Embedded Files
Desired Outcome:
Desired Outcome:
Properly installed pipe insulation that safely reduces thermal loss and prevent freezing of water distribution piping.
Properly installed pipe insulation that safely reduces thermal loss and prevent freezing of water distribution piping.
SWS Detail: 7.0301.1 Pipe Insulation
Author: Burl Kinoshita
Before
Before
Uninsulated water heater lines
After
After
Properly sized and installed pipe insulation
Steps
Steps
- Insulation selection
Interior diameter of insulation sleeve must match exterior diameter of pipe.
Pipe insulation must have a minimum R-value of R-3.
Must have vapor retarder.
If installed outside needs to be UV-protected.
2. Clearance from combustibles
2. Clearance from combustibles
Pipe insulation must have a clearance of 6 inches away from single-wall vent pipe .
1 inch away from B vent pipe to prevent a fire hazard
3. Installation
3. Installation
Install continuous insulation on the first 6 feet of both hot and cold water lines from the water heater, including elbows, unions and other fittings.
4. Insulate fittings
4. Insulate fittings
Install pre-fabbed insulation fittings at elbows and tee's or fabricate on site.
Fittings insulation must be tight and continuous.
5.Secure pipe insulation
5.Secure pipe insulation
Install pipe wrap clips or zip-ties as needed to secure all fittings and seams.
Lateral seams should be secured at a minimum of every 12 inches. (manufactured adhesive seam seal is NOT sufficient)
6. Outside Conditioned Space
6. Outside Conditioned Space
Follow steps 1,2,4,& 5 to Install continuous insulation on water lines outside the conditioned space to prevent freezing.
Page updated
Report abuse