All homeowners should know what the roof is made of, what different materials make up the roof, when replacing, as they often overlook this observation that will help them understand the impact of the cost, longevity and performance of the material depending on its quality. What is commonly called roof underlayment is overlooked because it is out of sight, other than metal roofs and shingles there is a layer of protection both above and below the roof deck, this underlayment plays an important role against moisture damage and the safety of your home.
Roof underlayment, what is it?
It is the material that sits between the roof sheathing and the shingles, it is the base that supports the shingles (roof decking) and is usually composed of plywood, this barrier resists water and provides a secondary protective layer against the elements.
Differences between synthetic and felt roof underlayment
Both synthetic underlayment and felt underlayment for roofs have their own characteristics depending on the choice of the quality of materials to be used, how the roof is designed, budget and above all the geographical location.
Characteristics of a synthetic underlayment
Synthetic roofing underlayment when properly installed offers greater water resistance and better protection against the elements.
Durability: It is made of biopolymers which gives it greater longevity and resistance, it is more durable because it resists moisture and exposure to UV rays, it has more than twenty years in the market, performance levels should be analyzed as it is not a standard manufactured product, ask your contractor to provide you with the necessary assistance.
Weight : In terms of weight it is lighter. It weighs from 40 to 100 grams per square meter, which facilitates transportation and installation.
Installation: It comes in rolls of considerable width and length compared to felt rolls, which covers more roof areas and because it is easier for workers to handle, it can be installed more quickly.
Secure : Many of these synthetic underlayment surfaces have a wide range of non-slip surfaces, which allows workers to walk on safely, as they are marked with overlapping guides, they optimize accuracy and consistency in installation
Moisture Resistance : Synthetic underlayments offer greater resistance to weather, are designed to repel water, are more resistant to leaks and moisture in the home, giving homeowners peace of mind.
Weight: It is heavier than synthetic underlayment. Its weight per square meter is. Felt No. 15 weighs from 7.5 to 12.5 lbs and Felt No. 30 weighs 16 to 27 pounds. The latter is usually stronger and more resistant to tearing during installation and weathering.
Installation: As it is heavier, it makes it difficult to move and install, it cannot be left exposed for hours because it can dry out in the heat, which makes the felt less resistant to humidity, and during installation it can tear under tension.
Insurance: It presents slippery difficulty, which is a risk for workers during installation, in addition to the risk posed by the weight of the material.
Moisture resistance: Felt underlayments are exposed to moisture and absorb water which causes the felt to wrinkle, making it difficult to install shingles because the level is not uniform.
Roof Underlayment Cost
When it comes to building or replacing a roof the cost is the first thing that comes to mind, in this alternative, the underlayment does not increase so much the budgets for roofs, depending on the quality and durability you have two alternatives to consider. This presents a cost between $7 to $10 per square meter.
Cost of a felt underlayment
This underlayment costs about $5 per square meter.
If you are planning to build or renovate a roof, you should take into account the advantages of an underlayment, as it serves as insulation against drafts, a barrier against elements hitting the roof as well as noise from rain, uniform surfaces look better and protect the home. Synthetic roof underlayment offers greater long-term advantages in safety, durability and investment than felt roof underlayment.
Look to your trusted builder for advice, support and a quote to professionally and responsibly solve your problem. If you’re in the market for new roofing in Upper Saint Clair, PA, turn to Pittsabana Contracting Services LLC. This local roofing company employs team members who are certified by CertainTeed and committed to delivering premium service on every job, from repairing storm-damaged commercial buildings to fully replacing residential roofs. Call (412) 580-6567 to speak with a friendly staff member to schedule service or visit the website to learn more about how they’ll help you.
