How To Look At A House
McGarry and Madsen's home inspection blog for buyers of
site-built, mobile/manufactured and modular homes
When did they stop using cast iron pipe in houses?
Saturday, February 29, 2020
Cast iron was used extensively for DWV (drain-waste-vent) piping until the mid-1970s, when PVC pipe became widely available and accepted by plumbers. Corrosion was the main problem. It is still an available and approved pipe in the building codes, and used for repair of cast iron pipe systems systems, although PVC is used more often for repairs of sections of cast iron that have gone bad. It is recognizable by the extra-wide hub at pipe connections.
Here’s a decade-by-decade listing of the common types of pipes used:
• What type of water supply and drain (DWV) pipes were commonly used in older houses?
• What type water supply and drain (DWV) pipes were commonly used for 1950s residential plumbing?
• What type water supply and drain (DWV) pipes were commonly used for 1960s residential plumbing?
• What type water supply and drain (DWV) pipes were commonly used for 1970s residential plumbing?
• What type water supply and drain (DWV) pipes were commonly used for 1980s residential plumbing?
• What type water supply and drain (DWV) pipes were commonly used for 1990s residential plumbing?
• What type of water supply and drain (DWV) pipes were commonly used in the 2000s?
• What type of water supply and drain (DWV) pipes are commonly used today?
Visit our PLUMBING PIPES page for other related blog posts on this subject, or go to the INDEX for a complete listing of all our articles.
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