Masonry Magazine February 1964 Page. 14
INSULATION
MASONRY
Zanoli
(all costs quoted are approximate; they may be a little under or over, depending on your area)
Cost of insulating this wall; about 10¢ per sq. ft., installed.
Simply pour water-repellent Zonolite* Masonry Fill Insulation into the 2½" cavity of this 10" brick cavity wall.
That's all the wall needs to stay warm and dry on the inside. If you don't want to finish the interior, you don't have to.
One man can easily insulate 29 square feet of wall a minute with Zonolite Masonry Fill Insulation. To install it, he just opens the bag and pours. (Either directly into the wall or into a hopper that can easily be knocked together on the job.) He doesn't need to know any new techniques. If he's smart enough to pour coffee into a cup, he's smart enough to install Zonolite Masonry Fill Insulation.
This insulation cuts heat transmission through the walls up to 50% or more. Cuts the cost of your heating and cooling equipment, too, by allowing you to use smaller units.
The material is water repellent. In tests at the Structural Clay Products Research Foundation, Geneva, III., it was installed in a cavity wall purposely built to leak. The wall was subjected to 144 hours of rain-5" to 81½" per hour-at winds up to 75 m.p.h. No water came through the wall, or penetrated the insulation.
Another nice thing about Zonolite Masonry Fill Insulation; when you pour it in, it doesn't get hung up on mortar or reinforcement. Just fills the wall right up and stays there without settling, saving on heating and air conditioning bills for the life of the building. For complete information, read our Bulletin MF83. Write to Zonolite, 135 S. La Salle Street, Chicago 3, Illinois.
ZONOLITE
GRACE ZONOLITE DIVISION
W.R.GRACE & CO.
18 SO LA SALLE ST, CHICASO, KL
Reg. trade mark of Zonolite Division, W. R. Grace Co.
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MASONRY February, 1