Cinderblock Wall - Windows, Siding and Doors - Contractor Talk

Cinderblock Wall

 
Thread Tools Search this Thread Display Modes
Old 01-30-2006, 05:29 PM   #1
Home Improvement Guy
 
ron schenker's Avatar
 
Trade: Renovations contractor
Join Date: Dec 2005
Location: toronto,Canada
Posts: 1,480
Rewards Points: 500

Cinderblock Wall


I need to enlarge an opening in an interior wall (concrete block) from 2 ft. to 12 ft. x 8ft. high. What is the easiest way to bring down the blocks? I'm thinking of hammering into the mortar lines with a concrete chisel and then just smash the blocks with a sledgehammer. Install a lintel recessed a min. 12" on each side, and Bob's your uncle. This is in a showroom of a carpet store and I would rather not use a concrete saw. Advise?
ron schenker is offline  

Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. ContractorTalk.com DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!

   

Advertisement

 

Old 01-30-2006, 08:10 PM   #2
 
bob the builder's Avatar
 
Join Date: Oct 2005
Posts: 302
Rewards Points: 250

Re: Cinderblock Wall


Quote:
Originally Posted by ron schenker
I need to enlarge an opening in an interior wall (concrete block) from 2 ft. to 12 ft. x 8ft. high. What is the easiest way to bring down the blocks? I'm thinking of hammering into the mortar lines with a concrete chisel and then just smash the blocks with a sledgehammer. Install a lintel recessed a min. 12" on each side, and Bob's your uncle. This is in a showroom of a carpet store and I would rather not use a concrete saw. Advise?
Or you could invite a karate class to perform a demonstration on your wall...

Advertisement

bob the builder is offline  
Old 01-30-2006, 08:20 PM   #3
 
i_plant_art's Avatar
 
Join Date: Jan 2006
Posts: 81
Rewards Points: 75

Re: Cinderblock Wall


why not use a concrete saw???? so much easier and fast dontya think. the vibrations from the hammer could possible crack the block in other places, not to mention the sound, and how "rough" a cut it would make vs. the saw. personally i would use the saw and the ole sledge to knock out the inner portion.
i_plant_art is offline  
Sponsored Links
Advertisement
 
Old 01-30-2006, 08:35 PM   #4
DGR,IABD
 
mdshunk's Avatar
 
Trade: Electrical; Commercial and Residential Service
Join Date: Mar 2005
Location: Central PA
Posts: 9,683
Rewards Points: 2,002

Re: Cinderblock Wall


That's why God made Zip Walls. Get yerself one, or fashion something, then go to town with the concrete saw.
mdshunk is offline  
Old 01-30-2006, 09:28 PM   #5
 
ATS's Avatar
 
Join Date: Jun 2005
Posts: 162
Rewards Points: 150

Re: Cinderblock Wall


What I's would do is, buy a 40 dollar concrete blade for my circ. saw and cut the block to your dimensions, then do your sledge work. Piece a cake! And a good looking end result.
ATS is offline  
Old 01-30-2006, 09:56 PM   #6
Pro
 
Teetorbilt's Avatar
 
Trade: Residential Contractor
Join Date: Feb 2004
Location: Jensen Beach, FL
Posts: 10,471
Rewards Points: 2,000

Re: Cinderblock Wall


Isn't there a lintel already in place? I would replace the lintel first and then widen the opening. How many courses of block are overhead and how much are they supporting?
__________________
You can't solve you're problems with the same level of thinking that created the problems.

Albert Einstein
Teetorbilt is offline  
Old 01-30-2006, 10:32 PM   #7
 
locofoco's Avatar
 
Join Date: Dec 2005
Posts: 150
Rewards Points: 75

Re: Cinderblock Wall


Teetor is right do that lintel 1st. 12 feet is a good span to support.
One thing I've done in the past, when I've wanted to keep the dust down is to take a GOOD hammer drill with a small bit (1/4"-1/2") and score the opening (holes 1/2-1") apart on both sides. It's a good job for a new apprentice, etc. Slow but it works. Then use sledge or electric demo hammer.
locofoco is offline  
Old 01-30-2006, 10:39 PM   #8
Home Improvement Guy
 
ron schenker's Avatar
 
Trade: Renovations contractor
Join Date: Dec 2005
Location: toronto,Canada
Posts: 1,480
Rewards Points: 500

