Filling in knotholes in flooring. The problem will be the epoxy oozing underneath the floor.
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Retain the cap to use if you have any leftover epoxy.
How to fill knot holes in wood flooring. If a leveling type liquid is used he will need to dam up the bottom of the knots prior to filling. Filling cracks and knot holes in wood floor. You can find latex floor filler in a range of colors at any store that sells flooring materials and its the default choice of flooring professionals.
Maple floors have dark spots and oak floors have light sections and all floors have at least one dark knot. Thats what i used. Once clean trowel the cement or epoxy into the void with a slapping motion coming at it from multiple angles.
Stir the epoxy with the enclosed wooden stick until the glue is thoroughly mixed should appear cloudy and all one color pour or spoon the epoxy into the voids holes or knots. Joe mentioned inserting a knot to fill the hole or you could cut out the hole and make a plug with some scrap wood that has similar grain to surrounding area. Good news is that each time takes less.
Use your eyeballs not the name of the filler to guide you. This forces the cement or epoxy into all the cracks and grooves that cant be seen from the top of the floor board. If you are filling knots use an ebony fill or tint a small amount of your red oak fill.
The epoxy also strengthens the weak parts of the floor. If he has not laid the floor yet he can put tape on the bottom of the holes to seal them up. If the holes are big especially on the bottom you may have to put it on 2 or 3 times.
If you use poly you will have to put a little at a time and let it dry before you add more. Depress the plungers and squeeze the two part epoxy into the packaging mixing tray. George i dont know how large the knothole is but i would think a black hole in a tabletop would be noticeable.
You can use this type of filler for spot filling nail holes and gaps as well as for filling an entire floor prior to sanding. Spinkle in a little saw dust on the exposed tape to match the color of the floor. Regardless of what you use to fill the holes start by making sure you have vacuumed out the void thoroughly.
Ordinary man hitting a hardwood floor with a mallet. Thats why its important to use a looser epoxy mixture for this since a good amount of it will not only fill the hole but also absorb into the surrounding wood thereby strengthening it. As long as the floor is tight to the subfloor the system 3 epoxy will work fine.
Water based dries in minutes and you can add more and best of all no oder. But for the most part the knot is now completely stabilized by the epoxy fill. As a retired builder i have filled knot holes with anything from wood putty to mixing sawdust with glue to just water based poly.
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