DIY instructions for dryer vent modifications

prinesurfNovember 3, 2012

Hi there

We are DIY's but would like some advice for a dryer vent. I have read this in other posts, but I'd feel better if others would comment directly on my case.

I'm wanting to reroute the venting of a dryer due to its current long length and inefficient drying of my clothes. (please assume my modern dryer has specs of no more than 40 feet of venting)

The current set up: Dryer on second floor. Vents into recessed dryer box (like The Dryerbox) into a 4" vent in the wall. once in the UNHEATED attic, it continues in a all-in-one flexible insulated vent pipe (I don't know the diameter just yet) it slopes up 45 degrees to the roof.

The length of the wall run is about 9 feet, the attic run is about 30 feet!

The change: I'd like to keep the in wall run. After it enters attic I was going to put a 90 degree turn then run it straight out to side of the house about 10 feet.

Challenge: installing the exterior portion of the dryer vent, since it is 25+ feet up from ground.


1. Should turn at the attic be less than 90?

2. Can I just cut the existing long vent run and use that existing venting and reroute it.

3. What would you recommend as the IDEAL diameter and material for an attic vent run?

4. what type of sloping do I need (I've read 2 suggestions sloping up away from dryer and sloping down towards dryer)

5. Can I use a standard dryer cap, would one of those "Heartland Energy Saving Vent Closures" make any difference into the unheated attic.


Thank you for reporting this comment. Undo

oops I made a few errors, I just visually inspected my hard to access attic.

the current set up is a 5" rigid vent pipe that runs flush with the attic floor then bends 90 to vent out the roof. (the vent is buried under 5" of cellulose insulation
the entire run from the dryer to the roof is about 30 feet.

I'm thinking that I will buy and install a new pipe to ease the mess up there. So I'd still like advice on the most efficient size/material vent pipe to install to make a shorter run.

    Bookmark   November 4, 2012 at 1:34PM
Sign Up to comment
More Discussions
Stacking washer and dryers of different makes
I just learned that my Kenmore washer was beyond repair...
Blinded by the technology and shiny bits
A couple of weeks ago my 20 yr old 22lb Admiral dryer...
Persil at Walmart!
I was looking through the walmart flyer and I saw that...
How to access Program Mode in Miele W3038
After almost four years without a washer yesterday...
Speed Queen washer
When you all are discussing your Speed Queen, did you...
Sponsored Products
36" Maestro Series Stainless Steel Black Wall-Mount Range Hood - 600 CFM
Signature Hardware
Atlantis Tubs 3660PAR Petite 36 x 60 x 23 - Inch Oval Air Jetted Bathtub w/ Righ
Beyond Stores
Nelson Platform Bench
Design Within Reach
48 x 32 Granite Shower Base Gray Stone - PALAOS
Cavaliere-Euro 30-inch Wall Mount Range Hood
'XO' 3D Wall Sign
$44.99 | zulily
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™