3
votes
1answer
309 views

How can I fix/polish a slate tile imperfection after it has been laid down and grouted?

Our contractor laid down a tile on our renovated bathroom and somehow did not realized that it was defective (see picture). The defect is some sort of metal mineral (kind of rough) the kind that ...
0
votes
1answer
309 views

Waterproof seal between two submersed pipes

I have an odd problem. Essentially I am working on fabricating a connection between two fiberglass pipes that are intended to be submerged underwater (depth 30ft). No water should make it inside of ...
2
votes
2answers
322 views

What is an appropriate sealer for a Papercrete bench?

I've built a bench out of tires and papercrete two years ago. i've sealed it with lime plaster. in the past two years it held up against 500 m"m of rain in the winter and Mediterranean sun 7 month ...