Replies

1. 
   xMikeSmith | Apr 09, 2002 01:03am | #1

   build a curb .. we use PT..  then flash the curb with your roofing material.. and install the roof jack on top of the curb

   Mike Smith

   Rhode Island : Design / Build / Repair / Restore

1. 
   JeffBuck | Apr 09, 2002 01:43am | #2

   If this is a bath exhaust vent......any chance on running it thru the wall? Jeff   *  Jeff J. Buck/ Buck Construction/ Pittsburgh, PA  *    

   2nd Generation Buck Const, 3rd generation Craftsman                         

2. 
   Piffin | Apr 11, 2002 01:18am | #3

   There is no good answer to this question because roll roofing is not a good choice for flat roofs over living areas, even if it was hot mopped down. You have a precarious instalation of a very low budget material over an expensive, finished interior.

   But if this is a "we'll keep the cheap roof for a couple years to get us by until we can afford a real roof" situation, then You can do this;

   Bring the hole through the roof deck and set the pipe.

   Slide a fitting flashing flange down over the pipe and mark where the edges of it are.

   Trowel a bed of plastic roofing cement(the fibred kind, not the runny goop)in under it and set the flange back dowen into it, mashing it in good.

   Nail the flange down every two or three inches around the edge.

   Coat the edge with a band of roofing cement about six inches wide, three inches on either side of the metal edge. Bed a layer of roofing membrane into it.

   Do the same again except go nine inches wide.

   Coat it again so no membrane shows.

   Cap the top of the pipe and caulk the flange top to it.

   Get out the GoJo for your hands.

   As you are cleaning them, and they are held firmly together, hold them that way for a moment and pray that it doesn't leak.

   Excellence is its own reward!