How To Repair Holes In Outside Foundation Walls
I recently removed a metallic chimney (click here for that project) from the side of my business firm which left me with a dilemma… Later I removed the chimney, I was left with a large (well-nigh 18") hole in my cinderblock/physical foundation that needed to be patched. This commodity will show you how to patch a hole in your cinder cake / concrete foundation.
The steps to repairing and patching a hole in a cinderblock or concrete foundation wall are as follows:
- Step 1: Clean out the pigsty and make sure that it is gratuitous of whatever loose debris, grit, or clay.
- Stride 2 (Optional): For a stronger bond between the new concrete and the existing cinderblock/concrete, apply a bonding agent.
- Pace 3: Mix up your physical repair mortar to a 'dirt' consistency and apply it to the pigsty.
- Footstep four: Apply a physical trowel to smooth out the physical surface and make information technology flush with the surrounding foundation wall.
- Step 5: Pigment the repaired surface area to lucifer the existing foundation color.
If you follow these steps, you'll exist left with a repair that will have your physical/cinderblock foundation looking good as new!
P.S. If you are more than of a visual learner, you can check out my "How to patch a hole in concrete foundation" video on Youtube:
Stride one: Clean out the hole and make certain that it is free of whatsoever loose debris, dust, or clay.
After removing my metal chimney, there was a lot of dirt, debris, and loose concrete chunks left inside the hole. Be sure to remove all of the debris and any "impurities" from the hole. If left in the hole, these 'contaminants' volition weaken the bond between the old concrete and the new concrete that y'all will utilise in Pace iii. This is a quick step, but information technology is very important for the success of the whole repair.
Stride 2 (Optional): For a stronger bond between the new concrete and the existing cinderblock/concrete, apply a bonding amanuensis.
For my repair, I used a concrete bonding agent chosen Weld-Crete and practical it to the surface expanse within the existing pigsty in the foundation. I practical it using a pigment roller which fabricated it easy to apply quickly.
This bonding agent is used to form a stronger bail between the existing physical and new concrete. Although this step is probably not entirely necessary, I had some Weld-Crete leftover from my slab extension projection – and so I figured information technology wouldn't hurt to apply it here. If you desire to see how I used Weld-Crete to extend the concrete slab in my lawn, bank check out the commodity!
Step iii: Mix up your concrete repair mortar to a 'dirt' consistency and apply it to the hole.
To really repair/fill the hole, I chose to use Rapid Set Concrete Mix. Although this rapid setting concrete is a trivial more pricey than standard concrete, it sets up in xv minutes, which makes it much easier to piece of work with for this repair.
Mix up your concrete in a wheelbarrow or bucket using slightly less water than the manufacturer recommends. Past doing this, y'all will be left with concrete that has a "dirt-similar" consistency – which will make information technology easy to work.
In one case your concrete is mixed up, I recommend that y'all grab some gloves so that you can work with your easily to employ the concrete directly to the foundation pigsty. I practical the concrete, handful by scattering, until I filled up around l% of the hole. Make certain that there is no concrete protruding out past the existing wall. – It is Way easier to add more concrete after than effort and grind down backlog concrete that bulges out past your existing foundation wall. Be sure to check this on both the interior side and exterior side of the foundation.
At this betoken, I waited fifteen minutes to let the first layer of concrete harden. If you don't requite the bottom portion of concrete fourth dimension to set up, the boosted weight of the concrete on top will "flatten" the concrete you placed on the lesser – causing it to lose shape.
Once the first "batch" of concrete has had a run a risk to ready and harden, apply physical to the remaining void. At this point, you should be able to apply concrete to the entire foundation wall hole, effectively patching the void.
Pace four: Utilise a physical trowel to smooth out the concrete surface and make it flush with the surrounding foundation wall.
Although you can usually to get a decent concrete stop by using simply your hands (and gloves, of class), I recommend that you ensure that your repair is completely flush with your existing foundation wall by using a concrete trowel. Utilise the concrete trowel to smoothen out any imperfections and blend the new physical into the existing foundation. Basically, go far smoothen.
Do this for both the interior and exterior sides of the repair. At this betoken, only requite the concrete repair time to set-up and dry.
Step five: Paint the repaired area to match the existing foundation color.
In one case you have given your concrete foundation repair sufficient fourth dimension to dry, the terminal step is to simply paint your repair to match the existing foundation color. However, I understand that finding an verbal color match may be difficult. I actually ended upward re-painting my entire foundation for a uniform color/cease. I used my Graco Projection Painter Plus which made this painting process super quick and easy.
After painting, your cinderblock/physical repair project is complete. If y'all follow the steps above, you will be left with a smashing repair that makes your foundation expect good as new!
Bonus tip: I did not apply re-bar or steel mesh to my physical foundation repair, but this may be a proficient additional step to add increased force to your concrete/cinder cake foundation repair.
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If you liked this projection, consider checking out some of my other DIY projects:
How to Build a Fire Pit: How to Build a DIY Burn down Pit Table (And save hundreds of dollars in the procedure!) – (atimprovements.com)
How to Install a DIY wire / Cable Railing: DIY Cable Railing – How to Install Cable Railing Stride-by-Step – (atimprovements.com)
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