Energy saving benefits:
Outsulation® RMD is an exterior insulation and finish system that is revolutionizing the Residential and commercial building industry. The system is based upon the concept of putting insulation on the outside of the wall. The energy efficiency of Outsulation® RMD is provided by the expanded polystyrene (EPS) insulation board used, which increases in thermal efficiency with the increase in EPS thickness. Up to 4″ of EPS can be installed on the outside of your wall, giving an R-Value of 15.4. Since the insulation is placed on the outside of the studs and sheathing, none of this R-Value is lost due to heat transfer through the studs. Up to 30% of R-Value can be lost when conventional batt insulation is used because of the breaks in the insulation where studs are located. This results in a more constant air temperature (warm or cool) inside your home and lower energy bills.
In additional to superior energy efficiency, Outsulation® RMD delivers design freedom, durability, beauty and cost effectiveness. Finishes are available in a wide variety of colors and textures, giving the homeowner unlimited choices. Finishes can emulate brick, granite, stucco, limestone, precast and more.
We all would like to make our environment cleaner and healthier. Outsulation Systems are energy efficient exterior wall systems that leave a tiny environmental footprint on the globe with a significant energy savings benefit for you.
Outsulation Systems are proprietary exterior insulation and finish systems, consisting of the following components:
- Expanded polystyrene (EPS) insulation board – Increased Wall Insulation R-Value
- Fiberglass reinforced base coat – Increased Wall Strength
- Textured acrylic finish and architectural shapes – Increased Wall Beauty
These components can be attached to an approved substrate or installed over a liquid applied, air and weather barrier, for even more protection.
By placing the insulation on the OUTSIDE of the building, air leaks are sealed and thermal bridging (heat exchange through wood or metal studs) is virtually eliminated, so you keep more of your conditioned air inside.
Why is this important to you? If you live in a cooler climate, an Outsulation system will keep the warm air that you have heated inside; if you live in a warmer climate, it will keep the cool air that you have air-conditioned inside – Saving you money!
Thermal Performance of Walls:
Wall energy performance criteria in Title 24 require meeting certain R-Values and U-Factors. “R-Value” is the resistance to heat conduction. The higher the R-Value the better a wall conserves energy. “U-Factor” is the heat conductivity of a wall. A larger U-Factor means worse energy conservation. U-Factor is the inverse of R-Value. When continuous insulation is used on the outside of the building, studs don’t break the continuity of the insulation. In essence, the building is covered by a blanket of insulation, which is an advantage of EIFS and insulated stucco assemblies over other types of cladding options. Thermal breaks caused by studs provide an opportunity for energy to flow in and out of the building. Air and water resistive barrier coatings provide a continuous air-blocking layer: climate controlled interior air stays in and uncontrolled air stays out of the building, reducing the building’s HVAC system energy consumption to maintain the desired air temperature.
In a study released by the prestigious Oak Ridge National Laboratory (ORNL) in June of 2002,EIFS walls were rated more thermally efficient than any competing wall system after being subjected to rigorous independent testing at the nation’s pre-eminent scientific research company. The recently released landmark report provides rich, new evidence of an important source of differentiation for choosing EIFS in an environment where thermal efficiency is desired by the building owner.
A clear wall comparison was performed by ORNL scientists at the ORNL facility in Oak Ridge, Tennessee. Seven common cladding types:
- Standard EIFS
We’re evaluated to arrive at an effective “Clear Wall R-Value” for each cladding as used in their most common installed wall configuration. The Clear Wall R-Value considers the entire wall construction, including material discontinuities and thermal bridging effects. The overall opaque wall performance for a typical building is then measured using the “Whole Wall R-Value” concept, which additionally included effects from transition details at areas such as windows and doors, roof and floor lines, foundation and corners and others.
The Result ?
EIFS achieved an 84% higher R-value than the next best-performing cladding.
Hot-box test and finite difference computer modeling were used to analyze steady state thermal performance of the clear wall area and wall interface details for the EIFS wall system with 3 5/8-inch light gage steel framing.
Guarded hot box tests formed the basis for a finite difference computer model calibration. This computer model was then used to calculate local R-values for all typical wall interface details and the whole wall R-value. A one-story office building (140’x 60′) was utilized for this analysis.
Thermal performance of the wall system was compared with six competitive wall technologies using the geometry of the office building (floor plan, area of elevation, windows, doors, etc.). Nine basic building envelope details were analyzed for each of the considered wall technologies. For all analyzed technologies, clear wall and local R-values for all wall interface details were computed based on three-dimensional finite difference modeling. They served in the calculation of the whole wall R-value and analysis of distribution of heat losses through the building envelope area.
The ORNL report is significant because it considers a whole wall or through wall assembly, taking into account all the materials that make up the wall structure. What is unique about the ORNL study is that it compares all claddings as they would be used on a building, including thermal bridges and other discontinuities.
The information contained in the study represents “real world” use and measures performance on an equalized footing.