Decoding Upholstery Foam

One of the best ways to make your project lookwide seat = 30 inch, 18 inch seat board = 19 inch
and feel great is knowing about foam. Pick thefoam and so on. This way you will have a nice
wrong thing and your may feel you are sitting ontight seat. Always rap our foam in bonded dacron
a board or in a bucket. Chose the right foam, andor fiber batting. I'll make it even simpler and let
you will add years to you comfort and the life ofwe know what destiny/firmness I would consider
your furniture. Easily 25% of all furniture repairs Ifor my projects using the above information.
see deal with bad padding. The point is start withSeat: Dining room chairs 1.5 to 3 inch foam 29/52
good foam and you won't be sorry. AlthoughChair, Sofa, and love seat 4 to 5 inch 25/35,
some might not want to be believe this, butChair, Sofa, and love seat 6 to 8 inches go 22
cushion fill is one of the easiest things to30.Note: These numbers are industry guides not
understand in upholstery. There are only 2 simplerules. So there is some variation in numbers like
things you should know.28/53 instead of 29/52 but basically the same
Foam has 2 basic element Density and Firmness.thing. Just a mill change. Keep in mind we want
Density or weight which is the first element andthe highest density you can get for the firmness
this tell you how much material goes into thewe chose. In choosing high-density we add years
product i.e. the more it weighs the higher theto your comfort.Firm low-density products may
density and the higher the density the higher thego as little as a few weeks or months until we
weight. The second element tells you the firmnessstart to see or feel it losing it's comfort and
of the product. which is how much weight it takesshape. Hence most warranties do not cover
to compress the foam 1/3. That is a 1 cubic foot"foam losing its shape or getting soft."
block of foam will compress 1/3 when a weightA Key Take Away: Padding that is low in weight,
equal to it firmness number is placed on thealthough firm, will not last or support as well as a
figure. These elements are expressed in numbershigh density softer padding. example: 25/35 will
as Density / Firmness. Here is an example of twolast years longer, in my real world expernce, then
15/15 and 29/52.Since we know what each set of10/35 for seats. It is literally days or months
numbers represents, Density / Firmness (or wecompared to years or decades. I upholstered a
can also say Weight / Firmness), we can figurelarge set of Dr office waiting room chairs when I
out the destiny and firmness of our foam.15/30 =was an apprentice. We replaced the cover and
1.5 pounds of padding per cubic foot will take 30the foam with 29/52 2 inch. Some 15 years later,
pounds of weight to compress the block 33% orI reupholstered the same chairs with new fabric
1/3. And 29/52 = 2.9 pounds per cubic foot and itbut did not need to replace the foam. 15 years
will take 52 pounds of weight to compress thislater it was still going strong. The Dr office may
block 1/3. See not so hard as some might leadhave saved $800.00 by having us install the right
you to think. Now what does this mean to youproduct for the job. This knowledge is way we
and your furniture?can warranty quality seat cushions for 5 years.
Here are some simple rules to consider to helpKnowing the numbers of density to firmness is
guide us: For seats the thicker the padding thethe key. This is what we aren't supposed to
lower compression weight we want. For seats theunderstand. Density is the key to foam comfort
thinner the foam the higher the compressionand life.
weight we want. For seats we want a highSimply put, for seats, the higher the density the
density foam no less then 2.2 For backs we wantlonger the life. What if we want for a back? Then
a density no higher then 1.8 Make all our foam 1/2here is a little guide we can reference. Backs: Firm
inch bigger all the way around then your cover orback 18/18 Softback 15/15.
pattern i.e. 4 inch boxing = 5 inch foam, 29 inch