Celotex Insulation

Celotex Insulation for Reducing Energy Costs

There’s no doubt, in this age of soaring energy costs, that the subject of insulation is more relevant than ever. Forms of insulation vary widely, from blown or sprayed, to rigid boards or rolled sheets, affording many options that pose questions as to which to use.


Regardless of type, insulation’s role should be to prevent unwanted air circulation throughout the home. As heat naturally flows from warmer to cooler spaces, warm air is deposited inside, during summer, actively seeking the cooler interior. Likewise, when it escapes to the cooler outdoors in winter, heating efforts are sabotaged. Preventing such inefficiency, resulting in lost energy and higher bills, is a primary goal in adequately and properly insulating homes and commercial buildings. To that end, Celotex insulation, a name that has been in the industry forefront since the company’s, 1921, founding in Louisiana, is one brand worth noting.

Celotex insulation, used in both the commercial and residential marketplace, is probably best known for its rigid foam insulation products. Available in various thicknesses and standard, 4×8, sheet sizes, it is used in flooring, pitched and flat roofs, solid masonry walls, and wood and steel framed buildings. Fairly lightweight, it is also ideal for loft conversions and roof applications. For comparison purposes, a rigid sheet, about 1″ thick, has a claimed R-value of 7.2. The R-value measures insulation’s resistance to heat loss, increasing values positively correlating with product effectiveness.

This non-structural, rigid, foam board is made with a polyisocyanurate foam core, reinforced by glass fiber, then laminated on both sides with aluminum foil. The core of rigid foam, with closed cell construction, is very resistant to heat flow, and the aluminum foil “facers” provide moisture and air filtration barriers. Additionally, Celotex claims that, if the insulation is installed to take advantage of the foil’s reflective qualities, there will be an additional R-value gained when using it. That would occur, if installed to reflect heat trying to escape, as through an attic, into a surrounding air space.

Cost wise, the standard 4×8, rigid sheet, retails around $8 per sheet. It is relatively easy to install and cuts with a knife or hand saw. Moreover, Celotex insulation meets or exceeds national and local industry performance requirements, and is earth friendly, with a composition of 80% recovered and recycled products.

While it’s clear that older homes benefit from increased insulation, even newer homes can often use additional attic insulation to reduce utility bills. It doesn’t take long for insulation to pay for itself, and of course, future savings will be ensured, as well as increased home value.

If space and work conditions permit, it follows that using Celotex insulation is one way to make the interior environment warmer in the winter, cooler in the summer, providing more uniform, cost efficient temperatures. As the construction of the sheeting boards also lends itself to sound absorption, a quieter atmosphere might even await at the end of the day! Furthermore, the moisture barrier, provided by the aluminum foil “facers,” makes this type of insulation suitable for either land or marine-based installations.

Headquartered in Tampa, Florida, Celotex has long had a reputation as a national manufacturer of quality residential and commercial building materials. With the current national and worldwide focus on energy savings, it is likely to have a continuing, long-running future.

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