FOR SALE:  POLYISOCYANURATE FOAM INSULATION SHEETS

Picture Gallery

   
Here are pictures of my shop, showing the ceiling and a ceiling/wall/wall corner.  The red metal purlins and girts are 8 inches deep, and the insulation (two 4" pieces thick for R-48 walls and ceiling) fills the entire space between the exterior metal sheets and the inside ledge on the purlin/girt.  Note that I used expanding poly foam (like "Great Stuff" in small cans or Dow "Insta-Seal" in 15 lb tanks) to seal between sheets and fill any gaps, and it also works somewhat as a glue.  However, thermal expansion/contraction of the metal building components could have weakened the foam "glue" so the silver rectangular 5" X 8" sheet metal pieces were added to mechanically hold the insulation sheets in place.

Also note these pictures were taken before vapor and thermal barriers were installed, and yet this building (40' X 80' X 18') was kept at a constant 65 degrees during this last, cold Idaho winter for only 360 gallons of propane.
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These two pictures show insulation panels cut to fit between 2x4 wood framed walls prior to putting up the vapor barrier and gypsum board (Sheetrock) panels.  I learned real fast that trying to produce perfect, tight-fitting joints took a long time, but things went a lot faster when I began cutting the insulation panels a little undersize and using the Dow "Insta-Seal" or "Great Stuff" foam to fill the gaps between the insulation panels and the wood framing members.


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The LEFT photo is a closeup of the long-axis edges of 1 inch sheets in a "seconds" bunk, showing some of the "edge defects" that some sheets within roughly half of all "seconds" bunks exhibit to one degree or another.  The percentage of sheets in this "seconds bunk with defects" is about average for bunks that have significant "edge defects"  The RIGHT photo is a closeup of a bunk with very few edge defects.  Roughly 1/4 of all "seconds" bunks have very few if any edge defects.

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The LEFT photo is of the long axis (8 foot edge) of a "seconds" bunk with the lower half of the sheets exhibiting above-average severity of edge defects.  Less than 1/5 of bunks will have some sheets with this severety of defects. (Except for 1/2 inch thick material, which has higher percentage of sheets with significant edge defects)  The RIGHT photo is of the short axis (4-foot edge) of a bunk of 1 inch "seconds" material with the lower half of the sheets exhibiting "significant voids" that likely run the full 8-foot length of the affected sheets. Again, the definition of "significant voids" are voids that will have a small impact on the insulation performance of the sheet.  In these particular sheets, a small (1/2 inch wide) strip of the sheet running right down the middle will have less R-Value than the rest of the surface area of the sheet because the void goes all the way through the 1 inch thickness of the sheet.  If these sheets were thicker (say 1.5 inch or higher), the void would likely not go through the entire core thickness, thus the disruption to the insulating performance would be much less to none at all.  Please note that the vast majority of "seconds" insulation sheets (except the 1/2 inch material) do not have defects that materially affect their insulating quality.   I am just trying to make sure that every type of defect is represented and explained here so there are no suprises to any buyers. 
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These 2 pictures are of some of my larger sales.

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