Disintegrating Cinder Blocks - Concrete, Stone & Masonry - DIY Chatroom Home Improvement Forum
Advertisement


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Concrete, Stone & Masonry


CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Like Tree1Likes
Reply
 
Thread Tools Display Modes
Old 03-20-2017, 07:12 AM   #1
Member
 
Join Date: Dec 2008
Posts: 279
Rewards Points: 304
Default

Disintegrating Cinder Blocks


My garage is built on a row of cinder blocks, which sits on a floating concrete pad. There a are five or six of the cinder blocks, along the side I park my car, that seem to be slowing disintegrating. I can scratch the surfaces with my finger nail and dust and small pieces come off. One can easily see the surface difference from those blocks to the good ones. I suspect this might be due to winter salt runoff from my car although they never seem to be wet. Right now, they seem to be strong, and not too eroded, so I am wondering if there anything thing I can do to stop the powdering and flaking off process. Perhaps paint them with concrete paint? Some other solution? Thanks for your help.

Advertisement

polarzak is offline   Reply With Quote
Old 03-20-2017, 08:07 AM   #2
Member
 
Join Date: Nov 2011
Location: Hartfield VA
Posts: 34,440
Rewards Points: 14,010
Default

Re: Disintegrating Cinder Blocks


Post some pictures both inside and out.
Far more often the issue is caused on the outside and is showing through on the inside.
Lack of roof overhang, no gutters, no drain tile, no slope on grade away from the outside wall are all common issues.

Advertisement

__________________
When posting in forums, letting us know your location will help others give better feedback/advice/solutions to your questions
joecaption is offline   Reply With Quote
Old 03-20-2017, 08:46 AM   #3
Member
 
Join Date: Dec 2008
Posts: 279
Rewards Points: 304
Default

Re: Disintegrating Cinder Blocks


Quote:
Originally Posted by joecaption View Post
Post some pictures both inside and out.
Far more often the issue is caused on the outside and is showing through on the inside.
Lack of roof overhang, no gutters, no drain tile, no slope on grade away from the outside wall are all common issues.
Thanks for the reply. I will get some picture this afternoon. The outside of the blocks is perfect, and the area rarely, if ever gets wet on the outside. Plenty of over hang and gutters. Frankly, the other side of the garage faces north, and would get most rain water outside, and the blocks over there are fine. There is plenty of drain tile as the garage is only two feet from the house, (poured basement) and it is those garage blocks that are the problem. No drain tile on the other three sides of the garage, and the blocks are fine there. Anyway, I will post a couple of pictures.
polarzak is offline   Reply With Quote
 
Old 03-20-2017, 12:33 PM   #4
Member
 
Join Date: Dec 2008
Posts: 279
Rewards Points: 304
Default

Re: Disintegrating Cinder Blocks


Here are a couple of pictures. The first is inside, where the problem is, and the second is outside, where there is some erosion starting.
Attached Thumbnails
Disintegrating Cinder Blocks-inside.jpg   Disintegrating Cinder Blocks-outside.jpg  
polarzak is offline   Reply With Quote
Old 03-20-2017, 04:08 PM   #5
Usually Confused
 
lenaitch's Avatar
 
Join Date: Feb 2014
Location: Central Ontario, Canada
Posts: 1,917
Rewards Points: 1,984
Default

Re: Disintegrating Cinder Blocks


The inside shot indicates significant moisture exposure in the blocks, framing and the bit of osb that is visible. I don't know where it coming from but it is obviously present. Perhaps wicking up from the soil? If there is no moisture barrier between the block and framing it is going to continue wicking.

We are awash in salt here during the winter and don't experience that kind of damage.
lenaitch is offline   Reply With Quote
The Following User Says Thank You to lenaitch For This Useful Post:
polarzak (03-20-2017)
Old 03-20-2017, 04:42 PM   #6
Member
 
Join Date: Dec 2008
Posts: 279
Rewards Points: 304
Default

Re: Disintegrating Cinder Blocks


Don't know were the moisture would be coming from, as it is the side of the garage least exposed on the outside. On the inside, it is closest to and almost the length of the car, so I thought it was runoff. You can see a salt stain on the floor near the block. Is there anything I can do to stop this, or slow it down? The garage is 30 years old, and in excellent shape other than these few cinder blocks. BTW, I am in southern Ontario, also awash in road salt.

Last edited by polarzak; 03-20-2017 at 04:44 PM.
polarzak is offline   Reply With Quote
Old 03-20-2017, 05:12 PM   #7
Member
 
Join Date: May 2012
Location: Sarasota,Florida
Posts: 2,912
Rewards Points: 3,724
Default

Re: Disintegrating Cinder Blocks


Looks like salt damage from the runoff of your car, you can try a sealer but the damage has been done.
Canarywood1 is offline   Reply With Quote
The Following User Says Thank You to Canarywood1 For This Useful Post:
polarzak (03-21-2017)
Old 03-20-2017, 05:42 PM   #8
Member
 
