What is an easy 2-fix kit? It’s a gasket made out of membrane because some of the concrete drains don’t have membranes. On a new build you probably won’t need the slurry, but on a rebuild, you probably will fill in any missing floor voids. By admin|2018-10-04T09:48:19+00:00March 12th, 2018|Products| Share This Story, Choose Your Platform! facebooktwitterlinkedinreddittumblrpinterestvkEmail Leave A CommentYou must be logged in to post a comment. This site uses Akismet to reduce spam. Learn how your comment data is processed.