Calculadora de ventilación

Cómo hacer el cálculo

Paso 1: medir

Mide el largo y ancho del espacio de piso en el ático a ventilar.

Paso 2: calcular

Ingresa el largo y ancho o el total de pies cuadrados del espacio de piso en el ático a ventilar.
Check Mark in Badge Icon

Paso 3: identificar

Consulta las cantidades recomendadas para cada producto de ventilación GAF (normalmente redondeadas hacia arriba).

Comencemos

Usa esta calculadora como ayuda para determinar la cantidad adecuada de ventilación en el ático, según las normas 1/300 de la FHA de Estados Unidos.*

Elige una dirección de la lista o no se enviará tu dirección.
Ingresa tus medidas a continuación.
Ingresa un número válido
Ingresa un número válido

O bien

Ingresa un número válido

Sugerencias para una superficie de 900 pies cuadrados

Los números que se muestran representan la cantidad total recomendada de unidades requeridas para un solo producto.
384 in² mínimas de área neta libre de escape que se necesitan en o cerca del caballete.
Y
384 in² mínimas de área neta libre de entrada que se necesitan en o cerca del sofito.

Ten en cuenta:

Algunos códigos de construcción locales exigen la regla de ventilación para ático 1/150, que incrementa el mínimo de ventilación para ático necesario. Siempre consulta los códigos de construcción locales para conocer los detalles de los requisitos de ventilación de tu área.
Nota: N/R = no recomendado

Ventilación de escape

Producto Se necesitan los pies lineales
Cobra® RidgeRunner® 31'
Rigid Vent 3™ Cobra® 22'
Cobra® SnowCountry® 22'
Cobra® SnowCountry® Advanced 22'
Ventilación de limatesa Cobra® 43'
Ventilación de caballete TruSlate® 43'

Producto

Cobra® RidgeRunner®

Se necesitan los pies lineales

31'

Producto

Rigid Vent 3™ Cobra®

Se necesitan los pies lineales

22'

Producto

Cobra® SnowCountry®

Se necesitan los pies lineales

22'

Producto

Cobra® SnowCountry® Advanced

Se necesitan los pies lineales

22'

Producto

Ventilación de limatesa Cobra®

Se necesitan los pies lineales

22'

Producto

Ventilación de caballete TruSlate®

Se necesitan los pies lineales

22'

Producto Se necesitan los pies lineales
Respiradero de escape Cobra® - Clavado manual 31'
Respiradero de escape Cobra® - Clavado con pistola 22'

Producto

Respiradero de escape Cobra® - Clavado manual

Se necesitan los pies lineales

31'

Producto

Respiradero de escape Cobra® - Clavado con pistola

Se necesitan los pies lineales

22'

Producto Se necesitan los pies lineales
AR10 31'

Producto

AR10

Se necesitan los pies lineales

31'

Producto Cantidad requerida
Cuadrado plástico RT65 - Superficie 31
Inclinación plástica IR61 - Negro 31
Uso general de metal R50/RV50 31
Inclinación plástica IR65 - Negro 31
Inclinación de metal SSB960 - Negro 31
Ventilación para domo de alta capacidad HCD144 31

Producto

Cuadrado plástico RT65 - Superficie

Cantidad requerida

31

Producto

Inclinación plástica IR61 - Negro

Cantidad requerida

31

Producto

Uso general de metal R50/RV50

Cantidad requerida

31

Producto

Inclinación plástica IR65 - Negro

Cantidad requerida

31

Producto

Inclinación de metal SSB960 - Negro

Cantidad requerida

31

Producto

Ventilación para domo de alta capacidad HCD144

Cantidad requerida

31

Ventilación de entrada

Producto Se necesitan los pies lineales
Cobra IntakePro® 31'

Producto

Cobra IntakePro®

Se necesitan los pies lineales

31'

Producto

Respiradero de imposta Cobra® (rollo de malla) 1"

Se necesitan los pies lineales

22'

Producto

Respiradero de imposta Cobra® (rollo de malla) 1.5"

Se necesitan los pies lineales

22'

Producto Cantidad requerida
Ventilaciones de sofito continuas de metal LSV8 (pies lineales) 31'
Ventilaciones plásticas de sofito EAP 4x12 31
Ventilaciones de metal de sofito EAC 16x4 31
Ventilaciones de metal de sofito EAC 16x8 31
Respiraderos de sofito con cierre EmberShield® 31

