Why do Tile roofs fail?

Why do Tile roofs fail?

Why do tile roof’s fail? There are many reasons, but here are the two major reasons:

  1. Flashing’s, Flashing’s, Flashing’s.
    Improper style and installation of metal flashing’s such as: roof jacks, valley metal, side wall metal, head wall metal, corner flashing’s, fireplace flashing’s, skylight flashing’s, cricket flashing’s, hog valleys – you name it – flashing’s are the #1 reason tile roofs leak. Not changing the flashing’s to the proper style of flashing’s in a tile roof allows water to rot out the underlayment. This quickly turns into a leak.  It does not matter which underlayment you have, or which batten you have – if water – also known to scientists as “the universal solvent” gets onto the underlayment and it will start to dissolve or rot everything out.  Proper flashing’s and metal installation can be a small part of the re-roof cost – or a huge part, but regardless of the cost they are an integral part of the tile roof system.  You cannot have the one without the other for a tile roof to function correctly.
  2. Head lap, head lap, head lap.
    Roof tile (as is all roofing material) has specific installation instructions.  Over extending and overexposing the roof tile to the weather is an easy way for a roofer to pick up a quick 10-20% of material and save 10-20% on labor by extending the tile an extra inch or two beyond code. This isn’t always easily noticeable, but this then violates codes and makes the roof tile much more susceptible to wind blown rain, and water penetration etc….

How do you know if your roofer put in the proper flashings?

How do I know he used the proper tile lay out?  

I’ll show you. Here are a few tell tell signs. See FAQ page “How do I know my tile roof is installed correctly?”

How do roof tile systems succeed? Proper metal flashing’s, and proper installation of the tile.  Above all metal flashing’s are the key to a tile roof system.  You have heard the saying, “A chain is only as strong as it’s weakest link.”  The tile roofing industry’s weakest link is metal flashing’s, hence, theTile Roof Institute Installation Manual for Moderate Climate Regions spends about 30% of it’s details on metal flashing’s alone. Metal flashing’s should not be the weakest link because if you install them as per the Tile Roof Institute Installation Manual everything functions properly with minimal maintenance needed.  Travel just about anywhere in the world and you will see tile roofs on structures that are hundreds of years old.  How are those roofs standing the test of time? Quality and Honesty by the installer, and a good maintenance program by the homeowner.

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