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Insulation R-Value Requirements for Louisiana

Insulation is rated in terms of thermal resistance, called R-value, which indicates the resistance to heat flow. The higher the R-value, the greater the insulating effectiveness. The R-value of thermal insulation depends on the type of material, its thickness, and its density. In calculating the R-value of a multi-layered installation, the R-values of the individual layers are added.

The effectiveness of an insulated ceiling, wall or floor depends on how and where the insulation is installed.

 
  • Insulation which is compressed will not give you its full rated R-value. This can happen if you add denser insulation on top of lighter insulation in an attic. It also happens if you place batts rated for one thickness into a thinner cavity, such as placing R-19 insulation rated for 6 1/4 inches into a 5 1/2 inch wall cavity.
  • Insulation placed between joists, rafters, and studs does not retard heat flow through those joists or studs. This heat flow is called thermal bridging. So, the overall R-value of a wall or ceiling will be somewhat different from the R-value of the insulation itself. That is why it is important that attic insulation cover the tops of the joists and that is also why we often recommend the use of insulative sheathing on walls. The short-circuiting through metal framing is much greater than that through wood-framed walls; sometimes the insulated metal wall's overall R-value can be as low as half the insulation's R-value.


R-value insulation chart
R-Value Climate Zone Chart for Wall, Attics, and Floors

Reading the Label
No matter what kind of insulation you buy, check the information on the product label to make sure that the product is suitable for the intended application. To protect consumers, the Federal Trade Commission has very clear rules about the R-value label that must be placed on all residential insulation products, whether they are installed by professionals, or whether they are purchased at a local supply store. These labels include a clearly stated R-value and information about health, safety, and fire-hazard issues. Take time to read the label BEFORE installing the insulation. Insist that any contractor installing insulation provide the product labels from EACH package (which will also tell you how many packages were used). Many special products have been developed to give higher R-values with less thickness. On the other hand, some materials require a greater initial thickness to offset eventual settling or to ensure that you get the rated R-value under a range of temperature conditions.

 

 

Find the best insulation contractors in Louisiana - LA

Within this site, you will find information and specifications on insulation and insulation contractors including fiberglass, cellulose, spray in, and spray foam and injection foam insulation. LA insulation installers service all of major LA regions including New Orleans, Baton Rouge, Metairie, and Lafayette. We also install insulation in Kenner, Bossier City, Alexandria, Jena, New Iberia, and Chalmette.

The state of Louisiana has all Types of Insulation in use for homes and commercial buildings. There is Cellulose Loose Fill, Blown-In Insulation, Wool Fiber Batts, and Fiberglass Batts / Blankets in the more traditional and older construction. Louisiana also uses Cellulose wet spray insulation as well. Some of the newer more energy efficient insulation systems for your house and industrial buildings include Spray Foam Insulation, Reflective / Radiant, Rigid Panels, and Cotton Batts (Denim and Blue Jeans). We also see Structural Insulated Panels or SIPs used for high wind applications and Injection Foam Insulation used for retrofit insulation applications. Other materials include Cementitious Foam and Polystyrene Board Foam Insulation.

Not only do Louisiana homes use these insulating materials, but they are used in the following energy efficient applications. The two main types of insulation are for Thermal Insulation and Acoustic Insulation. Either of these can be used in Attics and Wall Insulation as the most common place in the house. We also see insulation LA for Basements, Roof Insulation, and Floors and Garages.

Choosing the right Insulation Contractor in Louisiana is easy by using this website. Louisiana insulation contractors are used to provide Energy Efficiency to your home or office. Insulation contractors Seal Air Leaks, create Air Barriers, Sound Reduction, and Building Strength. Improved Air Quality can also result from insulation improvements and weatherization assistance programs. Insulation provides a Vapor Barrier, seals and caulks cracks and gaps in your home or buildings structure.

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