What is the best way to install a dryer vent in a sip wall.  I have to go into the wall from the dryer and up about a foot before I exit the building.  I added a "Dryerbox" http://www.dryerbox.com/specifications.htm and installed the vent and spray foamed the heck out of it.  Now I am deciding that this is not a good idea.  I gut the SIP so that the 4" just fit with little clearance to the white styrofoam.  Right now I am pulling it apart and going to cut the SIP back further and going to pack the void with roxul safe 'n sound.  I am going to cut back about 3" on each side of the vent.

Any thoughts on a better was to vent?  I did a net search on this and suprisingly found nothing,

THX

1.   If possible go straight out the back of the dryer, you will need the dryer specs.

2.   If you have the room build a false wall in front of SIP

3.    use periscope vent

Thanks. I am not able to go straight out because I have a cantilevered roof from the lower floor too close to where straight out would be. Building out would not work either as I am building the front load washer and dryer into cabinets and the extra 4" or so would push the units out too far. I have seen what you posted and did not want to have to constrict the flow to much when I don't need to (its only a foot up including the elbow that I went). That is a great item that I am going to put in for my mom though. She has a grade beam behind her w&d that are behind a door in the back entrance. The washer is flush and the dryer sticks out an extra 2". That item would be ideal for her to get them flushed up. Thx again.

All Done!  :-)

Gary;

what is that stain at the wall joint from?

Some notes on what you see.  The green in the circles is some spray foam.  For the electrical I would cut a 2-1/4" circle  every 16" or so and then drill up and down with a 1" drill  bit on an extension and then feed the wire either from above or below.  I found the electrical much easier to do than I though it would be once I got a pattern down and went through a few different types of electrical boxes and methods until I found the right one.  Quite a learning curve.  It will be easier next time.  Then the spray foam would go in.  The foam has been green, one can I got recently was like pumpkin orange but mostly it is yellow like you can see coming out of the bottom of the dryer box.  I shot a bit up there to seal to the vapor barrier. 

You can also see green from the Roxul Safe 'n Sound insulation.  I cut out the whole area for the dryer box and the duct and removed all of the styrofoam.  I then cut some roxul down to a 2-1/2" thickness and put it behind the dryerbox and then cut other sizes to fit.

You can also see blue strips.  I used "BlueSeal", it is a paintable rubber membrane.  I used it on all seam and on the top and bottom of each panel inside and outside of the house.  This made it 100% impervious to any kind of air infiltration.  I started painting the OSB inside yesterday with alkyd primer.  That will be my vapor barrier.

G

Gary;

no I mean the actual SIP joint on the left is dark, was wondering what that was from? was is in water?

No that is the Blueseal paintable membrane. See last paragraph of my post above. Cheers.

http://www.bluesealwaterproofing.com/BlueSeal/BlueSealSolution.shtml