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The age of various house members/units is crucial in the understanding of their remaining useful life. Listed below are some typical age/life expectancies. These are general statements, for there are many factors which determine the life of a house member/unit that are impossible to detect on a visual inspection. Some members/units may perform well beyond their expected life, while others may need replacement sooner.
| House Members/Units |
Est. Useful Life |
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asphalt composite roof |
15 - 30 |
| slate/tile roof |
50+ |
| septic system (leaching fields) |
18 - 20 |
| boiler/furnace |
20 - 30 |
| heat exchanger w/humidifier |
10 |
| combustion chambers |
10 |
| burner |
10 |
| appliances |
5 - 8 |
| hot water tank |
5 - 12 |
| tankless hot water (serviced properly) |
10+ |
| buried water pipes in concrete |
15 - 18 |
| window maintenance/repairs |
maintain annually |
| flashing maintenance/repairs |
maintain annually |
| metal chimneys |
10 |
| metal flue lines |
10 |
| unlined brick flues |
20+ |
| automatic flue dampers |
inspect annually |
| swimming pool liners |
10 |
| tile walls (average quality) |
1 - 5 |
| exposed wood deck or porch |
5 - 7 |
| old wiring |
unknown |
| thermal seals in windows |
5+ |
| caulking/putty (average quality) |
1 - 5 |
| painted siding/trim |
5 |
| stained siding/trim |
7+ |
| downspout drywalls |
10 |
| termite treatment |
5 - 7 |
| carpenter ant treatment |
annually |
| air conditioning compressor |
8 - 12 |
| old water pipes |
unknown |
| old drains, traps, vents, waste pipes |
unknown |
| buried oil tanks |
15 |
| oil tanks |
30 |
| plumbing fixtures/faucets |
unknown |
| fiberboard siding |
5 - 7 years (properly treated) |
| rolling roofing seams |
maintain annually |
| chimney maintenance |
inspect annually |
| pump motors |
5+ |
| roof drainage maintenance |
service semiannually |
| heat pump |
8 - 10 | |
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Tips From R.J.D.
R.J.D Home & Property Inspections strictly adheres to the State of Connecticut Department of Consumer Protection Home Inspector Regulations and the Code of Ethics. Our dedication to honesty and integrity assures you a concise, comprehensive and accurate Home Analysis Report of conditions as we observe them at the time of our visual inspection.
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