Attachment_4_Site_visit_notes_and_register.pdf

RFQ #140P8319Q0037:Re-roof buildings Fort Vancouver NHS Attachment 4: Site visit notes

Roofing Contractor Site Visit | Q&A Recap | July 1, 2019

• Sq ft provided is a rough estimate; contractors are expected to perform their own more-precise measurements.

• Do not dig in ground or otherwise disturb the soil without escalating for approval; Fort Vancouver NHS (FOVA) is a sensitive archeological site.

• Any alterations and materials should be replaced with “In Kind” materials; site is a Historic District.

• Dumpster and laydown locations will be marked by NPS; contractor shall minimize traffic throughout the area.

• Grass areas are accessible for vehicle use within reason and without causing ground disturbance.

The landscape should be unmarred by use. Protection using plywood sheets is acceptable.

• Quotes are due by 2:00 pm on July 16th. Review instructions in RFQ for contents and submission methods.

Information that applies to all buildings

Q. Will this building be unoccupied during construction?

A. All buildings will be unoccupied during roofing work.

Q. Are there layers or levels of roofing; how many?

A. The NPS does not have this information.

Q. Is there dry rot in the roof sheathing?

A. The NPS does not have this information, but if any dry rot is present, the contractor will need to replace damaged sheathing prior to the new roof being installed.

Q. What next steps should the contractor take if dry rot is found and exposed?

A. The NPS Inspector will inspect roof decking with contractor to look for any dry rot.

Q. How will the cost to repair roof sheathing dry rot be determined?

A. Refer to process in Attachment 1. Note that the firm fixed contract price includes up to 5% sheathing replacement. If rot is more extensive than 5% of any building’s existing sheathing, we will negotiate an equitable adjustment to the contract price for the excess quantity.

Q. What is the paint color?

A. Match existing.

Q. What types of roofing are being used; are they mentioned in the specifications?

A. Yes, refer to Section 073113 Asphalt Shingles.

Q. Are there restrictions on dumpster placement; can they be placed on grass?

A. COR will work with contractor to identify a logical and close location for dumpster.

Q. Will public access need to be maintained during work?

A. Ensure a safe perimeter during roofing work.

Q. Confirm the time of completion?

A. The performance period (defined as starting when Notice to Proceed is issued to substantial completion) is 90 days for all buildings.

Q. Table of Contents (TOC) in Attachment 1, Statement of Work, lists several sections that are not present in the document.

A. The TOC is wrong; all necessary sections are included in the document.

Building Stop #1 | P-786

Q. Are there details showing how to treat metal pipe, chimney, and roof penetrations?

A. No details or drawings are provided. Refer to Section 073113, Part 2.4 Metal Flashings.

Q. Are existing ventilators to remain; how is this penetration treated?

A. Yes, existing ventilators to remain. Use industry standard treatment for penetration unless Attachment 1 provides a specific method.

Q. Will the chimneys be left with existing flashing or need new counterflashing?

A. Refer to Section 073113, Part 3.5 Installation – Metal Flashing and Accessories. “At chimney. Recess new primary step flashing sections into masonry joints.”

Q. What are the details and specs of the gutters?

A. Match existing size and style.

Q. Is new sheathing being applied over existing roof sheathing?

A. Existing sheathing (assumed to be horizontal 1x6) should be retained and new ¾” plywood installed directly over.

Q. Will original sheathing be usable?

A. Existing sheathing (assumed to be horizontal 1x6) should be retained and new ¾” plywood installed directly over.

Q. Do all roofs have “shingle venting,” should we use e-vents?

A. All roofs to receive venting at ridge and above attic line. Refer to Section 073113, Part 3.7 Installation

– Shingle Vents.

Building Stop #2 and #3 | P-752 and P-753

Q. Will it be necessary to integrate counterflashing on the roof and siding? (Brickwork, esp. around chimney, appears to need counterflashing and tuck-point.)

A. Refer to Section 073113, Part 3.5 Installation – Metal Flashing and Accessories.

Q. Should the flashing between the roof and wall junctions (i.e. at sheds and porches) match existing flashing, or should new flashing be integrated into the existing siding?

A. Refer to Section 073113, Part 3.5 Installation – Metal Flashing and Accessories.

Q. Should the contractor match existing roll roofing on the porch at building P-752, or match the building shingles?

A. The porch on 752 should be asphalt shingle.

Q. Will the chimney of P-752 need repairing?

A. Repointing the entire chimney is not in scope. However, refer to Section 073113, Part 3.5 Installation

– Metal Flashing and Accessories.

Building Stop #4 | P-722

Q. Is this building occupied?

A. Yes, currently occupied, but expected to be vacant when roofing work takes place.

Q. Will painting take place before or after re-roofing construction? (To mitigate damage to paint while working and caulking the roof.)

A. Painting may be occurring at the same time.

Q. The gutters on this building appear to be newer; what type of gutters are noted in the contract?

A. Replacement in kind.

Q. Is this the only building on the tour to be painted?

A. Yes.