We have an outdoor laundry room - a small square hut not much bigger than the size of the washing machine. It has two walls with windows and a door (it's attached to the side of the house) but it isn't exactly sealed from the elements, so while rain doesn't directly come in, it gets cold and damp when it's cold and damp outside!
I'm about to put a shelf in above the washing machine so I can put a tumble dryer on it. I'm using 50mm thick batons as a rail underneath it to support the shelf. However I don't know what material to use for the shelf. A dryer weighs about 25kg I think so I need to allow for 40-50kg for when wet clothes are in it/it's being leant on. I was originally thinking of using kitchen worktop cut down to size as it would look nice and be a durable surface. Plus it's about 40-50mm thick which should stop it bending or warping. However I'm not sure how it would survive in semi-outdoor conditions.
My other choice would be marine-ply. I'm not sure how thick I can get it or how much it would cost in comparison (I know it's an expensive option compared to normal ply, but it may be irrelevant on such a small piece). Also, I'm not sure how well suited it is for taking a constant load. My experience with plywood is that it warps easily - but then I may have just being overloading it!
Any advice?
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