BASC Search | Building America Solution Center

Right – The ridge flashing is secured with two rows of fasteners on each side of the ridge line

Right – The ridge flashing is secured with two rows of fasteners on each side of the ridge line

Image

Wrong – The ridge flashing fasteners were placed too far apart and did not adequately hold the flashing in place

Wrong – The ridge flashing fasteners were placed too far apart and did not adequately hold the flashing in place

Image

Wrong – The clips holding these metal roofing panels were set too far from the roof eave (above red line) and the panels lifted in strong winds

Wrong – The clips holding these metal roofing panels were set too far from the roof eave (above red line) and the panels lifted in strong winds

Image

Opening Protection Systems - Doors, Windows, Garages

Video

Video showing proper attic ventilation systems for hurricane-prone regions compliant with IBHS Fortified Home standards.

Inside FORTIFIED: Sealing Roof Seams with Two Layers of Felt

Video

Video showing how to install felt underlayment in hurricane areas, per IBHS Fortified requirements.

Continuous Load Path Provided with Connections from the Roof through the Wall to the Foundation

Guide

Guide describing how to provide a strong continuous load path from the roof through the wall to the foundation to ensure a structurally sound building and increase racking resistance in hurricanes, high winds, tornados, and earthquakes.

Lateral Bracing in Gable End Walls

Guide

Guide describing how to brace gable end walls to resist wind pressures.

Gutter channel

Image

Right – Seams in the deck sheathing are sealed with tape

Right – Seams in the deck sheathing are sealed with tape

Image

During high wind events, high localized areas of negative pressure (“suction”) occur above roof membranes

During high wind events, high localized areas of negative pressure (“suction”) occur above roof membranes

Image

Ceiling joists extend out to provide very strong roof overhangs that will resist uplift pressures in high winds.

Ceiling joists extend out to provide very strong roof overhangs that will resist uplift pressures in high winds.

Image

Wrong - Roof deck sheathing nails missed the trusses, potentially weakening the roof in high winds.

Wrong - Roof deck sheathing nails missed the trusses, potentially weakening the roof in high winds.

Image

Wrong – Roof underlayment is not fully adhered and roof deck seams are not sealed so roof is susceptible to high-wind events

Image

: Right – Roof underlayment is fully adhered and roof deck seams are sealed so roof is resistant to high-wind events

Right – Roof underlayment is fully adhered and roof deck seams are sealed so roof is resistant to high-wind events

Image

Right – Roof underlayment is fully adhered and roof deck seams are sealed so roof is resistant to high-wind events

Right – Roof underlayment is fully adhered and roof deck seams are sealed so roof is resistant to high-wind events

Image

Low-slope roof assemblies constructed of two deck sheathing layers sandwiching rigid foam, and topped with mechanically fastened membrane

Image

Right – This low-slope roof and parapet assembly has continuity of both the air and water barriers

Right – This low-slope roof and parapet assembly has continuity of both the air and water barriers

Image

Garage Doors are Pressure Rated

Guide

Guide describing garage doors that are pressure-rated to withstand wind pressures from hurricanes, high winds, and tornados.

During high wind events, vortices form along the edges of the roof creating areas of localized negative pressure (“suction”) above the roof

During high wind events, vortices form along the edges of the roof creating areas of localized negative pressure (“suction”) above the roof

Image

Right – The roof membrane is fully adhered and deck seams are sealed so the membrane will not flutter and fail due to negative pressure from high winds

Image

Kickout diverter flashing keeps bulk water from the roof from overflowing the gutter and continuously wetting the siding material.

Kickout diverter flashing keeps bulk water from the roof from overflowing the gutter and continuously wetting the siding material.

Image

Right – Closed-cell polyurethane foam is sprayed on the underside of the roof deck to provide structural connections and seal seams in the sheathing to increase wind resistance

Right – Closed-cell polyurethane foam is sprayed on the underside of the roof deck to provide structural connections and seal seams in the sheathing to increase wind resistance

Image

Wrong – If roof membrane is not fully adhered, it can flutter and fail due to negative pressure from wind above and positive pressure from air leakage through roof deck below

Image

Framing of Gable Roof Overhangs

Guide

Guide describing construction of gable roof overhangs to resist uplift pressures in high winds.

Hillside House Green Roof

Video

Video discussing the components of a green roof.

Wrong - Ladder framing method for a gable overhang offers low resistance to wind uplift.

Image

Right - Metal drip edge on this south Florida CMU home protects the top of the fascia and edge of the roof deck from water, wind-blown rain and embers, and insects.

Right - Metal drip edge on this south Florida CMU home protects the top of the fascia and edge of the roof deck from water, wind-blown rain and embers, and insects.

Image

Right - Installation steps for the L-bent strap method of bracing a gable end wall

Right - Installation steps for the L-bent strap method of bracing a gable end wall

Image

Project: Roofing in High Wind Zones

Video

Video presentation describing steps to properly install roofs and shingles in high wind zones.

Roof Deck Sheathing and Sealing for Sloped Roofs

Guide

Guide describing requirements for sealing roof sheathing to increase resistance to high winds and rain.

First
Previous
…
3
4
5
…
Next
Last