Re: Cinderblock Wall


Teetorbilt: The opening now is 2 ft. wide by 8 ft. high, I want to increase that to a 12 ft. wide opening. There is a 2 ft. lintel now that I will tear out and replace with a 12 ft. lintel. The new lintel will be fine structurally, there's only the roof above and it's not a loadbearing wall. This new opening will open up the other showroom beside it allowing customers better access. I thought about the saw, but isn't it really dusty and loud.
ron schenker is offline  
Old 01-30-2006, 11:45 PM   #9
Pro
 
IHI's Avatar
 
Trade: General construction and remodeling
Join Date: Dec 2004
Location: Waterloo, IA.
Posts: 2,408
Rewards Points: 1,040

Re: Cinderblock Wall


Do you have any wall swawing contractors in your area? I used to cut in my own openings for egress but found by the time I rented a saw, set everything up, cleaned everything up the extra $100 I spent to have it done by a specailist was well worth the money since there's no easy way to cut concrete in living spaces and confined walls to prevent dust bowls.

Gas saws work great outdoors cutting but do not go deep enough into 8" block so you have to cut inside. gas models will trigger co2 detectors and fill the house with exhaust smoke...i know. Electric quickie's suck cuz they dont have the brute power of gas and it takes forever, not to mention they love bursting fuses/breakers in older homes...did I mention teh dust problem since you typically try and make "fallout" area as small as possible?

I have'nt rented it, but have heard the concrete chain saws work very well with minimal dust as compared to quickie saws...only problem is you get charged every way possible for them from the saw itself, then the blade, then the wear on the blade....heard rental for a chain saw & masonary blade from a rental store typically runs in the $4-500 range and that's $200 more than it costs me to have it done if we dig the hole and only costs $500 to have hole dug and hole cut if I get lazy and sub out that entire deal

Either way you rgonna need to cut in the I beam prior to cutting anything out, that's too wide of a span to trust the unsupported block to hold itself up..waay too much liability there for somebody getting hurt badly.
IHI is offline  
Old 01-31-2006, 04:25 PM   #10
Home Improvement Guy
 
ron schenker's Avatar
 
Trade: Renovations contractor
Join Date: Dec 2005
Location: toronto,Canada
Posts: 1,480
Rewards Points: 500

Re: Cinderblock Wall


Thanks guys, gonna start thurs. morning. I'll keep you posted.
ron schenker is offline  
Old 02-01-2006, 08:55 AM   #11
GC
 
Jess's Avatar
 
Trade: General Contractor - Remodeling Secialist
Join Date: Jan 2006
Posts: 39
Rewards Points: 25

Re: Cinderblock Wall


Ole Teeter is thinking ahead - here in Fla we deal a lot with masonry walls. Even if this is an interior non-bearing wall, the courses above the existing 2' lintel could put a goose egg on your cap. I would consider taking the block down to my plate height and infill framing the space above with metal studs. What is the finished wall surface - will you cover it with DW? Over the years I,ve created new openings in masonry walls at least a dozen times. Tried everything from 21" diamond blade elec wet saws to drill & sledge. Drill your holes and call for a renta-drunk.
Ps - tell the agency he needs goggles, gloves, and hard hat an workers comp.
Jess is offline  
Old 02-02-2006, 08:51 PM   #12
Home Improvement Guy
 
ron schenker's Avatar
 
Trade: Renovations contractor
Join Date: Dec 2005
Location: toronto,Canada
Posts: 1,480
Rewards Points: 500

Re: Cinderblock Wall


Job got postponed until Monday. However,upon second inspection I noticed that there had been a large opening there at one time complete with lintel. It is just a little bigger than the client wanted. He says the place was an auto repair shop many years ago. It looks to me like it was a big garage door that got cinder blocked up to allow for 2 smaller retail showrooms. I explained how it would be a little cheaper for him to let me open it back up to the way it was, rather than the other way with a new lintel and smaller opening. He's fine with that, so Monday we'll have sledgehammers in hand (no saws, wet or dry) and drill some holes along the mortar joints and start smashing. I luv demolition, it makes me feel macho!
ron schenker is offline  
Old 02-02-2006, 09:03 PM   #13
Pro
 
