When I pulled up my rug for cleaning, I found a nice hardwood floor under it, but the floor had a number of white water stains. How can I clean them off?
There are two ways to try. One is to mix one part bleach with three parts water, and paint it on the whole floor. The other is to rub with Mr. Clean Magic Eraser, and I do mean rub, hard. To prepare, soak the eraser sponge, then squeeze it as dry as possible before rubbing. If the stains are black, the floor must be sanded to the bare wood and refinished.
My basement foundation has two leaky areas. One is a vertical crack about 4 feet long and 1/8 inch wide. The other leak comes from a small metal rod which has rusted and lets water in. The rod, which runs through the foundation, seems to be an artifact of when the foundation was poured and was part of the forms. Last week, an electrician suggested that hydraulic cement may stop the leaks. How does it work and how do you apply it properly? What about those waterproof paints?
Yes, hydraulic cement can work in these situations. It expands as it sets, which is its best attribute. For the long vertical crack or joint, secure a piece of wood inside or out to hold back the hydraulic cement that you will try to stuff deeply into the crack. It will make a good seal. For the remains of the wires or rods in the opening, you can use them as reinforcing to help keep the mortar in place. I think a good mortar will work here better than hydraulic cement.