Olympial Steel Buildings High Energy Savings Insulation System For Pre-engineered Steel Buildings
The Olympia Steel Buildings High Energy Savings Insulation System uses 12” of insulation on the roof for an R38 energy rating on the roof, and 9” of insulation on the sides for an R30 energy rating on the sides. To achieve an R38 on the roof, ten inches of insulation is placed between the 10” high purlins and an additional 2 inches of insulation is placed on top of the purlins. This total of 12 inches of insulation yeilds an impressive R38 energy efficiency rating.
The High Energy Savings metal buildings insulation system, which increases the steel buildings energy efficiency by over 60%, includes a vapor barrier which is easily installed under the purlins and over the girts. The vapor barrier is held in place by strapping and provides an attractive finish giving the appearance of a false ceiling and finished walls. The vapor barrier sandwiches the insulation securely between itself and the metal sheeting to prevent condensation and sagging.
Competitors Web Truss Insulation System
The metal buildings competitors web truss insulation system can use only 6" or 8" of insulation placed between wooden purlins on the roof and the wooden girts on the sides, since wooden purlins used are 2x8's or 2x6's and the girts 2x6's or 2x4's. The Web Truss insulation system is limited to a maximum of 8” of insulation on the roof since the wooden purlins are 2x8’s. Therefore, the 8” insulation can only provide a maximum R22 rating.
The Olympia Steel Buildings Energy System offers an efficient R38 rating. The R38 rating yields approximately a 60% higher energy efficiency than the web truss insulation, which has a maximum energy efficiency rating of only R22.
More Problems With Web Truss
In the web truss insulation system, the insulation must be stapled to wooden purlins and girts on each side to hold it in place and the gap between the staples allows moisture to get into the insulation. The moisture infiltration allows water to collect and will cause the insulation to sag, the staples will loosen and the insulation, now a wet mess, will fall down. Another method of holding the insulation in place is to line the inside of the roof and the walls with plywood or sheetrock, but this is extremely expensive.
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