Batt Insulation Lay In Attic

Measure the depth of the existing insulation between the ceiling joists in the attic.

Batt insulation lay in attic.

Install batting between the attic s floor joists. This video will show how to insulate an attic step by step with precut batts and rolls. Roll insulation is best for floors ceilings and roofs with a long joist or rafter bays and for tall walls. Batt insulation is available at home centers and lumberyards.

Loose fill or batt the common term for blanket insulation. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. The batting material must be faced and at least as thick as the joists are wide so the batting is nearly flush with the top of the joists. Kraft faced or paper faced insulation comes in batts and long rolls.

At the perimeter of the attic lay the insulation up to the roof rafters but keep it away from plywood roof sheathing. The problem with batts however is that they don t work well because they don t fill the space well. While fiberglass batt insulation is often done with the help of a professional you can also install this insulation yourself if you have the time and desire. For diy attic insulation you ve got two choices.

Lay the batts across the ceiling joists covering the existing insulation. Batt insulation take time to read this column. Cotton batts though are cool because they re made of recycled blue jeans. Continue laying down the insulation making sure the batts are pressed tightly together at all edge and end joints.

All kraft faced insulation is easy to cut with a sharp utility knife or insulation knife. Multiply the depth in inches by 3 14 to determine the r value of the existing insulation. Blown in insulation requires a professional. Batt insulation on the other hand consists of blankets or rolls of insulation made from fiberglass or cotton which is cut to fit into the floor of the attic.

For the best performance an insulation material needs to fill the whole space with no gaps voids compression or incompletely filled areas. Before choosing blown vs. The batts are precut to fit into cavities on standard 8 foot high walls.