We just completed stapling PEX to foam board in the basement (slab on grade). When we do the 1st and 2nd floors we will put the pex over OSB and pour thin slab gypcrete/concrete (gypcrete current plan). We have a designer and did Manual J. I am not looking to debate the design or any other part of the plan, just trying to find out the best way to do this. Question is: is there a stapler out there for stapling the PEX to the OSB? We used the Malco stapler and staples to staple pex to the foam board and that worked fine. Looking for a similar solution but for OSB. The Malco stapler claims to have a OSB staple option but I have never seen it and the staples are really, really expensive. Thanks! Scott

You might want to consider this one:

Peter Mangone RB-5

They also make a pneumatic RB-6 that is about 10 times the price of the RB-5. Full disclosure...SupplyHouse is one of our affiliates.

The Mangone pneumatic gun is a good tool.
We also sell it as well as rent the tool.
http://www.blueridgecompany.com/radiant/hydronic/249/peter-mangone-rb-clip-gun-system

Keep in mind when stapling to a osb board the staples tend to come out sometimes when pouring.
It is a good idea to also have a bag of Sioux Chief Tube Talons (nail down plastic clamps) handy for the occasional staples that let loose.
http://www.blueridgecompany.com/radiant/hydronic/153/sioux-chief-tube-talons-touchdowns
Dan

Thanks to both of you for the recommendation, that looks like the right tool for the project.

Is there any reason to use staple gun clips vs. nail down tube talons on wood sub-floors? PEX tube talons cost less per 100 ($7.95) than the staple clips for that staple gun ($9.95), assuming 1/2" PEX.

PEX tube talons:  http://www.supplyhouse.com/HydroPEX-HTALON05-Tube-Talon-for-1-2-PEX-Tubing-Bag-of-100-6853000-p

PEX staple gun clips:  http://www.supplyhouse.com/Peter-Ma...-5232000-p

The reviews for those Peter Mangone staple clips don't sound too encouraging:  "They don't hold very well. They pull out easily."  "My problem with them is that they don't hold the tubing up tightly enough. The staples can easily pull out of the wood."

Talons are great, but if you are running a large amount of pipe ( thousands of feet) pneumatic is the way to go and use talons to support when you have a staple pull out. Talons are a lot of crawl and nail. Slow process. Also note Mangone staples will hold better in a plywood sub floor than a OSB type sub floor.
This happens during the pour, or occasionally when kicked by a worker. Thus a bag of Talons on site during the pour is smart insurance.
Here is a link (not live ) to some U tubes on our site. I have done systems with and with out

http://www.blueridgecompany.com/articles/Staple_Down_Over_Subfloor

Dan

Your "designer" should provide this information. We do not use RB-1 but have in the past.