What product(s) does everyone use when sealing bottom plates for interior and exterior walls in their crawlspace? I'm trying to find a product that I can put around my low voltage and high voltage cables to seal the holes where they go from my crawlspace bottom plate up the wall.

The one product I found which looks to be fire rated is Duct seal (http://www.homedepot.com/h_d1/N-5yc1vZ1xhc/R-100212441/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053). It looks a lot easier to deal with then the spray foam that gets messy and is hard to use later.

Interested to hear what everyone else is using.

Well if you want to go by building code you have to use fire barrier caulk (the red stuff). It's kind of expensive as far as caulking goes, but that's what building inspectors look for anytime you go through the top or bottom plate of a wall. If it's a large enough hole you can use flame resistant insulation (I think it's yellow generally).

Thanks.. I think I'm going to try out this 3M Fire Barrier IC 15WB Sealant (http://cableorganizer.com/3m-fire-protection/fire-barrier-ic15wb.htm#features)

that is exactly what you want.. The fire barrier caulk is normally either a red/orange color or a pink color so inspector can tell you used the right stuff.

If you have a lot of large holes you can also use Roxul fire and sound insulation to help

Just a quick question with regards to this topic...

Why is the DAP Fire Stop caulk which is available at Home Depot here in Canada a standard gray colour and not orange or pink?

Just curious.

Dan

The conclusion seems to be that a fire rated product is required. Is it?

One more question, how easy is it to remove either the 3M or DAP product later on should I decide to run more wires up the bottom plate hole?

All we had to use here is standard fiberglass insulation, stuffed into the hole. Been that way on both houses I have owned now.