12 Miss. Code. R. 3-20-400.3

Current through December 10, 2024

Section 12-3-20-400.3 - THE POLICY

In an attempt to alleviate various problems regarding low-sloping roofs and to standardize plans and specifications, the Bureau as the Owner has set forth the following policy for roofing new and existing buildings. The following guidelines delineate the Bureau's Roofing Policy and related forms.

Roof Policy Elements

* Roof Requirements

* Roof Guarantee

* Roof Slopes

* Roof Substrate

* Roof Insulation

* Roof Top Equipment

* Flashings

* Roof Planning and Surveying

* Roofing Asbestos Testing

* Roofing Bid Documents

* Quality Assurance

* Prebid Roofing Conference

* Preroofing Conference

* Roof Inspection

* Roof Bond

A.ROOF REQUIREMENTS

1. The following three (3) types of roofing systems are approved. Any other type of roof system must have written approval from the Owner:

a. A four-ply fiberglass and bitumen hot-mopped applied built-up roofing system.

b. A modified bitumen roofing system shall be hot-mopped applied.

c. A single-ply polymeric roofing system including EPDM (ethylene propylene diene monomer); SPE (chlorosulfonated polyethylene); and CPA (copolymer alloy) can be loose laid, adhered or mechanically attached.

2. It shall be the responsibility of the Professional to choose the type of roof which will best suit the Project and to specify that the roof be furnished, installed and guaranteed as a system which may include vapor retarders, insulation, fasteners, bitumen, felts, membranes, flashings and/or other items which are required by the proposed design. All materials used in the roofing system shall be specified to meet the latest available American Standards of Testing Materials (ASTM) for individual components of the roofing system. Certification from the roofing Manufacturer shall be furnished at the pre-roofing conference as well as when the material is delivered to the job site.

B.ROOF GUARANTEE

1. The four-ply built-up roof system and the modified bitumen system shall have a twenty (20) year unlimited Manufacturer's guarantee for water tightness covering material and Workmanship on the entire system.

2. The single-ply polymeric system shall have a fifteen (15) year unlimited Manufacturer's guarantee for water tightness covering material and Workmanship on the entire system.

3. In addition to the above guarantee, the General Contractor and/or the Roofing Contractor shall provide a written guarantee agreeing to keep the roof free of leaks for a period of two (2) years beginning at the time of acceptance of the Project by the Owner.

C.ROOF SLOPES

1. All roof construction on new buildings shall have a built-in minimum slope to drains or eaves of a quarter of an inch (1/4") per foot.

2. All replacement roofs shall have a minimum slope of a quarter of an inch (1/4") per foot where feasible, however in no case shall the slope be less than one sixteenth of an inch (1/16") per foot.

D.ROOF SUBSTRATE

1. The type roof system selected shall be compatible with the substrate and shall be approved by the roofing material Manufacturer.

E.ROOF INSULATION

1. Roof insulation shall be of the type approved and guaranteed by the roofing Manufacturer for the roof assembly in which it is to be used. The required minimum "R" value shall be specified.

2. On replacement roof projects which do no have a sloping deck, tapered insulation shall be used where feasible.

F.ROOF TOP EQUIPMENT

1. On all new construction, the installation of equipment on roofs shall not be permitted. Where equipment must be installed on a roof, such as kitchen exhaust hood, it shall be approved by the Owner and shall be installed in accordance with the National Roofing Contractors Association (NRCA) design details which shall be such that reroofing can be easily accomplished without the removal of the equipment.

2. Where equipment must be periodically serviced, easy access and traffic pads shall be provided.

G.FLASHINGS

1. Flashings shall be included in the Roof Warranty and shall be applied by an applicator approved by the Manufacturer of the roofing material.

2. In reroofing projects existing metal flashings which are not to be replaced may be exempted from the Warranty.

H.ROOF PLANNING AND SURVEYING

1. A report shall be prepared by the Professional which shall include the following items:

a. New Construction

(1) Fire Code protection requirement and the required hourly fire resistance rating of the assembly

(2) UL roof assembly number

(3) Type of roofing and flashing system recommended with justification for its use

(4) Roof Area

(5) Cost Estimate

b. Existing Construction

(1) Determination of roof construction (core where necessary)

(2) Asbestos survey and testing

(3) Visual roof analysis inspection

(4) Moisture analysis

(5) Code requirements (UL roof assembly number, if applicable)

(6) Provide Class A type roof, or match existing roof

(7) Recommendations by the Professional as to repair or reroof

(8) Cost Estimate

c. The necessary forms to complete the roof analysis and inspection are included in Appendix 400.