Teetorbilt's Avatar
 
Trade: Residential Contractor
Join Date: Feb 2004
Location: Jensen Beach, FL
Posts: 10,471
Rewards Points: 2,000

Re: Cinderblock Wall


Sounds to me like you're 'in like Flynn'.
__________________
You can't solve you're problems with the same level of thinking that created the problems.

Albert Einstein
Teetorbilt is offline  
Old 02-03-2006, 05:50 PM   #14
Pro
 
jmic's Avatar
 
Trade: manager of excavation division
Join Date: Dec 2005
Location: danbury,ct.
Posts: 3,660
Rewards Points: 2,000

Re: Cinderblock Wall


Quote:
Originally Posted by ron schenker
Job got postponed until Monday. However,upon second inspection I noticed that there had been a large opening there at one time complete with lintel. It is just a little bigger than the client wanted. He says the place was an auto repair shop many years ago. It looks to me like it was a big garage door that got cinder blocked up to allow for 2 smaller retail showrooms. I explained how it would be a little cheaper for him to let me open it back up to the way it was, rather than the other way with a new lintel and smaller opening. He's fine with that, so Monday we'll have sledgehammers in hand (no saws, wet or dry) and drill some holes along the mortar joints and start smashing. I luv demolition, it makes me feel macho!
Bob might just want to drive his new skid steer up there and knock down that wall fer ya.
__________________
___"Remember You Never Get A Second Chance To Make A First Impression"______________________
Joe
jmic is offline  
Old 02-03-2006, 06:52 PM   #15
Home Improvement Guy
 
ron schenker's Avatar
 
Trade: Renovations contractor
Join Date: Dec 2005
Location: toronto,Canada
Posts: 1,480
Rewards Points: 500

Re: Cinderblock Wall


C'mon up Uncle Bob, I'll buy the beer!
ron schenker is offline  
Old 03-06-2006, 06:30 PM   #16
Home Improvement Guy
 
ron schenker's Avatar
 
Trade: Renovations contractor
Join Date: Dec 2005
Location: toronto,Canada
Posts: 1,480
Rewards Points: 500

Re: Cinderblock Wall


Finally got ok'd for this job last week. Here's a before and during picture.
Attached Thumbnails
Cinderblock Wall-100_2628.jpg  
ron schenker is offline  
Old 03-06-2006, 06:34 PM   #17
Home Improvement Guy
 
ron schenker's Avatar
 
Trade: Renovations contractor
Join Date: Dec 2005
Location: toronto,Canada
Posts: 1,480
Rewards Points: 500

Re: Cinderblock Wall


Here's the before, I couldn't do both pictures on the same post!
Attached Thumbnails
Cinderblock Wall-100_2608.jpg  

Advertisement

ron schenker is offline  


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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 Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Load bearing wall or not??? BMAN Remodeling 26 07-28-2008 06:16 PM
Backyard office, retaining, and privacy wall Team Scream Masonry 8 08-02-2007 10:27 PM
moving centennial wall stacker Masonry 4 10-19-2006 11:12 PM
Roof sagging wall pushed out christy Roofing 5 10-14-2006 08:53 PM
Low (12" or so) brick garden wall questions bindersbee Masonry 8 04-27-2006 07:31 PM

Join Now... It's Fast and FREE!

I am a professional contractor
I am a DIY Homeowner
Drywall Talk is for
PROFESSIONAL CONTRACTORS ONLY!

At DrywallTalk.com we cater exlusivly to professional contractors who make their living as a contractor. Knowing that many homeowners and DIYers are looking for a community to call home, we've created www.DIYChatroom.com DIY Chatroom is full of helpful advices and perfect for DIY homeowners.

Redirecing in 10 seconds
No Thanks
terms of service

Already Have an Account?