To determine how many will be needed for starters and edges measure the entire perimeter of the roof and divide it by three.
How many bundles of shingles to roof 2500 square feet.
Since there are twenty six shingles in a bundle of twenty year shingles which is fine for starters and edges divide the result by twenty six.
Read the label carefully as some brands need a bit more than three bundles to cover a square.
It typically takes 3 bundles of shingles to cover each square of a roof.
A typical bundle of shingles weighs about 75 pounds while some premium products can weigh over 100 pounds per bundle so consider delivery of materials.
With that as background you are now ready to estimate how many shingles you will purchase for your roof project.
Shingle weight per square comparison.
It is common to use 3 bundles to a square of shingles.
However if you are using heavier shingles you will require 4 to 5 bundles for a square.
Asphalt shingles range in price from about 25 per bundle for a standard 3 tab style to around 50 75 or more for an upgraded architectural style.
Roof length measured in feet roof width measured in feet roof pitch.
To determine how many squares a roof is just divide its square footage by 100.
The average bundle of shingles covers 33 3 ft 2 so three bundles of shingles are needed per square.
There are three bundles of shingles for each square.
For example a 2 000 square foot roof has 20 squares of shingles.
This roof shingle calculator requires four basic inputs.
As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles.
When you are using 3 bundles for a square you will be getting 29 standard shingles in each bundle.
There are also 29 standard sized shingles measuring 12 inches by 36 inches in each one of these.