Sinking or cracked concrete foundations can be a major issue. However, most small cracks in your concrete foundation are cheap and easy to fix. This article explains what you need for a simple DIY foundation crack repair job.

Using Crack Filler

The most important thing you need is the crack filler obviously. Crack filler comes in many different forms. Caulk tube's are very convenient, but they aren't good value for your money. That is, there isn't much filler, so you go through several tubes when filling a moderately-sized crack. Buying larger tub is nice for filling cracks, putting the crack filler away, and then using it later. Some people make the mistake of trying to use regular concrete mix to fill the foundation cracks. Understandably, they think that using the same concrete mixture that they used when the concrete was originally poured will enable them to create a perfect match.

However, using ready mix concrete in small batches and placing on it in small cracks is not going to create a permanent fix. Regular concrete will probably be too brittle, and it will crack away and fall out of the crack in no time. Concrete crack filler is confused with the flu. This is very important because it makes the filler stickier so it will bond to old, crusty concrete.

Working with Crack Filler

Since it is so sticky, crack filler can be a little bit difficult to work with. You need to wear rubber gloves to protect your fingers. Basically, you can use a putty knife to spread filler into the crack and then scrape the top so it blends in with the surface. Even if you are using a tube, you will need a putty knife to scrape away the excess and create a flat finish. Then, you need to match the concrete finish, if it has a tinted glazed or stain.

Often, if you have a polish concrete finish, you'll need to sand down the newly filled crack. This will help everything blend in and look more natural. It might be hard to perfectly match your glaze or tint because of how the old concrete has faded overtime. Nonetheless, it is better to have a slightly mismatched color then to have an unfilled crack.

As you can see, it is very easy to fill small concrete cracks, but the job can be much more substantial if you wait too long in the crack grows.