Just paint the casing with acrylic water proof paint. The casing will be covered with the rubberized acrylic paint that will last 10 years. Then repaint. I used pentens t200

That is provided you have the paint. The paint 5 litre costs RM65 enough to cover one porch slab. I used the left over to paint over rot wooden knight handle, plastic handles of grass trimmer, garden plastic hose connectors, iron mesh, water pressure meter, hammer handle just dip in the paint and let dry. The rubberized paint is very thick when painted on the iron mesh is just like our home wire insulated with rubber. Since it is UV protection anything under the sun and rain is good to use.

No, it is not the clear acrylic paint. The clear acrylic paint is very thin even with multiple coats. This paint comes with 3 solid colors, grey, white and green. It is a waterproof paint membrane for roof slabs prevent water seepage. The paint can be stress like rubber when dried. Can be found in hardware shop, lazada, shopee. Just type pentens T200

Choose between durability UV protection and beauty, ha-ha. Anyway if you want original colour you can search taobao for clear transparent paint. You know China have everything under the sun.