turning an unfinished basement into a fish room

[chemicall]

I would spray the ceiling in. Rent a airless sprayer for a day, pickup some pittsburgh seal-grip primer and pittsburgh 100% acrylic sun-proof paint.

This way you can just spray everything in, it's a REAL pain to have to use a brush and roller around all the joists etc.

If it was me this is what I would do and I would spray the walls also. But I don't have to rent the machine.

It is worth renting it though, as you could probably spent 10+ hours with a brush and roller. With the sprayer this becomes fast, easy, and easier on you at the end of the day.

If you drywall, I would say vapour barrior + tuck tape before the drywall. Then again a good primer like pittsburgh sealgrip and good outdoor paint like pittsburgh sunproof. Normally you wouldn't vapour barrior a basement ceiling, but when it comes to tanks and all this moisture, I think it is worth it.

The outdoor paint will resist the moisture 100x better than any indoor paint and last longer.

 

[cornbread_5]

nah i got to wait on my mother as it is her house

 

[CJH]

The outdoor paint will resist the moisture 100x better than any indoor paint and last longer.

I can't speak to the specific company and product you mentioned, but every company/product I have researched has said that their interior products are more moisture resistant.

It goes against convential wisdom for sure, but the explantion I have heard time and time again is that exterior products are designed to be flexible and UV resistant, both which make paints less moisture resistant.

Every company I have talked to has said that when moisture resistance is most important, be sure to use the hardest finish that your substrate can handle. Only use flexible exterior products if your substrate requires them. Or if you need the UV resistance.