New to this forum and glad I found it. Purchased home in 1994 and replaced the Briggs Toilet with a Kohler 1.6 in 1997 because of water leaks around the toilet onto the linoleum floor. I replaced it myself but this year saw more leaks noticeable under the linoleum. I removed the toilet and found that the 1/2 particle board that was installed above the subfloor was wet approximately 3' in diameter in front of the toilet and sides, about 8-10" behind the toilet I noticed the flange was screwed to the sub floor below the particle board with deck screws, 6 each and set flushed with the subfloor. The bathroom floor is 5' x 6' and after calling a couple of contractors both recommended they would cut the wet section out and replace it. For three days I researched many sites finding this one after receiving one bid asking for$2008 to replace the damage wood and also tile my floor and cabinet. After that bid, I decided I could do this myself. I removed the vanity cabinet, entire particle board and staples leaving just the tub. I went under my house and expected under the sub floor but found no dry rot. Presently, I'm running a heater in the bathroom to dry the subfloor. My flange is metal and appears cemented with epoxy approximately 1-to 1-1/2" to the Black ABS waste pipe. I purchased 1/2' cement Hardi backer boards to replace the 1/2" particle board since the wife and I decided to tile the floor ourselves. I read this forum about flange heights and purchased a Oatey Closet Flange Spacer Kit from Lowes which comes with 2 gaskets, one 1/2' Spacer, the bolts and 2 plastic Shims. I bought this kit to install over my metal flange to compensate for the needed height to hopefully get the flange flushed with the backer board once installed. I expect maybe 1/8' height difference above the finished floor after installation. I looked at other plastic spacers at Home Depot but had bought this kit earlier. Question: Can I safely install this white plastic spacer kit to the metal flange? Should I not worry about the plastic shims and just use Silcone sealant? Is the kit an overkill? I will purchase stainless steel wood screws to secure the original flange back to the subfloor and most likely a newer toilet. Any help and advice is most welcome. The costly repairs and bids by contractors are ridiculous and I'm now going to DIY!!
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