HP BLOCK
- Product Descriptive Name
- Calcium Silicate Block Insulation
- Product Short Description
- Water-resistant, Type IA calcium silicate block insulation, designed for applications that operate at temperatures up to 1200°F (650°C).
Water Resistant* - The insulation is engineered to withstand a heavy rainfall (1¼” of rain/ hour) for up to 20 minutes without absorbing more than 15% of its weight in water. This will allow contractors to install the insulation without immediately applying the jacketing afterward, offering more time and flexibility in the installation process than has traditionally been available.
Inhibits Corrosion - A proprietary corrosion inhibitor, called XOX Corrosion Inhibitor®, is integral to the chemical makeup of HP Block
Durable - HP Block is a cementitious insulation with exceptional compressive strength (>200 psi/1379kPa), making it ideal for applications where mechanical abuse is likely. The inorganic binder will hold its shape and maintain the physical integrity of the insulation, even past 450°F, the point at which most organic binders burn off.
Extended Life Cycle - When properly installed and maintained, HP Block’s superior physical strength and inorganic binders can provide an insulation lifespan of up to 25 years or more.
Explore our Industrial insulation tools, education and training programs built specifically to aid you in your professional development
Request a Technical Presentation
Johns Manville offers customized presentations to help you stay up to date on the latest market trends and enhance your knowledge of JM products.
The Source: Industrial Insulation Resource Library
The Source is where we house the latest Insulation Intel® on industry trends, insights, and continuing education opportunities. This is a resource built specifically to aid you in your professional development. Explore our webinars, compare specs, and follow our blog all right here at The Source.
SmartBinder Resource Library
Your resource for all JM documents in one place.
Where to Buy
Use our insulation locator tool to find JM products near you.
Calcium Silicate Pipe and Board Insulation Resource Library
Johns Manville's Thermo-1200® calcium silicate has added corrosion inhibitors, become water-resistant, and is now offered in a curved segment configuration for large diameter (30” – 126”) equipment
Cross-Flo Jacketing Resource Library
Water isn’t welcome inside an insulation system, so get it out – and fast – with the help of Johns Manville’s Cross-Flo Jacketing. This new product is perfect for industrial and mechanical insulation systems, helping to expel unwanted water.
Corrosion Under Insulation (CUI) Resource Library
Thermal insulation is an integral part of the industrial complex. However, even the best designed and installed systems sometimes become compromised, resulting in the presence of water at the pipe surface and the potential for Corrosion under Insulation (CUI). Learn more about CUI and how JM provides the solution.
Insulation Solutions for Cryogenic and LNG Systems
Cryogenic and below-ambient pipe and tank temperatures can drop to -297°F, making a well-designed insulation system critical to ensure safe and efficient operations in an Liquefied Natural Gas (LNG) facility. At Johns Manville, we’re here to assist you with all the details you need to properly design, specify and install your cryogenic and LNG application.
Newark Energy Center
The construction of the Newark Energy Center gas-fired power plant in Newark, New Jersey called for the latest GE gas turbine technology to supply electricity to more than 700,000 homes.