metal door in factory-finished metal product exception?

I'm using LEED NCv2009 and for EQc4.4 under this, we require our Steelcraft metal doors that have a kraft honeycomb core to document NAUF for the door since the core is agrifiber based. 

Hi Charline,

I am awaiting formal review comments on my first LEEDv4 project construction submittal so curious to hear what "lessons learned" others can offer.

Thus far, when a hollow metal door has no special core/inner material I have been treating it as exempt, listing it as classifying as "inherently non-emitting", using the same exception rational under BD+C Ref Guide Table 5 note as follows:

Testing not required:
• Bare concrete or metal structural elements; tile, masonry and cut stone without integral organic
based coatings and sealants; factory-finished metal wall products; and glazing.

However, when a door has an insulation or acoustical core - gypsum or foam insulation, for example - and does not have their door TVOC tested I have been treating it as a non-compliant assembly. Using Opt 2 method, naming the assembly something like "insulated metal door" entering one line item for the surface area of the 2 exempt "metal faces" and another line item for the 1 layer of "non-compliant polystyrene (whatever type) core".

I wasn't sure but this approach follows the general guidance offered in the Reference Guide Option 2 Table 5 calculation examples....

Hello,

We have similar problem, however in our case, the problem concerns external sectional door dividing interior from exterior. The door’s layers (counting from interior) are: coated and galvanized metal,  PUR foam and then coated galvanized metal. Can we treat the metal sheet from the interior side as waterproofing membrane or should we check the foam voc emission compliance?

Hi Joanna, just curious if you received your review from GBCI and if you have any further insight you can share? We have the same situation on a project and are seeking guidance. In our case we have a factory finished hollow metal door with a honeycomb core. Thank you!

Following this thread.

Hi there,

I am currently awaiting the final review/ruling. Its due back mid-March. I'll do my best to provide an update then....if you don't see it, just ping me by March 20 or so! Happy to share the lessons learned.

Any update on this issue?  I am trying to figure out how to include insulated metal door and insulated metal panels for Option 2.  Thanks!

Ping! :)

Hi all,

Apologies for the delayed response - my proposed strategy of breaking/itemizing the assembly into separate line items -

1) exempt metal exposed surface area (both sides of door face in interior application) - XXXX sqft &

2) non-compliant core material (single surface) area - XXX sqft

was accepted without comment. Best of luck in your efforts. I have found the VOC calculations and associated data collection from manufacturers to be extremely tedious and time consuming, so let me know if you find otherwise!

Agata,

I am not certain how LEED officially views the exterior doors. It would be safest to assume the outer exterior layer serves as the weather barrier (as it protects the core from weather exposure).