B825_-_RFI_2_DOCUMENT_AMV.pdf

W912JB-19-B-5010

BLDG. 825 ROOF REPAIR

RFI’S DOCUMENT 2

1.The specifications call for work to be performed on the Barrel Vault Roof Area. There are two Barrel

Roof Areas at the building entrances and a vaulted skylight system on the middle roof area of the facility where the new EPDM roof is to be installed. Is the Barrel Vault Roof Area the Vaulted Skylight area on the Center Roof area that is receiving the new EPDM roof system or is it the two barrel roof areas by the building entrances?

Paragraph B covers roof penetration curbs, the vaulted skylight curb is to be included in this grouping.

Paragraph F. covers the barrel roof assemblies by the entrances.

2. It also calls out for the ridge, rake and pressure bar pieces on this roof area to be removed and new rubber gaskets to be installed at the ridge, rake and etc., then the ridge, rake and pressure bar pieces are to be reinstalled. Are these pieces the skylight mullions and gaskets that are on the center vaulted skylight area? If so we have to get a skylight subcontractor or glazing contractor involved with this work as roofers do not perform this scope of work.

This would be the skylight

C. Remove the metal pressure plates and trim pieces along the ridge, eaves, and rakes, install new gaskets and sealant components surrounding the glazing, and reinstall the metal components.

3. I also know that the roofing manufacturers have not supplied material pricing for this project as of yet due to the fact that the rigid insulation that is required to be installed between the seams in the existing

Standing Seam Roof System has to be custom cut for this project. This is not a stock item for the manufacturers. With the revised bid date we might not be able to acquire the pricing as required.

Understood. Please do your best to obtain pricing.

4. It also needs to be noted that EPDM membrane comes in two colors only Black and White. It cannot be manufactured in other colors. The specification states colors are to match the existing standing seam roof system.

Understood. I will coordinate with the base architect to see which material color is approved, but either black or white EPDM roof material will be accepted.

5. The specification also states that the existing roof curb penetrations are to be flashed with ANDEK

Coating Products. IS this for all the roof curbs on the entire facility or just for the area where the new

EPDM roof system is to be installed? The roof curb penetrations on the EPDM roof area should be flashed with the same EPDM roof membrane as the new roof system. Flashing with ANDEK Roof Coating

Products will not be accepted by the EPDM manufacturer’s and these will not be included under the manufacturer’s total system warranty.

SOW has listed ANDEK (or similar elastomeric waterproofing coating); however, if the EPDM roof manufacturer has warrantable flashing details which will be covered under warranty, these are preferred. Should deviation from the SOW allow for a warrantable solution please provide suggested solution and warranty information with the bid. If a warranted flashing detail is not available from the EPDM manufacture, Andek is to be used.