A Roofing Company in Iowa City Answers; Should You Go With Synthetic or Felt Underlayment? — When you’re talking to a roofing company in Iowa City, you might only be thinking about your roofing shingles or metal roof. However, there is another layer of roofing that you should be aware of. Directly on top of your roof deck is underlayment, which is critical in protecting your home from seeping moisture.

There are two types of underlayments that a roofing company in Iowa City most commonly uses, felt and synthetic. Each come with their own benefits and drawbacks and work better for specific homes.


Roofing Company in Iowa City — Felt Roofing Underlayment

Felt roofing underlayment is an older, well-known type of underlayment. It is made by mixing saturating paper or a fiberglass mat with asphalt. A roofing company in Iowa City, typically uses one of two types of felt underlayment, a No. 15 or a No. 30.

A No. 30 type of felt underlayment is usually thicker and stronger than a No. 15 and is less likely to tear or rip during installation or severe weather.


Roofing Company in Iowa City — Pros of Felt Roofing Underlayments

Many roofers believe that the biggest pro to felt underlayments is that it’s cost-effective. They tend to cost less than synthetic underlayments, making them an excellent option for homeowners on a budget.

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Roofing Company in Iowa City — Cons of Felt Roofing Underlayments

Although it’s cheap, a roofing company in Iowa City, has run into problems working with felt underlayment. Cons of working with this material include:

  • Prone to tearing
  • Can absorb moisture and wrinkle
  • Heavier than synthetic underlayment
  • There is less felt underlayment per roll compared to synthetic


Roofing Company in Iowa City — Synthetic Roofing Underlayment

Synthetic roofing underlayment is a popular choice because it is water-resistant and holds up well in severe weather. These underlayments are made from durable polymers that add strength and longevity to your roof.

Make sure to do some research before purchasing synthetic roofing underlayment. One thing to note, this material is not standardized; so different manufacturers produce the materials differently.


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Roofing Company in Iowa City — Pros of Synthetic Roofing Underlayments

Synthetic underlayments are becoming a staple in the roofing company because they are more practical. Some pros to using synthetic underlayments include:

  • Strength 
  • Longevity
  • Easy installation
  • Safe to use
  • Water-resistant 

Synthetic roofing underlayments are also made of plastic, so they are resistant to mold growth, while felt underlayments are not.


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Roofing Company in Iowa City — Cons of Synthetic Roofing Underlayments

Although a roofing company in Iowa City will typically prefer to work with synthetic underlayments, there are still some drawbacks to the material. Since they are not standardized, the cost of synthetic roofing underlayments varies drastically, so it can be difficult to pinpoint an exact price.

However, it is believed that even though you spend more money upfront when buying synthetic underlayments, you save more in the long run because of their long lifespan.


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At Robison, we are your trusted source for commercial roof repair in Iowa City. We provide fast and professional service for every kind of roof. Our team of professionals is here to service your roof from start to finish, we even provide residential roof repair in Iowa City. We are also a metal building contractor in Iowa City.

For a free estimate on your next project, fill out an online form here or call us at 319-363-0110.

Roofing Company in Iowa City

Robison is committed to providing you with the best options for your roof system and design. We approach every roofing project with a focus on functionality, cost, and aesthetics. Each project is handled with unique perspective and integrity. Ingenuity and an eye for solutions make Robison the obvious choice for residential, agricultural, commercial, and industrial roofing systems.