Jump to content
CBR1100XX.org Forum

Garage Floor Musings


rockmeupto125

Recommended Posts

I'm trying to get some work done in the garage, and I'm just so frustrated. I can't do much more with my left arm than hold things, and pushing and pulling on tool cabs and other wheeled items that should be so easy to move is increasingly frustrating.

The concrete floor in the garage is rapidly aging and its hard to work out there. Heck, the whole garage is in fair condition at best. The doors are damaged and the structure took a real beating in the flood two years ago. But its what I got, so in August I put a new tin roof on it...it leaked like a sieve. Now that I've got that money invested in it, I really should do something about the floor to make it usable, so here's the situation.

The floor is concrete. One side of the garage has a lot of erosion, and the other side has cracks every few feet. The floor is raised and uneven, and this is largely a result of the flooding. One option would be to pour a new concrete floor over the old one. I believe the old floor will continue to shift, and eventually crack the new pour. So my guess is that I'd need to pour at least 4 inches of reinforced concrete if I wanted it to last more than 2 or 3 years. 20x24 makes that about 6 yards....so about $500 plus $100 in miscellaneous cost....scut wood for forms and renting a power trowel, for instance. Then I'd have to build some ramps as 4 inches raise in the floor is too much to hop over on a regular basis.

Another option.....lay some pressure treated 2x4 down 24 on center and put some manufactured subflooring over it. I've used AdvanTech in the house and like it..its strong and has tongue and groove edges. Its water resistant as well...I would even consider laying it directly on the concrete. There's never damp floor in the garage unless it leaks from the roof (or floods). If I lay 2x4 it would raise the floor 2 1/4, and with the OSB right on the floor, it would be only 3/4 inch raise...enough so a ramp wouldn't be necessary, or with the 2 1/4 raise, much smaller than the concrete option. Advantech is pricey, so its near $650-$700 once all the receipts are totaled.

I figure I need this to last for 10 years, and I think either option would do that.

But this is posted here requesting other's expertise and opinions, so please..........

Link to comment
Share on other sites

I'd like to get this done by the end of October.

An additional option is the DRIcore flooring...2' squares with plastic backing and standoffs that allow an airspace underneath. A little more money with the plus of not having to fool with a separate moisture barrier, and I believe they are tongue and groove on all four sides, which would at least lend some greater stability to the 2x2 size. I thought the AdvanTech 4x8 would average out the hills and valleys of the existing floor, whereby the 2x2 squares would assume more of the existing topography. That's $1.50 a square foot, so that's $750. Regardless of what I do, its going to be between $600 and $900 by any estimate.

I don't expect this to be flat and level...just smooth enough to work with. The DRIcore is rated 4000 pounds per square foot, so loading isn't a concern.

Link to comment
Share on other sites

I think you will be much happier with concrete. Wether you do 2" fiber reinforced or just a self leveler.

I would say it will hold up much better than the other stuff but then again I don't have any experience with the new stuff.

As for a ramp that is an easy fix.

Link to comment
Share on other sites

  • 3 weeks later...

Let me see....


http://indecorativeconcrete.com/?page_id=1268

Make no mistake…there are certain situations when it’s best to tear out existing concrete and start anew by pouring on a compacted stone or sand base. For instance, if you have large working cracks in your slab and the concrete has settled to the point that it’s at several different levels, you should remove it. Likewise, if tree roots are causing your existing concrete to heave, then it’s best to tear out the concrete, resolve the root problems, and start fresh. Perhaps door thresholds or stair riser heights are an issue and you simply can’t pour any higher without creating problems. Any of these are good reasons to remove the existing concrete and start from scratch.However, if your concrete is relatively sound and raising its elevation a few inches would not create problems, then you can pour new concrete directly over the old. Well, maybe not directly over the old. You’ll want to install a bond breaker so the two slabs do not bond to each other.

As usual, there are caveats.

Link to comment
Share on other sites

  • 1 month later...

Did you ever go anywhere with this?

I notice I'm late but, I'll add, if there is no issues with raising the elevation... then I would suggest a rubblization and top pour. Bonded. http://en.wikipedia.org/wiki/Rubblization

We tested this process a few years ago, on a section of roadway that was originally built on the native soil that honestly is 100% expansive Clay, think pottery clay. The results have been unbelievable.... I never would have thought it would have worked this good.

Using this method I would speculate you could pour a top pad at half the depth... say 2" and have a floor that even better than a single slab 4"

Rent a Air compressor and Jackhammer.. break it all up into fairly even sizes, and pour over it. Done.

And if door Height, etc, is really an issue don't forget, raising a detached garage up just a few inches is easy.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

Terms of Use