1. I bought T Molding and ask how to install. The instruction tells me that I should drill hole in slab concrete, set plastic anchor and screw metal track with slab, then pull in T molding. I went to Home Depot/Low's, One service rep told me that drill 1/4" hole, then put track on it and hammer screw down, don't need plastic anchor. Another rep told me that use extra strength liquid nail to glue metal track with slab concrete, wait 2-3 days for solid bond, then pull down T Modeling. There are three methods so far, which one I should choose? Is there any other option and how difficult to drill hole in concrete slab? Also, if I have to drill holes in concrete slab, should I rent/buy an impact drill or use regular drill?
2. Can I use marble threshould between bath Tile and room Laminate? Originally, my room is carpet, there is marble threshold between them, but marble is set at same level with tile, now I have to put marble on laminate floor and it will be much higher than tile (laminate is already higher than tile), because I am afraid leak water. How to install between? How to cut marble? I see marble threshould in Home Depot, but all are broken. Where can I buy marble shreshold, which will cut by store?

Thanks

 

You will need a carbide tipped mason drill - dewalt makes some really nice ones, but others are out there. You don't necessarily need a hammer drill, but it depends on the concrete slab. I would suggest that you drill and use plastic anchors. The anchors make it easier to screw into the concrete. Forget the liquid nails as you would still need to fasten the strip with screws. If you want to glue, see if you can find a carpet installation supply store - they sell pad and other accessories only, not actual flooring. Ask if they carry a product called Chemrex. It is used to glue carpet tack strips to concrete and once dry, is near impossible to get loose without a hammer and chisel. Comes in a tube like caulk and to activate, you mist it with water. Set your molding into it and tape in place for 2 hours. No drill, not plugs, no plastic strip.

 

Thanks.
So I can use regular drill with mason drill bit?

 

Try it with a regular drill, if it doesn't work, you will need to get or borrow a hammer drill.