More Blog Posts About Plumbing:

  1. Should I upgrade to a tankless water heater?

  2. How old is that water heater?

  3. What’s the powdery crust on the pipe connections at the water heater?

  4. Do you check the plumbing under the floor slab?

  5. What is that big thing in the toilet tank?

  6. Do I have to get a larger septic tank when I build a home addition?

  7. What is the difference between water service pipe and water supply pipe?

  8. This home has galvanized water pipe. Is that a problem?

  9. What’s the flip-up handle on the water heater for?

  10. What causes low water pressure in a house?

  11. How come the water has a rotten-egg smell in some empty houses?

  12. My well water test came back positive for bacteria. What should I do?

  13. Do you test the well water?

  14. How can I tell what type of plumbing pipe I have?

  15. What is the difference between a regular water heater and a power vent water heater?

  16. How do you test a shower pan for leaks?

  17. What is a grinder pump?

  18. What is that little tank on top of the water heater for?

  19. What is a dielectric union?

  20. What is a heat pump water heater?

  21. Why can’t PVC pipe be used for water pipe inside a house?

  22. What is an auto vent, air admittance valve, or check vent?

  23. Why is a European-style bottle trap not approved by the plumbing codes in the U.S.?

  24. What is the average life expectancy of CPVC pipe?

  25. What is an FVIR water heater?

  26. What is an escutcheon plate?

  27. Why is sunlight exposure bad for PVC pipe?

  28. What is the loose wire sticking out of the ground under the gas meter for?

  29. How can I locate my septic tank?

  30. Why is a backflow preventer required on lawn sprinkler systems?

  31. What do the ABS, PVC, CPVC, PB, and PEX plumbing pipe names mean?

  32. What are the right words for talking about a house plumbing system?

  33. How do you find a broken water pipe leak under the floor slab?

  34. What is a sediment trap or dirt leg?

  35. Is a hot water faucet required at a washing machine?

  36. My spa tub stopped working. What’s wrong?

  37. What is the purpose of a thermostatic mixing valve above a water heater?

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We want you to be an informed homebuyer, and each blog post is a question that we have answered for our friends and customers over the years. Hope they help you make a good choice for your next home.

    Another example is the photo below. Two traps are not better than one and create an easily clogged drain. This problem is compounded by the accordion type pipe that is used for the drain section that is directly under the sink drain, called a tailpiece. Although sold in hardware stores, it is not approved by any plumbing codes because the internal recesses collect debris that is not washed away by draining water as it would in a pipe with a smooth interior surface.

   Next is an example of someone else who did quite understand P-traps. The arm from the right side sink drains directly into the side of the trap, resulting in standing water in the arm. Also, the trap seal exceeds the maximum 4-inch height.

   And, finally, the pipe from the trap to the wall below is called the trap arm. This configuration has a trap arm running uphill, which makes most its length become part of the trap and filled with standing water. Again, a recipe for a sluggish drain.

   Although TV home-improvement shows sometimes make installing your own plumbing look easy, doing it right requires both training and years of experience. Repairs should always be performed by a licensed plumber. The plumbing inside your home is so critical that every building department in the United States requires plumbers to be licensed.

While we hope you find this series of articles about home inspection helpful, they should not be considered an alternative to an actual home inspection by a local inspector. Also, construction standards vary in different parts of the country and it is possible that important issues related to your area may not be covered here.
© - McGarry and Madsen Inspection.


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