Gutters and gutter guards are essential for redirecting excess water off your roof and away from your home’s foundation. However, the installation process has numerous challenges that the average person might struggle to overcome. Custom Cut Gutters, northwest Iowa’s reliable gutter service, knows how to measure gutter size correctly before installation. 

Believe us when we say the process involves a lot of math. Learn more about it below.   

Know the Two Gutter Sizes

The two most common gutter sizes are as follows:

  • Five-inch K-style gutters: This is the standard gutter size for buildings with flat roofs or shallow roof steeps. 
  • Six-inch half-round gutters: This size holds up to 50 percent more water and works best for houses with steep, peaked roofs. 

Your gutter expert will identify the best option for your home’s architecture. 

Drainage Area Calculations

Water flow depends on gables, peaks, and other steep declines. For example, if your home has gables, more water will travel down those gables at a faster pace. Therefore, you need downspouts near those slopes. 

Calculating the drainage area where the water comes out will determine the ideal downspout size and location. 

Factoring Roof Pitch

The roof pitch is the number of inches your roof rises for every foot of depth. Your installer measures the width between one slope end to another and the rise from a slope’s base to its peak. They’ll find the roof-pitch factor using a two-foot leveling tool and a measuring tape. 

Calculating Rainfall Intensity

Another part of learning how to measure gutter size correctly involves calculating the rainfall your region receives throughout the year. The installer needs this information to determine the volume size for the downspout and gutter. Buildings in regions with more rainfall need larger gutters and spouts to accommodate drainage. 

Otherwise, your gutters may not contain the water properly, leading to overflow. Overflowing gutters can weigh down your roof and warp its structure. 

Measuring the Gutters

Once your installer determines your roof measurements, drainage calculations, and potential rainfall intensity, they will measure the length and width of the gutter components. They multiply the drainage area’s square footage by the roof-pitch factor, then multiply this number by the region’s rainfall intensity. 

The equation’s solution, known as the adjusted square footage, confirms the gutter style that will best suit your property. Your installer might also recommend gutter guards, leaf screens, and other accessories, making your home stronger against unpredictable weather patterns. 

Why You Need Professionally Installed Gutters

What happens if you forgo gutter installation and allow the rainfall to spill over your roof’s edge?

  • The water could pool around the foundation, seeping into crawlspaces and basements.
  • Poorly installed gutters will weigh down the roof, paving the way for attic leaks and warped roofing materials. 
  • When excess rainfall settles into building materials, it creates an environment for mold infestations, which may lead to health complications. 

Custom Cut Gutters Knows How To Measure Gutter Size Correctly – Contact Us

Do you know how to measure gutter size correctly? The gutter experts at Custom Cut Gutters do! We also know all about fixing a sagging gutter and other gutter repairs. Call 712-262-1013 for a service estimate.

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