Ask Experts Questions for FREE Help !
Ask
    project lover's Avatar
    project lover Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Jun 26, 2007, 11:57 AM
    concrete slab sunk toward house under deck
    I have a cedar deck/pergola that sits on a concrete slab. The deck and pergola are attached to the house with lags. A couple of the 4 x 4s suporting the deck (the joists are about 6 inches off the concrete)are situated on a section of concrete that has sunk about 4 inches toward the house's foundation. Short of tearing up the deck to tear out the sunken concrete, is there any other fix for this problem? Would a slab jacker be able to fix that section? Will the sunken crete cause any long term problems? My basement is very dry now and finished. Thank you.
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #2

    Jun 26, 2007, 05:50 PM
    You have mess on your hands. The sinking slab may eventually trap rain water and cause a damp basement. For the immediate issue, if you can get beneth the deck, just add additional 4x4 sistered to the existing 4x4s.
    glavine's Avatar
    glavine Posts: 895, Reputation: 87
    Senior Member
    		  
    #3

    Jun 26, 2007, 08:11 PM
    At some point your going to have to fix the concrete, it sounds like it may not of been poured deep enough in the corner.

    I would temp brace the deck up and take out the concrete in this area and repour it, id go at least 8" deep where the weight is.
    This really isn't a homeowner project here unless you have the concrete cutting tools at your disposal
Not your question? Ask your question View similar questions
 

Add your answer here.


Check out some similar questions!

Leak Under Concrete Slab [ 3 Answers ]

I found out that I have a water leak under my slab floor. Apparantely the leak is between the shutoff out in the yard and the meter(which is located in the hallway utility closet). I hear water gurgling in my ductwork which is also in the slab. Called local plumber and he says I'm looking at...

Concrete pool deck material [ 3 Answers ]

My concrete pool deck was resurfaced 5 years ago by applying material using a hopper,same as doing the knockdown ceiling in a house. I have repaired cracks and want to resurface the cracks with the same knockdown textured finish to blend in with the rest of the deck. I have the hopper and...

Wood Deck over Concrete Patio [ 2 Answers ]

I would like to build a deck over my concrete patio but the problem is I have only about 4 1/2 inches between between slab and top of concrete house slab. Therefore, I can only use 2x4s for supporting the low profile deck. All deck do it yourself books recommend a minimum 2x6 for deck joists. Is...

Construction on concrete slab [ 3 Answers ]

I have a rather large garage (30' x 30') with a concrete slab floor. I want to build a laundry room and bathroom in one corner of the garage. Are there problems I may encounter in doing this?

Posts on concrete deck [ 1 Answers ]

I have a 2nd story concrete deck made with Polydeck... new construction home... and wish to put up railing... Would like to use aluminum balusters that look like wrought iron, probably "Deckorator" line... and Trex post and rail supports... But what would be the best method to attach the Trex posts...

View more questions Search