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Radiant Floor Heating/1952 concrete floor over pour radiate


I just purchased a home built in 1952 and has radiant heated concrete floors.  We thought we could just polish the old floor for the highly polished concrete floor look.  Our contractor told us the existing concrete is too pitted to grind down and polish. He also said that pouring a new thinner level of concrete on top of the existing floor so it an be stained and polished is not an option as well.  My question.  Is it possible to  pour a new layer of some type of concrete product to stain and polish on top of our existing concrete radiant floor?
Thank you.

We work on many 1952 era radiant floors usually in disrepair from neglect. Before I looked at refinishing the floor I would look to extended the serviceable life of the system by first flushing, cleaning and treating the boiler water and then installing outdoor reset (ODR) or better yet a properly sized condensing boiler with ODR built-in.

Naturally I can not assess the condition of your concrete from here, but we insulate and over-pour many concrete floors and must choose to bond or not to bond to the old surface with a concrete or gypcrete. The application is typically 1.5" thick and will accommodate 3/8" PEX tubing.

This is sometimes hard to do considering existing doors, toilets, etc.

Gypcrete can be poured in fractional inches to level such a floor and other floor applications such as tile and engineered wood may be used.

We design radiant over-pours using Uponor Fast-Trak among others.  

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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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