2. Two (2) copies of this report will be submitted to the Bureau.

I.ROOFING ASBESTOS TESTING

1. All testing should be conducted and performed as stated in the ACM Abatement Policy. [See Section 400.4.]

J.ROOFING BID DOCUMENTS

1. For new construction and complete tear-off of existing roofs, the Professional shall specify in the Bid Documents the roof as a system and shall include all items which are to be covered under the Roof Warranty.

2. When required, the Professional shall state in the Section, Instructions to Bidders, that upon award of Contract the General Contractor and/or Roofing Contractor shall provide the Owner with the installed price of the roofing system. If more than one (1) building is involved, each building shall be listed separately.

3. Items to be included/stated in Bid Documents:

a. Prebid Conference: This conference is to be set at least seven (7) days prior to the bid opening. The date is to be stated in the specifications.

b. Installer Submittals: Within five (5) days after bids have been opened, the low Bidder shall provide the Bureau with a letter from the Manufacturer of the roofing system stating that the low Bidder is an authorized installer. The letter should also list three (3) projects installed by the low Bidder's firm which used the type roofing specified in the Bid Documents. The Roofing Contractor shall also provide a sample copy of the Manufacturer's Roof Warranty.

c. Roofing Manufacturer: The Bidder is to state the name of the Manufacturer of the roofing system to be install.

4. Removal of ACM will be a part of the Contract and must be incorporated into the Bid Documents. [See Section 400.]

K.QUALITY ASSURANCE

1. The Roofing Contractor shall have been in business not less than five (5) years.

2. Within five (5) days after bids have been received, the low bidder shall provide the Owner with the following information:

a. A letter from the Roofing Manufacturer stating that the bidder is an authorized installer.

b. A sample copy of the Manufacturer's Warranty for the specified roofing system. A list of three (3) projects installed by his firm which used the type of roofing system specified.

L.PREBID ROOFING CONFERENCE

1. At least seven (7) days prior to bidding of a reroofing project, a prebid conference shall be held at the Project site. Attendance is not a prerequisite for bidding; however, it is strongly recommended.

M.PREROOFING CONFERENCE

1. On new and reroofing projects, prior to ordering roofing materials, a preroofing conference shall be initiated by the Professional.

2. At such time, the Roofing Contractor shall provide a list of materials to be used, Manufacturer's installation instructions as well as the Manufacturer's certification confirming that the materials to be used on the Project meet the specified American Standard Testing Materials [ASTM] Standards and a statement that the materials can be warranted by the Roofing Manufacturer.

3. On reroofing projects, the following personnel shall be in attendance:

a. Professional

b. Owner's Staff Inspector

c. Using Agency's Representative

d. Roofing Contractor

e. Roofing Manufacturer's Representative

4. On new roofing projects, the following personnel shall be in attendance:

a. Professional

b. Owner's Staff Inspector

c. Using Agency's Representative

d. Roofing Manufacturer's Representative

e. General Contractor

f. Roofing Contractor

g. Deck Contractor

h. Mechanical Contractor

N.ROOF INSPECTION

1. Inspections shall be made by the Manufacturer's technical representative, as necessary, to obtain the Roof Guarantee.

2. The Professional, or Representative, shall inspect the roof as the Work progresses. In particular, inspections shall be at the following times and followed by a letter of confirmation:

a. Inspect the substrate before any roofing is done.

b. Inspect at the beginning of roofing installation to assure the approved materials are being properly installed.

c. Inspect, as necessary, the Work as it progresses, or when a problem arises.

d. Inspection at the completion of the Work in order to give final acceptance of the Project.

O.ROOF BOND

1. The Professional shall submit to the Owner the original Roof Bond and include all Close-out Documents.

2. The Bond will be in the name of the Bureau of Building, Grounds and Real Property Management acting on behalf of the State of Mississippi as the Owner.

12 Miss. Code. R. 3-20-400.3

Adopted 11/25/2016

Amended 3/15/2021