Attachment_3_Questions_and_Answers_Roofing_IFB_W91QF517B0001.pdf

Fort Lee Sol W91QF5-17-B-0001 – Post-Wide Roofing (Repair and Replacement)

Question Answer

1. Manufacturer Warranty periods: Page 59 and 73 of The Statement of Work states the manufacturer’s warranty shall be not less than five (5) years. Additionally, Page 90, 108, 120, 136, 143, and 158 states the manufacturer’s warranty shall not be less than ten (10) years.

These warranty periods are very low and not typical for the roof systems being installed (or the industry standards) – usually the Government requests and receives a 20 year No-Dollar Limit warranty for flat roofs from the roof manufacturer. Additional coverage beyond 20 years is possible for sloped roofs. Please review the requested warranty periods and confirm for each system.

The warranty on roofs shall be one year on install/ labor and different standard material warranty have different manufactory warranties.

Different manufactory give different warranties on different type of materials. All the Directorate of Public Works (DPW) is looking for is the manufactory standard warranty on the materials that are provided to that task order.

Most roofing manufactory warranty are not less than ten years on materials. I know the asphalt shingle roof will give a 25, 30 or 50 year shingle life. Again that is all DPW is looking for what is the manufactory warranty.

2. The Contractor’s warranty period of 10 years for asphalt shingle roof systems is not typical – Installer warranties are typically 1-2 years.

Please confirm duration of Contractor’s warranty.

The asphalt shingle roof will give a 25, 30 or 50 year shingle life. Again, that is all DPW is looking for what is the manufactory warranty.

3. Roof Decks: Remove existing and replace with new steel roof decking, includes all closures and accessories.

a. Is this office or warehouse space?

b. Is there a solid ceiling beneath or is it accessible and visible?

c. Is interior protection needed?

d. What is the deck attachment method?

i. Welded?

ii. Spot welded?

iii. Shot attached?

iv. Screwed?

This will be building by building case on Fort Lee.

This is a post wide roofing contract and each facility is construction out of different material so it will be hard to tell you what roofing materials at this time. It could be office, warehouse, gym, and training facility. Yes it could have drop ceiling or sheet rock ceiling. I will say on this contract a whole roofing decking is very rare then just decking repairs. Most case the decking is shot attached or screwed. Cannot pin point it down since there are different type of decking on Fort Lee but will be determinate at the Site visit.

4. Insulation: Provide rigid roof insulation in conjunction with roofing system specified.

a. What type of deck is the insulation being applied to?

i. Concrete?

ii. Gypsum?

iii. Tectum?

This will be building by building case on Fort Lee.

This is a post wide roofing contract and each facility is construction out of different material so it will be hard to tell you what roofing materials at this time. In most case replace in kind unless engineer design call for different material. Yes it could be all the materials listed at one facility or neither. Cannot pin point it down since there are

iv. Steel?

v. Wood?

b. How is the insulation to be attached?

i. Adhered with adhesive

ii. Adhered with asphalt?

iii. Screws?

iv. Augers?

v. Spikes?

vi. Loose laid?

c. What is the PSI for the ISO?

i. 20 PSI?

ii. 25 PSI?

d. What type of facer is the ISO supposed to have?

i. Standard fiberglass facer?

ii. Coated glass facer?

iii. Fire retardant facer?

iv. Several other varieties and options are available.

e. Provide tapered insulation priced per board foot

i. What slope?

different type of insulation on Fort Lee but will be determinate at the Site visit or building prints.

This will be building by building case on Fort Lee.

This is a post wide roofing contract and each facility is construction out of different material so it will be hard to tell you what roofing materials at this time. In most case replace in kind unless engineer design call for different material. Yes it could be all the materials listed at one facility or neither.

The standard which we require is 20psi for ISO material. 25psi is not typically what we request.

The facer will depend on the type of roof being installed. Some with call for glass reinforced facers but usually what is replaced will mirror what was already there.

This will be building by building case on Fort Lee.

This is a post wide roofing contract and each facility is construction out of different material so it will be hard to tell you what roofing materials at this time. In most case replace in kind unless engineer design call for different material. Yes it could be all the materials listed at one facility or neither.

