Pouring Concrete Wall Against Existing Wall

This is just a quick video for my friend who is building a home. A poured wall is much stronger and generally last many more years than a block wall. The addition of reinforcing steel to either wall system complicates the issue.

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Anyway regardless of whether your house is made of masonry block with a fake stone veneer or is really of stone you cannot pour concrete against the wall unless both share the same footing.

Pouring concrete wall against existing wall.

Allow concrete to cure. If the wall exceeds four feet in height footings should be poured separately. Create contraction joints every 4 6 feet. With no joint footing even if the subsurface was very stable it would not work because water would eventually get between the wall and the patio and undermine the subsurface and then bad things would begin to happen.

Pour footings and wall. Concrete should never be poured up against steel siding and or trim. The poured concrete wall has more mass or interlocking cement paste crystals to resist the cracking force. If you want to build a concrete retaining wall you should consider pouring the wall rather than making it out of concrete blocks.

Pouring a concrete retaining wall is not that difficult and this easy to follow how to guide will show you just what to do. I noticed something in his video that raised a red flag for me so i thought i would rough ou. See below for more information on contraction joints remove forms and install waterproofing and drainage system. Finish the surface of the wall as desired.

The hollow block wall is depending solely on the strength of the thin mortar bed between each concrete block.

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