LIQUISEAL Liquid Flashing - It's All in the Preparation
February 19, 2019
From irregularly-shaped and hard to flash penetrations – to creating tie-ins without impeding the flow of water – liquid flashing can solve a lot of problems on the roof. However, it can also be difficult to apply if not done correctly.

Here are some simple tips and guidelines to utilize when working with LIQUISEAL® Liquid Flashing:
  • LIQUISEAL Liquid Flashing is an incredibly durable product but it won't adhere properly if surfaces aren't prepared. Always use the tables on LF-A, B, & C to determine what preparation is needed for a given substrate. Here are some examples for common surfaces:
    • Metal: Grind clean to expose bare steel or aluminum and create a rough surface before priming. Do not use a wire brush. Then apply LIQUISEAL Liquid Flashing Metal Primer and allow the primer to cure fully (this may take several hours).
    • EPDM: Scuff the membrane using 60 grit sandpaper and clean with Weathered Membrane Cleaner. After this is complete, apply LIQUISEAL Liquid Flashing Metal Primer and allow the primer to cure fully (this may take several hours).
    • TPO: Clean TPO with Weathered Membrane Cleaner - do not scuff with sandpaper as with other membranes - and apply Carlisle SynTec's TPO Primer and allow to flash off.
    • PVC & KEE: Scuff the membrane surface using 60 grit sandpaper and clean with PVC cleaner. No primer is needed prior to application on PVC or KEE membranes.
  • Always pre-cut and dry-fit your reinforcing fleece before mixing the resin. LIQUISEAL Liquid Flashing Resin has a "pot-life" of about 20-30 minutes once mixed, so prioritizing time is key.
  • Take the time to watch this flashing video or this tie-in video, review the installation instructions on the Carlisle SynTec website, and review details before using LIQUISEAL Liquid Flashing. A little bit of time spent reviewing these up front can save applicators considerable time on the roof, and prevent the potential waste of product.

For more information about liquid flashing, please contact Adam Burzynski.



    Adam Burzynski
    TPO Product Manager
    Product Marketing
    [email protected]
February 25, 2020
Dual Tanks Cold Weather Application Tips

Proper material temperatures are imperative to ensure that adhesive products deliver the highest level of performance. When applying adhesive products below the manufacturer’s recommended application temperatures, application speed and performance can be drastically affected. To help address material temperature issues, Carlisle has recently announced the availability of heated blankets and temperature sensing nozzle technology. Flexible FAST reaches its maximum performance when the material temperature at the time of installation is 70°F or rising. When temperatures fall below 70°F, urethane adhesives can experience mixture ratio issues that could create application issues. To help address material temperatures during winter applications, the use of hot boxes and power blankets are recommended to ensure the adhesive remains at 70°F or above at the time of application. For more information regarding heated blankets, click here or visit the website for one of Carlisle equipment partners: PowerBlanket 4C's Spray Equipment Panther East In addition to heated blankets, Carlisle has also made advancements to delivery systems to help applicators identify when an adhesive product is too cold. In January 2020, Carlisle introduced Temperature Warning Tips for Flexible FAST Dual Tanks. These tips make it easy to apply polyurethane adhesives properly. Carlisle’s Temperature Warning Tips provide the applicator with a visual cue to easily identify if the material is too cold during application: Nozzle turns BLUE when adhesive temperature is below the required 70°F. Nozzle will be CLEAR when adhesive is spraying at optimal temperature. Compression seal added to create a tighter fit between the gun and tip. This helps eliminate adhesive leaks. For more information, please contact your manufacturer's representative.

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February 11, 2020
Code-Required Minimum R-Values

Over the past 10 years, there has been a shift in minimum required R-values. The 2015 International Energy Conservation Code (IECC) is the driving force behind this movement. More than 20 states have adopted the 2015 IECC, or a portion of its provisions, as their statewide energy code. See the chart below for minimum R-values per climate zone. Since 2009, the roofing industry has seen an R-10 increase in the majority of the states. The total minimum insulation thickness has increased from 3.5" (R-20) to 5.2" (R-30) in parts of over 40 states. The map below can help you identify climate zones within your state. Climate zones 4 through 8 have experienced an R-10 increase. Additional resources are provided below to help you determine the applicable energy code and its associated minimum R-value requirements in a given state or local jurisdiction.    1. Minimum Insulation R-value Requirements: Non-Residential, Above Roof Deck    2. The Building Codes Assistance Project For more information on R-value requirements, please contact Brandon Reynolds at [email protected]

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January 28, 2020
Polyiso Storage, Handling, and Application Guidelines

It is well known that moisture is detrimental to roof system performance. Wet insulation can lead to several issues including mold, reduced membrane adhesion, and ultimately roof system failure during wind events. Because wet polyiso must be removed and replaced, watertight tie-ins are essential every night. But let's take a step backwards and look at overall polyiso storage before and during installation. An appropriate understanding of storage, handling, and application will result in a properly constructed roof system. Material delivery should be carefully coordinated with the roof installation schedule to minimize outdoor storage. However, short-term outdoor storage can be necessary at times. When storing polyiso outdoors, bundles should not be stored directly on the ground. If possible, they should be stored over a finished surface rather than dirt or grass. Bundles should be covered with a waterproof cover and secured to prevent wind displacement. Exercise care when handling polyiso to prevent breaking or crushing the edges and surfaces. Polyiso should always be installed on dry roof decks and in dry conditions. Apply only as much polyiso as can be covered by completed roofing the same day. Roof surface protection (plywood) should be used in areas where storage and staging are planned to reduce direct, excessive traffic. Tips: Place bundles on pallets or included feet over a finished surface such as gravel, pavement, or concrete. Remove polyiso bundles from trucks with proper equipment. Do not push bundles off the edge of a truck or "roll" a pallet across the roof deck. Follow Carlisle’s requirements regarding product application to ensure adequate performance of the roofing system. For more information, please contact your manufacturer's representative.

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