How to install new roofjack in finished roof

Old 01-27-06, 08:30 AM
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How to install new roofjack in finished roof

I put the finishing touches on a dimensional quality asphalt shingle roof, with a vented peak, just last fall, and now I may need to install another roof jack to vent a new clothes dryer. I can't vent the dryer through the wall because its a stackable system in the middle of the house. I understand that I can carefully remove asphalt shingles and replace as I put in a new roof jack, but it's hard for me to see how the shingles can be nailed back down considering the overlap from shingles above. Removing the peak isn't desireable either. I don't want to compromise the look nor function of the new roof...Thanks for advice in advance.
Old 01-27-06, 05:17 PM
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With a flat bar, slip it under the single to break the seal so you can lift the exposed portion of the shingle. If it's not too cold and the shingle isn't too brittle you can lift the shingle and nail bracket under it without removing any shingle.
Old 01-29-06, 01:02 PM
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You will be able to get to all of the nails ok, except for the last course. For the last course, cut 1" off of the top of the shingle and bed the entire upper half of the shingle in roof cement, nail the lower nails by either holding the butt of the shingle above up and out of the way while installing the nails (warm days) or using a "flattened" wonderbar, slid under the upper shingle, positioned over the nail and then pound on the wonderbar to set the nail (freezing days). Both are a hassle!

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