RFB932200-01 - Addendum #2.pdf

IMHI Reynolds Building Partial Roof Replacement Independence, Iowa 50644

DAS#9322.00

RFB932200-01

Addendum #2

ADDENDUM #2

Project Name:

DAS#9322.00

RFB 932200-01

Dated: May 5, 2023

This Addendum forms a part of the bidding and contract documents. This Addendum supersedes and supplements all portions of the original bidding and contract documents dated April 6, 2023, with which it conflicts.

ACKNOWLEDGE RECEIPT OF THIS ADDENDUM IN THE SPACE PROVIDED ON THE

BID FORM. FAILURE TO DO SO MAY SUBJECT THE BIDDER TO

DISQUALIFICATION.

1. BID CLARIFICATIONS

A. Note that built-in gutters have vertical gutter dams. (See attached photos) All gutter dams are to be wrapped with EPDM and flashing accordingly with EPDM.

B. Most built-in gutters were originally lined with metal. It is unknown if these gutters are lined with metal or not. Existing metal can be left if it is attached securely and can be adhered to with membrane glues. If not, remove the metal during demolition. Verify manufacturer’s requirements.

2. SPECIFICATIONS

A. Overhead protection will be required at all entrances when work is being performed overhead.

3. DRAWINGS

A. Sheet A3.0. Detail 4/A3.0 - High Roof Gutter Detail. Delete TPO and change to EPDM.

4. QUESTIONS AND CLARIFICATIONS

A. Is a 2-year workmanship warranty going to be sufficient for the gutter areas as no manufacturer will warranty the roof in the gutters? The built-in gutters may not be covered by some manufacturer’s warranties. Please note in your bid if you are able to provide a manufacturer’s warranty for the built-in gutters. All bidders are asked to provide a Two Year Installer’s Warranty for the built-in gutters. The main upper roofs and dormer roofs are to be covered under the 25 year warranty as specified. The attached Two Year Installer’s Warranty is to be completed for the built-in gutters.

Independence, Iowa 50644

DAS#9322.00

RFB932200-01

B. Due to the nails backing out of the substrate is adding a coverboard of .5” hd iso to the bid acceptable as we are not comfortable to glue strait to the existing substrate? A> Ed Any loose nails should pull with the existing membrane removal. Provide cover board only if recommended or required by your manufacturer to meet the 25 year warranty.

C. Drain inserts were our initial thoughts on how to make the upper 7 roofs warrantable but we believe we would have a hard time installing them in a manner that would not create a dam effect so we would propose the use of shop fabricated drain inserts? A> All upper roof drains and built-in gutter roof drains are EPDM flashed holes through the sheathing that connect to a round metal downspout that is concealed inside the roof edge cornice metal. See the attached photo sheet. Provide a retrofit roof drain insert or flash into the downspout pipe with a warrantable membrane flashing detail.

D. In the bid documents it calls for 10 million umbrella coverage. Is this the correct amount for this job?? A> In the specifications book this value is explained in the Sample Consensus Docs 802 – Section10.2.2.

E. Page A3.0, Detail 4 – High Roof Gutter Detail, has the membrane listed as TPO instead of EPDM. Is this Correct? A> Change to read EPDM.

F. On the roof plans there are down spouts called out, which are internal. Is there a detail for these down spouts? A> All upper roof drains and built-in gutter roof drains are EPDM flashed holes through the sheathing that connect to a round metal downspout that is concealed inside the roof edge cornice metal. See the attached photo sheet. Provide a retrofit roof drain insert or flash into the downspout pipe with a warrantable membrane flashing detail.

G. May contractors not at the pre-bid meeting schedule a site visit? A> Yes, you can visit the site by making arrangements with Mike Cook the facility POM by calling him at (563) 608-

5. ATTACHMENTS

A. ROOF DRAIN PHOTOS – 1 pg.

B. Two Year Installer’s Warranty. – 2 pgs.

Total Pages this Addendum: 5 pgs.

