Proper way to clean a flat asphalt roof?

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Old 07-21-15, 10:25 PM
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Proper way to clean a flat asphalt roof?

I have a flat roof where the top layer is a "modified bitumen", installed about 5 months ago.

There are some leaves from overhead trees that fell on the flat roof and then it rained so now there are some wet debris accumulated on the roof.

What is a good way to clean the roof? If it's dry I can use a leave blower no problem, but when it's wet with the leaves, can I use a push broom to push the wet debris off the roof, and by doing so would pushing hard on the roof cause damages to the top layer of the roof?
 
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Old 07-21-15, 10:35 PM
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Why can't a leaf blower work when it's wet? I've used one to clean out gutters with wet gunky leaves in it.

I'd avoid a broom as much as possible.
 
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Old 07-22-15, 04:07 AM
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Why can't you wait for the leaves to dry and then use the leaf blower? I agree a broom isn't ideal and never, ever use a pressure washer!
 
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Old 07-22-15, 05:50 AM
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My leaf blower is powerful enough to blow rock off a gravel driveway so part of the problem could be the leaf blower. When dry leaves are easy to blow and even a small electric one can move them but if they are wet or matted down it may take a strong hand held gas blower or a backpack model.
 
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Old 07-22-15, 08:54 PM
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First, I hate getting on the roof, I kind of have a phobia using extension ladders.

Second, I am in Miami, and it rains every other day in the summer months...so the leaves will NEVER dry. It's going to be either wet or very wet. When more and more leaves fall on the roof and it gets matted down I couldn't move it with a gas blower. The gas blower will blow the water off but the caked together leaves are too heavy.
 
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Old 07-23-15, 06:41 AM
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Time for a bigger blower. If you don't like getting up there and your blower isn't powerful enough consider hiring someone. Most landscape maintenance companies use powerful backpack blowers that could move the leaves. You just need to find one that has a ladder and have them hit your roof a few times a year.
 
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Old 07-23-15, 08:16 AM
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Maybe it's time to trim/cut some trees
 
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