in floor heat effect on floor framing
in floor heat effect on floor framing
(OP)
I design in an area where most homes have in floor heat. Many of these systems utilize a staple up tubing method where the heat tubing is stapled directly to the underside of the floor OSB then the joist bays are insulated with foil backed insulation to keep the heat reflecting upwards. The water temperature on a cold day can reach 165degrees. The heating contractor insists that the engineered joists and OSB is weakened due to these temperatures. The top surface of the OSB reaches 90degrees, so I'm guessing that most of the members in the area only get to 120degrees on the underside. I suppose the OSB in contact with the tubing gets pretty hot. What are your thoughts on if this is a legimate structural concern, especially with engineered materials which have a lot of glue in them? Is the diaphragm strength weakened?
Thanks,
Thanks,






RE: in floor heat effect on floor framing
http://www.radiantec.com/faq/faq03.php#3a
My first reaction to your post was similar. I don't think the temperatures are getting that high, and if they are they probably don't need to be. The whole idea behind radiant heat is to build a heat sink that maintains fairly constant temperature, not pushing deep cycles of heating and cooling.
RE: in floor heat effect on floor framing
Mike McCann
McCann Engineering
RE: in floor heat effect on floor framing
RE: in floor heat effect on floor framing