Tongue and Groove between pours > GreenBuildingTalk - Green Building Forums on Insulating Concrete Forms (ICF), Structural Insulated Panels (SIP), Radiant Heating, Geothermal Heat Pumps, Solar Power

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Barret Roosa User is Offline

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Posts:12

12/10/2001 2:36 PM
Just a brainstorm thought I had around multiple pour situations. Looking for: 1. structure 2. increased water protection Any thoughts?

James Eggert User is Offline

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Posts:1001

12/10/2001 5:42 PM
Barret I'm not sure where you are going with the T&G aspect of your question? But my thoughts are this........ T&G between pours? Why bother when you are mating a rough pour(hard) with a rough pour(fluid). What would the T&G provide that the rough surfaces and rebar connections do not?? Increased water protection? From what? Most joints would be above the grade plane so assuming reasonable protection from an exterior covering, such as siding or stucco type materials I see no benefit to a T&G set-up. Other than increased labor costs!! Am I missing something in your question?? JIm Take Care Jim

Take Care Jim Design/Build/Consulting "Not So Big" Design Proponent

Ian ICF Builders User is Offline

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Posts:612

12/10/2001 7:25 PM
To add to Jim's remarks.... The concrete will not do anything positive or negative to aid in waterproofing. You could use admixtures such as xypex in the readymix but you would still need to waterproof the exterior of the ICF (speaking below grade here). Simply put, the polystyrene and or the concrete do not constitute waterproofing in any way, so regardless of the shape of the cold joint, it will still leak if the conditions exist.

Barret Roosa User is Offline

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Posts:12

12/11/2001 8:35 AM
Judging from the responses I hear no great benefit here. I do some woodworking as well and know that adding to the surface area of any joint stregnthens it. Thanks for your input though!

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