Insulating thick cold water pipes

We have 1 3/4″ cold water supply pipes coming into our building.  I would like to use foam insulation to cut down the condensation and just because it is cheap to insulate.  Foam only seems to come up to 1 1/2″.  Anyone know if I should just use 1″ and 3/4″ and tape them together or if someone makes wider insulation?  Maybe a wrap around solution?

funstraw

in Plumbers and Plumbing 12 years and 4 months ago

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funstraw | 12 years and 4 months ago

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So they measure the inside of the pipe for exterior insulation, interesting.  Thanks, I’ll look into that.

steam_man | 12 years and 4 months ago

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You are most likely measuring the outside diameter of the pipe. In which case your pipes are either 1-1/2″ or 1-1/4″. Order your insulation based on one of those two sizes (whichever is yours). OD for 1-1/2″ pipe is around 1.9 inches (1-7/8).

funstraw | 12 years and 4 months ago

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That’s great thanks.  If anyone had anything local I would check that out as well.

stevecym | 12 years and 4 months ago

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check McMaster Carr Supply on line.   Steve