I just watched an episode of Rehab Addict where Nicole converted a regular interior door to a pocket door in a small 1949 house. She used something to fill the hole where the doorknob would have gone. It was a powder and she mixed it with water. It looked like it was the consistency of a thick paste. It supposedly dried within 30 minutes and it could be sanded and pinted. I'd love to find out what it was and who makes it. Any help would be appreciated. BTW, I also posted something about this under bathrooms.
Sounds like "Durham's Rock Hard Water Putty".
Local hardware or home store should have it available.
Easy enough and a sensible thing to do when space is limited. You can buy and install a pocket door for as little as $100, and the kits are readily available at home centers and lumberyards.
While the pocket door kit is fairly inexpensive, the install is quite complicated and invasive. Installing a pocket door as new construction is easy but most don't realize that the rough opening needed for a pocket door is twice the width of the door itself. This means tearing out a door-sized section of wall, moving any electrical or plumbing that may be inside and possibly having to make a new header if the wall is load-bearing.
I would go so far to say that installing a pocket door as a remodel would only be advised for an experienced DIYer.
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