My covered patio has a handrail around it. I would like to use 4x8x5/8" siding to keep the rain and snow from blowing in between the handrail and the floor. (I think this is referred to as a "knee wall" but not sure.) I have a air staple/nail gun that shoots 16 ga brads. I plan to use it to shoot 1-1/2 inch finish brads through the siding to the 2-inch framing boards. Will these brads be sufficient?