Producto

Respiraderos de sofito continuos de metal LSV8

Cantidad requerida

31

Producto

Ventilaciones plásticas de sofito EAP 4x12

Cantidad requerida

22

Producto

Ventilaciones de metal de sofito EAC 16x4

Cantidad requerida

22

Producto

Ventilaciones de metal de sofito EAC 16x8

Cantidad requerida

22

Producto

Respiraderos de sofito con cierre EmberShield®

Cantidad requerida

22

Ventilación de entrada o escape

Nota: las rejillas para techos a dos aguas normalmente se instalan en pares

Producto Cantidad requerida
DA 12x12 31
DA 12x18 31
DA 14x24 31
DA 18x24 31
DA 24x30 31

Producto

DA 12x12

Cantidad requerida

31

Producto

DA 12x18

Cantidad requerida

31

Producto

DA 14x24

Cantidad requerida

31

Producto

DA 18x24

Cantidad requerida

32

Producto

DA 24x30

Cantidad requerida

33

Producto Cantidad requerida
SL 8x8 31
SL 12x12 31
SL 12x18 31
SL 18x24 31

Producto

SL 8x8

Cantidad requerida

34

Producto

SL 12x12

Cantidad requerida

35

Producto

SL 12x18

Cantidad requerida

36

Producto

SL 14x24

Cantidad requerida

37

Producto

SL 18x24

Cantidad requerida

38

Producto Cantidad requerida
RLSC 2" 31
RLSC 3" 31
RLSC 4" 31

Producto

RLSC 2"

Cantidad requerida

39

Producto

RLSC 3"

Cantidad requerida

40

Producto

RLSC 4"

Cantidad requerida

41

Ventilación de escape

Producto Cantidad requerida
ERV4 31
ERV5 & Wi-Fi ERV5QCT 22
ERV6 22
EZ Cool™ EZCR1 22

Producto

ERV4

Cantidad requerida

31

Producto

ERV5 & Wi-Fi ERV5QCT

Cantidad requerida

22

Producto

ERV6

Cantidad requerida

31

Producto

EZ Cool™ EZCR1

Cantidad requerida

31

Producto Cantidad requerida
EGV5 & Wi-Fi EGV5QCT 31
EGV6 22
EZ Cool™ EZCG1 22

Producto

EGV5 & Wi-Fi EGV5QCT

Cantidad requerida

31

Producto

EGV6

Cantidad requerida

31

Producto

EZ Cool™ EZCG1

Cantidad requerida

31

Producto Cantidad requerida
Techo solar y con alimentación dual (ERVSOLAR / ERVHYBRID) 31
Techo a dos aguas solar (PGSOLAR) 22
Techo solar de alta potencia y con alimentación dual (PRSOLAR2 / PRHYBRID2) 22

Producto

Techo solar y con alimentación dual (ERVSOLAR / ERVHYBRID)

Cantidad requerida

31

Producto

Techo a dos aguas solar (PGSOLAR)

Cantidad requerida

31

Producto

Techo solar de alta potencia y con alimentación dual (PRSOLAR2 / PRHYBRID2)

Cantidad requerida

31

Producto Cantidad requerida
12" 31
14" 22

Producto

12"

Cantidad requerida

31

Producto

14"

Cantidad requerida

31

Ventilación de entrada

Producto Se necesitan los pies lineales
con ERV4 31'
con ERV5 y Wi-Fi ERV5QCT 22'
con ERV6 31'
con EZ Cool™ EZCR1 31'
con EGV5 & Wi-Fi EGV5QCT 22'
con EGV6 31'
con EZ Cool™ EZCG1 31'
con techo solar y con alimentación dual 22'
con techo solar a dos aguas 22'
con techo solar de alta potencia y alimentación dual 22'
con turbina de viento de 12" 22'
con turbina de viento de 14" 22'

Producto

con ERV4

Se necesitan los pies lineales

31'

Producto

con ERV5 y Wi-Fi ERV5QCT

Se necesitan los pies lineales

31'

Producto

con ERV6

Se necesitan los pies lineales

31'

Producto

con EZ Cool™ EZCR1

Se necesitan los pies lineales

31'

Producto

con EGV5 & Wi-Fi EGV5QCT

Se necesitan los pies lineales

31'

Producto

con EGV6

Se necesitan los pies lineales

31'

