Roofing Process

Roof Deck Preparation

What exactly is a roof deck and why does it matter?
That’s a great question! The roof deck is the roofing material layer found in between the primary structural components and the insulated layers in a roofing system. Roof decking is applied over roof trusses to create a smooth surface to accept roof felt, shingles, shakes, or other finishing materials. Roof decking needs to be strong enough to support the shingles and snow and fastened well enough to withstand high wind. Although the roof deck does not get as much recognition as your shingles, its purpose should not be overlooked. The roof deck is the most important part of your roof, just like the foundation of your home is the most important part of its structure. The following are the most common types of roof decking.


Intake Vents: Air intake vents are used to allow outside air to enter into attics and ventilation spaces. Intake vents should be located along a roof assembly’s lowest eave at or near soffits or eaves.

Ice and Water Protection

Any roofing system has to have protection from water-related issues. This includes wind-driven rain, flowing water, ice dams, seepage and other water problems. A roofing underlayment system can be used to alleviate water concerns. The best product to use for these water concerns is an ice and water shield product.
Used under standard type roofing and conventional asphalt shingle, ice and water shield will effectively resist water penetration. Areas around vents, chimneys, skylights and valleys are also protected from water intrusion. Anywhere water tends to collect and flow can be kept safe from damage by using an ice and water shield product.


There are three basic types of underlayment used beneath roofing materials:

• Asphalt-Saturated Felt
• Rubberized Asphalt
• Non-Bitumen Synthetic

One of the most common types of underlayment used in residential, steep-slope applications is black, ashphalt-saturated felt paper. Felt underlayment may be made from either organic or fiberglass substrate, although the organic is much more common. It’s called “organic” underlayment because it has a cellulose base.

Felt underlayment is water-resistant, but not waterproof. It’s available in two thicknesses: 15-pound and 30-pound. Fifteen-pound felt has a perm rating of about 5, although this number can rise in high-humidity conditions.

Thirty-pound felt is more resistant to damage during installation of the roof-covering material, and will protect the roof longer if it should somehow become exposed to weather. The difference is obvious, once you see them together. Thirty-pound felt is much thicker and stiffer

Our Services

Niemeyer Roofing has been in the business for 10 years with top quality workmanship. We strive to provide the highest quality of products and services to deliver the ultimate customer satisfaction. Big or small, every job gets our full attention! Check our services page for more information. Call us today for a free estimate!

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About Us

Niemeyer Roofing Niemeyer Roofing specializes in residential with 10 years of experience. We are a professional family-run business that relies on word of mouth, striving to provide the highest quality of products, services, and competitive pricing. We are honest, reliable, and provide 10 years of workmanship guaranteed. Niemeyer Roofing provides roofing services to customers all over Haldimand-Norfolk County and surrounding areas.