Wind Resistant Roof Design

In general square hexagonal and octagonal floor plans perform the best.

Wind resistant roof design. Hip roofs four sided roof design are more aerodynamic and inherently more resistant to uplift forces of high wind than gable end and other roof designs. If your home has a gable roof two sided pitched roof the end wall takes a beating during a hurricane and typical framing methods create a vulnerable hinge line at the joint between levels. Optimum roof pitch 612 for wind deflection and reduced lift. For roof sheathing installation consider 8d nails spaced at no more than 6 inches on center.

One of the most important requirements for metal roof installation is ensuring that a roof stays in place when the wind blows. The ideal slope is moderately pitched below 612 and greater than 412. High pitched gable roofs with wide overhangs are more susceptible to wind uplift whereas aerodynamic four sided hip roofs are more resistant to damage. An intelligent floor plan can reduce the wind load on the roofing system of your home making it less likely to fail.

Posted on january 19 2016 by jason allen. Make sure that they meet the standards for wind resistance astm d 3161 enhanced or ul 2390 and impact resistance. Ring shank nails improve wind resistance for a small cost. Wind loads are calculated.

To see more images of some of our homes after hurricanes visit our galleries. Gable end walls braced. Your homes floor plan is the first thing to consider. Wind resistance is most commonly determined by a physical test.

Select appropriate wind and impact resistant roof coverings and install per the manufacturers instructions. The nailing method used to install the shingles the quality and strength of the fasteners and the installation temperature can also play a role in the roofs ability to resist wind. A requirement of the code is that wind uplift design review is completed and certified for all roofing projects new and remedial in this region. Start with good structural design.

A hip roof performs better than any other roof structure when faced with enduring high winds. Wind cant build up enough pressure on any. The main design feature that we identified was the hip roof design which unlike a gable roof has all sides slope downwards to the wall at a fairly gentle slope. The design of the cyclonic home includes simple systems to reduce the local wind stresses at the roofs lower edges such as a notched frieze or a horizontal grid to be installed at the level of the.

Rated wind and impact resistant asphalt shingles and standing seam metal roofs are good choices for storm resistance. The required construction permits are not provided without these certifications. These floor plans increase wind resistance. The core concept is that the roofs wind resistance needs to be greater than the wind loads acting on a buildings roof.