Producto

con EZ Cool™ EZCG1

Se necesitan los pies lineales

31'

Producto

con techo solar y con alimentación dual

Se necesitan los pies lineales

31'

Producto

con techo solar a dos aguas

Se necesitan los pies lineales

31'

Producto

con techo solar de alta potencia y alimentación dual

Se necesitan los pies lineales

31'

Producto

con turbina de viento de 12"

Se necesitan los pies lineales

31'

Producto

con turbina de viento de 14"

Se necesitan los pies lineales

31'

Producto Se necesitan los pies lineales
con ERV4 31'
con ERV5 y Wi-Fi ERV5QCT 22'
con ERV6 31'
con EZ Cool™ EZCR1 31'
con EGV5 & Wi-Fi EGV5QCT 22'
con EGV6 31'
con EZ Cool™ EZCG1 31'
con techo solar y con alimentación dual 22'
con techo solar a dos aguas 22'
con techo solar de alta potencia y alimentación dual 22'
con turbina de viento de 12" 22'
con turbina de viento de 14" 22'

Producto

con ERV4

Se necesitan los pies lineales

31'

Producto

con ERV5 y Wi-Fi ERV5QCT

Se necesitan los pies lineales

31'

Producto

con ERV6

Se necesitan los pies lineales

31'

Producto

con EZ Cool™ EZCR1

Se necesitan los pies lineales

31'

Producto

con EGV5 & Wi-Fi EGV5QCT

Se necesitan los pies lineales

31'

Producto

con EGV6

Se necesitan los pies lineales

31'

Producto

con EZ Cool™ EZCG1

Se necesitan los pies lineales

31'

Producto

con techo solar y con alimentación dual

Se necesitan los pies lineales

31'

Producto

con techo solar a dos aguas

Se necesitan los pies lineales

40'

Producto

con techo solar de alta potencia y alimentación dual

Se necesitan los pies lineales

31'

Producto

con turbina de viento de 12"

Se necesitan los pies lineales

31'

Producto

con turbina de viento de 14"

Se necesitan los pies lineales

31'

Producto Cantidad requerida
con ERV4 31
con ERV5 y Wi-Fi ERV5QCT 22
con ERV6 31
con EZ Cool™ EZCR1 31
con EGV5 & Wi-Fi EGV5QCT 22
con EGV6 31
con EZ Cool™ EZCG1 31
con techo solar y con alimentación dual 22
con techo solar a dos aguas 22
con techo solar de alta potencia y alimentación dual 22
con turbina de viento de 12" 22
con turbina de viento de 14" 22

Producto

con ERV4

Cantidad requerida

31

Producto

con ERV5 y Wi-Fi ERV5QCT

Cantidad requerida

31

Producto

con ERV6

Cantidad requerida

31

Producto

con EZ Cool™ EZCR1

Cantidad requerida

31

Producto

con EGV5 & Wi-Fi EGV5QCT

Cantidad requerida

31

Producto

con EGV6

Cantidad requerida

31

Producto

con EZ Cool™ EZCG1

Cantidad requerida

31

Producto

con techo solar y con alimentación dual

Cantidad requerida

31

Producto

con techo solar a dos aguas

Cantidad requerida

49

Producto

con techo solar de alta potencia y alimentación dual

Cantidad requerida

31

Producto

con turbina de viento de 12"

Cantidad requerida

31

Producto

con turbina de viento de 14"

Cantidad requerida

31

Producto Cantidad requerida
con ERV4 31
con ERV5 y Wi-Fi ERV5QCT 22
con ERV6 31
con EZ Cool™ EZCR1 31
con EGV5 & Wi-Fi EGV5QCT 22
con EGV6 31
con EZ Cool™ EZCG1 31
con techo solar y con alimentación dual 22
con techo solar a dos aguas 22
con techo solar de alta potencia y alimentación dual 22
con turbina de viento de 12" 22
con turbina de viento de 14" 22

Producto

con ERV4

Cantidad requerida

31

Producto

con ERV5 y Wi-Fi ERV5QCT

Cantidad requerida

31

Producto

con ERV6

Cantidad requerida

31

Producto

con EZ Cool™ EZCR1

Cantidad requerida

31

Producto

con EGV5 & Wi-Fi EGV5QCT

Cantidad requerida

31

Producto

con EGV6

Cantidad requerida

31

Producto

con EZ Cool™ EZCG1

Cantidad requerida

31

Producto

con techo solar y con alimentación dual

Cantidad requerida

31

Producto

con techo solar a dos aguas

Cantidad requerida

58

Producto

con techo solar de alta potencia y alimentación dual

Cantidad requerida

31

Producto

con turbina de viento de 12"

