It is time now where all your shingles, brick tiles, and slates are replaced with durable metal roofing. Have you ever thought about why the change happened? Because people want a roof that lasts for a long time and should not be replaced even after decades. This thought led to the innovation of metal roofing in Chennai. Metal roofing serves as the best option for the roof because of its longevity, less maintenance, and appealing outlook, and many more. However good your roofing may be, you need an extra layer of protection to make them sustainable. It is where the underlayment comes into play which makes your roofing more resistant to withstand the extreme temperature. Underlayment is nothing but a material placed beneath the roofing sheets for extra protection from moisture, vapor, water, and other weather impacts. The underlayment is placed directly on the roof sheathing or deck. Hence, in this post, let us see the top underlayment options for your metal roofing.
Felt Underlayment:
The felt underlayment is one of the commonly used underlayments between the roofing and the deck. The felt underlayment is made of fiberglass or saturating paper mixed with the asphalt. Generally, these underlayments are available in two types, namely No.15 felt and No.30 felt. However, JSW roofing sheet dealer in Chennai prefer No.30 felt underlayment for their roofing. The felt underlayment is ideal for the steep-sloped roofing. It is cost-effective compared to other underlayment products. However, the only concern is that the felt underlayment can’t endure higher temperature environments and doesn’t work well for low-sloped roofing. But, are have greater water seeping. So, felt underlayment is used depending upon the purpose and surroundings. The felt underlayment is also known as asphalt-soaked felt, felt paper, and tar paper.
Self-Adhering Membrane:
It is a “peel and stick” material that is applied to the roofing deck directly. The self-adhering membrane is a butyl-based or rubberized asphalt adhesive placed on the polyethylene carrier sheet. So, you have to peel off the membrane from the sheet to place it on the roofing deck. Unlike felt underlayment, the self-adhering membrane has good resistance to a higher temperature. They offer an extreme barrier to air which prevents the roof from ice damming. But just ensure that the sheet is placed correctly on the roof deck if it can cause the membrane to peel off over time. JSW color coated sheets and self-adhering are the perfect combination to extend the life of your roof.
Synthetic Sheet:
It is one of the popular underlayments that got popular in recent times. The synthetic sheets are made of polypropylene or polyethylene mixed with a polymer to form a protective layer. The synthetic sheet between the roofing and deck provides extreme resistance to tearing, cracking, and other damages. The synthetic sheets are slightly expensive compared to other underlayment products but have higher longevity.
Thus, these are the commonly used underlayments beneath your roof. You can even purchase high-quality purlins from z purlin manufacturers to make your roof stay in place.