Rain Blowing Under Roof Tiles

Don t underestimate the power of a 70 mph sustained wind driven rain.

Rain blowing under roof tiles.

Cracks in roof tiles need not be huge to cause a significant leak. Sometimes you think you have a roof leak when in fact the roof is fine. Our place was built in 53. Then one day we noticed water stains on the ceiling.

Over my back deck i have a flat tin roof that joins up to the main house tiles. Got the polycarbonate roofing sheets that hang over guttering but the some water runs on the underneath of sheeting and dropping under pergola. Wind driven rain will batter your roof and water will escape through any cracks no matter how small they are. Hemming the roof edges.

The tin roof in this section has a depression. Hemming the edges of the roof means bending the underneath to an angle of 180 degrees. Often a roof can be in perfect condition but because the wind drives the rain across and upwards it can get under the eave and under the roof. This creates a channel that directs wind blown rain back to the bottom of the valley.

My roof tiles are 50yo this year we were getting leaks in random places no broken tiles everything in the right place. I suspect the wind is forcing water back up and under the tiles as 1. Was thinking of getting flashing to fix it but might give the weather strip or bead of sealer underneath edge of sheeting a go first. Got it resealed and its happy days.

The tin roof pitch is very slight and 2. Hairline cracks in tiles or splits as they are sometimes called cause leaks too. Roofing cement under shingles on the edges of roofs that face the wind are also a good idea. Roofing felt also known as tar paper serves as both an extra layer of protection between the shingles and the plywood and as a temporary moisture barrier until all the.

Can roofing felt get wet. Started getting problems with broken tiles some from walking on the roof others from movement. If your roof vent leaks during heavy rain the rain may be blowing up under the hood and into the vent. Securing vents loose vent covers can allow rain to blow into the attic.

It this is the case you need to create a breathable shield to slow the driving rain drops while still allowing air flow. This will stop the rain getting under and causing roof leaking by wind driven rains. Unfortunately during heavy rain with a strong northerly wind my house leaks water into the lounge room.