Cantidad requerida

31

Producto

con turbina de viento de 14"

Cantidad requerida

31

Producto Cantidad requerida
con ERV4 31
con ERV5 y Wi-Fi ERV5QCT 22
con ERV6 31
con EZ Cool™ EZCR1 31
con EGV5 & Wi-Fi EGV5QCT 22
con EGV6 31
con EZ Cool™ EZCG1 31
con techo solar y con alimentación dual 22
con techo solar a dos aguas 22
con techo solar de alta potencia y alimentación dual 22
con turbina de viento de 12" 22
con turbina de viento de 14" 22

Producto

con ERV4

Cantidad requerida

31

Producto

con ERV5 y Wi-Fi ERV5QCT

Cantidad requerida

31

con ERV6

Cantidad requerida

31

con EZ Cool™ EZCR1

Cantidad requerida

31

con EGV5 & Wi-Fi EGV5QCT

Cantidad requerida

31

con EZ Cool™ EZCG1

Cantidad requerida

31

con techo solar y con alimentación dual

Cantidad requerida

31

con techo solar a dos aguas

Cantidad requerida

67

con techo solar de alta potencia y alimentación dual

Cantidad requerida

31

con turbina de viento de 12"

Cantidad requerida

31

con turbina de viento de 14"

Cantidad requerida

31

Producto Cantidad requerida
con ERV4 31
con ERV5 y Wi-Fi ERV5QCT 22
con ERV6 31
con EZ Cool™ EZCR1 31
con EGV5 & Wi-Fi EGV5QCT 22
con EGV6 31
con EZ Cool™ EZCG1 31
con techo solar y con alimentación dual 22
con techo solar a dos aguas 22
con techo solar de alta potencia y alimentación dual 22
con turbina de viento de 12" 22
con turbina de viento de 14" 22

Producto

con ERV4

Cantidad requerida

31

Producto

con ERV5 y Wi-Fi ERV5QCT

Cantidad requerida

31

Producto

con ERV6

Cantidad requerida

31

Producto

con EZ Cool™ EZCR1

Cantidad requerida

31

Producto

con EGV5 & Wi-Fi EGV5QCT

Cantidad requerida

31

Producto

con EGV6

Cantidad requerida

31

Producto

con EZ Cool™ EZCG1

Cantidad requerida

31

Producto

con techo solar y con alimentación dual

Cantidad requerida

31

Producto

con techo solar a dos aguas

Cantidad requerida

75

Producto

con techo solar de alta potencia y alimentación dual

Cantidad requerida

31

Producto

con turbina de viento de 12"

Cantidad requerida

31

Producto

con turbina de viento de 14"

Cantidad requerida

31

Productos de respiradero y ventilación para ático

Para encontrar la solución de ventilación para ático adecuada para tu proyecto de techado, elige entre una línea completa de respiraderos para techos a cuatro aguas y de caballete, respiraderos de energía solar y eléctricos, rejillas para techo y techo a dos aguas, turbinas de viento, respiraderos de entrada y más, todo de GAF.

Master Flow Roof Louver SSB960A - Aluminum Slant-Back
Rejilla para techos Master Flow™ SSB960A - Aluminio con dorso inclinado
Ver producto
Master Flow GreenMachine High-Power Solar Roof Vent - PRSOLAR2
Respiradero de techo solar de alta potencia Master Flow™ GreenMachine™ - PRSOLAR2
Ver producto
Master Flow Power Attic Vent ERV5 - Roof Mount
Respiradero eléctrico para ático Master Flow™ ERV5 - Montaje en el techo
Ver producto
Diagram of intake and exhaust ventilation

