The underlayment goes on top of the roof deck and under the roof’s covering. It protects the home from moisture damage.

The 2 types of underlayment

• Felt: a natural substance
• Synthetic: a man-made material

Roofing service in San Mateo knows that chief benefit enjoyed by homeowner that has chosen to use felt is because felt costs less than synthetic.

Drawbacks associated with felt underlayment

• It dries out if exposed to air for more than a few hours
• That exposure causes the underlayment to leach oil
• It is heavier than the alternative choice (synthetic)

Any money saved at the time of purchase might get used to cover the higher cost for any needed replacement of the roofing. A homeowner would need to cover the higher labor costs, if such a replacement were to force the laborers to work with a heavier material.

Benefits linked to utilization of synthetic materials in underlayment

• Those contain long-lasting polymers
• Those same materials are moisture resistant. In other words, the synthetic fibers do not absorb water.
• Workers that must install synthetic underlayment should be able to complete the job quickly, barring the emergence of any unforeseen problems.

A contractor could promise fast installation, due to the fact that the synthetic product gets sold in wider and longer rolls, than the rolls used for the alternative product (felt underlayment). Underlayment that contains synthetic fibers is tough. It is thicker and stronger than the alternative choice; moreover, it does not tear easily.

Even after exposure to ultra violet light, the polymer-rich product manages to hold up well.Mold does not grow on a man-made (synthetic) material. The absence of mold comes with the promise of fewer chances for development of leaks.

Drawbacks to be considered by those homeowners that have shown a preference for the lighter and tougher of the 2 products

Although it offers the promise of a fast installation, man-made underlayment has to be installed correctly, in order to guarantee delivery of a moisture-resistant and rolled material. Once deprived of one of its desirable qualities (resistance to moisture) the lighter and tougher underlayment’s freedom from the absorption of water disappears.

The roofing industry has not created a method for standardizing the features of its more expensive choice, when homeowners must decide between 2 types of protections for the roof deck. Due to the absence of such standardization, contractors could struggle to obtain a roll that has the ability to meet a given customer’s requirements.

The final drawback has already been mentioned. It is the cost associated with choosing a rolled product that has so many desirable features. Each homeowner must decide whether or not the enjoyment of such features equals in value the high price of what has looked like a more durable roofing supply.