Cathedral ceiling insulation

While many people think they look nice, providing insulation can sometimes be a challenge due to the extra space between the ceiling and the floor. Insulate a cathedral ceiling by ensuring there is no opportunity for drafts to get into the room. Solve moisture and rot problems in insulated cathedral ceilings with closed-cell foam ceiling insulation.

Foil-faced iso-board can be cost-effective insulation for finished attics and cathedral ceilings. A traditional method involves putting insulation into your cavity, leaving a small area at the top to allow air circulation. In those days, most builders stuffed cathedral ceiling rafter bays with fiberglass batts. Once this happens, the water drips into your insulation or soaks into the roof sheathing. How do you add insulation to a cathedral ceiling?

What is the best way to vent and insulate a cathedral ceiling? How to vent a cathedral ceiling? Attic trusses typically have a sloping ceiling ( cathedral ) that poses a different insulating solution.

As you can see in the photo above and the 3D model below the attic trusses create a section of sloped ceiling and flat ceiling much like you’d get in a house with a cathedral ceiling. In a correctly insulated cathedral ceiling (using the tight fill, moisture elimination method), the high density of cellulose reduces moisture penetration to the point that no vapor retarder barrier is needed. As mentioned earlier, cellulose has a natural density that is usually two to four times that of fiberglass.

Tips for insulating a cathedral ceiling , take care to seal ceiling penetrations such as around light fixtures or ceiling-mounted hard-wired smoke detector. More moisture enters building cavities through these cuts in the ceiling (or wall) drywall than permeates through the drywall itself. This approach relies on a near-perfect air and vapor barrier on the house side of the ceiling cavity to keep moist household air and water vapor out of the roof cavity. Free 2-day Shipping On Millions of Items. Cathedral Ceiling Insulation When building a cathedral ceiling as a room renovation project or as the ceiling for an entire new home or cottage, it makes sense to start with the best solution possible if starting from scratch.

And I’ve heard about – from you and others – that when we’re applying insulation in a cathedral-ceiling situation, we have to provide for ventilation between the insulation batts – in a traditional fiberglass-batt insulation, we have to provide for ventilation between the insulation and the roof sheathing. Treat your cathedral ceiling just like a wall, with a different angle. Foam it Green spray foam bonds overhead.

Check out the Overhead Project video to get some tips and techniques to make this project easier. Sixteen-inch-deep wood I-joists insulated with dense-blown cellulose create a high-R cathedral ceiling. However, the high cost of the I-joists and the complicated ridge and eaves details associated with I-joists make this the author’s least favorite system. Bliss points out in the original QA on cathedral ceiling ventilation, the risk of forming a vapor barrier sandwich around fiberglass ceiling insulation (foil faced insulation above and poly vapor barrier below) is that any moisture entering the insulation will be trappe risking future mold or rot problems.

In a Cathedral Ceiling, several installation options are available for enhancing the energy efficiency of this type of structure. The rafters in cathedral ceilings are usually made of 2xft. Owens Corning EcoTouch high-density insulation products are designed specifically for these rafters. R-30C and R-38C are available in both kraft-faced and unfaced.

Cellulose insulation can be installed in your cathedral ceiling, but it can be a tricky installation. If your insulation contractor isn’t using wet applied cellulose, then they would have to staple a fine mesh screen to the underside of the roof trusses. They would then place the hose towards the top and fill in behind the mesh with cellulose. Adding insulation to a Cathedral Ceiling is an important step in ensuring comfort inside your structure, while also reducing radiant heat loss and saving money on energy bills.

Depending on your preference and application, EcoFoil Between Joist Insulationor standard EcoFoil Bubble Insulationcan be used in a cathedral ceiling. Synopsis: Cathedral ceilings provide a majestic crown for many a great room, but insulating them can be tricky. A poorly detailed cathedral ceiling can lead to energy losses and rotted roofing.

In this article, senior editor Martin Holladay describes eight ways to get a cathedral - ceiling roof to R-or better using both vented and unvented. Vented Ceiling – Across Rafters. Polyiso provides one of the highest R-values per inch of any rigid insulation (R-at inch). High-Performance Fiberglass Building Insulation Batts are intended for use in walls and cathedral ceilings where maximum thermal performance is desired and limited space is available. I used R-2 insulation.

It was a special order from home depot. Yoy never want to compress fiber glass becuase it drastically looses R-Value. I allmost went with foam to get more R-Value but I chose not to because of cost. Also, I wanted to do the insulating myself to save some money.

Roof Area Calculator for Cathedral Ceilings.