La regla de ventilación equilibrada para ático de 1/300

Para que el ático tenga una ventilación adecuada tiene que haber un equilibrio entre entrada de aire (en o cerca de tus sofitos) y salida de aire (en o cerca del caballete del techo). Las autoridades de la Administración Federal de Vivienda de Estados Unidos recomiendan un mínimo de al menos 1 pies cuadrados de ventilación para ático (separada equitativamente entre la entrada y la salida) por cada 300 pies cuadrados de espacio de piso en el ático. Siempre se debe tener un sistema de ventilación equilibrada. En ningún caso la ventilación de escape debe exceder la ventilación de entrada.
Ver video
*Nota: La regla 1/300 es una regla general y no se aplica a todas las situaciones. Prevalecen los códigos de construcción local, cuando son más estrictos. Consulta siempre con un diseñador profesional para cielo rasos estilo catedral, plataformas base con aislante, etc.
Examples of static, power, and mechanical attic vents

Conoce las opciones de respiradero para ático

¿Estás confundido acerca de la cantidad de soluciones de ventilación para ático disponibles? ¿Tienes curiosidad acerca de porqué un techo debe llevar ventilación de caballete y otro debe incorporar respiradero eléctrico o rejilla para techos? En este video verás una excelente introducción al arte y la ciencia de elegir los componentes de ventilación para ático adecuados para tu techo.
Ver video Conocer más

Respuestas para tus principales preguntas sobre ventilación para ático

Image showing why you should use attic ventilation

Cómo ventilar un ático: cómo funciona la ventilación para ático | GAF Roofing

¿Qué es la ventilación para ático? Conoce cómo se ventilan los áticos.
How to Select Products for Your Attic Ventilation System

Cómo seleccionar productos para tu sistema de ventilación para ático | GAF Roofing

Determina qué productos de ventilación son mejores para tu proyecto de techado.
video for how to plan a balanced attic ventilation system

Cómo planificar un sistema equilibrado de ventilación para ático | GAF Roofing Materials

En este video, aprenderás cómo calcular un sistema equilibrado de ventilación para ático.
Home with ventilation arrows

Cómo evitar los errores más comunes de instalación de ventilación para ático | GAF Roofing

Al planificar e instalar un sistema equilibrado de ventilación para ático, es importante comprender estos errores comunes que pueden reducir la efectividad del sistema y evitarlos.

