COMFORT BASE
Insulating underlayment
PRODUCT DESCRIPTION
Comfort Base is a high-density fiberboard with a 1/4" deep 4" x 4" grid cut
into the board on one side only.
USES, APPLICATIONS
Comfort Base is recommended for application over concrete slabs or concrete floors as an
underlayment for carpet or other floor coverings.
SIZES (all nominal)
Thickness |
Sizes |
Weight
lbs./sq.ft. |
1/2" |
4"x4" |
1.2 |
SPECIFICATIONS
| Density, lb./ft.3..................................................... |
26-28 |
|
| Tensile parallel to surface,
psi.......................... |
450-700 |
|
| Transverse M.O.R...psi
(min.)........................... |
750-1000 |
|
| Hardness lbs (min.) (Janka
Ball)...................... |
230 |
|
| Water absorption by vol. (max) |
|
|
|
(2 hrs.
immers.)................................................ |
5% |
|
|
(24 hrs.
immers.).............................................. |
15% |
|
| Expansion from 50% - 90% rel. hum.
(max.)... |
0.25 |
|
| Noise Reduction
Coefficient............................. |
0.20 |
|
| Tensile parallel to surface,
psi.......................... |
450-700 |
|
| Apparent M.O.R..,
psi........................................ |
750-1000 |
|
| Hardness lb. (Janka Ball) |
230 |
|
| R-value................................................................. |
1.2 |
|
| Flame
Spread.................................................... |
Class III (or C) |
|
(See Page 9)
GENERAL CONSTRUCTION DATA
Temperature and humidity conditions closely approximating those which will exist when
building is occupied shall be maintained before, during, and after the application of
panels.
Installation shall not be made when building is excessively cold,
hot, and/or damp. Precondition Comfort Base by separating panels and exposing to natural
environments humidity for not less than 24 hours. During installation, all panel edges
must be spaced 3/16" adjoining panels and 3/8" from all walls and partitions to
allow for expansion and contraction. On runs over 50', provide 1/2" expansion joint.
All panel joints must be staggered regardless of panel size. In all cases, either slab
or concrete floor, the concrete must be dry prior to attachment. Comfort Base is not
recommended for application in areas where moisture is present.
| NOTE: Bowing of panels away from the grid side
is normal prior to application. |
Installation for use with Carpet and Pad
ComfortBase may be installed with carpet and pad using either method listed below.
Floating Method (no adhesive)
- 1/2" thick by 1 1/2" wide wood nailers shall first be
nailed and/or glued to concrete at all locations where tackless strips are to be used.
- Lay panels in position, grid side down. Allow 48 hrs. prior to
installation of carpet and pad.
- Tackless strips are nailed to the top of wood nailers followed by the
installation of carpet and pad.
Adhesive Method
- 1/2" thick by 1 1/2" wide wood nailers shall first be
nailed and/or glued to concrete at all locations where tackless strips are to be used.
- Apply a 3/8" bead of APA approved sub-floor adhesive meeting APA
AFG-01 specification to the GRID SURFACE as shown in the"gluing Pattern" below.
- Apply adhesive 3/4" from edge around perimeter of ComfortBase
over and place adhesive side down to concrete.
- Turn ComfortBase over and place adhesive side down to concrete.
- Apply pressure over the entire surface to assure the ComfortBase is
set.
- After ComfortBase is set in place, it is recommended to stay off the
material for 24-28 hours to allow the proper setting up of the decking adhesive.
- Tackless strips are nailed to the top of wood nailers, followed by
the installation of carpet and pad.
Installation for use with Adhered Carpets (Not
recommended for Rubber or Foam Backed Carpets or Carpet Tiles)
Follow 2, 3, 4, 5 & 6 of "Installation for
use with Carpet and Pad."
After a minimum of 48 hours, fill 3/16" spacing
between panels with a quality interior floor patch.
Apply carpet adhesive and carpet to Comfort Base
following manufacturer's instructions.
Installation for use with vinyl, Wood Parquet, Wood
Strip Flooring and Ceramic Tile
Follow 2, 3, 4, 5, and 6 of "Installation for
use with Carpet and Pad"
Apply 4' x 4' (max.) sheets of 3/8" or greater
thickness of plywood of suitable underlayment grade (lauan or equal) over ComfortBase.
Attach plywood to ComfortBase, assuring that plywood
joists do not coincide with ComfortBase joists, by trowling a subfloor adhesive meeting
APA AFG-01 specification over ComfortBase in a 100% coverage fashion. Place plywood into
adhesive and mechanically fasten the four corners and center of 4' x 4' panels through
ComfortBase and into concrete subfloor, a minimum of 1". Mechanically fasten plywood
additionally in any areas not lying down flat into adhesive.
After plywood is set in place, it is recommended to
stay off the material for 24-28 hours to allow the proper setting up of the construction
adhesive.
Install above floor coverings according to
manufacturer's instructions.
*NOTE: Must be suitable thickness and grade
acceptable to finish flooring manufacturer.
ACOUSTIC TEST DATA
INR + 19 IIC 70. Construction as tested: ComfortBase
applied with adhesive to 5" concrete slab and covered with 32 oz. hair felt pad and
24 oz. carpet
Kodaras Acoustical Lab.
Test No. L - 188-1-64
CODES/CERTIFICATION
BOCA - Research Report No. 84-65
ICBO - Report No. 1016
SBCC - Report No. 9590
F.H.A. - Materials Release No. 930c
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