[ctote]

For our basement, should we consider spending a little extra for something like this?
We've only seen a few spots of moisture on the walls in one corner of the basement, and that has since been drylocked.

 

[Maintenance 6]

You are dealing with a space that's prone to high levels of moisture even if it appears dry. For the minimal amount of extra money it will cost, use the MR board. Use good building practices for below grade construction and the MR board will give you that much more peace of mind.

 

[ctote]

You are dealing with a space that's prone to high levels of moisture even if it appears dry. For the minimal amount of extra money it will cost, use the MR board. Use good building practices for below grade construction and the MR board will give you that much more peace of mind.

Thanks for the tips! I've also read something about surrounding our staircase with fire rated drywall - know what I should look for when I go shopping? And, is there anywhere else I'll need to use fire rated drywall?

 

[Maintenance 6]

US Gypsum makes a board called "Mold Tough VHI FIRECODE" that has both properties. You're not going to find it at the local home center, but a drywall supplier should have it or something similar. On a single family dwelling, I'm not sure there is a specific drywall requirement for stairways, not that it isn't a good idea. You'll want to finish it with mold resistant drywall compound, since the regular stuff has organics in it (mold food).