kitferre Posted April 27, 2010 Report Share Posted April 27, 2010 I built a home with a general contractor in the mountains near Lake Tahoe (elev. = 6500 ft.) last year. The issue I recently had condensation dripping from the peak of the interior ceiling when the temperature (60 + degrees) & the solar gain increase recently. The roof assembly is new to me, for I have previously done scissor trusses with an attic. This one is built with 2 x 14 lvl @ 16" o.c. (i.e. big snow load) The pitch of the roof is 5/12, & runs 28' both sides to sit on a center beam. The soffit has a continuous vent with holes in the blocking, & a ridge with a continuous vent. The construction assembly is asphalt shingles, building paper, 5/8" plywood, 2" of air space, R-38 batt w/kraft paper w/ baffles at each end, 1/2" rock, & 1x8 cedar boards. The builder & myself went up & look at the ridge vent. The roof framing has an engineering detail of nailing the roof sheathing into a center peak block which was notched for air flow. We have decided that we need create bigger notches/holes to increase the air-flow to the ridge vent. A light bulb went off in my head, & my question to this journal is about humidifiers. We install a Honeywell TruSteam humidifiers to the furnaces, & only recently (past 2 months) got it integrated with a byrant thermostat. Our climate is typically dry, so we have run it to 40 + % of R.H. The question I have could this be the source of the condensation? Thanks for any practical responses in advanced. Quote Link to comment Share on other sites More sharing options...
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