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Ralph Liebing
Senior Member
Username: rliebing

Post Number: 177
Registered: 02-2003
Posted on Wednesday, May 25, 2005 - 07:04 am:   Edit PostDelete PostPrint Post

Do you use a roof system warranty that covers "everything from the deck up" [including metal edge systems, etc.]?

If so, and in any other event,do you include the wood blocking and nailers as part of the roofing system [hence, under the warranty] or is that required under some other Section?
William C. Pegues, FCSI, CCS
Senior Member
Username: wpegues

Post Number: 393
Registered: 10-2002
Posted on Wednesday, May 25, 2005 - 11:04 am:   Edit PostDelete PostPrint Post

I like to (and typically do) specify roofing as a system that includes its flashings, insulations, separate sheets, ballast (pavers or stone), and now days even garden roof type soils and plantings.

Not every manufacturer will do this though, and writing it that way does not make it happen.

Thus I am pickey concerning the manufacturer's and systems I use, and when I can't use one of them and need a system that does not include everything, I make sure to find out just what they do include in their warranty. I still make them review and inspect everything even if it is not in the warranty.

However, some things like blocking at the top of the parapet is not typically included. And - often the cap flashing at the top of the parapet is not included either. And I cover those in other sections.

Wayne Yancey
Senior Member
Username: wyancey

Post Number: 12
Registered: 05-2005
Posted on Wednesday, May 25, 2005 - 03:19 pm:   Edit PostDelete PostPrint Post

In my Canadian and US experiece, rough carpentry items such as wood curbs, wood cants, sloped wood blocking under parapet copings, other nailing bases (things that are securely fastened to the building structures) for membrane roof systems are provided by the general contractor. The roofing contractor covers what is provided and they do not provive concrete or steel or nailable roof decks. The roofer examines the condition of substrates which they either except or reject. The roofer is responsible for cants that are integral with the roof membrane installation such as those hot mopped into place at vertical junctions. Although the metal coping flashings and base/counter flashings are specified in a different section, they may be included as part of the roofing system (vapor retarder, insulation, cover board, wood fiber cants, membranes, etc). Roofing sheet metal flashings and trim may be included for one source responsibility by reference in the membrane roofing section.
Wayne Yancey
Senior Member
Username: wyancey

Post Number: 15
Registered: 05-2005
Posted on Wednesday, May 25, 2005 - 06:58 pm:   Edit PostDelete PostPrint Post

Oops, used the Canadian spelling for experience and lost the letter "n" due to the exchange rate.
Shedrick E. Glass, CSI,CCS
Username: shedd_glass

Post Number: 3
Registered: 07-2004
Posted on Thursday, May 26, 2005 - 08:57 am:   Edit PostDelete PostPrint Post

A warranty that includes elements not furnished and installed by the warrantor is not enforcable. Would you warranty construction elements furnished and installed by another trade? Don't think so.

For metal roofing systems, I specify adjacent sheet metal flashings and trim associated with the metal roofing system in the sheet metal roofing section and include in the metal roofing wearranty.

For membrane roofing systems, I specify sheet metal flashing and trim in a seperate spec sections and do not include in the membrane roofing warranty.

For reroofing projects, I specify selective demolition of the existing roofing system as part of the work of the reroofing spec. This makes the roofing system installer in control of all elements of the work he is required to warranty.
Ralph Liebing
Senior Member
Username: rliebing

Post Number: 178
Registered: 02-2003
Posted on Thursday, May 26, 2005 - 09:20 am:   Edit PostDelete PostPrint Post

FYI-- In following up on this situation, I have found that the nailers and blocking are traditionally considered as part of the substrate [like the roof deck] by the roofing manufacturers. In addition, there seems to be a major jurisdictional problem, in that it is not well settled, natiaonlly, as to who installs the blocking. etc.
So, as noted by others, we are retaining roof nailers and blocking under Rough Carpenty, but with a reciprocal proviso that their installation comply with FMG 1-49 [per recommendation of the roofing folks]

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