Pipe Insulation Thickness Tables

Ashrae 189 1 2009 and iecc 2009 featured changes to their.
Pipe insulation thickness tables. Refer to fiberglas pipe insulation sizing manual for more information. The thickness of pipe insulation for most common residential cold water pipes is 1 2 thick. There is usually no additional benefit of adding more than 1 2 thick fiberglass or rubber pipe insulation to cold water piping. To meet the energy code requirement a minimum pipe insulation thickness of 4 5 in.
For product availability please contact your local owens corning area sales manager. The table below indicates recommended insulation thickness. In the new standard these tables are also reproduced in metric units. These tables were generated using the naima 3e plus computer program which follows the heat transfer calculation methodology in astm c680.
A low thermal conductivity allows specified thermal performance standards to be achieved with thinner insulation. 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. Ashrae 90 1 2010 includes a new more stringent table. Eca y50 enhanced table 2.
To avoid heat loss and reduced system efficiency pipe work in heating systems should always be insulated. 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. Indicative thickness mm of insulation for non domestic hot water 60 c and low temperature heating service areas 75 c to control heat loss. 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.
The values are in figures 1 and 2 complete with the footnotes. Hot cold water freeze protection. Insulation thickness table to control heat loss. Thickness 0 2 in 5 mm 0 4 in 10 mm material form 1 500 ft rolls.
Hot water 60 c low temperature. Our fiberglas pipe insulation portfolio is available in thicknesses up to 5 with inside diameters of up to 36. The minimum pipe insulation thicknesses are given in two tables 6 8 3a and 6 8 3b in the standard.