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GAF Timberline HDZ® Reflector Series Shingles come in rich, vibrant colors, giving homeowners attractive color options that can be used to comply with the Cool Roof Requirements of Title 24 and the LA County Green Building Standards Code.*Here's why you may want to add these shingles to your business offerings, especially if you work in California.Timberline HDZ® RS ShinglesA few features make these shingles stand out.Meeting California Code ComplianceIn California, residential roofs must meet solar reflectance requirements because they are mandated by California's Building Energy Efficiency Standards Title 24, Part 6 and Los Angeles County Green Building Code. Both codes set a minimum reflectance rating known as the solar reflective index (SRI), which measures a material's ability to reflect sunlight and heat. The lower the SRI value (from 0 to 100), the hotter a material becomes in sunlight. The higher the value, the cooler the material. Shingles with a higher SRI help reduce temperatures by reflecting sunlight which can help reduce the cooling load.The new Timberline HDZ® RS Shingles provide solar reflectance that complies with both Title 24 and the Los Angeles County Green Building Code.Title 24California's Title 24 covers the entire state, unless local requirements are stricter, providing cool roof requirements for residential and commercial buildings based on their locations within 16 climate zones. For residential buildings (new construction), climate zones 1 through 9 and 16 have no cool roof requirements. Climate zones 4, and 8 through 15 require cool roofs for new and reroof applications when more than 50% of the roof is removed.If shingles don't meet the required SRI, alternative paths to compliance include using a radiant barrier, airspace, or additional attic insulation.Los Angeles County Green Building CodeThe Los Angeles County Green Building Code's Cool Roof Ordinance covers buildings in the county and prescribes SRI values depending on the type of building (low-rise residential, high-rise residential and hotels/motels, and nonresidential) and roof slope. High-slope (more than 2:12), low-rise residential roofs must have an SRI of 20 or more. Exceptions apply to roof repairs or replacements where less than 50% of the roof is removed, additions of less than 500 square feet or less than 50% of the total roof area, and green roofs.Selling Points for California HomeownersWhen working with property owners in California and Los Angeles County, you can highlight the following selling points of Timberline HDZ® Reflector Series Shingles.Potential Savings on Cooling CostsReflective roofing may help decrease a roof's temperature and cooling load, which has the potential to lower cooling costs.****StyleTimberline HDZ® RS Shingles provide the darkest highly-reflective shingle available, Charcoal, thanks to EcoDark® granules. They also feature GAF's High Definition® color blends for dimensional, wood-shake look.Peace of MindHomeowners can enjoy heightened confidence when choosing Timberline HDZ® RS Shingles because they come with a Lifetime Limited Warranty***** against manufacturing defects and a 25-year StainGuard Plus™ Algae Protection limited warranty.**Enhancing Homes' AppealHomeowners can rest assured that the new Timberline HDZ® Reflector Series Shingles offer the durability of GAF shingles while providing deep, rich color options to match their unique aesthetic.Color OptionsTimberline HDZ® RS shingles feature newly formulated EcoDark® Granules that provide deep rich, dark colors including Charcoal, the darkest highly-reflective shingle color in California, as well as other popular shingle colors that offer color blends for a more dimensional look.Time-Release Algae Fighting TechnologyTimberline HDZ® RS shingles feature GAF Time-Release Algae-Fighting Technology which uses specially engineered capsules that are infused with thousands of copper microsites. This allows the copper to release steadily over time for long-lasting algae fighting power. It's technology so strong, it powers the 25-Year StainGuard Plus™ Algae Protection Limited Warranty.**WindProven Limited Wind WarrantyTimberline HDZ® RS shingles have LayerLock® technology and the StrikeZone™, nailing area like traditional Timberline HDZ® shingles, and are eligible for the WindProven™ Limited Wind Warranty with no maximum wind speed limitation when installed with the required combination of accessories.***Curious to learn more? Visit the GAF Timberline HDZ® RS Shingles product page for more details.*Can be used to comply with the Cool Roof Requirements for steep slope residential buildings of 2022 Title 24, Part 6, of the California Code of Regulations and the Green Building Standards Code of Los Angeles County.**25-year StainGuard Plus Algae Protection Limited Warranty against blue-green algae discoloration is available only on products sold in packages bearing the StainGuard Plus logo. See GAF Shingle and Accessory Limited Warranty for complete coverage and restrictions.***15-year WindProven™ limited wind warranty covers GAF Shingles with LayerLock® Technology only and requires the use of GAF Starter Strips, Roof Deck Protection, Ridge Cap Shingles, and Leak Barrier or Attic Ventilation. See GAF Roofing System Limited Warranty for complete coverage and restrictions. Visit gaf.com/LRS for qualifying GAF products. For installations not eligible for the WindProven limited wind warranty, see GAF Shingle & Accessory Limited Warranty for complete coverage and restrictions.****Energy cost savings are not guaranteed and the amount of savings may vary based on a variety of factors, such as climate zone, utility rates, radiative properties of roofing products, insulation levels and HVAC equipment efficiency.*****Definition of Lifetime: The word "Lifetime" means as long as you, the original owner(s) [or the second owner(s) if coverage was properly transferred during the Smart Choice Protection Period], own the property where the shingles and/or accessories are installed. The Lifetime warranty is applicable only to shingles and accessories installed on a single-family detached residence owned by individuals. For any other type of owner or building, such as a corporation, governmental entity, religious entity, condominium or homeowner association, school, apartment building, office building, or multi-use structure, the length of the warranty is 40 years. See the GAF Shingle & Accessory Limited Warranty, GAF Roofing System Limited Warranty and GAF Golden Pledge Limited Warranty for complete coverage and restrictions.

By Authors Dawn Killough

September 06, 2024

A roofer installs GAF's Cobra SnowCountry Advanced Premium Exhaust Vent on a Roof Ridge
Residential Roofing

