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Question DetailsAsked on 5/12/2017

how many shingles to replace a hip roof on a 1100 sq. foot home

Home is 24x45 and I think 6/12 rise

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Depends on the brand and of shingles - many three-tab conventional shingles come 3 bundles per square (a "square" is 100 square feet of coverage) - but can range from less than three to as many as 5 bundles per square - plus wastage/cutoffs of from about 5%-25% depending on complexity of the roof and number of angles and valleys and such, starter and ridge courses needed (and if doing with special or regular shingles), and on the skill or desire for speed versus minimizing materials use by the contractor - some have very little wastage, some toss many or all cutoffs in the interest of speed.


And of course the coverage on the bundle assumes the manufacturer recommended tab exposure - at times in high wind or hail areas that normally 2-layer coverage is closed up to a smaller exposure to give three layers of coverage, so each bundle covers a much smaller area. The manufacturer almost always labels the bundles (and puts on website) the coverage (without any wastage taken ninto account) at their recommended exposure. Just be careful - some Canadian and rarely European specialty shingles get into the US and are labelled in metric terms - some for a metric coverage area, some metric dimension shingles but advertised based on a standard US 100SF square, so be sure what the label is saying. [a MEtric "square" is generally stated as 10M2 - 10 square meters, or about 10.75 squre feet - so quite a difference between a metric and a US "roofing square".


And of course, depends on the roof overhang of your house - for instance, a full hip roof of your size would be about 1200SF of coverage area (12 squares) if zero overhang at 6:12 slope, but with 3 foot overhang all around would be more like 1700SF (17 squares) of coverage area.


You can find a number of other previous similar questions about shingle coverage, wastage, buying spare bundles where the unopened bundles are returnable for refund, recommended amount of spare shingles to keep for future repairs, etc in the Home > Roofing link under Browse Projects, at lower left.

Answered 1 year ago by LCD




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