Requirements for Insulation

Mandatory Requirements for Insulation, and Roofing Products.

When building a home for your family in California, there are a set of rules and codes that you need to follow. All the rules are set in place to ensure that you build a standard house that is energy efficient and healthy to your family. Since the rules and the regulations are many, it’s good to look for an experienced contractor who understands all the rules. Experience contractor will help you avoid a lawsuit by following all the stipulated building regulation to the latter. Let’s have a look at some of the mandatory requirements for insulation, roofing products, and radiant barriers.


Rolled Batts
Fiber thermal insulation for houses and facades textured background

Before installation of, installation in your home, it needs to be certified by the relevant authority. For the approval of the insulating material, it has to be under the California Code of Regulations. Under the California Code of Regulation, there are outline standards of the material and how each material should be installed. The material that you choose to install should be waterproof, have low thermal conductivity, and non-flammable. If you are not able to select the collect material for your installation, your contractor will ensure the material meets the standards.

Insulation Installation in an Existing Home.

When you are installing the insulation on an existing home, there are some things that you need to follow. Once the contractor handles the installation of the insulation on an existing home, they should follow the below procedure and assures the homeowner of the following the process in writing.


When adding insulation, it should be according to Section 150.0(a). The R-Values should be as stipulated. The R-Value is the measure of the insulation material. All the insulation board comes with different thickness and sizes.

Water Heaters

When you are installing insulation on the inner side of a water heater tanks, you should ensure that it is not less than the R-12. The R-12 is thick enough to stand the heating. You contractor understand all this, so don’t be afraid when you hire the right contractor you will get the best.

Ducts Insulation

Your contractor should follow Section 605.0 of the CMC during the duct insulation. The CMC referred to California Mechanical Codes, which are the rules that were put in place in 2010 to help in managing the installation of the HVAC.

Roof and Ceiling Insulation

The aim of installing the insulation on the roof or the ceiling is to ensure that there is minimal heat loss through the top. When you are installing the insulation, several rules need to be followed. Some of the rules include;

Rooled batts insulation
using rolled batts for insulation in a home attic.

When you are installing the insulation, ensure that it has direct contact with the roof or the ceiling. There is no limitation on where you should install the insulation; you may choose to install it on the top or the bottom of the ceiling or roof deck. Before installation, ensure that the surface is dry.

After the installation of the roof insulation, the space between the ceiling and the roof should not be considered as the attic for non-residential building. This is to comply with the CBC ventilation and attic requirements.

When installing the insulation on the ceiling, you should not place it on the install it on the removable ceiling. The installation should follow Sections 120.7; this is the ceiling and roof codes and requirement.

These are just a fraction of the rules and regulations that govern the installation of roof insulation. Your contractor understands these rules and all the control. All you need is to hire the best person for the job.

Radiant Barrier

The radiant barrier is installed to reduce solar heat gain.  It is mainly installed under the roof deck or on the exterior sides of the attics. The material used should be highly reflective with a low emitting material since it’s supposed to reduce heat gain. There are sets of rules that are put in place to manage the installation of the radiant barrier. The material in the installation should have the remittance of less or equal to 0.05. The testing should be done as per the ASTM 408 or C1371. Another rule is that there should be certification before installing done by the authority according to the standard insulating material codes and regulations.