> How can a solid slate roof need replacement after only few decades?
You will find when you Google "American roofs" that one of the top "People also ask" is "What are American roofs made of?", which goes on to say to your horror:
An asphalt shingle is a type of wall or roof shingle that uses asphalt for waterproofing. It is one of the most widely used roofing covers in North America because it has a relatively inexpensive up-front cost and is fairly simple to install.
The dominant American roof uses inferior technology because it inexpensively lasts on average about four mortgage holders (average US mortgage holding period is seven years), by which time IBGYBG. And to think many believe China has cornered the market on the "cha bu duo" mindset. To be fair, unless you are paying well over average rates, I've yet to see a country where the average residential construction shows a lot of attention to detail, just like in many other industries.
> The dominant American roof uses inferior technology because it inexpensively lasts on average about four mortgage holders (average US mortgage holding period is seven years)
Interesting contrast with the UK where a typical mortgage duration is 25 years (and the roofing material is designed to last at least 4x that, and with appropriate repairs several hundred). But I think the UK roofing approach is more driven by regulations (and the typically higher housing cost relative to incomes much more by by land shortage)
You will find when you Google "American roofs" that one of the top "People also ask" is "What are American roofs made of?", which goes on to say to your horror:
An asphalt shingle is a type of wall or roof shingle that uses asphalt for waterproofing. It is one of the most widely used roofing covers in North America because it has a relatively inexpensive up-front cost and is fairly simple to install.
The dominant American roof uses inferior technology because it inexpensively lasts on average about four mortgage holders (average US mortgage holding period is seven years), by which time IBGYBG. And to think many believe China has cornered the market on the "cha bu duo" mindset. To be fair, unless you are paying well over average rates, I've yet to see a country where the average residential construction shows a lot of attention to detail, just like in many other industries.