DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Bricks, Masonry and Concrete > cutting hole in block wall




Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old 06-04-2007, 11:32 AM  
rlarkin70
Junior Member
 
Join Date: May 2007
Posts: 4
Default cutting hole in block wall

Hi all- I just bought a house, it is masonry contruction (block) and so is the detached garage. The washer/dryer are located in the garage. Currently the dryer does NOT have an outside vent, it simply has a flexible tube exiting the dryer with a cut-off piece of pantyhose banded over the end of it. This lays on the floor a couple feet from the dryer. I would like to vent it to the outside. To do this I will need to cut a square hole in the block wall and install a dryer vent.
What is the best way to cut the block to do this? Would I cut a large hole and then frame it up somehow to house the dryer vent? If so, what is the best tool/procedure for cutting the hole in the wall.
Thanks for any help,
-Ron



__________________
rlarkin70 is offline  
 
Reply With Quote Quick reply to this message
Old 06-04-2007, 12:35 PM  
CraigFL
Senior Member
 
Join Date: Mar 2006
Posts: 409
Default

If your block is big enough and isn't filled, somtimes a swat with a 10+lb sledge hammer is all that's needed for a 4" duct hole....



__________________
CraigFL is offline  
 
Reply With Quote Quick reply to this message
Old 06-04-2007, 01:44 PM  
glennjanie
Senior Member
 
Join Date: Mar 2006
Posts: 2,992
Liked 2 Times on 2 Posts

Send a message via AIM to glennjanie
Default

Or, for a more controlled break. you can use a 20 oz. hammer. It takes a lot of licks but the block will begin to pulverize soon and you can control what you want to break out.
I don't understand why you wanted a square hole; dryer vents are usually round 4" pipe.
Craig mentioned a legitimate consideration; is your block filled with concrete? I know that many of the houses in Florida are, and even have reinforcing bars in them too.
It is possible to break out half a block, place a sleeve of PVC pipe and concrete around it, then you can run your 4" aluminum pipe through the sleeve. It makes a neat opening. (make sure your aluminum pipe will slip easily through the PVC sleeve before you start, you may want to use SDR21 PVC pipe for the sleeve. SDR21 is thinner, allowing more inside diameter.
Glenn

__________________
glennjanie is offline  
 
Reply With Quote Quick reply to this message
Old 06-06-2007, 08:27 AM  
rlarkin70
Junior Member
 
Join Date: May 2007
Posts: 4
Default

I guess I just figured it would be easier to cut a square-ish opening and then fit something in there with an opening to accomodate the dryer vent. I haven't measured the diameter yet.
I will take a look and see if the block is filled with concrete, I really don't know. If it isn't I will try the hammer to knock out a block, and that PVC pipe/concrete is a good idea.
thanks!

-Ron

__________________
rlarkin70 is offline  
 
Reply With Quote Quick reply to this message
Old 06-07-2007, 05:23 PM  
Mephistopheles
Junior Member
 
Join Date: May 2007
Posts: 12
Default

Go rent a core drill. And yes they come in sizes larger than what you need.
If you're intent on making a ugly hole, metal flash interior hole and attach duct to it then intall a flapper vent on the exterior wall. Use nylon anchors and screws.



__________________

Last edited by Mephistopheles; 06-07-2007 at 05:24 PM. Reason: add
Mephistopheles is offline  
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
Plaster wall - cutting out an access hole, but how to replace it? Steelmesh Walls and Ceilings 3 11-11-2008 09:28 AM
finishing a cement block wall in a basement summerdreamer Flooring 1 04-17-2008 12:48 PM
Filling Big Hole in Block Wall hurbear Bricks, Masonry and Concrete 4 03-02-2008 11:57 AM
Cutting An Opening In An Exterior Wall dbone Framing and Foundation 1 11-03-2007 11:34 AM
Cinder block wall options J Hawkes Framing and Foundation 5 12-18-2005 09:46 PM