Just bought house. Previous owners did some bad renovations by themselves. I noticed lots of bugs coming in. Figured out the wooden kitchen/garage adjustable door threshold was screwed down all the way. Got down there to raise it and realized when they did kitchen tile, they mortared against the threshold, in it's tightened down position. The grout line is about 1/4 inch wide, all along the threshold.
Then they filled the adjustable screw head with grout so nobody could adjust it up and break the grout line/threshold connection. Except the screw closest to hinge, it doesn't have grout in it, and it's raised flush against the door bottom like it's supposed to be. Then the other three are all tightened down.
I don't know if you're supposed to tile flush to the threshold edge or grouting to the edge is better, if they did it wrong or not.
I tried scratching the screw head grout with a screwdriver and a dental tool but nothing came off. Any ideas for that, short of demolishing it to get it out?
Would using a dremel and thin cutting wheel break the grout cleanly along threshold? Or will it break up the 1/4 channel and I'll have to re-grout that part, hoping to match the color? I've never grouted before and don't really want to get into it. I'm terrible at painting and caulking so probably won't do well with grouting.
Or any other ideas? Thanks!