Agree with jon. If the baseboard guy is doing shoe, he is aware that the engineered wood has to have room to move---the installation instructions for that type of flooring specify leaving at least 1/4" to 1/2" space between the edges of the wood and the walls. That often means adding shoe molding to the baseboard. The shoe molding is attached to the baseboard ---NOT the flooring---to allow for the necessary room for the engineered wood to move due to humidity/seasonal changes.

It’s not just your house, it’s every house that doesn’t have a molding to cover the bottom of the baseboard. Crisp square baseboard is the “in” thing right now, but people don’t realize how hard this is to accomplish without gaps. The proper way for that to be trimmed is with a shoe mold or quarter-round to cover the gaps. No floor is completely level. Your wide baseboard will not flex with the contours of your floor. A shoe or quarter will. You have two options: Live with the gaps or trim it out with shoe/quarter round. I lost a very large sell not long ago because of this. A lady was asking me if our floor would work in this scenario. I told her it really had nothing to do with the flooring, but the flatness to level of her sub-floor. I informed her that she would have gaps and that the only variable would be how large those gaps would be. She didn’t like the reality check and told me she would be buying her flooring from someone else… oh well Your builder could get a wider base, scribe the contour and cut the bottom to fit if it's really bothering you that much. Alan Ward - WeShipFloors.com

Oh no! I should ask the installer how he prepped the floor and if he used self leveling compound to flatten it? Also, there were small size areas all along perimeter of condo about the size of a dime of broken concrete where nails were removed from concrete from carpet tack strip. Is it possible this could be one of the reasons why my baseboard does not touch the top of floor.? I am almost certain he did not fill those holes along the perimeter of my entire floor, should he have done that? I know they will not remove entire floor and will tell me it's supposed to be like that or, it's expected. So upset i trusted that they knew what they were doing (installers from the store where I purchased). I wonder if removing the boards along the perimeter and them putting the compound there would help?? I can ask them to do that if you think it will. Please give your opinion thanks.

Can I caulk this instead? It’s for a fireplace and the client doesn’t want baseboard on it. Thanks!