gas and water pipe

[hithere]

do we have to put some insulation tube something like that over the water and gas pipe to prevent not flozen for winter time?

Thanks

[mjwalsh]

Natural gas should not have any danger of freezing that I know of. The water pipes that are close to an unheated wall or close to an outside vent that might open allowing a draft----watch out! Insulation pipe wrap will help depending on how far below freezing & the duration of the breeze. If it is a hot pipe insulation will save energy. If it is a cold pipe then it will also help prevent sweating during a humid summer.