in snow country, we like 6″ but 4″ would do also… 1″ seems like more of a trip hazard…
if they are flush.. like in barrier-free housing.. try to keep the entrance under a generous overhang
Mike Smith Rhode Island : Design / Build / Repair / Restore
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6" if right out in the open and four inch if under a roof like a porch setting.
I heard someone here recently say that in their jurisdiction it had to be no more than one inch.
Must be down south with no snow or rain.
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"1" seems like more of a trip hazard..."
I had a disussion about flooring transistions in general a few months ago. And it got me to thinking. I check my front door. This is an elevated walkway with cedar planking and under cover and then you set into the house with a tile floor. The door is steel with an adjustable threashold, about 1" over the inside floor.
I found that there was 2" between the inside floor and the walkway deck. I could have sworn that they where at the same level. But transistioning between the different types of floors, going through the door way, and have to lift you feet over the threshold anway the difference is not felt.