CLAY/CONCRETE ALMOST FOREVER
Clay or concrete roof tiles (right) would appear to have it all: good looks, fire resistance, and extreme durability. Recent innovations also address issues of storm water management and enable cool roof capability. But the high cost of buying and installing masonry tile roofing has relegated its use to regional styles and high end housing. Since 2004, its share of the residential roofing market has plummeted by more than half, to about 7%.


Nonetheless, a quality tile roof that is installed over a heavy-duty underlayment and screwed to the roof deck (not just mortared) should last for decades— if not a century or two—before it’s time to remove them, replace the underlayment, and put the tiles back on. GB


CLAY OR CONCRETE TILE -
VIRTUES
> Durable
> Abundant resource and low embodied energy
> Natural insulating qualities
> Class A fire rating
CAVEATS
> High cost (materials and installation)
> Heavy
> Some types may be susceptible to freeze-thaw damage


 


ROOFING DURABILITY


While numbers vary somewhat by brand and installation quality, the chart at left offers a broad overview of the long term cost of different roofing, based on its expected lifespan and maintenance. Created by a roofing reseller, the chart shows only a few brands, but as a general rule, you get what you pay for. An early initial investment in metal or high-end laminate shingles pays back nicely over time.—Editor


11.2011
20

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