What is PEX-Flex?

Dual PEX-Flex is a pre-insulated flexible pipe ideally suited for hydronic heating with outdoor wood furnaces. Supplied in coils, this 2-in-1 (supply and return bundled together) pipe system is economical, simple to install and highly effective even in harsh soil conditions





Advantages of Logstor factory Insulated dual PEX-Flex

The low thermal conductivity of polyurethane foam delivers very high insulating performance, saving you fuel and furnace loading time - this also allows for a smaller overall jacket size relative to other insulating materials
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The entire system is made of plastic; there is nothing to corrode over time.PEX-Flex is "self-compensating" with respect to expansion and contraction... just uncoil and snake into trench, then backfill.

Installs quickly and easily without solvent welding, special tools or heavy equipment - often resulting in a more economical installed cost when compared to other insulating methods.

No drainage tile, gravel backfill or deep/wide trench required. PEX-Flex can be shallow buried even in high water table areas. Flexibility of coiled PEX-Flex often eliminates need for joints, elbows and fittings - plus custom 'cut-to-length' sections reduce waste. Lasts indefinitely, paying for itself many times over.


The PEX core pipes have a diffusion barrier made of EVAL, preventing oxygen from entering the system. "Smart" membrane under outer jacket to enhance and maintain insulation value.

Ours is a bonded system, meaning the carrier pipes, insulation and jacket are mechanically linked to one another and move collectively during expansion / contraction.



Why use PEX-Flex?

You have probably spent considerable time researching and comparing the heating unit that is right for your application. A professionally manufactured insulated pipe will maximize efficiency of your outdoor furnace system by keeping heat losses to a minimum. By effectively heating your house (not the ground), you will require less fuel, burn less wood and produce less emissions.

* Individual payback times will vary relative to the severity and length of the heating season

Whatever your budget, you simply can’t afford NOT to install PEX-Flex! This premium product will pay for itself over a short period of time*. PEX-Flex incorporates an eco-friendly polyurethane foam - the best insulation available on the market today. And to keep this closed cell foam dry (critical in any insulation system), it has a thick extruded lowdensity polyethylene jacket ensuring lasting efficiency.