Concrete tiles have grown more competitive in price due in part to the rising costs of petroleumbased products such as asphalt shingles.
Porous concrete roof tiles.
Compared to unsightly weather beaten asphalt shingles and their replacement costs concrete roof tiles offer an affordable and economical alternative especially when considering their life cycle cost.
Porous roof tiles collect dirt.
But you can rest easy because it s all a myth concrete roof tiles don t become porous.
Although this concerns mainly the looks of your roof in the long run this may result in the enlargement of these currently very small holes.
Understandably when you re dealing with a concrete roof this is a big concern because they are so exposed to the elements the last thing you want to happen is to have your concrete tiles fall off your roof.
Just like the pores on a human face the porous roof tiles may collect all kinds of dirt in the holes and cracks.
Cedar shakes shingles.
For those who don t know porous in this case means the concrete roof tiles will let water through.
In practice the absorption of water by capillary action during periods of heavy rain would increase their weight by only 5.
The porosity of concrete roof tiles measured under laboratory conditions is usually less than 10.
This weight increase is extremely unlikely to cause structural roof failure.
Given that porous roof tiles are weaker than tiles that aren t suffering from the same issue it means they can also present a danger.