Replies

1. 
   bambam | Sep 17, 2006 10:25pm | #1

   I'm not a profesional  vinyl siding installer but where I'm from most installers (in most cases) do run over the existing soffit on older houses. Ventilation shouldn't be a problem with the proper use of perforated siding. I live in a fairly humid region.

   Like I said I dont know if it is correct, it is pretty standard. Most of my experience is light commercial.

   btw, welcome to BT. Fill out your profile and someone from your region can probably help you better. 

2. 
   Stilletto | Sep 18, 2006 12:10am | #2

   Welcome to BT man. 

   I install alot of soffit mostly aluminum but that is not important.  In a remodel situation you can leave the old plywood soffit there. 

   Is the new soffit split into two groups?  As in solid and vented panels?  Or is there vents in every piece?  

   At any rate at your vented parts of your soffit you need to cut holes in the plywood soffitt for airflow into the attic space. 

   Tool for cutting the holes is dealers choice.  Sawzall,  circular saw cordless or corded,  Drill with 4"  holesaw,  etc.....   Up to the operator,  whatever you feel most comfortable with overhead.   

   Get some safety glasses though you will be cutting overhead and your eyes are magnets for debris at least mine are. 

   Good luck with your project,  post pictures we like those,  and ask questions as you need. 

       

   What the problem is? 

3. 
   DanH | Sep 18, 2006 01:33am | #3

   Several folks in our area had trouble with rot after aluminum soffit went over plywood. The problem is that, if no additional vents are cut into the plywood, the effective vent area is greatly reduced -- just that part of the perforated soffit that falls near the hole in the plywood.

   For this reason some installers cut a slot in the plywood, or remove sections of it.

   If Tyranny and Oppression come to this land, it will be in the guise of fighting a foreign enemy. --James Madison