Attic Insulation No Deep Enough

First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation.

Attic insulation no deep enough.

Because the simplest and cheapest way to insulate an attic is to add material to the floor. Department of energy it s recommended that attics have an r 38 to r 49 or about 12 to 15 of fiberglass or cellulose insulation. Bust out the existing slab and excavate deep enough to install at least 4 inches of inch to 1 inch washed gravel or river rock. Warm spaces have less condensation risk than colder space so when you add insulation to the attic floor you re intentionally blocking some of that heat from keeping the attic warm.

That said air resistance and interference such as vent grates reduces the area of true ventilation. In an unfinished attic the process is simple. I might be minimized if i only screw pieces of 2x4s from place to place just to support the drywalls. Generally speaking you need a ratio of 1 300 where for every 300 square feet of ceiling space you need 1 square foot of attic ventilation.

In winter but it is all bearable. Our house from 1900 has no insulation. It is important that the insulation be evenly distributed with no low spots. Insulation levels are specified by r value.

Basically a traditional farm house type. Plan to pull up the flooring and layer new insulation on top of the old. Use unfaced insulation when adding more insulation to an attic that already has some insulation laying the rolls or batts at right angles to the floor joists. In other words the entire vent opening doesn t count as vented space.

This allows a lot of heat up to the attic. We do wear hats etc. One obvious solution would be to screw lengths of wood along the rafters to increase the depth. Pick up the blower and insulation cellulose blown in ceiling insulation is a good choice for diyers.

Sometimes there is enough insulation in the middle of the attic and very little along the eaves. Many homes are leaky and have insufficient insulation in the attic. Mark the desired level on different roof trusses around the attic before you start photo 4. If your attic insulation covers your joists and is distributed evenly you probably have enough.

For example 2x4s would do but that is a lot of extra work. According to the u s. When you re blowing insulation it can get dusty and hard to see whether you ve got it deep enough around the entire attic. Your attic should have a certain amount of insulation in it and the recommended level of insulation for your attic is dependent on where you live.

To see how to add insulation out to the eaves see installing rafter vents.