April 15, 2019

Zinsulation is going out of business due to exhausting all inventory of single-thickness bunks.

Since those were the bread-and-butter of the business for the last 9 years, sales volume and gross sales revenue have decreased to where it isn’t profitable to continue.  What’s left wil sell at close-out prices.

Remaining material is mostly unsorted 4’x8’ and 4’x4’ Seconds-Grade sheets of varying thicknesses stacked randomly in 4’ high stacks. The cost to pay someone to sort those mixed bunks (approximately 100 of them) into same-thickness material just isn’t economic. The majority of those mixed bunks consist of only 2 different thicknesses, of anything between 1” and 4” thick.

Folks who can buy this material in the unsorted bundles and then sort them on their building site prior to installation, can achieve maximum R-Value walls/ceilings for minimum cost.

I also offer bulk purchases (minimum of 24-bunk Semi-load) at further discount.   If someone were to make an offer for everything, I would be inclined to drop prices to the $100.00/bunk range.

There is still some of the higher Overrun-Grade material left, but it is only in the Tapered 4’x4’ material. They are also at close-out prices.  See the "SPECIALS" page.

Over the next few weeks I will modify this website for this new direction, including pictures of the remaining materials and prices. In the meantime, call or email with any questions.

Thanks again to the many great customers over the years!


    About Polyisocyanurate (Polyiso) Insulation...

This material comes in 4 foot by 8 foot (4’X8’) or 4 foot by 4 foot (4'X4') rigid insulation sheets in many different thicknesses/R-Values.  Typical R-Value is about R-6 per inch of thickness.  It has 15-25% better insulation R-value per inch thickness than expanded/extruded polystyrene or other similar materials found at the big-box home improvement stores. And unlike Polystyrene or Polyurethane, which are "thermoplastic" materials, Polyisocyanurate is a "thermoset" product that will not soften or melt at elevated temperatures - a significant advantage to limit flame spread in a fire (See HERE for more details).

If you don’t find the exact thickness you want, the same R-Value is achieved using multiple layers of thinner sheets.  And the cost will be the same since the material is priced by the cubic foot- not square footage.  IE: if you need 5" thickness of insulation you can stack two 2.5” sheets and achieve the same R-Value as a single 5” sheet would provide and the cost is the same as using a single 5" sheet.

This material is useful for insulating homes, basements, shops, overhead doors, trailers, metal buildings, wood frame or concrete buildings, concrete floors/walls, greenhouses, animal shelter/barns, water pump/tank/well enclosures, and many other spaces where the highest R-Value-per-inch-thickness is desired (See the Picture Gallery page for more details and installation ideas) 

Most material is sold by the bunk.   A "bunk" is a bundle of material that measures 4'x4'x8' in size.  The number of sheets in a bunk is determined by the sheet thickness.  Since a bunk should be 48" (4') in height, only enough sheets are stacked up to get as close to that height - rounding down as needed.  Thus a bunk of 1" sheets would consist of 48 sheets, while a bunk of 2" material would have 24 sheets.

These insulation sheets consist of a closed-cell polyisocyanurate foam insulation core with thin 'facer' material laminated to both sides.  The facer material provides tensile strength to help resist breakage the same as the paper facer on both sides of a sheet of gypsum board.  The facer does not contribute meaningfully to the insulation R-Value. Most of my inventory has a cellulose fiber (paper) with embedded fiberglass strands facer, which is much like a heavy-duty version of the construction-paper your teacher gave you in Elementary School.

SECONDS are sheets that were pulled from the production line by the Quality Assurance inspectors for visible irregularities such as cosmetic defects, interior/edge pockets and/or voids, irregular or rough edges, out-of-tolerance dimensions, etc.   SECONDS bunks are not packaged in bags as the OVERRUN material is. 

OVERRUNS usually appear factory-perfect, however they still do NOT meet one or more of the intended design specifications. Some reasons I've seen for these failures are CORE DENSITY, COMPRESSIVE STRENGTH, FACER ADHESION, or some other of the tests that are done after they've already made it through the STACKING/BAGGING/MARKING stage. That is why OVERRUN bunks come packaged in the factory-original heavy-duty white shrink-wrap bags whereas SECONDS do not.  And although of a higher physical quality than most “SECONDS”, they ALSO COME WITHOUT WARRANTY OF ANY KIND(See Warranty Disclaimer page)

ONE LAST POINT:  This material was designated NON COMPLIANT by the manufacturer and as such has no brand markings on the sheets or packaging. SPECIFICATION SHEETS or FACTORY CERTIFICATIONS ("CERTS") are not available should any authority having approval rights over your project require such documentation.  And since Zinsulation does not accept returns, know your applicable building codes and inspection/approval requirements before buying this material!


Call my cell: 8Ol-7l7-589O or email sales@zinsulation.com for further information. 

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PS: I'm a "retired" old fart and put this cheesy web site together myself.   (Zinsulation has 1 employee: me)

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