# How Do You Measure a Roof Without Measuring It?

**Roof** surfaces are **measured** in “squares”. A **roofing** square is equal to 100 square feet of the **roof**. To determine the number of squares on the gable **roof** example in this post, divide its total of 2400 square feet by 100 (2400 ÷ 100 = 24). This means you would need 24 squares of shingles to cover that **roof**.

#### How do I calculate the size of my roof?

**length**by your house width to get the area. (For example, 40 feet x 30 feet = 1,200 square feet.) Next, multiply the area by your

**roof’s**pitch. (1,200 x 1.05 = 1,260 square feet.)

### How to Measure a Roof From the Ground

**Measure** out from the face of the wall below the fascia or rafter tails to a point that aligns with the outer edge of the **roof**. Multiply this **measurement** by the length of the **roof** from end to end, and add this to the first result. Double the result to determine the total area of the **roof** at both sides.

#### How do you measure the pitch of a roof from the outside?

**measure**the

**roof pitch**, you’ll need an 18- or 24-inch level, a tape

**measure**, and a pencil. First,

**measure**12 inches from one end of the level and make a mark. Then, in the attic, place the end of the level against the bottom of a

**roof**rafter and hold it perfectly level.

#### Is the square footage of a house the same as the roof?

**Square Footage** of Your **Roof**:

So a trick to estimate your **roof** size is to multiply the **square footage** of your **house** by 1.5 (ex: A 2,000 **square foot house** will have a **roof** that is approximately 3,000 **square feet**).

### How much does it cost to reroof a 1000 square foot house?

House (& Roof**) by Square Foot | Re-Roofing Cost* |
---|---|

1,000 (1,054) | $4,000 – $5,500 |

1,100 (1,160) | $4,200 – $6,000 |

1,200 (1,265) | $4,500 – $6,500 |

1,500 (1,581) | $5,500 – $8,000 |

#### How much is a square of shingles?

**Shingles**are sold by the

**bundle**and by the

**square**. A

**square**is equal to 100

**square**feet and will cost anywhere between $100 and $1,800. A

**bundle**is around 1/3 of a

**square**and

**costs**an average of $30 to $600.

#### How many square feet are in a bundle of shingles?

**three**bundles to a square. Each bundle covers

**33.3 sq**. ft. of roof area—which is close enough to the

**32 sq**.

#### How much does it cost to tear off and replace a roof?

**from $1.20**-$4 per square foot to tear off and replace a roof with asphalt shingles. For a 1,700-2,100 square foot ranch-style property, that costs about

**$1,700**-$8,400. However, roof replacement costs increase when you use higher-end roofing materials.