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buffalobillpatrick · 12-19-17, 05:04 PM

I got the concrete slab poured for the downstairs floor.

1440 ft2 full floating with 6” of type 2 EPS under it and 7” around entire perimeter.

Old sub-contractor used young labor & did a nice smooth job, he said that the rich mud was easier to finish. I got it done about a month before Winter set in.

About 5" thick on average, high strength 5,000 PSI & double fiberglass
(which are now smaller strands than they used when i last did this)

Ran a 1/2" rebar (#4) all around perimiter about 5" in from edge.
The heavy gauge 6" x 6" remesh in the slab was handy for attaching the pex with zip ties.

I tried to run the 1/2" pex at 6" on center but with all the sweeping turns it averaged 7”

I reduced the doorway heat loss issue, to some extent, with EPS foam between slab & outside concrete wall and a 2" x 12" PT board on top to bridge the gap.

The 2x12 at the outside edge sits on 1.5" angle Iron that is attached to the inside of the 8" concrete wall with 3/8" RedHead anchor bolts, the inside edge of the 2x12 sits on top of part of the concrete slab that was allowed to run under it for a few inches, very secure.

I will need to dress it up on top with something that won't conduct too much heat out.

12-19-17, 05:04 PM	#38
buffalobillpatrick Master EcoRenovator Join Date: Mar 2014 Location: Florissant, Colorado Posts: 599 Thanks: 814 Thanked 59 Times in 55 Posts	I got the concrete slab poured for the downstairs floor. 1440 ft2 full floating with 6” of type 2 EPS under it and 7” around entire perimeter. Old sub-contractor used young labor & did a nice smooth job, he said that the rich mud was easier to finish. I got it done about a month before Winter set in. About 5" thick on average, high strength 5,000 PSI & double fiberglass (which are now smaller strands than they used when i last did this) Ran a 1/2" rebar (#4) all around perimiter about 5" in from edge. The heavy gauge 6" x 6" remesh in the slab was handy for attaching the pex with zip ties. I tried to run the 1/2" pex at 6" on center but with all the sweeping turns it averaged 7” I reduced the doorway heat loss issue, to some extent, with EPS foam between slab & outside concrete wall and a 2" x 12" PT board on top to bridge the gap. The 2x12 at the outside edge sits on 1.5" angle Iron that is attached to the inside of the 8" concrete wall with 3/8" RedHead anchor bolts, the inside edge of the 2x12 sits on top of part of the concrete slab that was allowed to run under it for a few inches, very secure. I will need to dress it up on top with something that won't conduct too much heat out. Last edited by buffalobillpatrick; 01-09-18 at 11:30 AM..