Ask Jon Eakes

Last Updated: Friday, November 23rd, 2001, Created: Friday, November 23rd, 2001

Filling holes in a floor.

Earlier in this TV segment we installed a threshold between an old and a new floor. In that case we actually cut away to a flat base that allowed us to put our threshold down flat. If you cannot do this or for some reason need to fill in a low spot in a floor, there are several different products that will do the job, depending on how deep the hole is.

If the hole is fairly deep you will need to use a large quantity of filler. Here you are best working with a self-levelling concrete. This stuff flows out in a very plastic manner, if you don't let it sit too long in the bucket, and will feather out to a fine edge. It is good for all kinds of filling, but because of the trouble of mixing it, I only use it for deep or large jobs. It will not hold up outdoors and should be covered with something to protect it, but it makes a good indoor sub-floor.

LePage makes an excellent non-shrinking product called "Exterior Wood Filler" that can fill up to an inch or more thick. Because of it's cost, I will use it where I need about 3/8 in depth but I don't have a big enough expanse to justify the self levelling concrete.

When you have about 1/8th of an inch to fill, I will just use PL Premium adhesive. This is a construction adhesive that dries rock hard, so it will act like both an adhesive and a filler at the same time, but because of it's cost I wouldn't use it to fill a large hole. It is however, the strongest of all three products, once cured.

Keywords: Adhesive, Concrete, Filler, Floors, Threshold

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