GCP Applied Technologies has developed the APPERTA® non-BPA coatings product line in response to market trends and consumers who see additional value in promoting the use of non-epoxy and/or non-PVC based formulations.
New advances in hi-tech analytical equipment allow detection of monomers at extremely low concentrations.
In case a customer or brand owner is interested in preserving the non-BPA status of the coating, the guidelines below must be adhered to in order to avoid detection of critical substances that may lead to unexpected analytical results.
GCP has confirmed analytically that the APPERTA® non-BPA family of coatings may present traces of BPA if coated in lines that have previously processed BPA containing products due to the presence of such residual coating throughout the line.
Potential areas of contact between non-BPA and residual BPA containing coatings may occur:
- At the coating application unit, due to poor cleaning of the coater. Critical points are tubes, hoses and pump.
- In a stirred container, due to an improperly cleaned stirrer.
- In the oven, by vapour-phase transfer of an external BPA-containing coating, if internal APPERTA® non-BPA primer or internal system is applied first.
- In the oven, if the oven has been previously used to cure BPA-containing coatings.
- In the stacked sheet pile, assuming potential under-curing, if APPERTA® non-BPA internal system is stacked in direct contact with the BPA-containing external coating.
The following recommendations will significantly reduce the potential for BPA cross-contamination:
- Properly clean all equipment before use.
- The stirrer must be completely free of any previous coating residue before use.
- The roller coater needs to be cleaned thoroughly, even those parts which are not in direct contact with coating.
- Tubes, hoses and pumps of the coater require special care and need to be rinsed with an appropriate thinner or cleaning solvent before and after use. Please refer to the section on thinner recommendations.
- If the oven has been used before with BPA-containing coatings it is recommended to clean the oven by running close to the maximum temperature (215 – 220 °C) for 45 – 60 minutes without feeding to attempt to purge the atmosphere of any residual traces of BPA.
GCP Applied Technologies produces and supplies DAREX® can sealants to customers all over the globe. DAREX® sealants ensure quality in over 300 billion food and beverage cans each year.
In 1919, GCP developed “flowed-in” gasket technology, revolutionizing modern can production. More than 90 years and trillions of cans later, DAREX® sealants are still the foundation of the industry.
Broadest portfolio in the industry
Specially forumulated DAREX® sealants have evolved in parallel with the industry, adapting to the ever-changing requirements.
This intimate, customer-focused customization allows GCP to offer the world's broadest and most technologically advanced portfolio of can sealants. The comprehensive DAREX® product portfolio includes products for beer and beverage, food, aerosol, general line and specialty applications.
DAREX® is the only brand that offers both solvent base and water base can sealants. As the only global supplier of both technologies, DAREX® is atune to the advantages and disadvantages of high solids, low VOC, HAP compliant solvent technology, compared to high solids water base technology.
Each technology has benefits for certain applications, and GCP is able to help customers make the best choice for their operations.
In 1978, GCP Applied Technologies — formerly Grace Construction Products — developed the first self-adhered
Grace Ice & Water Shield®.
Nearly four decades later, it's still the product building professionals trust to protect their projects. It's also peace of mind for homeowners.
Once installed, the revolutionary membrane protects your home, by its three crown jewels — it sticks to the deck, sticks to itself forming watertight laps, and it seals around fasteners — for a barrier impenetrable to wind-driven rain, ice dams or anything else Mother Nature can precipitate upon a roof.
If installed properly, this reliable
roofing underlayment can save homeowners $18,000 in reroofing costs. Here's how…
The Conventional Method
- Cut the membrane into 3-5 m (10-15 ft.) lengths and re-roll loosely. Peel back 300-600 mm (1-2 ft.) of release liner, align membrane.
- Peel the release liner from the membrane. Press the membrane in place with heavy hand pressure.
- Minimum overlap guidelines are set by the manufacturer. GCP requires side laps to be a minimum of 90 mm (3.5 in.) and end laps a minimum of 150 mm (6 in.).
The Back-Roll Method
Some contractors prefer the back-roll method. The back-roll technique can go quicker than the conventional method since you can lay down the membrane in just a few minutes!
- Start by unrolling a 3-5 m (10-15 ft.) piece of membrane, leaving the release liner in place. Align the membrane and roll in the intended direction of the membrane application.
- Carefully cut the release liner on top of the roll in the cross direction, being careful not to cut the membrane.
- Peel back about 150 mm (6 in.) of the release liner in the opposite direction of the intended membrane application, exposing the black adhesive.
