Proper Insulation Roof Ceiling

There s also high density insulation for ceilings and attics.

Proper insulation roof ceiling.

If you don t have an attic however there is. A vent baffle should be installed between the insulation and the roof decking to maintain the ventilation channel. Insulation puts the money back in your pocket by protecting your home from the elements and lowering energy costs. But there are small improvements many homeowners overlook that can make a huge difference.

It creates a breeding ground for mold and mildew and ruins the air trapping pockets that block heat flow. See the department of energy s doe ranges for recommended levels of insulation below. 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. 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.

You put a lot into keeping your home running. When tom insulates a cathedral ceiling or a finished attic he also turns to foam. 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. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.

Get the most out of your home with proper roof insulation. Proper insulation is the best way to maximize comfort and minimize energy bills. 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. R value is a measure of insulation s ability to resist heat traveling through it.

Unvented hot roof design cathedral ceilings are also an option. How to put insulation in a ceiling before drywall. The hot roof design allows more insulation to be installed in the roof cavity as the need for a vent space is eliminated. 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.

For example cathedral ceilings built with 2x12 rafters have space for standard 10 inch batts r 30 and ventilation. The table below shows what levels of insulation are cost effective for different climates and locations in the home. The higher the r value the better the thermal performance of the insulation. Insulation level are specified by r value.

But if you re serious about energy savings you can buy better performing products. Sprayed against the underside of the roof deck it seals against air movement eliminating the need for a vapor barrier or ventilation. Some provide r 15 for 2 4 walls and r 21 for 2 6 walls.