In his article "Efficiency Dos and Don'ts" (10/06), Martin Holladay states that if an attic is insulated, "high attic temperatures don't matter much." This is a shortsighted view of energy efficiency. Attics are ventilated to protect the roof. Excessive attic temperatures will drastically shorten the life of an asphalt-shingle roof. How much energy will be wasted manufacturing and installing a new roof?

Also, on page 39 of the same issue (Q&A), you show a picture of what is supposed to be fiber-cement siding with water intrusion at the butt joints. It doesn't look like fiber-cement siding to me.

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