- Hold the release liner with one hand and pull the roll along the deck with the release liner, leaving the applied membrane behind.
- Stop frequently to press the membrane in place with heavy hand pressure, smoothing the membrane toward the outer edge.
- When finished with the roll, go back and remove the remaining release liner.
- Smooth to the edge.
Click below for detailed drawings displaying proper installation at eaves, valleys, skylights, chimneys, and other important details…
GCP will be sharing "New Technologies in Chemical Admixtures for Use in Shotcrete" at the Eastern Australian Ground Control Group’s (EAGCG) conference, October 13-14 in Brisbane. The EAGCG conference is the latest in a series of "new technology" themed workshops. The coming event is tailored specifically for the mining industry and will focus on cost-effective solutions.
fully advanced shotcrete system helps mine owners reduce shotcrete operating costs, minimize excavation downtime, achieve desired technical properties, and meet safety standards. This
TYTRO® Shotcrete System offers specialty admixtures and fibers that can be formulated for mixes to meet your project and performance requirements.
Niki Jackson is the Regional Manager for Shotcrete for Australia and New Zealand. He is based in Sydney and travels extensively throughout the region to provide technical support for civil and mining projects.
Many commercial structures are constructed with structural steel frames. Structural steel
fireproofing is critical to protecting the integrity of the steel members from fire damage.
fire protection products come in a
range of densities (standard, medium and high) and economically meet recent code changes for higher performance requirements in mid- and high-rise construction.
GCP's offerings are spray-applied, which allow for timely installation. They protect concealed or exposed, conditioned or unconditioned interior spaces, as well as exposed exterior applications.
GCP manufactures a wide variety of concrete admixtures and fibers to meet design and construction requirements.
Corrosion inhibitors cost-effectively protect reinforcement in areas such as parking garages. Cracking and shrinkage in deck toppings are mitigated through the use of
synthetic macro-fibers and
surface retarders, and
high-range water reducers are combined to create architectural precast panels and precast/prestressed elements.
To produce consistent quality concrete, every step of the process must be monitored and controlled.
Verifi® is a patented concrete management system providing sophisticated, automated process monitoring and control during transit from the ready-mix plant to the jobsite.
Verifi® offers a new level of concrete quality control by enabling monitoring of critical concrete properties and automated addition of water or admixtures to maintain optimum concrete slump control and minimum concrete variability.
Complex wall designs often pose a challenge for design professionals to ensure acceptable building envelope performance. A properly designed
air barrier system can provide the level of protection needed to preserve the aesthetics, performance, durability and energy efficiency for the complete life of the building. GCP is a global leader in
air barrier systems, offering a full line of sheet and liquid, permeable and impermeable
Air barriers are the first line of defense in maintaining energy efficiency and improving indoor air quality. As moisture and air seep into a building, its structural integrity begins to deteriorate, resulting in poor building envelope performance. Unexpected air leakage through the building envelope carries moisture that can promote mold and rust in the building structure, as well as cause higher energy consumption.
The United States Department of Energy states that up to 40 percent of heating and cooling energy can be lost through this uncontrolled movement of air, driving up energy usage and cost. The best prevention is to design an air-tight building envelope, consisting of properly installed, top quality
air and moisture barrier materials.
Structural and foundation
waterproofing are critically important for commercial building structures. Depending on its application, below-grade
waterproofing could be pre-applied or post-applied. GCP Design Assist project experts know the difference and are well-versed in both above- and below-grade installation.
waterproofing membranes are applied after the installation of the concrete walls. Pre-applied
waterproofing is applied before the foundation is poured. These membranes may be used in wet environments or under wet conditions to a certain depth in order to promote soil stabilization and to provide foundation
A pre-applied application must adhere to a strict set of installation guidelines; once the membrane has been installed, repair or maintenance is very difficult. Post-applied below grade
waterproofing needs to be well-adhered and sealed to the structure, providing flexibility to accommodate structural movements.
In commercial applications, construction professionals have trusted GCP Applied Technologies' innovations in advanced above- and below-grade
waterproofing membranes for more than 50 years.
Elevated Deck / Green Roof
Above grade horizontal surfaces are prone to catching and holding water. These areas may be used as pedestrian walkways, outdoor plaza decks, food courts or green roof areas to attract visitors and increase footfall for retail outlets.
waterproofing membranes, protection and drainage are applied directly to the structural deck and typically covered by a permanent wearing surface. The membranes can be tied into both the below ground
waterproofing and façade membranes to ensure total continuity of the building envelope from a single source.
