insulation nail base insulation board installed?

A. Answer: When the existing shingles and felt system is removed and the existing nail base insulation board is exposed an additional five (5) fasteners will be installed per nail base insulation board with plates and fasteners long enough to penetrate the metal deck rib one inch. Additionally, a unit price for replacement per board to be provided in proposal.

6. Question: Does hazardous material exist at low slope roof locations at the duct work and mechanical units?

A. Answer: Cost associated with hazardous material at duct work Contractor shall include in proposal provided. Contractor is responsible for testing prior to units and duct work being raised and reworked for the new low slope taper roof system.

7. Question: What is required regarding safety during the project?

A. Answer: Overhead protection will need to be provided at all ingress and egress points around the building. This will require scaffolding and plywood be at each door location at areas of work extending out a minimum of eight feet. All OSHA requirements are to be followed.

8. Question: Is chain link fencing necessary and required around the lay down area?

A. Answer: Yes.

9. Question: Is any interior protection required inside the building?

A. Answer: Yes, it is the contractor’s responsibility to protect all interior conditions under areas of work.

10. Question: Is cleaning of the grounds and interior the responsibility of the Contractor?

A. Answer: Yes. Clean up of all areas affected by roof work will be the responsibility of the Roofing Contractor.

11. Question: Is all the sheet metal being replaced with new on the low slope and shingle roof replacement locations?

A. Answer: Yes. 24 gauge, Kynar Prefinished metal installed.

12. Question: Is shop fabricated sheet metal acceptable for use for detail work?

A. Answer: Yes, must comply with ES1 standards.

Columbia/Charleston wmbeconsultants.com Page 3

13. Question: Is .040 Aluminum or galvalume required for metal work? Is either prefinished Steel or prefinished Aluminum acceptable for metal details?

A. Answer: 040 aluminum or 24 gauge galvalume is acceptable for metal work.

14. Question: Is the metal work to be attached to cleats and be per ES-1 Requirements?

A. Answer: Yes, ES1 requirements will be completed and will be reviewed in the submittals and on site during the installation mockup.

15. Question: What is the metal color for new metal work being completed?

A. Answer: Color will be chosen by the Owner prior to metal being ordered.

16. Question: Are all buildings with shingle roofs to have new gutters and downspouts, drip edge, and fascia metal around all sides of the roof eave?

A. Answer: Yes. Rake and eave condition shall be a two piece edge metal equal in width.

17. Question: Is a seamless gutter to be installed?

A. Answer: Yes. 6” inch gutters to be installed with 4x5 inch downspouts.

18. Question: What is required at the wood supports?

A. Answer: Prefabricated supports are to be installed. Wood supports will not be acceptable.

19. Question: Which curbs on the low slope roof area are to be raised?

A. Answer: All equipment shall raised to the 8-inch minimum finished height from the top of the finished new roof system. This includes any associated gas lines, electrical , controls, etc.

20. Question: If materials are stored on the grounds or roof what is required?

A. Answer: All materials need to be properly stored and covered from elements of weather. All stored materials need to be properly secured, weighted, or tied into place to prevent moving from winds.

21. Question: At the low slope roof area are all roof drains to be replaced with new?

A. Answer: Yes, along with new heavy duty multiple band ferncos.

22. Question: What is the extent of work is required at the roof drain replacement locations?

Columbia/Charleston wmbeconsultants.com Page 4

A. Answer: All drains and/or scuppers (primary and overflow) will be raised to accommodate new roof insulation height. All roof drains are to have all new cast iron drain bowls, clamping rings, and strainers installed. Threaded connections are required to piping below at all locations. New stainless steel bolts and washers are to be used. The roof drain and associated piping installed shall be insulated. Scuppers require clad metal scuppers.

23. Question: Is flood testing of roof drains required?

A. Answer: Yes, all roof drains are to be flood tested once all new components have been installed. Flood testing is to include plugging the drain and testing the roof drain bowl and pipe connections.

24. Question: When can drain work take place?

A. Answer: After hours and on weekends.

25. Question: What is required if existing roof drains are clogged prior to work starting?

A. Answer: Contractor shall have all roof drains and overflow drains inspected prior to work and shall ensure all roof drains and overflow drains are free flowing. All clogged drains are the responsibility of the Contractor.

26. Question: Is taper insulation required at the low slope roof area?

A. Answer: Yes, as noted in specifications and drawings. Taper edge shall be installed at transition at all tapered crickets.

27. Question: Are new wood nailers required at all perimeter locations and penetration locations?

A. Answer: Yes, to match new insulation height and to obtain the minimum flashing height of

8” inches at penetrations.

28. Question: Is a licensed electrician and or plumber to be used and coordinated by the Contractor for any HVAC work to raise units and any plumbing work at roof drains?

A. Answer: Yes.

29. Question: Is the shingle rake and eave edge condition to be two-piece condition?

A. Answer: Yes.

30. Question: Is standing seam joints required for the coping at the low slope roof area at the two small parapet walls?

A. Answer: Yes.

Columbia/Charleston wmbeconsultants.com Page 5

31. Question: When the Single Ply is installed what will be required for cleaning at the end of the project?

A. Answer: The Contractor will be responsible for cleaning the new roof system with recommended product per the system Manufacturer. No pressure washing / no abrasive methods of cleaning will be acceptable. Hand cleaning will include squeegee, mops, rags, etc.

32. Question: Is a Contractor warranty to be provided by the Contractor at the end of the project?

A. Answer: Yes, 3 year workmanship warranty is required on all work completed.

33. Question: What type of Manufacturer Warranty is required?

A. Answer: Lifetime Warranty, see Warranty requirements on drawing specification sheet.

34. Question: When the project laydown locations are selected and approved by the Owner, how are the grounds to be repaired?

A. Answer: Any concrete or paving will be repaired to match existing. Any grass locations will be repaired with sod to match existing grounds.