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

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

Reply
 
Thread Tools Search this Thread Display Modes
Old 07-23-2013, 09:49 PM   #1
Newbie
 
Join Date: Jul 2013
Posts: 3
Rewards Points: 10
Default

Repairing Cracks in Masonry Wall


I am considering purchasing a house which has some cracks in the walls. The two locations of concern are shown in the pictures below. The inspector said that both of them are caused by rusting steel beams which are expanding as the rust builds up on their surfaces and exerting pressure on the surrounding masonry structure leading to the cracking. It is quite obvious that the seller has tried to disguise the cracks, but they have not really being repaired and the water infiltration which is causing the rusting has not been addressed. The first location is the corner of the garage door. The second location is the corner of a bay window.

What is the proper way to repair these and is this a DIY project? I am fairly good fixing stuff, but this could be some serious structural work, especially on the bay window, so I am unsure if I should do it myself or leave it to the professionals.

I apologize for the small images -- I had to shrink them to fit the requirements of the website.
Attached Images
  

epsilono is offline   Reply With Quote
Old 07-23-2013, 10:15 PM   #2
Member
 
Join Date: Jun 2009
Location: atl & hilton head
Posts: 3,285
Rewards Points: 2,152
Default

Repairing Cracks in Masonry Wall


imo, those aren't crks that should cause 1 to refrain from buying the house of their dreams are those the ' cracks in the walls ' to which you referred ? they aren't !

masons persist in filling the joint on top of the garage lintel w/mortar at the face,,, it should be a sealant which will flex.

can't tell above the window if there's a membrane or not above the bay's copper roof,,, might just need some repointing,,, an engineer is ALWAYS a better choice than an ' inspector '

apology accepted

stadry is offline   Reply With Quote
Old 07-23-2013, 10:43 PM   #3
Newbie
 
Join Date: Jul 2013
Posts: 3
Rewards Points: 10
Default

Repairing Cracks in Masonry Wall


Thanks for the insight. That certainly is good to hear.

I was thinking of removing the mortar between the lintel and the first layer of bricks, cleaning up the rust as much as possible through that tiny opening, priming, painting and then filling with a sealant rather than mortar.

I do not know if there is a membrane or not above the bay window. Unfortunately I am not at the property, so I cannot find that out. I would like to make sure that whatever process has caused the crack gets arrested, so that it does not continue.

As for the inspector vs engineer -- you are totally right. I intended to use an engineer, but then I could not get the date I needed for the inspection, so I ended up using whoever was available. Next time I will plan better and use an engineer.
epsilono is offline   Reply With Quote
Old 07-24-2013, 04:24 AM   #4
Member
 
Join Date: Jun 2009
Location: atl & hilton head
Posts: 3,285
Rewards Points: 2,152
Default

Repairing Cracks in Masonry Wall


bought a house w/active leaking & standing wtr wet bsmt +& the front wall's bowing 6" in 30' but we'll have that repaired in a week.

here's the point - buy anything IF you can do 1 of 2 things - either name the price OR the terms,,, we got to do both on this property,,, i expect after we get the needed work done & sell it, we'd still legally have 3 months to pay the seller

Last edited by stadry; 07-24-2013 at 04:48 AM.
stadry is offline   Reply With Quote
Old 07-24-2013, 09:07 AM   #5
Member
 
Join Date: Apr 2012
Location: UK
Posts: 713
Rewards Points: 500
Default

Repairing Cracks in Masonry Wall


The crack adjacent to the garage door will indeed be caused by the rusting of the steel beam, and the subsequent lifting of the adjacent brickwork.

But the crack adjacent to the bay window seems more consistent with slight settlement of the lintel over the bay, rather than steelwork rusting.
tony.g is offline   Reply With Quote
Old 07-24-2013, 08:33 PM   #6
Newbie
 
Join Date: Jul 2013
Posts: 3
Rewards Points: 10
Default

Repairing Cracks in Masonry Wall


Thanks for the insight tony.g

I would have not thought of settlement. Is there anything I could or should do if this is caused by settlement? There might be some traces of cracking on the other side of the bay window, but nothing that seemed serious to me (picture of other side attached).
Attached Images
 
epsilono is offline   Reply With Quote
Old 07-25-2013, 05:09 AM   #7
Member
 
Join Date: Apr 2012
Location: UK
Posts: 713
Rewards Points: 500
Default

Repairing Cracks in Masonry Wall


hi epsilono,
asuming the house is timber-frame, with brick outer skin, the lintel over the bay window may look something like this;

http://iglintels.com/lintels/standar...frame-lintels/

If the lintel is too small for the span, or if it has not been adequately clipped back to the framework (note the little clip on the OSB) then it can sag slightly downwards under the weight of the brickwork. This causes the characteristic diagonal cracking above the opening.
Probably not a DIY job, unless you're really committed.
tony.g is offline   Reply With Quote
Old 07-25-2013, 05:29 AM   #8
Member
 
Join Date: Jun 2009
Location: atl & hilton head
Posts: 3,285
Rewards Points: 2,152
Default

Repairing Cracks in Masonry Wall


been awhile since i've built houses but, 10yrs ago, we used 3/8" steel angle iron for window lintels in brick-faced structures & pre-cast conc over doors,,, never blt an brick-fac'd garages ( attach'd or free-standing ) so can't address this particular issue HOWEVER any structural PE would find it a piece of cake.

many of us have more experience than we desire w/undersize lintels particularly dble car garages like mine

that clip onto OSB doesn't sound very reassuring if structural integrity is needed but that just may be me
stadry is offline   Reply With Quote
Old 07-25-2013, 06:20 AM   #9
Member
 
Join Date: Apr 2012
Location: UK
Posts: 713
Rewards Points: 500
Default

Repairing Cracks in Masonry Wall


Quote:
Originally Posted by itsreallyconc View Post




that clip onto OSB doesn't sound very reassuring if structural integrity is needed but that just may be me
The clip is primarily to stop the lintel twisting outwards; there is also a timber packing piece behind as well. The bricklayers are supposed to temporarily prop the lintels while the brickwork sets - maybe they didn't in this case.
Or else maybe the lintel is just too shallow for the span?

tony.g is offline   Reply With Quote
Reply


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 Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Cutting through masonry wall mwpiper Remodeling 4 04-17-2010 10:30 AM
Advice on retaining wall replacement (pics inside) eastie Building & Construction 0 04-05-2010 10:32 AM
cracks on internal wall bozron Building & Construction 4 04-10-2009 01:22 PM
How to mount cables on masonry wall without conduits? dave.murphy Electrical 5 01-24-2007 04:19 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.