If you have this type of construction, it is only a matter of time before you will have a problem of water infiltration. Over the years, the weight of the snow gives a concave curve at the top of the casing and thus creates a reservoir which accumulates stagnant water. At this point, water infiltration is inevitable.

To remedy for this situation, we must correct the case structure and solidify it first. We will give it a convex curve to remove any stagnant water. Finally, we will ensure that the coating is 100% waterproof.