Elevate recommends cold weather application procedures be used when ambient and substrate conditions fall below 40 °F (4 °C). Refer to applicable Technical Information Sheets (TIS) for specific storage, handling, and application recommendations.
ADHESIVOS, SELLADORES, IMPRIMADORES Y RECUBRIMIENTOS
ALMACENAMIENTO
- Store all adhesives, sealants, and primers between 60 °F (16 °C) and 80 °F (27 °C) until just prior to application to ensure proper mixing and dispensing of the products, and to promote appropriate application rates.
- If the properties and application characteristics of the materials begin to change during cold weather application, restore them to room temperature before continuing. Materials stored below 60 °F (16 °C) must be brought to room temperature, thoroughly mixed, and examined to verify proper consistency (no marbling or separation of components) prior to application. NOTA: Nunca mezcle el adhesivo de unión sin solventes EPDM.
MIXING & DISPENSING
Cuando los materiales líquidos están fríos, su viscosidad aumenta, lo que puede hacer que los solventes y sólidos se separen. Esta separación puede dificultar la mezcla y el dispensado. Para minimizar la posibilidad de que los materiales se enfríen en el techo antes de la aplicación, siga estas pautas adicionales:
- Solo lleve los materiales del almacenamiento en caliente al techo de 1 a 4 horas antes de la aplicación, o según sea necesario para garantizar que los materiales estén cerca de 60 °F (16 °C) cuando se dispensen.
- Siempre mezcle bien los adhesivos, imprimadores y recubrimientos hasta lograr un estado suave y uniforme antes y durante el uso. Siga las instrucciones de mezclado proporcionadas con cada producto. No utilice equipos de mezclado que puedan generar una chispa, lo que podría encender material inflamable.
- En condiciones extremas, puede ser necesario durante la aplicación rotar el material entre una caja caliente o un área de almacenamiento caliente y el techo para mantener la temperatura de aplicación adecuada.
APLICACIÓN
- Drying times depend on ambient conditions. Cool and overcast conditions lengthen open times (“tack times”), while sunny and dry conditions shorten open times. Expect and plan for longer open times in cold weather prior to adhering insulation or membrane.
- Follow all local air quality management requirements when installing products containing Volatile Organic Compounds (VOCs).
SOLVENT EVAPORATION RATES
The table below shows various flash-off times associated with solvent components of Elevate adhesives, sealants, and primers. Products may contain one or more of the solvents listed below. Because the ratios of solvents in each product vary, a definitive flash-off time for each product cannot be assigned. Reference the specific product’s Safety Data Sheet (SDS) for chemical components and compare that information to the table below for an indication of relative flash-off efficiency. Ambient conditions will affect flash-off times, but the effects are proportional.
Solvente | Exención de VOC | Tasa de evaporación* | Intermitencia relativa |
---|---|---|---|
Agua | Exento de VOC | 0.3 | Extremadamente lento |
PCBTF | Exento de VOC | 0.9 | Lenta |
Nafta | No exento de COV | 1.4 | Mediano |
Tolueno | No exento de COV | 2.2 | Mediano |
TBAC | VOC Exempt (except for applicable CA Air Quality Districts) | 2.8 | Mediano |
Acetona | Exento de VOC | 5.6 | Rápido |
Hexano | No exento de COV | 8.3 | Extremadamente rápido |
*La referencia estándar para la tasa de evaporación es acetato de n-butilo con una tasa de evaporación de 1.0.
“RUBOR” ADHESIVO (CONDENSACIÓN)
- El rubor se produce cuando el enfriamiento por evaporación del material durante el tiempo de secado disminuye la temperatura de la superficie en el punto de rocío o por debajo de este, lo que provoca condensación en las películas adhesivas y de imprimación. Esta condensación evita la adhesión adecuada. Suspenda la aplicación inmediatamente si se produce rubor.
- El uso de adhesivos e imprimadores debe monitorearse atentamente para detectar rubor cuando la temperatura ambiente está cerca del punto de rocío. La diferencia entre la temperatura ambiente y el punto de rocío suele ser menor a primera hora de la mañana y a última hora de la tarde, por lo que el mediodía suele ser el mejor momento para usar adhesivos y recubrimientos cuando se aplican productos Elevate en condiciones de clima frío. Una mayor exposición a la luz solar en cualquier momento del día disminuye el riesgo de decoloración.
ADHESIVO DE UNIÓN SIN SOLVENTE EPDM (SFBA)
- Almacene los recipientes de SFBA a temperaturas entre 60 °F y 80 °F (16 °C y 27 °C) hasta que estén listos para usar. NO permita que el producto se congele.
- Only use SFBA when ambient and substrate temperatures exceed 40 °F (4 °C). If SFBA is exposed to temperatures below 40 °F (4 °C), restore it to room temperature before use. Do not use when temperatures are expected to fall below freezing within 12 hours after application.
- No mezcle ni agite el SFBA antesde la instalación. Retire cualquier capa de piel que pueda desarrollarse en el recipiente para exponer el adhesivo nuevo para su aplicación.
