A family member has this fiberglass utility sink in their laundry room (please see pics). They said is freely moves back/forth and sideways. Water was leaking every time they use the sink. It was literally just "dropped in" and not clamped.to the counter in any way. The only thing that was trying to hold it in place was the drain connection! There were no mounting holes at the corners, no J or U channels underneath and no clamps or clips on the under-side. The only identification I could find is this number printed on the tub L010515-A16. A Google search on this number did not come up with anything. Sink is 22"x25", counter hole is 19-3/4"x22-3/4". Looking for advice on how to clamp this. Thank you in advance. [img]https://cimg4.ibsrv.net/gimg/www.doityourselft.com-vbulletin/448x336/img_2399_web_small_bd9499e5ff644f459cbe9865ef85a0491b53187e.jpg[/img] [img]https://cimg8.ibsrv.net/gimg/www.doityourselft.com-vbulletin/336x448/img_2395_web_small_9da88e4153bac5f30f083815916b21bd00419f15.jpg[/img] [img]https://cimg9.ibsrv.net/gimg/www.doityourselft.com-vbulletin/336x448/img_2405_web_small_6161962e0e25d4f6df2abfa328a21ea880f9b4a5.jpg[/img]

I am replacing a 47 year old cracked and chipped cast iron porcelain bathtub with a Acrylic tub. The house is a concrete slab foundation. When I research installation, it states to use a 30 LB felt pad, but they don't sell the pad and I can't find one. Are they talking about 30 LB roofing felt? I have also read to put down about an inch of mortar cover it with plastic and set the tub. This scares me because of the tub getting out of level or not seating properly on the concrete slab. Or to put small mounds of mortar cover with the felt. Others have said use Great Stuff Foam, but with the experiences I have had with this have not been pleasant I did not get the desired effect even though I was cautious not to spray much and it caused a lot of cleanup. I don't want the tub to squeak when you step in. I would appreciate any feedback. Thank You Mike