California Attic Insulation Requirements

Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces.

California attic insulation requirements.

What is california s recommended attic insulation r value as you can imagine the r value for insulating an attic in alaska isn t necessarily going to be the same for insulating an attic in california. Title 24 insulation requirements california title 24 energy reports and calcs for all projects. 916 654 5106 for any 2019 worksheets 2019 sri calculator worksheet. If you think you re among the 90 of us homes that are under insulated 1 performing a simple insulation inspection will help you determine your insulation needs.

Walls with 2x6 framing require r 20 minimum insulation for wood framed. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. In fact there are building codes that require a certain r value for insulation depending on where in the country you live. The higher the r value the better the thermal performance of the insulation.

Cepe certified energy consultants experienced low rates same day turnaround. Email title24 energy ca gov or call toll free in california. 800 772 3300 or outside california. 2019 california energy code changes.

Insulation level are specified by r value. While federal and in some cases state guidelines for insulation levels are merely recommendations the local building code is the true authority over insulation requirements. The table below shows what levels of insulation are cost effective for different climates and locations in the home. High performance attics prescriptive attic options climate zone hvac duct insulation leakage radiant barrier r 30 at ceiling attic floor r 38 at ceiling attic floor fiberglass below roof deck between rafters air handler ducts in the attic option b 1 r 6 or r 8 depending on cz all with 5 leakage 2 3.

Having the correct amount of attic insulation can help you maintain a comfortable temperature throughout your home and help save money on your energy bills plus prevent major issues like ice dams in the winter. Or 0 071 maximum u factor. Modifications to the indoor air quality requirements of american society of heating refrigerating.