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Showing posts from December, 2013

Insulating walls with Roxul

What is Rockwool? Roxul Stone Wool is an insulation product that comes in the form of batts. It's composed of mineral fibers and it's considered to be green, fire-retardant, and very good for sound control. Like cellulose fiber, it insulates airborne noise better than fiberglass.

In the USA, you can buy Roxul at Lowes and some Home Depot locations. In Canada, you can buy Roxul in Saskatchewan at Rona Corporation in Prince Albert or at Econo Lumber.

Roxul comes in packages of pre-cut sizes that fit the dimensions of your wall cavities (for example, use these 15 1/4-inch batts for wall studs that are 16 inches apart). Be sure to select the right size for the job – not just the width, but the depth as well (wall versus ceiling or attic).
Rockwool is great in walls This video from Roxul demonstrates how to install Roxul in a wall. As you can see, it cuts easily with a bread knife and can be custom fit around electrical lines, plumbing, and wall outlets. It holds a snug fit betwee…

Noisy restaurants

Have you ever gone out to eat and found yourself shouting to be heard? Did you ever have your "night out for dinner" ruined because it was so noisy you couldn't hear everyone at your table?

A lot of these problems could be solved if restaurant owners would add sound panels to their ceilings. It's not that expensive and it's not that hard. But most of them don't do it.

Maybe some restaurant owners think it seems more "lively" if it's deafeningly loud. And maybe others want to turn the tables over faster – because their customers often say "let's get out of here and go someplace where we can hear each other." But I've seen many people pass on a restaurant that's unbearably loud. Noise is actually bad for business.

Let's take a look at one restauranteur who did "the right thing." Thanks to Acoustical Solutions for posting it!

The benefits of blown-in cellulose

You don't have to demolish your walls to add insulation to your home.  Many people have asked me about affordable techniques for adding some degree of soundproofing to existing construction. And if you live in a home or an apartment with hollow walls, you might want to blow some insulation into them.

At the very least, it will reduce the amplifying effect -- that's because when you have drywall nailed on top of hollow studs, it behaves acoustically like the head of a giant drum. And this problem plagues millions of American homes.

You can remedy this situation. You can add insulation without even removing the walls by getting a blower and some cellulose insulation, drilling some round holes into your existing drywall, inserting the pressure nozzle into the open space, and blowing the insulation between each stud.

Cellulose is the best loose material for blow-in insulation.  Usually you'll find two options for blown-in insulation: fiberglass, and cellulose fiber. From my o…