END OF ADDENDUM

Roof Drain Photos Addendum #2

IOWA DEPT. OF ADMINISTRATIVE SERVICES DAS PROJECT: 9322.00

DHS IMHI REYNOLDS BUILDING PARTIAL ROOF REPLACEMENT GENESIS PROJ: 2204

ETHYLENE-PROPYLENE-DIENE-MONOMER (EPDM) ROOFING 07 5323

1.1 ROOFING INSTALLER'S WARRANTY

A. WHEREAS _______________________________ of ___________________________, herein called the "Roofing Installer," has performed roofing and associated work ("work") on the following project:

1. Owner: (Name of Owner) ____________________________________________

2. Address: (Insert address) _____________________________________________

3. Building Name/Type: _____________________________________________

4. Building Address: _____________________________________________

5. Area of Work: (Built-in Gutters Only.)

6. Acceptance Date: (Date of Substantial Completion) ________________________

7. Warranty Period: 2 years from the date of Substantial Completion.

8. Expiration Date: _______________________________________

B. AND WHEREAS Roofing Installer has contracted (either directly with Owner or indirectly as a subcontractor) to warrant said work against leaks and faulty or defective materials and workmanship for designated Warranty Period, C. NOW THEREFORE Roofing Installer hereby warrants, subject to terms and conditions herein set forth, that during Warranty Period he will, at his own cost and expense, make or cause to be made such repairs to or replacements of said work as are necessary to correct faulty and defective work and as are necessary to maintain said work in a watertight condition.

D. This Warranty is made subject to the following terms and conditions:

1. Specifically excluded from this Warranty are damages to work and other parts of the building, and to building contents, caused by:

a. lightning;

b. peak gust wind speed exceeding 90 mph.

c. fire;

d. failure of roofing system substrate, including cracking, settlement, excessive deflection, deterioration, and decomposition;

e. faulty construction of parapet walls, copings, chimneys, skylights, vents, equipment supports, and other edge conditions and penetrations of the work;

f. vapor condensation on bottom of roofing; and

g. activity on roofing by others, including construction contractors, maintenance personnel, other persons, and animals, whether authorized or unauthorized by Owner.

IOWA DEPT. OF ADMINISTRATIVE SERVICES DAS PROJECT: 9322.00

DHS IMHI REYNOLDS BUILDING PARTIAL ROOF REPLACEMENT GENESIS PROJ: 2204

ETHYLENE-PROPYLENE-DIENE-MONOMER (EPDM) ROOFING 07 5323

2. When work has been damaged by any of foregoing causes, Warranty shall be null and void until such damage has been repaired by Roofing Installer and until cost and expense thereof have been paid by Owner or by another responsible party so designated.

3. Roofing Installer is responsible for damage to work covered by this Warranty but is not liable for consequential damages to building or building contents resulting from leaks or faults or defects of work.

4. During Warranty Period, if Owner allows alteration of work by anyone other than Roofing Installer, including cutting, patching, and maintenance in connection with penetrations, attachment of other work, and positioning of anything on roof, this Warranty shall become null and void on date of said alterations, but only to the extent said alterations affect work covered by this Warranty. If Owner engages Roofing Installer to perform said alterations, Warranty shall not become null and void unless Roofing Installer, before starting said work, shall have notified Owner in writing, showing reasonable cause for claim, that said alterations would likely damage or deteriorate work, thereby reasonably justifying a limitation or termination of this Warranty.

5. During Warranty Period, if original use of roof is changed and it becomes used for, but was not originally specified for, a promenade, work deck, spray-cooled surface, flooded basin, or other use or service more severe than originally specified, this Warranty shall become null and void on date of said change, but only to the extent said change affects work covered by this Warranty.

6. Owner shall promptly notify Roofing Installer of observed, known, or suspected leaks, defects, or deterioration and shall afford reasonable opportunity for Roofing Installer to inspect work and to examine evidence of such leaks, defects, or deterioration.

7. This Warranty is recognized to be the only warranty of Roofing Installer on said work and shall not operate to restrict or cut off Owner from other remedies and resources lawfully available to Owner in cases of roofing failure. Specifically, this Warranty shall not operate to relieve Roofing Installer of responsibility for performance of original work according to requirements of the Contract Documents, regardless of whether Contract was a contract directly with Owner or a subcontract with Owner's General Contractor.

E. IN WITNESS THEREOF, this instrument has been duly executed this ___________ day of

Name: (print) _______________________________________

Authorized Signature: _______________________________________

Title: _______________________________________