Again can’t pin point it down since there are different type of taper insulation on Fort Lee but will be determinate at the Site visit.

5. Elastomeric roof coatings

a. Install new elastomeric roof coating, including preparation of roof deck, new insulation or existing insulation to remain

i. What type of preparation to the roof deck?

1. Wire brush and prime?

2. Prime only?

This will be building by building on Fort Lee. This is a post wide roofing contract and each facility is construction out of different materials so hard to tell you roofing materials at this time. In most case replace in kind unless engineer design call for different material. Yes it could be all the materials listed at one facility or neither. It could be yes to 1, 2 or 3 depending on what will be

3. Patch holes?

ii. Is new insulation coming from a unit price already established?

iii. What type of elastomeric coating?

1. There are many elastomeric coatings and systems and all are for various uses and situations.

agree on at the site visit of eth facility. Yes if insulation need to be replace there will be different Line Item for the item.

Again can’t pin point it down since there are different type of coatings on Fort Lee but will be determinate at the site visit.

This will be building by building on Fort Lee. This is a post wide roofing contract and each facility is construction out of different materials so hard to tell you roofing materials at this time. In most case replace in kind unless engineer design call for different material. Again can’t pin point it down since there are different type of coatings on Fort Lee but will be determinate at the site visit.

6. Sheet Metal

a. Conductor heads are asked to be priced by the SF.

i. This probably needs to be priced per each item. A square foot price is not practical. Can you change this to a price per item?

ii. What size conductor heads?

1. Length, width, height, depth?

This will be building by building on Fort Lee. This is a post wide roofing contract and each facility is construction out of different materials so hard to tell you roofing materials at this time. In most case replace in kind unless engineer design call for different material. SF price allow to keep the Line item down from listing each conductor size on the contract. Again can’t pin point it down since there are different sizes of conductor heads on Fort Lee but will be determinate at the site visit.

7. Remove existing preformed non-structural metal roofing.

a. Disconnect and reconnect existing roof mounted electrical equipment:

i. Is there interior access?

ii. If so, is it warehouse or office?

iii Ceiling or no ceiling?

iv. If we are disconnecting, does the unit need to be removed from the roof and then

This will be building by building case on Fort Lee.

All these will questions would be determinate at the Site visit. If electrical equipment needs to be disconnect and reconnect to replace/repair the roof Government will have BASEOPS contractor accomplished that work. If equipment is need to be removed from the roof than that will be determinate mythology of the work.

placed back on the roof at a later date to be reconnected?

8. Construction Aids -- Section A: provide fixed steel tubular scaffolding (cost per csf of building; one use per month).

a. We cannot find scaffolding contractors who will price without additional information and site details. Can you please provide a detailed example for which we can provide accurate pricing? For instance, can you provide more detailed circumstances around a typical building on your facility?

i. What is the terrain around the building?

ii. What is the height, length and width of the building?

iii. What type of building is it?

iv. What is the access to that area of the building for delivery and demobilization of scaffold?

v. Are there trees or shrubs in the area?

vi. Can we attach to the building?

vii. Is the scaffold being erected over, or near any egress pathways and doors?

viii. Does the scaffold need to be secured with doors, walls and locks?

ix. Is the scaffold being erected over any depressed or low window basins?

This will be building by building case on Fort Lee.

All these questions would be determined at the Site visit. A site visit will be accomplish to each facility before final pricing will be agree by both parties before a Delivery order will be assigned to that contractor for that facility.

9. There is a section requiring pricing for Hypalon™. Unfortunately, Hypalon™, a trademarked product formerly produced by a DuPont subsidiary, is no longer in production.

Most users of Hypalon™ have switched to PVC products. Can we assume you will accept PVC membranes as a suitable replacement?

Yes

10. Site Visit: Will you schedule a site visit so as to provide concrete examples of situations and buildings on which you will base your decisions on this procurement?

The winning contractor will look at each facility before final pricing is agree on as Delivery order to that contractor for that facility.