How long should you see granuals from roof shingles on the ground?

Answer 1

If the roof is brand new probably about 3 months depends on how much rain you have. If the roof is older you could have a potentially big problem. The only reason granules will start to come off is the roof has inproper ventilation and is literally baking or cooking them off. I see roofs everyday that should not have failed for this exact reason. With proper ventilation a roof should last from 15 to 55+ years depending on the quality of shingle installed. Also the quality of the installation.

Answer 2

i assume that you have had a new roof installed and are seeing the sand on the ground. depending on how steep the roof is, how the roof was staged, and if the roofers opened the bundles on the roof, until you have some heavy rain and wind. many roofers will sweep or blow off the roof to disperse the sand, and other debris so that they can clean up the job site (the roof) for a better looking result. there is always a lot of sand in the packages from shipping and handling, and that will spill all over the roof when they are opened. then handling and moving around on the roof will dislodge any granules that aren't fully embedded in the asphalt. if you had three tab shingles installed, the "slots" will allow granules to get trapped behind the glue strips until rain runs down the roof hard enough to flush them out. the most important part is that the roof flatten out and adhere once it gets warm enough. good luck, and i hope this answers your question.

Answer 3

Judging from decades of cleaning out my own and neighbors gutters, this is a continuous process!

I wouldn't fret it unless you start seeing bare patches or the shingles themselves begin to curl and bump up.

Decent shingles and proper installation will usually get you 20 to 25 years of service, or more if premium ones are selected.

If this is a used home you bought and don't know the history, perhaps you should inquire to your towns building codes office. If you explain your situation, they may be able to look up when the prior owner applied for a roof permit (if they bothered to do this).

Answer 4

if you don't have rain gutters, you'll always see them, you just don;t usually see them cause they land in the gutters.

Answer 5

ticketor is right