I am starting construction on a new home and I am interested in radiant floor heating.  I would like to know how the size and layout of your system is determined i.e. heat loss, etc.  Our home is in South Texas where we may require heating less than one week in an entire year.  I see in most of your information that the radiant mats are distributed over the entire floor rather than around the perimeter where the heat loss is the greatest.  We lived in Montana for twenty years and had hydronic baseboard heat so I must confess I am most familiar with that, but truly miss the comfort of radiant heat rather than forced air furnaces.  Thank you in advance,

Sandra Grawunder