GCP Applied Technologies' advanced
TYTRO® Shotcrete System is specially formulated to meet job requirements in underground tunnel construction, among other demanding shotcrete spray applications. GCP's Research & Development team
won an award from the American Shotcrete Association (ASA) at the
World of Concrete 2016 for their revolutionary research into
rheology control, as a replacement for silica fume.
For more background on this research into cutting-edge shotcrete admixtures, read GCP's R&D studies below…
GCP's award-winning research into rheology control for shotcrete
The objective of this project was to evaluate the suitability of colloidal silica as a replacement for silica fume in wet-mix shotcrete.
In underground applications such as mining and tunneling, shotcrete is widely used for structural support of permanent openings, linings, and rock stabilization.
The purpose of this article is to present the performance evaluation of wet-mix shotcrete containing a pozzolanic-based rheology control (RC) agent as a replacement for silica fume (SF).
This paper presents the results of a case study conducted with a major mining operation to assess the impact of pozzolanic-based rheology control agent on the performance of a wet-mix having a specified mix design.
The objective of this paper is to present the performance evaluation of wet-mix shotcrete incorporating a pozzolanic-based rheology control agent which is a liquid-based product that contains nano-scaled colloidal silica particles with high pozzolanic reactivity.
TYTRO® SHOTCRETE SYSTEM
The Atlantic hurricane season occurs each year, from June 1 to November 30. If you haven't prepped your home by early September, sometimes it can be too late. Hurricane hazards come in many forms, including storm surges, high winds, tornadoes and flooding. It is imperative for families, businesses and communities alike to institute a plan addressing all of these hazards.
Take action before, not after
Understand your roof and its warranty
Read your roof’s construction and warranty paperwork. Understanding how your roof has been constructed is the first step to evaluate its current condition and determine if repairs or upgrades are required. Understanding the terms and conditions of your warranties may prevent you from making changes that will void the warranty.
Look for problem areas on your roof
Loose or curled shingles, broken or missing tiles all warrant repair. Also inspect the flashing, drainage system, and accessories such as vents and skylights Ask a trained roofing professional if additional reinforcements to the roof structure such as additional fasteners or hurricane clips, are required.
Beyond the roof, a home’s doors and windows can also become major leak zones. Most commonly this is due to breakage of windows due to flying debris. However, even if the windows and doors are well shuttered, wind-driven rain can be blown into the house at these points, especially if they have not been properly flashed and weatherproofed. The following are some signs of water damage:
- Leaks or breaks in seams around window trim and sills
- Uneven doorframes
- Discolored plasterboard
- Peeling wallpaper
- Chipped or cracked stucco finishes
- Mold, mildew, or rot in the walls, insulation, and electrical systems
- Missing, cracked, or blistered paint inside the home
Use the right products
If repairs are needed, don’t skimp on quality to save a few cents. Much of the damage associated with hurricanes and other serious storms results from water entering the home when roof coverings or siding is blown off. This is why it is imperative that you have a secondary layer of waterproofing protection underneath the shingles and siding. If proper protection measures are not taken, the resulting leaks are the main cause of interior damage, as well as potential causes of rot and mold. Rot and mold can lead to major structural damage and even potential health problems for homeowners.
ROOF: FEMA has published recommendations for the use of fully-adhered roofing underlayments, such as
Grace Ice & Water Shield®, as an enhanced secondary water barrier for homes in both coastal and inland hurricane-prone areas. In the event roof coverings are blown off or water manages to get underneath your shingles, these underlayments are the key to preventing water infiltration.
WINDOWS, DOORS & MORE: Flexible flashings such as
GCP's Vycor® line of flashings, can be used to seal the most vulnerable spots, including windows, doors, corner boards, and other non-roof detail areas. Highly conformable, self-adhering waterproofing membranes form a weather-tight barrier around unwanted openings in the wall sheathing system. GCP's website offers a
home waterproofing interactive guide for more guidance.
Find a pro
Identify reliable, knowledgeable professionals that can perform work safely. It’s usually best that all inspections, maintenance and repairs are completed by trained and experienced people. You should demand that they use high quality materials. The amount of money you can save by selecting less expensive lower quality products is insignificant compared to the damage caused by water infiltration. Check this infographic for more information on selecting the best roofing underlayment for your home.
You should find a trusted building professional to repair your storm damage so that you have a strong roof over your head, protecting your wallet and home from future storm damage.
SAVE ON YOUR FIRST ROLL OF VYCOR® enV-S™