Proper Insulation Roof Ceiling

Unvented hot roof design cathedral ceilings are also an option.

Proper insulation roof ceiling.

How to put insulation in a ceiling before drywall. It creates a breeding ground for mold and mildew and ruins the air trapping pockets that block heat flow. The most proper insulation level to use on ceilings are r 30 batts that are as thick as r 25 batts but fit into a 2x10 framing. The hot roof design allows more insulation to be installed in the roof cavity as the need for a vent space is eliminated.

You put a lot into keeping your home running. If you have an attic there are quick ways to insulate the ceiling from above after drywalling it. Insulation level are specified by r value. If you don t have an attic however there is.

Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces. A vent baffle should be installed between the insulation and the roof decking to maintain the ventilation channel. Proper insulation is the best way to maximize comfort and minimize energy bills. But there are small improvements many homeowners overlook that can make a huge difference.

Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. But if you re serious about energy savings you can buy better performing products. 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. There s also high density insulation for ceilings and attics.

The higher the r value the better the thermal performance of the insulation. R value is a measure of insulation s ability to resist heat traveling through it. Sprayed against the underside of the roof deck it seals against air movement eliminating the need for a vapor barrier or ventilation. The table below shows what levels of insulation are cost effective for different climates and locations in the home.

Some provide r 15 for 2 4 walls and r 21 for 2 6 walls. Look for water stains on the roof sheathing or damp or moldy spots on attic joists and existing insulation as a clue to where leaks might be. High density types of fiberglass insulation with more fibers and air spaces per square inch offer r values of up to 4 25 per inch. For example cathedral ceilings built with 2x12 rafters have space for standard 10 inch batts r 30 and ventilation.

Water is insulation s enemy. Get the most out of your home with proper roof insulation. Insulation puts the money back in your pocket by protecting your home from the elements and lowering energy costs.