The Window Geeks / Kraftsmen 10448 Yukon St NW Coon Rapids, MN 55433 US
Roof Replacement System GAF Roofing


Roofing Systems

The diagram below shows the components of a complete roofing system. As you can see, it entails much more than shingles! To ensure long-lasting functionality appropriate materials from the best manufacturers must be selected. However, materials matter little if applied haphazardly. The Window Geeks believes in craftsmanship and our carefully vetted crews exemplify this core value.

A sloped roof on any structure is very conspicuous and replacing it is an opportunity to change the overall appearance. The Window Geeks will consult with you and provide material samples to determine the best color combination and overall design.


Sheathing / Decking
Roof sheathing consists of a layer of plywood, wafer board, or wood planks nailed to the rafters. The purpose of sheathing is to decrease roof leakage by supporting external roofing materials such as underlayment’s and shingles and distributing live loads like snow. We inspect all sheathing surfaces for damage and make replacements when necessary while installing a new roofing system.

Leak Barrier
Typically referred to as “Ice and Water Shield”, these moisture barriers have adhesive on one side, which is protected by a peel-off membrane, making them self adhering. They seal around building materials used in roof replacement such as nails and staples. Building code and roofing manufacturers recommend you install ice and water shield at your eave edge, in all valleys, and in any critical areas of your roof including low sloped sections and flashings. We will help ascertain the characteristics of your roof that then determine where and what type of product to use.

While #15 asphalt tar paper has been a common building material for many years, manufacturing technology has allowed for superior upgrades to the standard while providing the homeowner with more choices in this vitally important roofing component. All areas of the roof not covered by leak barrier must be covered with underlayment and special applications might call for #30 asphalt or even synthetic materials.

In terms of installation knowledge and techniques, flashing is perhaps the most critical. Flashing a roof refers to installing the materials used for valleys, joints, edges, and any other gaps at the ends of or between shingles. Most often this is metal such as aluminum or steel but can sometimes call for copper or even lead.

The most common differentiator among 30, 40, and 50 year shingles is the weight. How different manufacturers achieve that weight difference varies. Some use more granules, some use more asphalt, and some have a thicker mat. At The Window Geeks, we only use 50 years shingles made by reputable companies such as GAF, Owens Corning, CertainTeed and IKO.

The single most preventable factor leading to premature roof deterioration, besides shoddy installation performed by an unqualified contractor, is improper ventilation. In the winter, allowing a natural flow of outdoor air to ventilate the attic helps keep it cold, which reduces the potential for ice damming, which can cause water infiltration and roof damage. Proper insulation and air sealing also keeps attics cold in winter by blocking the entry of heat and moist air from below. In the summer, natural air flow in a well-vented attic moves super-heated air out of the attic, protecting roof shingles and removing moisture. The Window Geeks will complete a full roof inspection at no cost to determine ventilation functionality. 

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