Take the 2-minute tour ×
Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. It's 100% free, no registration required.

Some of the walls in my house, have developed cracks, which are 2 to 4mm wide. One crack, runs diagonally, from floor level to about 80% of the wall height, and other cracks run along the window frames. The house is built on a concrete beam and column structure, but apparently the foundation in one corner has sunk a bit, due to heavy construction in close vicinity. The impacted walls, are not load bearing walls.

I am planning to paint my house, and wanted to fix these deep cracks prior to that. I've been told by few people that pressure grouting might be an acceptable solution, and wanted to check. Reading around the web, I see pressure grouting involving drilling big holes (about 2-3cm dia) in the wall, and grouting them, but couldn't figure out the purpose of doing so. Also, I've seen some photographs showing grouting attempts of the foundation itself by pressure-grouting deep holes near foundation. So, the process, and recommendations aren't clear.

Finally, does grouting / pressure-grouting require specialized tools, equipment and skills, or can one attempt this DIY ?

Edit: Forgot to mention that the cracks in question, appear on both sides of the wall, so it is not just a crack in the plaster-work.

Edit2: Building is not old - about 7 years. Cracks developed about 3 years back, and I think I've not seen them grow in the last 1 year.

share|improve this question
    
how old is the building, when did the cracks develop, when did the cracks stop developing? –  DMoore Apr 26 '13 at 17:03
    
@DMoore, added the information to my question. –  icarus74 Apr 26 '13 at 18:17
    
If they are still growing, then this needs to be answered by a structural engineer. –  DA01 Apr 26 '13 at 18:57

1 Answer 1

up vote 1 down vote accepted

It is a potential solution. Buildings will settle and they usually do around 2-5 years of structure being built.

The question is, is this normal structure settling or does this building have some issue that will cause it to move more. It hasn't moved in the past year so I could really go either way with this.

Pressure grouting could work. It will allow very little movement but some. The worst case scenario is you have hairline cracks a year or a few years later after doing this. If water isn't an issue and you can live with the small cracks than I give this a strong maybe.

I would normally suggest going with an epoxy solution that would be stronger and have more flex.

share|improve this answer
    
Thanks @DMoore. From what I understand, epoxy-resin filling would not be a structural aid to the wall, but only act as a "filler" right ? Is it the same for the pressure grouting with the cement based mix ? –  icarus74 Apr 27 '13 at 5:20
    
Epoxy is stronger than concrete, so it would be a structural aid. Urethane is also an alternative due to your building could be still shifting. I would call a few foundation companies to get quotes. See what they would use. See what type of warranty you have with different products. From experience you don't save a ton of money doing this yourself. I have a hard to giving pointed advice because of possible movement. Paint your house a light color though. –  DMoore Apr 27 '13 at 21:55

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.