Rain Blowing Under Roof Tiles

Some skylight installations leak the day they are cut into a roof.

Rain blowing under roof tiles.

Aluminum fascia covers are typically tucked under the roof drip edge and face nailed every few feet. Wind driven rain can also be a major problem. The only means of prevention is to install membranes under the roofing. Wind blown rain leaks.

This will stop the rain getting under and causing roof leaking by wind driven rains. Only drips really and only in heavy rain when the wind is blowing in the right wrong direction. The good news is replacing a cracked tile is a twenty minute job in most cases. The membranes won t stop the ice but will stop water leaks if installed properly.

Hemming the roof edges. Here is a sample pic of the valleys. Cement tiles give the appearance of a tiled roof but the cost is comparably cheaper. It s a concrete tile roof and the valley between the main roof at 45 and another smaller section that is also at 45.

This is usually the result of a poor selection of skylights or a faulty installation. The irc currently has no guidelines for the instal lation of fascia covers. It this is the case you need to create a breathable shield to slow the driving rain drops while still allowing air flow. If your roof vent leaks during heavy rain the rain may be blowing up under the hood and into the vent.

This video shows one possible way to do that. There are four that leak a bit and two of those a fair bit. If you can get into the loft next time there is heavy rain wind see if the pipe is wet at all. It is quite possible that your roof doesn t actually have a leak but the wind driven rain can cause the sheathing to get wet inside and this may give the appearance that you have a leak when you haven t.

Cement tiles are a fantastic choice for areas with extreme wind. Once again you could actually have a good roof and wind will drive water up and under your roofing materials. The trouble is it is difficult to find the cracked tile without putting up a ladder and having a good look. Hemming the edges of the roof means bending the underneath to an angle of 180 degrees.

Wind driven rain will batter your roof and water will escape through any cracks no matter how small they are. As soon as holes are cut on a roof to put skylights in the natural waterproof nature of roofs are violated. Could it be that the water is blowing back under the vent tile.