focus on infiltrations of water on a terrace roof - concept image with a stone pavement seen through a magnifying glass

activity alertness architecture attention block building built cement checking concept concepts concrete construction cracked cracks damage exterior floor flooring focus footpath glass ideas industry infiltration interlocked level magnifier magnifying material outdoors patio paved pavement paving pedestrian rain research roof rooftop searching shape sidewalk stone street structure structures surface terrace tile water wet zone