I guess the one thing that would concern me is that the 2 inches over the insulation is only supported (attached) on one side. Concrete strength is poor when subjected to bend pressures. It's strength is in compression.
I've though about drilling a hole and putting some rebar through the form to support the 2" when I pour the approach.I guess the one thing that would concern me is that the 2 inches over the insulation is only supported (attached) on one side. Concrete strength is poor when subjected to bend pressures. It's strength is in compression.
I have a question. Trying to educate myself a bit - I am hoping to build myself a garage in the next couple years or so.
What would be the issue, if you poured the approach & floor all in the same pour? Just run the concrete out the doorway - an extension of the floor?
Never thought of the approach heaving. Good call.your approach needs to be separate. Don't use rebar from garage slab to approach either. Bad deal. The approach is a floating slab and will move up and down between seasons.
Buzz saw, what is your garage door going to seal against if that skinny strip of concrete cracks out of there ( which is possible since it's bearing on compressible foam ) ? Also, since your future exterior slab could frost heave do you really want it doing so right at the face of your door?I'm pouring my building next week and have decided to put 2" foam directly under where the overhead door comes in contact with the floor. I'm going to leave about 1" concretrete on top and use the expansion joint (when I pour the approach)for the thermal break for the top 1" of concrete.
Buzz saw, what is your garage door going to seal against if that skinny strip of concrete cracks out of there ( which is possible since it's bearing on compressible foam ) ?
Also, since your future exterior slab could frost heave do you really want it doing so right at the face of your door.
Since we are thinking...... if it does heave, when you get a late winter driving rain against your OH door, and the water sheets down the door, where does the water go?I'm not sure if a heaving slab would affect the door.
With gutters how does this differ from the gable end?Not only do you need to worry about driving rain. You need to worry about splash that will occur every time it rains because your door is on the drip side of the building as opposed to being on the gable end.
I assumed I was seeing a metal roof. I don't know much about Ohio weather but in Vermont the snow sliding off the roof takes them down every winter.With gutters how does this differ from the gable end?
it's not about straight R value, it's about breaking the thermal contact. 1/4" of foam is way better insulator than 1/4" of concrete. it'll make a big difference. a piece of treated wood will do it as well.I just cut the foam off and overlapped the floor foam and the wire mesh to the edge of the form. I don't think that triangle piece of foam is giving you much rvalue anyway
Ya good point.. I dont think I lose a whole lot of heat through mine though, its 6" thick and the tubing is held back 18" from the opening.. I prolly lose a lot more heat through the 10-6 x 10 2" insulated overhead door.. but you guys get a lot colder winters than us .it's not about straight R value, it's about breaking the thermal contact. 1/4" of foam is way better insulator than 1/4" of concrete. it'll make a big difference. a piece of treated wood will do it as well.
7. They sell spacers to put under the remesh to keep it spaced properly in the floor. tie the tubing to the remesh and use the spacers and you don't have to worry about having it to deep or not deep enough and cutting into it when you cut the concrete.
Then they weren't installed right. the gutters have to be lower than the roof so the snow will slide over them. then you can put snow jacks on the roof also and that will keep most of the snow from sliding off and it will melt into the gutter.I assumed I was seeing a metal roof. I don't know much about Ohio weather but in Vermont the snow sliding off the roof takes them down every winter.
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