Join Date: Sep 2012
Posts: 6,136
Rewards Points: 1,684
Default

Re: Disintegrating Cinder Blocks


If that were mine I just may very well try a power wash, re-point any mortar joints the need be then Parge the concrete blocks.
SeniorSitizen is online now   Reply With Quote
The Following User Says Thank You to SeniorSitizen For This Useful Post:
polarzak (03-21-2017)
Old 03-21-2017, 05:15 AM   #9
Member
 
Join Date: Dec 2008
Posts: 279
Rewards Points: 304
Default

Re: Disintegrating Cinder Blocks


Quote:
Originally Posted by SeniorSitizen View Post
If that were mine I just may very well try a power wash, re-point any mortar joints the need be then Parge the concrete blocks.
The mortar joints seem unaffected. Rather than "parging", would you think a good cleanup and a coat of concrete sealer paint, as suggested by Canarywood1, would suffice?
Thanks.
polarzak is offline   Reply With Quote
Old 03-21-2017, 07:57 AM   #10
Member
 
Join Date: Sep 2012
Posts: 6,136
Rewards Points: 1,684
Default

Re: Disintegrating Cinder Blocks


Quote:
Originally Posted by polarzak View Post
The mortar joints seem unaffected. Rather than "parging", would you think a good cleanup and a coat of concrete sealer paint, as suggested by Canarywood1, would suffice?
Thanks.
A concrete floor enamel would be worth a try but I would follow with a good thick coat of hot paraffin as the sealer. If some old man doesn't like the looks of that in about a hundred years he can sand blast it and do it his way.
SeniorSitizen is online now   Reply With Quote
The Following User Says Thank You to SeniorSitizen For This Useful Post:
polarzak (03-21-2017)
Old 03-21-2017, 08:18 AM   #11
Member
 
Join Date: Dec 2008
Posts: 279
Rewards Points: 304
Default

Re: Disintegrating Cinder Blocks


Quote:
Originally Posted by SeniorSitizen View Post
A concrete floor enamel would be worth a try but I would follow with a good thick coat of hot paraffin as the sealer. If some old man doesn't like the looks of that in about a hundred years he can sand blast it and do it his way.
Thanks. I will give it a try. What happens in a hundred years is not my problem. LOL
polarzak is offline   Reply With Quote
Old 03-21-2017, 06:12 PM   #12
Member
 
Join Date: May 2012
Location: Sarasota,Florida
Posts: 2,912
Rewards Points: 3,724
Default

Re: Disintegrating Cinder Blocks


Quote:
Originally Posted by polarzak View Post
Thanks. I will give it a try. What happens in a hundred years is not my problem. LOL


Geez, just when you think you've heard it all , someone comes along and blows you out of the water with a home grown fix, the last thing you want to do is put paraffin on those CMU's, if you want to use a sealer use a Silane/Siloxane penetrating sealer.
stadry likes this.
Canarywood1 is offline   Reply With Quote
Old 03-21-2017, 08:17 PM   #13
Member
 
Join Date: Sep 2012
Posts: 6,136
Rewards Points: 1,684
Default

Re: Disintegrating Cinder Blocks


Well DUH, I didn't say the paraffin was going on the CMU's, it goes on the paint.
SeniorSitizen is online now   Reply With Quote
Old 03-21-2017, 08:22 PM   #14
Member
 
Gymschu's Avatar
 
Join Date: Dec 2010
Location: Eastern Ohio (heart of Appalachia)
Posts: 5,202
Rewards Points: 932
Default

Re: Disintegrating Cinder Blocks


Before painting, apply some Loxon Primer. It will give some "bite" for your topcoats and act as a bit of a binder to hold the concrete together, or, at least keep it from crumbling more.
Attached Images
 
__________________
Giving us your general location helps us better help you!
Gymschu is offline   Reply With Quote
Old 03-21-2017, 08:43 PM   #15
Usually Confused
 
lenaitch's Avatar
 
Join Date: Feb 2014
Location: Central Ontario, Canada
Posts: 1,917
Rewards Points: 1,984
Default

Re: Disintegrating Cinder Blocks


Quote:
Originally Posted by polarzak View Post
The mortar joints seem unaffected. Rather than "parging", would you think a good cleanup and a coat of concrete sealer paint, as suggested by Canarywood1, would suffice?
Thanks.
I'm not convinced parging will do much other than making it look better. Certainly a good power wash to flush as much salt out as you can, then sealing it. Do you notice run off from your vehicles heading for that wall because the floor is not level? You might want to put some wood sealer on the framing and OSB in that area as well.

You can't easily fix it - all you can do is try to keep it from getting worse.

Advertisement

lenaitch is offline   Reply With Quote
Reply


Thread Tools
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 Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Ran into cinder blocks when running nail-down flooring joeh Flooring 0 02-10-2012 11:37 AM
Can cinder blocks be ground and used for gravel drive? Bill007 Building & Construction 3 06-20-2011 09:55 AM
How to prevent cinder blocks from "popping out" Red Squirrel Building & Construction 4 03-21-2010 09:11 PM
heat loss through hollow cinder blocks diy4life Building & Construction 11 11-19-2009 10:37 AM
cinder blocks under tub? Leoskee Building & Construction 8 09-03-2009 04:52 PM




Top of Page | View New Posts

 

Search Engine Friendly URLs by vBSEO 3.6.1