Synthetic Roofing Underlayment

Synthetic Roofing Underlayment -- What You Need To Know

Synthetic Roofing Underlayment

There has been a revolution of sorts in the last several decades within the home construction industry -- specifically in the area of roofing construction. In the past, homebuilders used a type of special-purpose felt that was saturated with asphalt underneath of asphalt shingles or other roofing materials. Now that has all changed -- synthetic roofing underlayments are now the standard across this industry.

Why the switch? Simply put, synthetic roofing underlayments provide much better protection from the elements, and better resist tearing, as well as wet and damp conditions, than the older felt material.

What are synthetic roofing underlayments typically made from? The word "synthetic" gives it all away -- synthetic roofing underlayments are typically manufactured from such substances as fiberglass, polyester, or polypropylene. There are distinct advantages to using this new material -- synthetic roofing underlayment can, of course, withstand the ravages of outdoor weather; in addition it is safer to use: synthetic roofing underlayment can be manufactured with a non-slip surface, so that roofers will not slip and fall while walking on it. In addition, modern synthetic roofing underlayments way less, thereby placing less stress on the roofing structure.

In addition to those advantages, synthetic roofing underlayment also has the advantage of being breathable -- believe it or not, although they provide protection from the water, they nevertheless allow moisture to pass out -- and this is important, as it helps to prevent your synthetic roofing underlayment from developing mold. And because you can purchase synthetic roofing underlayments in larger widths and lengths, it is actually quicker to lay down than with other types of roofing underlayment.

Not that these new materials are problem-free. One of the big problems with synthetic roofing underlayment is the fact that nails and other fasteners which are used to attach it to the roof will not seal as they do when traditional felt underlayment is used. This becomes a problem when, due to expansion and contraction during heating and cooling of the roof, the synthetic material can become stretched and begin to pull away from the fasters.

When this begins to happen, moisture could begin to seep into the roof, along the interior surface of the nails or other fasteners. To combat this, it is possible to purchase synthetic roofing underlayment with an asphalt layer that will bind and seal around the nail holes.

In addition, synthetic roofing underlayment has been known to blow around on roofs -- particularly roofs with very steep slopes -- on windy days. Again, recent advances in synthetic roofing underlayment products have produced a material which will remain in position once it has been laid on the roofbed.

As far as cost is concerned, it is true that when you purchase synthetic roofing underlayment, you will pay more than you will for the traditional felt material -- but the cost is not excessive, especially when you consider the superior protection that synthetic roofing underlayment provides as compared with the older materials. Paying just a little more for this high-tech material will, in the end, be worth it.