These could be made by termite treatment. For on-slab houses, they drill holes in the concrete and inject poison (termites can burrow through concrete). Since the holes would be covered by the flooring they didn’t bother filling them in. You can fill them if you want but there’s no harm in leaving them as well.

Why are there small holes drilled in my foundation?

A weep hole is a small hole that’s drilled on the base of your foundation wall to provide aeration and an escape route for water. The weep hole also does the following: Improves drainage: Rainwater or moisture that gets into the concrete block or brick cavity needs to escape.

How do you fill a small hole in a foundation?

Youtube quote:But it's soft inside so what I want to do is take my trowel and shave it off. Now the foam is still a little soft. So I can push it back into the hole to make room for our mortar.

How do you find hole in foundation?

Go into your crawl space with a box of toothpicks or wooden matches and look for holes on each foundation wall. Anywhere sunlight shines through is a potential entry for mice. Insert a match or toothpick into small holes so the end of the stick is protruding outside.

Why does poured concrete walls have holes?

The holes are for noise and heat insulation. You can also put a few steel reinforcing bars through the holes. Concrete blocks are not load bearing. Steel reinforced concrete pillars and floors should take all the weight.

Is it OK to drill into foundation?

You can, in fact, drill a hole in a concrete interior feature wall armed with nothing more than your trusty rotary drill and a masonry bit—so long as you take care to not burn out the motor of the drill or demolish the bits.

How do you fix a small hole in a concrete foundation?

Step 1: Clean out the hole and make sure that it is free of any loose debris, dust, or dirt. Step 2 (Optional): For a stronger bond between the new concrete and the existing cinderblock/concrete, apply a bonding agent. Step 3: Mix up your concrete repair mortar to a ‘clay’ consistency and apply it to the hole.

How do you seal a hole in a concrete foundation?

Youtube quote:So to patch the hole i ended up going with rapid set concrete mix which sets up pretty quickly which i figured would help me out when i go to patch. This so picked up two bags of that and then mix it

How do you seal a hole in a foundation wall?

How do you seal a hole in a foundation wall?

  1. Using a wire brush, brush clean the cracks and the holes.
  2. Le the hole or the crack dry for quite some time.
  3. Fill the cracks and holes with concrete caulk.
  4. If the hole or crack is too big for concrete caulk to deal with, there are patching materials available.

What are holes in concrete called?

They are usually called tie holes. After the concrete is cured and forms need to be removed their ends protruding out are bent and snapped.

What are bug holes?

A bughole (or pinhole) is a small hole in the surface of a concrete structure caused by the expansion and eventual outgassing of trapped pockets of air in setting concrete. Bugholes are undesirable, as they may compromise the structural integrity of concrete emplacements.

What bugs make holes in concrete?

Pavement ants enter homes and buildings through expansion joints, cracks in the building’s concrete slab, weep holes, gaps, sub-slab heating ducts, around waste pipes, bathroom traps, and other small openings. Pavement ants can also follow trails as far as 30 feet when they’re searching for food.

How do you fix bug holes in concrete?

The number of visible bug holes can be reduced by using smooth forms, free of dents, holes, or build-up, along with the proper form release agent. The right form shape also gives air voids at formed surfaces the opportunity to move upward more freely as it is displaced by the concrete.

What insect eats through concrete?


Summer is when termites breed and chew up homes across the country, but, a highly-invasive species of termite spreading across Florida, called the “Super Bug,” can chew through concrete, plumbing and wood inside a home.

Can you patch holes in concrete?

Most holes can be fixed with a quality mortar mix, although you should use one with a crushed stone aggregate to fill holes over 1 in (2.5 cm) deep. Treat holes as soon as you find them so you can prevent water and rodents from further damaging the concrete and getting into your home.