basement subfloor question

[Luremaker]

I really like the raised, plastic subfloor idea. Seems like exactly what I need.

There are two available in my area: Platon and Delta FL. There is a $.3/sf difference between the two. Beyond that, the only other difference that I can find is the Delta recommends 5/8" OSB and Platon recommends 7/16".

Does anyone have any additional thoughts or preference between these two?

I am thinking of using platon. The way I understand from reading their instructions on their web site plywood/OSB is only required in commercial applications or high point loads such as slate billiard tables and when installing hardwood flooring or vinyl tiles and such. I want to install laminate flooring which can be placed directly over the platon.

 

[bdeboer]

I am thinking of using platon. The way I understand from reading their instructions on their web site plywood/OSB is only required in commercial applications or high point loads such as slate billiard tables and when installing hardwood flooring or vinyl tiles and such. I want to install laminate flooring which can be placed directly over the platon.

You can also do this with the Delta-FL per their installation instructions. I have not tried it. They do recommend following the manufacturers specifications on the foam friction barrier.

 

[bhostasa]

I bought the Delta FL last night. Pretty rigid stuff.

I will be installing pre-engineered wood flooring (floating) and carpet tiles. The installation guide states to use 5/8" OSB for carpet but, from what I gather, that's more for nailing the tack strips than anything.

The installation instructions for the pre-engineered wood is to install directly on top of the Delta but I am planning on putting OSB there also.

Because of my height restrictions, I am planning on using 7/16" OSB with H-clips and tapcons. I'm also planning on putting the weed barrier fabric under the Delta to reduce sound.

Thanks for the help guys!

 

[studor]

Bhostasa --what does the Delta stuff work out to per square foot with the OSB? Just curious given the cost of the Dricore panels.

 

[bhostasa]

Bhostasa --what does the Delta stuff work out to per square foot with the OSB? Just curious given the cost of the Dricore panels.

The Delta is around .35/sf. OSB about .25/sf.

Total - .60/sf.

 

[JB4310]

Because of my height restrictions, I am planning on using 7/16" OSB with H-clips and tapcons. I'm also planning on putting the weed barrier fabric under the Delta to reduce sound.

Thanks for the help guys!

I think it's a good idea to go with OSB all around, but not sure about putting anything between the geotextile and the floor, that would interfere with any water movement, slowing it down and spreading it out and take longer to dry.

I understand the sound worry, but with fasteners holding sub-floor, and having carpet and finished flooring on top, I doubt there would be any problem with hearing it.

You could try a test area, As I said before, in general less layers is better than more when it come to water control IMO.

JB.

 

[Luremaker]

The Delta is around .35/sf. OSB about .25/sf.

Total - .60/sf.

and that compares to around $1.75 per sq ft for the dricore. I noticed last night dricore has a new product. Instead of the dimpled plastic under the OSB they have Blue insulated Foam board under the 2' x 2' panels.

 

[bhostasa]

I think it's a good idea to go with OSB all around, but not sure about putting anything between the geotextile and the floor, that would interfere with any water movement, slowing it down and spreading it out and take longer to dry.

I understand the sound worry, but with fasteners holding sub-floor, and having carpet and finished flooring on top, I doubt there would be any problem with hearing it.

You could try a test area, As I said before, in general less layers is better than more when it come to water control IMO.

JB.

Yeah. I'm still 50/50 on using the fabric for the reasons you mentioned. Also, in the installations that you've done, was there any rhyme or reason to when and where you tapconned the OSB? I was thinking that you'd probably want to avoid screwing through the dimples on the Delta but I'm not sure how possible/practical that is.

Any advice on that?

 

[JB4310]

Yeah. I'm still 50/50 on using the fabric for the reasons you mentioned. Also, in the installations that you've done, was there any rhyme or reason to when and where you tapconned the OSB? I was thinking that you'd probably want to avoid screwing through the dimples on the Delta but I'm not sure how possible/practical that is.

Any advice on that?

I've never used that geotextile for that application, we use it for drainage work but not like that under a sub-floor. I don't do finish work only do the rough waterproofing work.

I wouldn't worry about avoiding the dimples with the screws, you would have to hit one direct center to let any water in, first off not many will be a direct hit and even if it does occur it would only let a few drops of water into the bottom of the dimple, it would not rise up to the finish materials.

You'll have to check with install directions on a screw pattern for the wood sheathing, don't skimp on the clips.

Good luck, JB.