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Solar Purlins

Turn any roofing project into a solar hot water heater.

Call 814-326-4121 to order

Heat Transfer Plates

Available in 2' and 4' lengths

Call 814-326-4121 to order

Used with insulation and tiled roofing. PEX tubing snaps in to collect solar heat collected by steel tile

Solar Purlin with PEX tubing snapped in place.

Heat Transfer Plate with PEX tubing

Solar Purlin with R-Panel Steel

Turn Every Roof Job Into a Solar Hot Water Heater

The Liberty Solar Purlin is used to collect the sun?s energy in the form of hot water suitable for domestic hot water, space heating, or to power a solar chiller for air conditioning. The purlin is the same size as a 2x4 wood purlin and can be structurally integrated into the structure of a re- roof or new roof installation. Because a re-roof or new roof installation often uses 2x4 wood purlins you can replace the wood purlins with the new solar purlins (1.5” x 3.5”) and use them to heat your hot water.
The System:
We recommend placing foil faced insulation down before screwing the solar purlin to rafters or to an existing roof or deck. This reflects the heat into the 1.5” air space to be captured in PEX tubing that snaps into the solar purlin. The flexible pex tubing snaps into the rounded slot in the top of the solar purlin for optimum heat transfer from the metal solar purlin to the water. The roofing is then screwed onto the purlin in the wide area designed for attaching the roofing or decking. When the roof is warmed by the sun, the solar purlin transfers the heat to the pex tubing carrying water or glycol (in areas where freezing temperatures occur). The one square foot can collect from 150 - 300 btu per day.

The Advantage:
• After installation, heats hot water with free energy from the sun.
• Low cost of installation
• It can be used with a large variety of roofing systems: steel, slate, asphalt, rubber, and other roofing materials.
• Protection from wind, hail, and vandalism • Long life using proven industry standard products
• Turns every roofing job into a solar hot water heater. • Reduces reliance upon foreign oil • Designed & Made in the USA (Knoxville, PA)

Cost Analysis For a complete a system:
1) Solar Purlins - $1.60 per linear foot 2) Steel Roofing - Starts around $0.70 per square foot 3) 1/4” foil faced foam insulation - $0.30 per square foot 4) 1/2” Pex Tubing - around $120/300 ft roll does 5) Heat Exchanger Water Tank- dual copper coils for heat
exchanger including backup electric heater, controller, P/ T valve, draining valve, check valve, magnesium bar)
1) 52 gal (200 L) - $995 2) 79 gal (300L) - $1175 3) 132 gal (500L) - $2150
6) Working Station - $685 (includes pump and flow meter)
7) Expansion tank: 1) 5L - $105.00 2) 8L - $115.00
3) 12L - $150.00
For a 10x30 area of a roof as a solar purlin collector: 1. Solar purlins - 270? - $432 2. Steel roofing - $230 3. Insulation - $90
4. Pex Tubing - $120 5. 2x4 wood for perimeter - $30
Total for collector: $902
Solar Purlin Collector
If you are planning on a roof or re-roof anyway, you can deduct the cost of steel roofing, insulation, and wood purlins would cost ($445), so your actual cost of the solar collector is $902 - 445 = $457 extra cost to your roofing project.
For a complete system, we have heat exchanger tanks, working stations, and expansion tanks.

Each plate is 2' long x 4.5" wide. We also have 4' long heat transfer plates.Each plate is 2' long x 4.5" wide. We also have 4' long heat transfer plates.Each plate is 2' long x 4.5" wide. We also have 4' long heat transfer plates. Each is made with .016 in thick aluminum 3105-H14Each is made with .016 in thick aluminum 3105-H14Each is made with .016 in thick aluminum 3105-H14

Can be stapled up by hand or powered staplers.Can be stapled up by hand or powered staplers.Can be stapled up by hand or powered staplers.

Heat transfer plates can be used for subfloor heating (between joists). Tubing easily snaps into the plate and is then secured with metal staples by hand or powered staple guns to subfloor (see picture). Our aluminum has a high heat transfer ratio warming the entire floor area.Heat transfer plates can be used for subfloor heating (between joists). Tubing easily snaps into the plate and is then secured with metal staples by hand or powered staple guns to subfloor (see picture). Screws also can be used.

Heat Transfer Plates Stapled Between Floor Joints

Hot water is circulated through the pex tubing in the underfloor heating systems joist spaces of your home, where heat is then conducted to the attached aluminum heat transfer plates warming the wood subfloor and the entire room above is comfortably and evenly heated. Most applications recommend heat transfer plates 8" on center or with joists 16" on center, you would have one loop up and back in a joist cavity. To figure out how many heat transfer plates you need in this application multiply your total square feet by .65. For example a 300 square foot room would need 300 x .65 = 195 heat transfer plates. To figure out how many heat transfer plates you need in this application multiply your total square feet by .65. For example a 300 square foot room would need 300 x .65 = 195 heat transfer plates.

Stack of 100 Heat Transfer Plates We supply the best price on Aluminum Heat Transfer Plates for 1/2" PEX Tubing. We supply the best price on Aluminum Heat Transfer Plates for 1/2" PEX Tubing. We supply the best price on Aluminum Heat Transfer Plates for 1/2" PEX Tubing.