Guest User
11/13/2003
We are looking at the potential purchase of an existing home (built in 1994, Austin, TX) that has a metal roof. However, it is mounted directly to the roof framing/joists - i.e. no decking or barrier of any kind. At a minimum, this seems to lead to periodic water leakage (based on visual eviedence) whenever screws/fastners get periodically loosened/backed out. It probably (my guess) is also more noisy in wind and rain, and may be inefficient from a heating/cooling perspective. One recommendation was to completely replace the roof - an unfortunate conclusion if true, since the roof is only ten years old and the logistical challenges of opening the house to the elements during construction would be complex. What is considered normal practice for metal roof installation with regards to decking or other barriers ? If it is generally ill advised to install without decking, is replacement the only viable option ? Thanks, Cat on a Hot Tin Roof, so to speak
Todd Miller
Isaiah Industries, Inc.
11/13/2003
There are many metal roofs suitable for installation over purlins/lathe. Can you locate the manufacturer of the roofing and make this inquiry with them pertaining to the exact style of metal panels which you have on your new home?
Guest User
11/14/2003
Thanks for your reply. We are trying to track down the builder, roofing mfr, etc. to learn more of these details. But if I understand the jargon correctly, there is no lath involved - it is just metal roof laid down directly on the rafters/perlins, etc. The resulting condensation, leaks through backed out fastners (of which many loose fastners are visible even from the ground), etc. are the reason for concern that the roof was either improperly installed, or that cost optimization (i.e. no decking or any other barrier) is now leading to problems that require replacement.
Todd Miller
Isaiah Industries, Inc.
11/14/2003
You are doing the right thing by tracking down the manufacturer. Let me know if I can help. Is there any chance that improper or inadequate ventilation could be a contributing factor here?
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