Installation Instructions
Congoleum QuikStik UnderFlor
The fastest, most cost effective oating oor installation system 
- just roll it out, peel back the release liner and start installing the 
oor. Install under DuraCeramic Origins, DuraCeramic Dimensions 
and Ovations.
• No messy adhesive to spread
• No trowel or 100 lb. roller needed
• No waiting for glue to tack up
• Installs easily on top of a variety of suboors/conditions
• No adhesive waste
• Easy to reposition product and make repairs
• Allows for “dry tting” when making cuts
• Moisture and alkali resistant
 • Install over concrete with vapor emissions up to 5 lbs. or 80% RH 
 • Great for basements and new construction
Roll Sizes
Large Roll Order Code: QSUFL
Contents: 1 roll 56.25" wide x 60 lin. ft. (281.25 sq ft) plus 1 roll tape 
(1.89" x 60 lin. ft.)
Small Roll Order Code: QSUSC
Contents: 1 roll 56.25" wide x 30 lineal feet (140.63 sq. ft.) plus 1 
roll tape (1.89" x 30 lin. ft.)
Recommended Use
• Residential applications on all grade levels
• Interior use in dry, heated areas
• Do not install over ramps, in showers or other wet areas
General Information
• Always ensure QuikStik Underor is tightly rolled around a tube 
with the release liner out for storing and transporting. Any unused 
portion of the roll must be tightly secured around the tube.
• Do not distort QuikStik Underor.
• Condition the room and all ooring materials at a constant tem-
perature between 65°F (18°C) and 85°F (29°C) for 48 hours prior 
to, during and 48 hours after installation.
• All QuikStik Underor and nished ooring must be installed with 
a 1/8" to 1/4" space around the perimeter of the room to allow for 
expansion and contraction of the ooring system and suboor.
QuikStik Underflor Installation
• Thoroughly sweep the oor.
• Determine the appropriate seam location and direction of the 
underlayment (based on the ooring selection).
For DuraCeramic Dimensions always install UnderFlor with seams 
running perpendicular to the long dimension of the tile ooring  
(Fig. 5). Install tiles with staggered end joints positioned at least 
4" away from the seams in the Congoleum UnderFlor. 
Unroll the rst sheet and trim it to t allowing a 1/4" space between 
the edge of the sheet and the wall. 
Unroll the second sheet and position it with the seam edge butted 
lightly up to the rst sheet. If necessary, to adjust the seam location  
to ensure proper placement, overlap the sheets and double-cut a 
new seam in the desired location. Use a straightedge and utility knife 
to cut the seam.
Tape the sheets together with 2" wide clear packaging tape or other 
thin single face plastic tape available through ofce supply stores 
and most home centers. Apply the tape, centered directly over the 
top of the seam edges. Roll the tape with a steel seam roller.
Suitable Packaging Tapes Include:
• Scotch
®
 3850 Packing Tape
• Duck
™
 Tape Standard Packaging Tape
• Shurtape
®
 HP Series
Do not use masking tape, ber reinforced tape, duct tape or other 
thick tapes that might telegraph through the nished ooring. 
Install nished ooring immediately after installing Congoleum  
UnderFlor.
Installing DuraCeramic Origins, DuraCeramic Dimensions  
and Ovations over Congoleum UnderFlor
Follow installation instructions for the nished ooring being installed. 
Install nished ooring with Congoleum DS100 DuraSet Adhesive  
using the recommended trowel notch size. Do not apply excess 
adhesive. Allow adhesive to dry completely to a tack prior to ooring 
installation. Slight growth (buckles) in the UnderFlor may occur 
immediately after adhesive application. This is normal and will not 
affect the nished ooring installation. Install nished ooring allow-
ing a 1/8" to 1/4" space around the entire perimeter. If necessary 
to adjust or remove a tile, use a heat gun to warm it up rst. Roll 
nished ooring on completion of the installation. 
All nish trim and transition moldings must be installed so they do  
not bind or restrict the nished ooring from moving when expansion 
and contraction occurs during seasonal changes. Fasten the trim to 
the wall not to the suboor. 
Do not drive fasteners into the oor or underlayment.
Seal all areas that may be exposed to surface spills, i.e. tubs, toilet 
and showers with a silicone caulking.
Fig. 5 – Install UnderFlor with seams 
perpendicular to the long dimension of the 
DuraCeramic Dimensions flooring. 
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