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AND considering that replacing only the panels has to be far cheaper than the initial installation, if they do drop too much in 25 years. So long as your roof i

by pkulak 4y ago

AND considering that replacing only the panels has to be far cheaper than the initial installation, if they do drop too much in 25 years. So long as your roof is still okay, I suppose.

matwood 4y ago
Just bake new panels into the cost of a new roof. It's probably time for both after 25 years.
- lostlogin 4y ago
  Eh? My crappy roof was installed in 1945 and has some life left. What sort of roofing lasts 25 years?
  - UncleEntity 4y ago
    My parents neighborhood is coming up on 25 years old and they are having to replace the layers under the roof tiles. The tiles themselves will probably last a thousand years but the under layer has a lifetime. They pull off the tiles, replace the waterproof layer and put the tiles back on — apparently takes just a couple days and they get better nails so the tiles don’t fall off during the windy monsoons.
  - encoderer 4y ago
    Asphalt singles
    - lostlogin 4y ago
      Is there a reason that corrugated iron, concrete tile or similar aren’t used? They last near indefinitely if looked after, and a hell of a long time if not looked after.
      - encoderer 4y ago
        They are very cheap.
  - pokeymcsnatch 4y ago
    Afaik shingle roofs (common in US) need replacing every 10-20 years.
    - jeffbee 4y ago
      The president of the roofer's lobby has entered the chat! Composition roofs need to be replaced when they are worn out and not before that. Good materials competently installed could last 50 years, more in mild climates. If you have the kind of weather that will wear down a roof in 10 years you probably cannot have solar panels.
    - kibwen 4y ago
      I actually wonder how solar panels reduce the rate at which a roof deteriorates. The panels themselves should bear the brunt of the light and rain that the shingles below them would otherwise endure, but on the other hand the panels don't cover the entire roof, so maybe at best you'd need to replace less of the roof but on the same schedule.
      - pokeymcsnatch 4y ago
        Yeah, that makes sense to me. I don't know the specifics of shingle deterioration, but just having them physically shielded from light and precipitation has got to drastically improve their lifespan. That's a good point about only part of the roof being protected though.

by pkulak 4y ago

AND considering that replacing only the panels has to be far cheaper than the initial installation, if they do drop too much in 25 years. So long as your roof is still okay, I suppose.

matwood 4y ago

Just bake new panels into the cost of a new roof. It's probably time for both after 25 years.

lostlogin 4y ago
Eh? My crappy roof was installed in 1945 and has some life left. What sort of roofing lasts 25 years?
- UncleEntity 4y ago
  My parents neighborhood is coming up on 25 years old and they are having to replace the layers under the roof tiles. The tiles themselves will probably last a thousand years but the under layer has a lifetime. They pull off the tiles, replace the waterproof layer and put the tiles back on — apparently takes just a couple days and they get better nails so the tiles don’t fall off during the windy monsoons.
- encoderer 4y ago
  Asphalt singles
  - lostlogin 4y ago
    Is there a reason that corrugated iron, concrete tile or similar aren’t used? They last near indefinitely if looked after, and a hell of a long time if not looked after.
    - encoderer 4y ago
      They are very cheap.
- pokeymcsnatch 4y ago
  Afaik shingle roofs (common in US) need replacing every 10-20 years.
  - jeffbee 4y ago
    The president of the roofer's lobby has entered the chat! Composition roofs need to be replaced when they are worn out and not before that. Good materials competently installed could last 50 years, more in mild climates. If you have the kind of weather that will wear down a roof in 10 years you probably cannot have solar panels.
  - kibwen 4y ago
    I actually wonder how solar panels reduce the rate at which a roof deteriorates. The panels themselves should bear the brunt of the light and rain that the shingles below them would otherwise endure, but on the other hand the panels don't cover the entire roof, so maybe at best you'd need to replace less of the roof but on the same schedule.
    - pokeymcsnatch 4y ago
      Yeah, that makes sense to me. I don't know the specifics of shingle deterioration, but just having them physically shielded from light and precipitation has got to drastically improve their lifespan. That's a good point about only part of the roof being protected though.