The Role of Roofing Codes and Standards in Roof Venting Product Development

When developing a new roofing product, it's important to ensure it meets the local roofing codes and requirements in multiple jurisdictions. These standards are often regionally similar, but some may require additional testing or the use of certain raw materials. The product development team at GAF works hard to ensure products meet some of the strictest codes, so they can provide years of protection no matter where they're installed.Jeremiah Hershberger, GAF product manager of residential accessories, recently discussed the role codes and standards play in residential roofing product development, specifically concerning roof vent code requirements.Why Are Product Codes and Standards Important?The main purpose of building codes and standards is to maintain public health, safety, and welfare in all structures. They do this by ensuring that buildings are constructed in such a way as to minimize potential hazards, like fire, structural failure, or storm damage.Building codes exist to improve the safety and livability of buildings. They set minimum requirements for the materials and systems installed, as well as their installation methods. In the US, building codes are upheld and enforced by state, county, and city governments through the permitting and inspection processes.Standards also provide minimum design and performance metrics for products and systems. However, unlike local building codes, they are often universally upheld (nationally or worldwide). Organizations like ASTM International and the National Fire Protection Association are responsible for creating, updating, and communicating these standards. Local building codes often use these standards to set minimums for product and installation quality.How Do Roofing Codes and Standards Affect Product Development?"The goal of product development at GAF is to provide enhanced value for our customers and contractors," Hershberger explains. Ultimately, customers need to be confident in the performance of GAF products and building codes and standards provide a minimum threshold for product performance. Accordingly, they must be taken into consideration when designing products.Codes are prescriptive performance requirements for buildings. They include both the materials used to construct the building and how they're installed. All products used in a particular building must meet the local code requirements for that county or city.Standards are used as bases of comparison. Types of standards include:Testing standards that define methods and minimum acceptable resultsRating standards that provide a way to fairly compare productsDesign standards that set the criteria for specific roof system designsWhen products are developed for use in many geographic areas, they must meet several locations' requirements. For instance, when developing a new off-ridge ventilation product, GAF considers not only how much net free area (NFA) the unit will have, but also the performance characteristics required to meet Florida Building Code, Texas Department of Insurance (TDI), and Miami-Dade standards so the product can be used in areas that adhere to those codes.Why Does GAF Pay Attention to Codes and Requirements?"We want our customers to be confident in the performance of our products not based solely on our word but also on the basis of third-party standards that level set the industry," notes Hershberger. "Codes and testing requirements provide customers with that outside assurance that our products will hold up to the environmental rigors of a specific region or location."For example, TAS-100(A) tests a product's performance in wind-driven rain. The test provides information on how well a ventilation product will perform in such an environment and helps the product development team learn how likely it is that a ventilation product might leak, so we can then mitigate that risk.How Do Codes Affect Product Quality?Codes may specify what raw materials can be used to make a product or how it will perform in certain standardized tests. For instance, ASTM E108 or ANSI/UL790 Class A roofing fire ratings require a high degree of fire protection to the roof deck, which directly affect the materials used to produce these products. Similarly, the UL 2218 Class 4 impact test or the ASTM E330 Uplift Pressure Test show how a product performs under naturally occurring forces (e.g., hail or wind)"GAF strives to find the balance between performance, strength, and ease of installation (or handleability)," Hershberger says. "This often leads us to develop products that use higher grade materials (better performance over time), are simpler to manufacture with fewer points of potential failure, and are easier to install correctly (ensuring repeatability)."How Codes Affect the Development of High-Quality Roof VentsCreating high-quality roof vents and rooftop accessories didn't occur by accident. The GAF development team focuses on roofing codes and requirements through an intentional design process to drive innovation. From product ideation to design, development, and launch, the team ensures products meet or exceed several codes and standards, including:Florida Building CodeSets minimum performance standards for roof construction, such as wind resistance, fire performance, and roof ventilation requirements. Products must be approved by the state before being installed.Miami-Dade CountyThis county in Florida has some of the strictest building codes in the country due to its classification as a High-Velocity Hurricane Zone. Products used there must also be approved by the county as meeting not only Florida Building Code, but the stricter county requirements.Texas Department of Insurance (TDI)Regulates insurance companies and the insurance/claims process in the state of Texas. Roofing products are evaluated based on TDI-adopted building specifications regarding products used and installation methods.Other tests performed to ensure product performance include:TAS-100(A). Determines the water infiltration resistance of a ridge area ventilation system (ridge vents, static vents, turbines, or powered vents).Simulated snow/ice dam. Ice dams can form when a roof is not properly ventilated, leading to snow melting and refreezing along the lower edge of the roof.UL2218 Class 4 impact test. The UL2218 test is a steel ball drop test that evaluates the impact resistance of roof coverings. Class 4 products are shown to withstand the 20-ft drop of a 2-inch diameter steel ball without cracking through significant damage.Ensuring Roofing Products Are Up to the TaskThe product team at GAF routinely performs these tests to ensure roofing materials meet local roofing code requirements. The company then makes the results publicly available, helping customers nationwide rest assured that they can rely on GAF roofing products to perform as expected.For more information on the GAF ventilation products that meet or exceed code requirements, explore the ridge and off-ridge ventilation offerings.

By Authors Dawn Killough

August 15, 2024