{"id":1685,"date":"2017-09-27T07:40:38","date_gmt":"2017-09-27T07:40:38","guid":{"rendered":"http:\/\/v2.banadaran.net\/?page_id=1685\/"},"modified":"2017-09-27T08:19:57","modified_gmt":"2017-09-27T08:19:57","slug":"most-common-mistakes-made-by-roofers-part-1","status":"publish","type":"page","link":"http:\/\/banadaran.net\/en\/articles\/most-common-mistakes-made-by-roofers-part-1\/","title":{"rendered":"Most common mistakes made by roofers \u2013 part 1"},"content":{"rendered":"
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Successful roof projects require that the roofer follows the\u00a0correct application methods. If he doesn\u2019t do the job properly, the final effect will look poor. Even the best and most expensive roofing material cannot help when application instructions aren\u2019t followed. Most importantly, every minor mistake can cause leakage. Every roof repair contributes to decreased lifespan of your roof (and it can be quite expensive as well!).<\/p>\n

In the next 4 blogs we\u2019ll be summing up some of the most common mistakes so that poor workmanship can be avoided. Let’s start with the following 5 topics:<\/p>\n

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  1. Absence of or incorrectly installed starter strip
    \n2. Improper slope
    \n3. Incorrect shingle overhangs at the eaves
    \n4. Neglecting installation of drip edge flashing at the edge
    \n5. No or improper installed underlayment<\/li>\n
  2. Leaving out the starter strip or applying the starter incorrectly<\/strong><\/li>\n<\/ol>\n

    The incorrectly installation of the starter strip (or worse, the absence of the starter shingle) brings many problems. You risk water infiltration at the eaves and shingles from the first row can be blown off.\u00a0 It can also cause aesthetical failures<\/p>\n

    Solution:<\/strong><\/p>\n

    If you are missing the starter strip, try to slide a new piece under the shingles of the first course. This new starter strip should be secured with nails and glued with bituminous mastic. Shingles and starter strips at the eaves must always be glued and protected against wind blow off.<\/p>\n

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    1. Improper slope<\/strong><\/li>\n<\/ol>\n

      Always use the right shingles to match the slope of the roof. Minimum slope for the majority of shingles is 15\u00b0.\u00a0Cambridge Xtreme<\/a>\u00a0is the only shingle that can be installed from 9,5\u00b0. For vertical walls with 90\u00b0 slope\u00a0self-adhesive shingles\u00a0must always be used.<\/p>\n

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      1. Incorrect shingle overhangs at the eaves<\/strong><\/li>\n<\/ol>\n

        The edge of shingles must overhang the eaves between 6 mm and 10 mm. More shingles overhang can cause the shingles to be blown off in high winds and fewer overhangs can allow water to seep into wooden structure.<\/p>\n

        Solution<\/strong>:<\/strong><\/p>\n

        Try to build up and slide in a new drip edge flashing to protect the wooden deck against driven water. Always secure the added metal flashing and shingles with Shingle Stick.<\/p>\n

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        1. Neglecting to install drip edge flashing at the eaves<\/strong><\/li>\n<\/ol>\n

          The missing of drip edge flashings can cause several problems at the bottom of a roof, because these flashings serve a number of purposes:<\/p>\n