Feb 14, 2014

The Real Deal With Vaulted & Cathedral Ceiling Insulation

Vaulted, or also known as cathedral ceilings, offer a very aesthetically pleasing appearance adding a luxury of height, comfort, and light to your home, but they can also pose some interesting challenges when it comes to insulation. Since you know that heat rises, vaulted ceilings in your home cause you to heat space that you can’t really feel; unless you have ceiling fans pushing that warm air back down. Here are some things to keep top of mind when it comes to vaulted or cathedral ceiling insulation.

New Windows St. Paul (2)

The Importance Of Moisture Control

In very cold climates, like ours here in Minnesota & Wisconsin, having a poorly insulated roof can cause the common phenomenon known as ice damming. The process of thawing and refreezing produces a thick layer of ice at the eaves and then water backs up on the roof and eventually leaks into your home. Not controlling the moisture in your ceiling can lead to a variety of problems including, but not limited to, mold and rotting. You want to have an air space beneath the roof deck with air vents at the eaves and ridge to carry away moisture. Watch the humidity levels in your home as the days get colder you want less humidity and moisture every time your furnace adjusts humidity levels down in your attic or crawl spaces.

Air Sealing & Insulating A Vaulted Ceiling

Closed cell spray foam is the best choice for vaulted ceilings because it does not absorb water and is currently the best air sealing on the method on the market. Spray foam insulation not only helps insulate cathedral ceilings, but it also strengthens whatever material it adheres to.  Spray foam has an amazing R-value of R-6.5 per inch, creating a very well insulated space. You can also use cellulose, Rockwool, fiberglass blankets, blown fiberglass, denim blankets and Basa Batts, just keep in mind that some air and moisture will be able to pass through these types of insulation.

Cathedral Ceiling Ventilation

You want to have optimal ventilation in your cathedral ceiling allowing air flow space between the insulation and the roof deck. Depending on where you live, it is recommended to leave some practical space for ventilation and that amount of space has been the subject of debate for years with some codes stating it requires a minimum of 1” and some say ½” will suffice. The best form of ventilation is utilizing a combination of eave, also known as soffit vents, and ridge vents for continuous ventilation allowing movement of air and minimizing moisture problems, which will in turn prolong your roof life.

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Home Insulation Reviews:

"The crew did a great job - and cleaned up every day! Love that. Very courteous and explained everything."

Janis H.
Hammond, WI
May 21, 2022

"On two occasions, Randall was at my house involving insulation issues.  He knows the business, is easy to work with, and I think he is a great asset to your company."

Mary W.
Maple Grove, MN
May 2, 2022

"They were contracted to insulate the garage ceiling which they did in a two-step process with both foam and blown-in insulation. They then returned to put up new gutters facia and soffits in a two day process that was professional, neat , and used materials economically."

Stephen G.
MInneapolis, MN
April 28, 2022

"Excellent and efficient work. Thankful that the Lindus crew was accommodating to our needs as homeowners and for their communication throughout."

Bloomington, MN
April 19, 2022

"Had Lindus blow in foam insulation into attic, what a difference it’s made! The house is noticeably warmer in the winter and my furnace is not running nearly as much as before. I know it will also help keep the house cool in the summer heat. They also installed some new windows and exterior trim. Everything turned out really well. Corey Hessler was fantastic in dealing with from start to finish and answered all my questions. Everyone I dealt with from Lindus, especially Corey, were kind and professional. In today’s day and age you get what you pay for. Lindus really delivers!"

Robert M.
Cottage Grove, MN
March 25, 2022

“I want to thank and commend Andy Lindus and his crew for a fantastic job.  I recently had my attic completely foam insulated and had some new windows installed.  Everything turned out fantastic.  I am very pleased.  I do have to note that the foam insulation made an immediate difference in keeping my house nice and warm this winter which helps on the heating bills.  Thanks again!”

Rob L.
Cottage Grove, MN
March 19, 2022
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