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Radiant Floor Heating/Will staple-up radiant floor below sub-floors work


Im meeting with a homeowner tomorrow to layout discuss radiant in floor installation.All tho i have been to classes ,books on the subject i have yet installed one. I do have many yrs experiance with boilers,forced air system. Part of the old house has old sub floor and he added another sub floor on top.Is  staple up out of the question to do with 2 sub floors plus hard wood floors? Is  the best and only option panels?

First, a room-by-room Manual 'J' heat load analysis. Then you can consider your options. We help professionals and homeowners choose the most appropriate design for their particular application.

Here in Minneapolis we never staple-up PEX as it is very inefficient and often give radiant floor heating a bad name.

Staple-up PEX below sub-floors will often work in retrofit situations if calculate the load correctly, design the hydronic side right and consider the insulation below the panel. And of course use an quality extruded aluminum heat transfer panel. They are not all the same.

We install radiant ceiling, walls and use European style wall-hung panel radiators to rooms or supplement radiant floors that won't quite meet the load in the coldest weather.

If you need some help, send a plan calling out basic dimensions of room, windows, doors and insulation and leave the rest to us.

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Morgan M. Audetat


Radiant panel heating design, including floors and ceilings, European wall panels and snow melting for residential and light commercial buildings..............................................................-Master of Steam and Hot Water,City of Minneapolis....................................................--- Master Plumber, State of Minnesota...........


30 years..... Charter Board Member - Radiant Panel Association, former manufacturer of condensing boilers, former national distributor of radiant floor products, son and apprentice of mechanical & plumbing contractor. Current mechanical/plumbing contractor specializing in hydronic based, integrated HVAC systems. Radiant floor heating/cooling. Snow Melting. Condensing Boilers. Indirect water heaters. System design, consulting and technical training world-wide. Licensed contractor, designer, installer and consultant.

B.S. University WI 1981 CONTINUING EDUCATION: Viessmann Condensing boiler and Solar water heating certification 2010, N.D.S.U. Lead Worker RRP certification 2010, Knight condensing boiler certification 2009, Wrightsoft Manual J CAD certification 2009, RPA Designer & Installer Certification 2008, Nate Hydronic/Forced Air Certification 2008, Uponor/Wirsbo advanced design school certification 2007, Buderus Wall-hung certification 2007, Power Limited License (low voltage controls) 40 CE credits 2005, Basic Hydronic Certification IPEX & Northern Alberta Institute of Technology 1998, Charter Board Member - Radiant Panel Association 1994, Residential Off-Electric to Hydronic Conversion Heating School Canadian Hydronics Council 1994, B&G Little Red School House 1993, Rood Utilities (now Auburn Technical Institute) Oil Burner School 1993 ,Tekmar Controls residential and commercial 1993, Division Manager and Advanced Hydronic Seminar Instructor for the first Exclusively Hydronic Radiant Floor Distributor in the USA 1990, Hydronic Radiant Heating Association Workshop participant with Richard c. Bourne, PE spring 1988, Master Plumbing, Hydronic, Solar Course Red Rocks Community College 1987.

Awards and Honors
2009 System Showcase Award - Radiant Panel Association

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