Rod Hole Repair

What Is Rod Hole Repair? Call 248-834-0050

We are going to talk about a foundation problem that can happen with poured concrete basement walls. Concrete is poured into wooden forms that are held together with metal rods. The rod consists of a pipe and a pencil rod. These pencil rods keep the walls from spreading out under tons of pressure from the concrete. The further down the rod hole goes in the wall the higher the pressure is-caused by liquid concrete pushing out towards the forms.








This picture is where we are just looking for something leaking, Then we found a rod hole leaking plus being on top of a crack.


This is what we found. A crack and several rod holes leaking on this wall. We ended up having to remove a bit more drywall.



Since we know how to finish drywall, we can fix up the holes before we go.

After the wall is poured and the concrete set up, and is hard to the touch, the wall is ready to stand by itself. At this point the carpenters who erected the forms call in the crane to remove the forms. The forms are very heavy. The forms get loosened up and pulled away from the concrete by the crane and put back on the truck. Meanwhile the concrete is still moist but hard. The pencil rods are removed from the pipes. Some people call these “black hole rod”.

The concrete wall now sits for a period of about two weeks before they’re actually hard enough keep the dirt from caving in from the outside. There are holes in the concrete at regular points where the wood form ties were. The carpenters put a swipe of hydraulic cement over the rod hole on the outside wall in order to fill it up. Then they spray something called “damp proofing” on the concrete to prevent soil contact from damaging the concrete itself. This is called “spalling” (The same thing goes for bricks, where the masonry joints will be dissolved by the minerals in the soil.) Then, at this point, the drain tile and pea gravel is set down at the bottom of the wall.

The inspector comes in from the city and inspects the entire project to see if everything is up to code. If the foundation wall is up to code, then the heavy equipment operators will back fill the outside of the foundation wall with the dirt dug out for the basement. Now the entire house is framed-in, along with the windows, the roof, the overhangs, and the bricks. Next comes the
drywall, electrical and plumbing, etc. Then the basement floor is poured and smoothed out. At this point, the inside walls also receive a swipe of hydraulic cement to cover up the rod holes. Then a coating of dissolved limestone is sprayed over the inside of the foundation walls for the simple reason of hiding defects. This is a thing done almost exclusively in the Detroit area.










These are a couple of other rod holes we found on jobs. We do a ton of rod holes. Sometimes these holes are hiding behind a stud like this one.We guarantee the repair to last 100%.

Basement waterproofing rod hole repair


This rod hole is in the middle of getting some work.
After the family lives in the house for some years, they may begin to notice a problem with a basement wall. The hydraulic cement that was used to fill the rod hole, begins to shrink. (Which is what hydraulic cement is known to do.) And it keeps shrinking, and it doesn’t stop shrinking. It does not shrink very fast, just a few thousandths of an inch every year. It doesn’t take many years however, for the hydraulic cement to shrink enough to allow water to pass through from the outside of the wall to the inside. It’s a very simple process; water flows. So whether the house has a finished basement or unfinished, a rod hole will shrink and open up and allow water to come into the basement. That’s where we get involved. We have proprietary ways to keep the water from entering the inside of the wall and do this foundation repair.


The Following Picture Is A Rod Hole Leaking Behind A Circuit Box

Lot of houses have this problem. A rod hole leaking behind the power box. We have to work on these without dis-connecting the power. There is always live 220 volts in these boxes even if you shut off all the switches. You can see where the water has run down the wall behind the box. We fix quite a few of these. If you see water running down below a box like this maybe you should give us a call. Electricity and water don’t mix for your safety and fire safety because this water can get into the box itself.

This is what it looks like when a rod hole is leaking under the circuit box or power box

This is what it looks like when a rod hole is leaking under the circuit box or power box


Since eventual leaking of rod holes is quite common, I always tell people that before you do a finished basement you should give us a call to take care of the rod holes in advance of causing a lot of trouble. Believe me it’s a lot of work to tear out drywall, studs, cabinets and bathroom fixtures, bars and kitchens to try to get at this rod hole leak. It is much easier to do it before you start your project. It would be important to basement waterproof any place where there is going to be cabinetry or plumbing fixtures, such as in kitchens and bathrooms. Make sure you look at our testimonial page too. So please call us at 248-834-0050. We will take good care of your job, and we will give you a guarantee.

Author: Robert B McGuire