Del Callman
3/10/2012
I recently replaced a comp roof with a 24 gauge snap lock metal roof installed on my townhouse. The contractor had recommended using Sharkskin Ultra Radiant underlayment for additional energy savings. Per Sharkskin's installation instructions the roof was installed on battens 20" OC with clips The battens are 1 X 2 and the clips are 3.5" wide. One screw goes through the batten into the roof decking and the other stands off and penetrates the roof decking with the clip standing off (see attached pic). Starting with winds around 10mph this roof is noisy. The other night we had a wind event with winds at 20mph gusting to 25mph and this roof was so loud that you couldn't sleep in the room where the rake ceiling follows the roof line. The rafters were creaking and other structural members sounded like they were being stressed. This was never the case with the comp roof. We are obviously concerned about both the installation and the noise and are looking for a solution to this problem. Thanks in advance for the panel for the volunteer work on this site. What a great resource.
Todd Miller
Classic Products, Inc.
3/10/2012
Is the roof completely installed and trimmed out yet?
Info @windowsonwashington.net
An informed customer is our best customer.
3/13/2012
Do you want the bad news or the bad news...? What is the noise that you hear? Is it the panels actually flexing that is creating the noise or the panels pulling on the structure? How is the tie in completed at the eave? While above deck ventilation is great idea, you would never do it in a high wind area because of the wind lift potential.
Del Callman
3/19/2012
Yes. Roof completely installed and trimmed out.
Del Callman
3/19/2012
I don't know how the tie in is completed at the eve. It's a 3 story townhouse and difficult to access. I can possibly take some specific pictures with my telephoto lens if I know specifically what you're looking for. Did the jpeg image of the clip installation come through? If so, any comments? Thanks to the contributors!!
Del Callman
3/19/2012
Todd. Not sure I replied to your question but yes the roof is completely installed and trimmed out. Wind gusts last night to 25 mpg and roof is extremely loud. You can also feel the rafters creaking which I assume is the roof pulling on the clips? Did you take a look at the clip installation? If so any thoughts or concerns? Thanks again
Todd Miller
Classic Products, Inc.
3/19/2012
Del, yes I saw that. It concerns me a little bit. What sort of spacing do you have on the battens / clips?
Del Callman
3/19/2012
Battens are 20" OC. The clips are fastened at every batten as shown in the pic.
Todd Miller
Classic Products, Inc.
3/19/2012
I don't know, Del. It may be pivoting some on the clips. Tell me more or remind me please what you have as far as ventilation either above or below the roof deck.
Del Callman
3/19/2012
Below is the explanation of the venting by the roofing contractor that installed the roof. If that doesn't make sense I can go into the attic and take some pictures. The complete roof consists of two shed roofs. The front half is higher than the back half. The back half meets the front half roughly two feet lower and there is a wall with sheathing and siding. The installers cut back about 3-4" along the entire bottom of that wall and installed what I believe he's referring to as a ridge vent z-closure. Hope this helps. "We removed the 3-4 air hawk vents on the roof and covered with metal because they were no longer needed since we cut the decking on the high eave of your roof and vented with perforated z-bar ridge venting. We also added additional venting at the headwall flashing area on the lower roofs by cutting back the decking and also installing perforated ridge vent z-closure metal underneath the headwall flashing."
Todd Miller
Classic Products, Inc.
3/27/2012
Del, sorry for not responding sooner. Interesting. The vents they describe at exhaust vents. There are I assume intake vents at the eave, perhaps soffit vents? I am wondering a bit if you don't have more air trying to come in than you can exhaust. Does the noise problem seem to exist with both roofs?
Guest User
4/14/2012
How are the battens attached? It looks like they're only attached with the clip screws. They need to be nailed to the rafters.

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