Schedule of Flashings

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Author Message Robin E. Snyder Senior Member Username: robin Post Number: 59 Registered: 08-2004 Posted on Tuesday, August 22, 2006 - 01:23 pm:    An exterior envelope consultant made the recommendation that the specs include a schedule of all metal flashings on the project, including location, gauge, finish, and metal. Has anyone ever done something like this? It doesn't seem like something that belongs in the specs, but they claim they have seen it many times. Ronald L. Geren, RA, CSI, CCS, CCCA, MAI Senior Member Username: specman Post Number: 314 Registered: 03-2003 Posted on Tuesday, August 22, 2006 - 01:38 pm:    I've specified flashing by the material, gage, and finish for general location categories (i.e. copings, counterflashing, etc.), but never for specific locations. I guess you could identify flashing by a generic flashing schedule such as: A. Flashing Type F-1: Stainless steel; 0.019 inch thick; 2B finish. B. Flashing Type F-2: Copper; 16 oz.; Mill finish. However, this would rely on the drawings to properly identify which flashing type is applied to what flashing component, which is where it should be. This will require coordination with the architect to make sure they follow the tags that you've created for each type. Dave Metzger Senior Member Username: davemetzger Post Number: 169 Registered: 07-2001 Posted on Tuesday, August 22, 2006 - 01:50 pm:    When we've had more than one flashing material on a project, we've had the architect identify material on the drawings for each location (which is similar to Ron's use of Type designations. Another way we've handled it is to use wording such as the following: Downspouts: Apartment Tower side entry, exit from Stair No. 2, and roofs over stairs and elevator penthouse: Fabricate downspouts from aluminum. Other locations: Fabricate downspouts from copper. Brett M. Wilbur CSI, CCS, AIA Senior Member Username: brett Post Number: 141 Registered: 12-2004 Posted on Tuesday, August 22, 2006 - 01:53 pm:    I do what I call an Application Guidleine in Part 3. For example: 2. Application Guidelines - Install flashing at the following locations, unless indicated otherwise or required by specific condition as approved by Architect: a. Membrane Flashing: material transitions inside exterior cavity walls, roof edge/exterior wall transitions, masonry joints (control/expansion) inside exterior cavity walls, exterior door and window frame perimeters, roof deck/exterior wall transitions, exterior wall penetrations (i.e. pipe, conduit, ducts, etc.). Provide membrane at all joints, holes, gaps, or openings to ensure a continuously sealed building envelope. Utilize primer on substrates as instructed by manufacturer. b. Copper Flashing: exterior wall sill/weep conditions, exterior door and window head/weep conditions, masonry wall cap flashing. c. Stainless Steel Flashing: at roof through-wall flashing as specified in Section 07525. But in Part 2 Materials, I specify the actual material for each type of flashing. Doug Frank FCSI CCS Senior Member Username: doug_frank_ccs Post Number: 158 Registered: 06-2002 Posted on Tuesday, August 22, 2006 - 02:11 pm:    Arcom Masterspec, in Section 076200, includes a schedule of sorts in Part 2 where it includes the option to list every conceivable flashing type by location along with the specific metal and gage/thickness required. I guess it might work OK, especially where one might have all the same metal but different gage/thickness for different applications. I’ll believe it though when I see a flashing installer with tin snips in one hand and a Project Manual (open to Section 076200) in the other so he can be sure he’s using the right stuff in the right location. Margaret G. Chewning FCSI CCS Senior Member Username: presbspec Post Number: 113 Registered: 01-2003 Posted on Tuesday, August 22, 2006 - 02:37 pm:    I have done a schedule for the basic flashing in all of my military projects as part of the UFGS section 07620. it was in table format at the end of the section similar to a Hardware set schedule. Never had a problem to my knowledge and it did help to clarify and make us think about what type of flashing was going where. Wayne Yancey Senior Member Username: wyancey Post Number: 165 Registered: 05-2005 Posted on Tuesday, August 22, 2006 - 04:10 pm:    Robin, Your exterior envelope consultant is making a recommendation only and is not the eventual reader (GC) of the drawings and specifications. I favor the methodology posted by Ronald Geren, infact I use his approach for other materials that vary such as joint sealants, ceramic tiles, etc. Ronalds approach keeps the material keynotes generic but highlights a type so there should be no excuses after this. I have seen a purpose made section in Division 01 that includes all colors for materials. Each technical section makes referecne to this location. Contractors like this approach because all the color information is in one location. Same approach may work for metal flashings that can occur in many sections throughout a project manual. Wayne Nathan Woods, CCCA Senior Member Username: nwoods Post Number: 118 Registered: 08-2005 Posted on Tuesday, August 22, 2006 - 08:45 pm:    As a CA guy, I love the idea of a schedule for flashing. Similarly, I loathe the idea of F-1, F-2, F-3, etc... That approach is similar to the caulking sections I normally see, and it is a large area of confusion in the field and in the office. For a schedule to have merit, and to be realistically useful, that schedule should reflect the terminology or locations already shown in the details. (In other words, not requiring the architect/draftsman to go back and put your arbitrary refernce numbers into the drawings, potentially modifing dozens of existing details that were cut and pasted into a drawing set in great haste in the first place). It is quite conceivable that the flashings can be grouped by gauge and material anyway, due to location and use. The clearer you can make it (as opposed to the simplier), the more likely it will be scoped & bid correctly by the GC, documented in the sub's shop drawings, and properly checked by the overwhelmed person in the architect's office checking the submittal. Phil Kabza Senior Member Username: phil_kabza Post Number: 202 Registered: 12-2002 Posted on Wednesday, August 23, 2006 - 05:36 pm:    Nathan, You said the magic phrase: Shop drawings. If flashing applications are complicated enough to schedule (and they often are), they are complicated enough to require a shop drawing showing what goes where. That way, you can keep the specifications and drawings information CCC&C, and check the shops to make sure they "got it." But I do love Doug's image of the tin knocker with snips in one hand and my project manual in the other.