Every insulation product comes with an r value.
Roof or ceiling insulation.
Additionally insulation serves as a way to enhance sound proofing on the uppermost envelop of your house.
Below is a list of the 6 most commonly used residential ceiling insulation products.
The leading ceiling insulation products are aerolite fabufill isotherm knauf granric.
Insulation level are specified by r value.
The standard width for joists is 24 inches.
It helps resist moisture that can lead to mold or mildew and provides increased sound and thermal insulation.
R value is a measure of insulation s ability to resist heat traveling through it.
Similarly in hot weather conditions warm air will infiltrate into the living are attic temperatures may reach 140ºf 60ºc and more.
Purchase rolls or packages of insulation that will fit in the spaces between the ceiling joists.
Rolls are easy to transport and can be cut to the length you need.
The higher the r value the better the thermal performance of the insulation.
Image courtesy of d7 spray foam insulation houston tx.
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.
Set up a stepladder tall enough to work comfortably from.
Without high levels of attic or roof assembly insulation warm air will flow through the ceiling and roof to the outdoors in the winter.
A very energy efficient enclosure results.
Insulating in and around your roof attic space also prevents long term damage from moisture build up or ice damming which results from the warm air trying to escape through the apex of the roof but instead heating up the snow.
The table below shows what levels of insulation are cost effective for different climates and locations in the home.
Try a spray foam insulation kit to fill cavities gaps cracks expansion joints and other sources of air leaks.
Ceilings interior wood framed ceiling insulation rockwool stone wool insulation is an ideal material to be used in interior ceiling floor partitions where sound absorbency and fire resistance is required.
Depending on where you live and the part of your home you re insulating walls crawlspace attic etc you ll need a different r value.