- Realice pruebas de “empuje táctil” en áreas con la aplicación más pesada de SFBA y use la presión adecuada para verificar que se haya producido suficiente tiempo de apertura para iniciar el curado del adhesivo. En comparación con el adhesivo de unión EPDM estándar, el SFBA debe ser ligeramente más fácil de presionar con el dedo cuando esté listo para unirse a la membrana.
- Although SFBA does not contain solvents, the adhesive must achieve its optimal open time to set up prior to bonding to the roofing membrane. See chart below for the approximate open times for SFBA when the ambient relative humidity and temperature are known.
I. S. O. STICK™ INSULATION ADHESIVE (WINTER GRADE)
- Consider using I. S. O. Stick Insulation Adhesive Winter Grade in lieu of other insulation adhesives during cold weather if the project specification permits. The Winter Grade formula may be used when ambient and substrate temperatures range from 25 °F to 65 °F (-3 °C to 18 °C).
- Store I. S. O. Stick Winter Grade between 60 °F to 80 °F (16 °C to 27 °C) until just prior to use. See TIS 837 for full storage and handling requirements.
- The consistencies of adhesives and sealants thicken as temperatures drop. To minimize this consequence:
- Complete test areas to determine whether conditions will cause problems such as condensation with the application of the materials.
- Discontinue application when material becomes too thick to apply properly.
- If using Elevate PVC Water Based Bonding Adhesive, ambient and substrate temperatures must be at least 50 °F (10 °C) and rising during application and remain at this temperature for 48 hours after. Expect longer drying times during lower temperatures or higher humidity.
- Jet Bond PVC Spray Adhesive may be used at 35 °F (1.6 °C) and rising. NOTE : Jet Bond PVC Spray Adhesive may be used with Elevate PVC (non-fleece) membranes ONLY.
BARRERAS Y CONTRAPISOS
VAPOR BARRIERS
- V-Force™ Vapor Barrier Membrane may be applied when substrate and ambient temperatures are 25 °F (-4 °C) or higher provided the V-Force has been stored between 50 °F and 100 °F (10 °C and 38 °C) prior to application.
- Refer to the intended primer’s TIS for storage and application instructions, and limitations, if applicable.ULTRAPLY™ TPO and FIRESTONE PVC INSTALLATION
UNDERLAYMENTS
- Los contrapisos deben almacenarse fuera del clima en un área limpia y seca en el empaque original sin abrir.
- CLAD-GARD™ R has a minimum temperature of 40 °F (4 °C) at the time of application.
- CLAD-GARD SA has a minimum temperature of 40 °F (4 °C) or 50 °F (10 °C) at the time of application, depending on region (North or South).
APPLICATION OF ROOFING MEMBRANES AND FLASHINGS
MEMBRANE PREPARATION
- Almacene las membranas del techo en un lugar limpio y seco, lejos de la luz solar directa y de fuentes de perforaciones u otros daños físicos.
- Prior to installation, unroll membranes and allow them to relax for 30 to 60 minutes.
- Folded membrane panels become more difficult to relax and install in cold weather, especially with adhered systems. The use of no-fold panels in cold weather is highly recommended.
ULTRAPLY™ TPO, ELEVATE PVC and ELEVATE PVC KEE INSTALLATION
- Thermoplastic membranes become more rigid in cold temperatures. To help membranes relax, early on the day of installation, remove the outer wrapping and leave the roll in the sunlight as long as possible. This will enable the darker bottom ply of the membrane to absorb as much heat as possible and increase the membrane’s flexibility.
- To ensure seams are properly welded, it is critical that test welds are completed:
- At daily start-up
- When ambient conditions change
- When welding stops for a significant period of time (e.g., lunch breaks)
- Al utilizar una soldadora manual, las soldaduras de prueba deben realizarse en la membrana de desecho o en el material de tapajuntas sin soporte para garantizar que el operador esté utilizando la técnica y el ajuste de temperatura adecuados.
ADHESIVO EN AEROSOL JET BOND
- Jet Bond Spray Adhesive should be stored to maintain the desired product temperature of 70 °F (21 °C).
- Apply only when substrate and ambient temperatures are 25 °F (-4 °C) and rising.
- Do not apply when wind speeds are 15 mph or higher.
I.S.O. TWIN PACK™ and I.S.O. SPRAY™ R
- I.S.O. Twin Pack and I.S.O. Spray R should be stored to maintain the desired product temperature between 60 °F (16 °C) and 80 °F (27 °C).
- Apply I.S.O. Twin Pack only when substrate and ambient temperatures are 20 °F (-7 °C) and rising.
- Apply I.S.O. SPRAY R only when substrate and ambient temperatures are 25 °F (-4 °C) and rising.
- Do not attempt application during unfavorable conditions.
RUBBERGARD™ EPDM SA and ULTRAPLY TPO SA INSTALLATION
- Store EPDM SA and TPO SA in a clean, dry location, and keep dry prior to installation.
