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Overview
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Steps:
1. Drill ⅝-inch-diameter holes through the floor joists for running the PEX tubing.
2. Lay the aluminum transfer plates between the floor joists, then fasten them to the underside of the subfloor with ½-inch screws.
3. Run a continuous length of PEX tubing back and forth along the transfer plates, passing it through the holes in joists.
4. Using your foot, gently step on the tubing to snap it into the grooves in the transfer plates.
5. Lay batts of mineral wool insulation between the floor joists, covering up the tubing. -
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Less than an hour for an average-size room
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About $5-$10 per square foot, plus mechanical component costs
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Tools
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Shopping List
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Difficulty: Easy to moderate
Somewhat easy, but the work must be performed at the factory
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Tools List
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Drill
for boring holes and driving screws -
Utility knife
used to cut batts of insulation
Shopping List
1. Heat transfer plateused to hold PEX tubing against underside of subfloor
2. PEX radiant-heat tubingdelivers hot water for heating the floor3. ½-inch screwsfor fastening transfer plates to underside of subfloor
4. Mineral wool battsused to insulate the tubing between the floor joists
2. PEX radiant-heat tubingdelivers hot water for heating the floor3. ½-inch screwsfor fastening transfer plates to underside of subfloor
4. Mineral wool battsused to insulate the tubing between the floor joists
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