This is one of the most cost effective areas to add insulation.
Roxul attic insulation.
Once you ve decided which type is best for you examine the material options and prices to home in on the right product.
I am in zone 4 right on the edge of zone 5 in long island ny.
I ve read that i need to use a vapor barrier but i ve also read that vapor barriers can cause houses to be moldy or can cause rot inside the walls because the walls cannot dry out properly.
I am doing a complete renovation of my house right now and i ve chosen to insulate with roxul comfort batts.
Achieving greater r values in exterior walls in exterior walls add insulating sheathing to achieve a greater r value in your wall system.
This non combustible lightweight product absorbs outside noise thereby making your living experience more comfortable.
Both can be added to uninsulated attics or layered over existing material.
Like cellulose insulation blown mineral wool can be installed in netted stud bays or spray applied with adhesive into bare stud cavities.
Roxul safe is a lightweight semi rigid stone wool insulation that provides superior fire resistance and sound control.
Roxul safe is ul and intertek approved as a forming material for numerous firestop systems.
The higher the r value the better the thermal performance of the insulation.
For diy attic insulation you ve got two choices.
Rockwool comfortbatt is a semi rigid stone wool batt rockwool comfortbatt is a semi rigid stone wool batt insulation for exterior wood and steel stud applications in both new construction and renovations.
It is dense yet porous and reduces the movement of heat or cold plus it absorbs sound waves and vibrations.
American rockwool blown in insulation is produced from recycled blast furnace slag and trap rock which is a fine grained igneous rock.
Roxul acoustic insulation is stone wool insulation that absorbs sound waves is fire resistant and is manufactured by a company called roxul.
Rockwool insulation formerly roxul roxul rockwool mineral wool batt offers an excellent insulation to walls and floors where acoustical performance and fire resistance are primary concerns.
It features a unique flexible edge designed to compress as the batt is inserted then spring back expanding the batt against the frame studs to give a complete fill.