- EPDM SA and TPO SA may be installed when ambient and substrate temperatures exceed 20 °F (-7 °C).
- Always observe cold weather guidelines when applying primers.
INVISIWELD™ APPLICATIONS (ULTRAPLY TPO, ELEVATE PVC, and ELEVATE PVC KEE)
- La temperatura de aplicación mínima segura para la soldadura por inducción de las membranas termoplásticas Elevate a platos InvisiWeld o InvisiWeld-S es de 0 °F (-18 °C).
- Before induction welding with the appropriate tool, ensure there is no moisture or condensation present on the top surface of the plate or on the bottom surface of the roofing membrane. Moisture will affect the ability of the induction tool to weld and may result in partial or incomplete welds.
- Siempre siga las pautas del fabricante de la herramienta de inducción para la calibración y el uso de la herramienta en temperaturas frías. En general, la herramienta debe calibrarse regularmente, en tiempo real, EN EL LUGAR, utilizando materiales (membrana y placas) en las mismas condiciones de temperatura que los materiales del lugar de trabajo.
EPDM FLASHING INSTALLATION
- Uncured EPDM flashing products (both standard and RubberGard EcoWhite™ EPDM) are designed to be formable, but cold weather may require supplemental warming with a heat gun.
- Las condiciones ambientales (luz solar, viento y temperatura) y el color del tapajuntas determinarán la necesidad de calor suplementario. Por lo general, las temperaturas inferiores a 60 °F (16 °C) pueden requerir el uso de calor adicional para garantizar la formabilidad de los productos de tapajuntas sin curar.
- Keep heat guns and other potential ignition sources away from cleaners, primers, adhesives, or other flammable materials.
CEMENTO DE ADHESIVO FRÍO Y BRILLANTE DE MÚLTIPLES PUOSOS MB
- Store Multi-Purpose MB Cold Adhesive and Multi-Purpose MB Flashing Cement between 60 °F to 80 °F (16 °C and 27 °C) in their original, unopened containers.
- El adhesivo frío Multi-Purpose MB se aplica mejor en climas fríos mediante el uso de una plataforma de pulverización calentada. No se recomienda el adhesivo frío aplicado con escurridor en climas fríos. Las temperaturas ambiente y del sustrato deben ser 40 de °F (4 °C) y aumentar en el momento de la aplicación.
- El cemento para vierteaguas Elevate Multi-Purpose MB solo debe usarse cuando las temperaturas ambiente y del sustrato son superiores a 40 °F (4 °C) y van en aumento.
SBS, APP, and BUR INSTALLATION
- Store SBS and APP modified bitumen rolls and BUR ply felts between 50 °F and 100 °F (10 °C and 38 °C) and install when ambient and substrate temperatures are 40 °F (4 °C) and rising. Attempting to install asphalt-based products below 40 °F (4 °C) can reduce adhesion, resulting in delaminating or blistering during subsequent heating cycles.
- Materials must be used within 4 hours of removal from a heated storage area. Materials that are not used within 4 hours must be returned to a heated storage area until they return to a temperature between 50 °F to 100 °F (10 °C and 38 °C), which typically takes 24 hours.
- Asfalto caliente
- Cold substrates can rapidly cool mopped asphalt. Asphalt cools and thickens more quickly at low temperatures, which may cause application rates to be less uniform.
- All handling equipment should be insulated to minimize drops in asphalt temperature prior to application.
- Asphalt temperature shall be within the published equiviscous temperature (EVT) but not less than 420 °F (216 °C) and must be maintained at the point of application of the roofing membrane).
- Mop lead should be no more than five (5) feet (1.5 m) from the roll.
- Roll cap sheets into hot asphalt using positive pressure, ensuring proper side and end lap width.
- Stop the operation and/or change to another container when asphalt temperature at the point of application cannot be maintained within the published EVT.
- Never overheat asphalt to compensate for cold weather conditions and never heat asphalt above its EVT or its flash point. Always remain within the asphalt manufacturer’s approved application range, but never below 420 °F (216 °C).
- Always follow OSHA and NRCA safety regulations.
AC FAST FR PMMA LIQUID-APPLIED MEMBRANE & FLASHING
- Elevate AC Fast FR PMMA should be stored between 50 °F to 80 °F (10 °C to 27 °C) in a controlled environment to facilitate mixing and fleece saturation. For best use, 24 hours before application, the material is to be acclimated at temperatures between 65 °F – 70 °F (18 °C – 21 °C). NO almacene los materiales al aire libre en clima frío, ya que los materiales enfriados serán difíciles de mezclar y aplicar debido a su consistencia espesa.
- Do not attempt to mix or apply unless ambient and substrate temperatures are at least 35 °F (2 °C) and rising, and materials have been properly stored until just prior to use. The required quantity of AC Catalyst Powder and cure times are dependent upon the ambient temperature. Follow mixing instructions closely.
For additional information or assistance, please contact Elevate Technical Services on 800-428-4511, or visit our website: www.holcimelevate.com.