Pipe Insulation Thickness Tables

Eca y50 enhanced table 2.

Pipe insulation thickness tables.

Tables 6 8 2a and 6 8 2b see figure 3 can be used to determine the insulation thickness for both supply and return air ductwork. Insulation thickness table to control heat loss. To meet the energy code requirement a minimum pipe insulation thickness of 4 5 in. Hot water 60 c low temperature.

There is usually no additional benefit of adding more than 1 2 thick fiberglass or rubber pipe insulation to cold water piping. In the new standard these tables are also reproduced in metric units. The minimum pipe insulation thicknesses are given in two tables 6 8 3a and 6 8 3b in the standard. Our fiberglas pipe insulation portfolio is available in thicknesses up to 5 with inside diameters of up to 36.

The thickness of pipe insulation for most common residential cold water pipes is 1 2 thick. With a 25 year aged thermal conductivity as low as 0 025 w m k at 10 c mean kooltherm pipe insulation is one of the most thermally efficient insulation material commonly used. Ashrae 90 1 2010 includes a new more stringent table. To avoid heat loss and reduced system efficiency pipe work in heating systems should always be insulated.

Very hot systems like hot water and steam systems should also be insulated to avoid potential personal injuries. Indicative thickness mm of insulation for non domestic hot water 60 c and low temperature heating service areas 75 c to control heat loss. Refer to fiberglas pipe insulation sizing manual for more information. The values are in figures 1 and 2 complete with the footnotes.

The table below indicates recommended insulation thickness. Iron pipe double layer nesting chart iron pipe size iron pipe outside diameter insulation wall thickness 1 1 2 2 3 3 4 4 5 6 0 840. These tables were generated using the naima 3e plus computer program which follows the heat transfer calculation methodology in astm c680. Based on nes y50 enhanced and enhanced capital allowance thickness tables.

Thickness 0 2 in 5 mm 0 4 in 10 mm material form 1 500 ft rolls. The following tables compare the minimum insulation thickness required to maintain the outside surface temperature at or below 140ºf. For product availability please contact your local owens corning area sales manager.