Roofing felt has been a crucial component in roof construction and maintenance for over a century. Originally developed as a temporary waterproofing solution, it has since evolved to serve multiple functions that contribute to the longevity, safety, and efficiency of roofing systems. Commonly referred to as tar paper, roofing felt acts as an essential underlayment, creating a protective layer between the roof deck and the elements.
One of the primary functions of roofing felt is to serve as a temporary barrier against water intrusion during the construction or repair of a roof. It helps shield the interior structure from rain and other weather conditions before the final roofing material is installed. This is especially important in regions that experience heavy rainfall or sudden weather shifts, as it prevents moisture damage during the installation phase.
Roofing felt improves traction on the roof, which can help reduce slips and falls during installation. By providing a more secure walking surface, it helps create a safer work environment for contractors and installers. This safety feature contributes to faster, more efficient project completion without compromising worker well-being.
Another key advantage of roofing felt is its ability to serve as a moisture barrier. As warm air inside the home rises and condenses on the underside of roof shingles, the felt layer helps absorb and redirect this moisture, preventing it from seeping into and damaging the wooden roof deck. This is particularly beneficial in homes with high insulation levels, where moisture buildup could otherwise lead to rot or mold growth over time.
Roofing felt is indeed waterproof. The sarking felt, which lies between the roof’s structural base and the outer tile or slate, offers an extra layer of defense against water penetration. While it isn’t meant to be a permanent waterproofing solution, it plays a vital role in protecting the roof structure during installation and against incidental leaks.
Roofing felt is available in various grades, most commonly #15 and #30. The numbers refer to the weight and thickness, with #30 felt being thicker and more durable. #15 is generally used for lighter or shorter-term applications, while #30 is preferred for longer-lasting projects or in areas with harsher weather conditions. Selecting the appropriate grade based on your project’s scope and environmental demands ensures optimal performance and durability.
A common myth is that roofing felt can serve as a long-term solution to prevent leaks. While it does provide temporary protection, it’s important to remember that roofing felt is punctured when shingles or tiles are nailed into place. These punctures reduce its effectiveness as a standalone waterproofing layer. Roofing felt should be viewed as part of a larger roofing system, not a substitute for proper installation and maintenance.
In addition to its protective benefits, roofing felt helps provide a flat and even surface for tile or shingle installation. This is particularly useful when the underlying roof deck has slight imperfections. By smoothing out inconsistencies, roofing felt enhances the overall appearance and functionality of the finished roof.
At Homestead Roofing, we understand the vital role that roofing felt plays in a well-constructed roofing system. Our experienced team is here to guide you through selecting and installing the right underlayment for your project. Whether you’re building a new home or repairing an existing roof, we provide reliable, expert service tailored to your specific needs.
Call us today at (830) 515-7862 or fill out our online form to schedule a consultation. Let Homestead Roofing in Canyon Lake, TX help protect your home with high-quality roofing solutions you can count on.
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