Energy Savings and Comfort

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Energy Savings and Comfort of SIP Panels

Q. WHAT IS THE R-VALUE OF AN ENERGY SAVING SIPs STRUCTURE AND WHY DOES IT OUTPERFORM CONVENTIONALLY CONSTRUCTED BUILDINGS AND HOMES WITH THE SAME R-VALUE?

R-value of SIPs
A.
R-Control makes energy saving SIPs in various thickness with R-values of R-15, R-23, R-30, R-37, and R-45.

The R-value of a material or wall assembly was not intended to be the measure of thermal efficiency of a home. R-value only measures resistance to heat loss by conduction. Other forms of heat loss are convection, radiation and especially infiltration (leakage). Conventional framing with batt insulation promotes convection, radiant and infiltration heat loss. Testing at Oak Ridge National Laboratories (ORNL) showed that R-Control air tight Structural Insulated Panels for walls are far superior to conventional stick frame and batt insulated walls. 4-1/2” R-Control air tight Structural Insulated Panels were 45% better than 2×4’s with R-13 batt insulation and in fact was also better than 2×6’s with R-19 batt insulation.

Q. WHAT IS THE AIR LEAKAGE OF AN R-CONTROL AIR TIGHT STRUCTURAL INSULATED PANELS STRUCTURE?

A. ORNL tested R-Control energy saving SIPs side by side with stick construction. The results were impressive – the air leakage from the R-Control energy-efficient SIPs construction was less than 10% of the stick construction. R-Control energy-efficient SIPs translate into more comfortable structures with fewer drafts and lower utility bills.

ORNL Testing on SIPs

Q. SINCE R-CONTROL STRUCTURES ARE SO AIR TIGHT AND DELIVER THE COMFORT OF SIPs, DO THEY REQUIRE ADDITIONAL HVAC DESIGN CONSIDERATIONS?

A. Yes. The increased comfort of SIPs by means of stable R-value and lower air leakage, requires that heating and cooling equipment must be designed for a high performance envelope structure. This translates into lower capacity heating and cooling units and most importantly lower cost units. Since R-Control SIP structures are so air tight, air exchangers are required as part of the HVAC system to bring fresh air into the structure while simultaneously exhausting air from the structure to ensure optimum indoor air quality. The comfort of SIPs used in any structure is an unparalleled benefit to the occupants!

Q. HOW DO R-CONTROL BEST ENERGY SAVING SIPs HELP THE ENVIRONMENT?

A. Energy-efficient SIPs help the environment in many ways! The raw materials in R-Control SIPs have low energy requirements to make them. The structural facings of R-Control SIPs are made from renewable controlled growth wood resources. For years and years R-Control SIP structures will save fuel used for heating and cooling. The resulting pollutants from burning fuels like natural gas, oil and coal are dramatically reduced. The environment is then spared the contributing “green house” effect of burning additional fuels that conventionally built structures require.

Q. CAN ENVIRONMENTALLY FRIENDLY SIPs BE USED FOR GREEN BUILDING INITIATIVES?

A. Yes. R-Control, environmentally friendly SIPs have been used to build many homes and office buildings that achieve EPA’s ENERGY STAR Ratings or USGBC’s LEED Certification. And best energy saving SIPs are a main component used in ORNL’s NetZero Energy homes as well as the building system of choice by many leading universities for the Solar Decathlon Design competition.