TDS

OSI® QUA
Window, Door & Siding Sealant
Page 4 of 5
Revision: August 14, 2018
Supersedes: November 14, 2012
Ref. #: 445275
Application: Insert cartridge into caulking gun, apply moderate pressure in order to break the Break-A-Way Seal™ inside the nozzle. Cut the tip
off the cartridge at a 45° angle to desired bead size (3/8” size bead is recommended). Apply sealant between 20°F (-7°C) and 100°F (38°C).
Apply sealant with steady pressure, forcing the sealant into the joint making sure the sealant "wets" the side surfaces of the joint. If the depth of
the joint exceeds 3/8” (9.5 mm) the use of a backer rod is recommended. OSI QUAD will not pop or splatter and will dispense smoothly on extrusion
from the cartridge. Tooling of the sealant is not necessary or recommended. Always apply sealant in a bead form. Do not tool, feather or smear
sealant. If masking tape is used along the sides of the joint to prevent surface smearing, ensure the tape is removed immediately by pulling the
tape away.
In general, the ideal conditions for using sealants in exterior applications are during spring and fall seasons when outside temperatures are
moderate. Maximum performance is achieved when adjoining substrates are at their equilibrium in terms of expansion/ contraction characteristics.
Appling sealants when substrates are maximum expansion or contraction places extreme strain on the sealants ability to maintain a proper seal
at all times during extreme weather changes.
Tips on Terminating Sealant Beads:
Terminating Beads at the End of a Joint: When terminating a bead at the end of a joint, first release dispensing gun pressure to prevent
run-on by pressing the release trigger, then use a twist and pinch motion at a sharp angle to sever the bead. In the event of excess string
formation, guide onto existing bead. DO NOT pull or smear the bead onto adjacent surfaces like cladding or trim materials. DO NOT
TOOL on prefinished cladding or trim materials.
Terminating Beads that will be Continued: When terminating a bead that is to be continued (i.e. at the end of a tube), first release
dispensing gun pressure to prevent run-on by pressing the release trigger. Next, pinch-off the bead by pressing the nozzle onto the joint
surface to cut-off the bead. DO NOT smear bead onto adjacent surfaces. This action will create a slight smear inside the joint. Cover this
smear with the start of the next bead
DO NOT TOOL: Do not tool sealant after applying. The sealant when applied properly will cure to a concave look. Do not smear or feather
sealant on prefinished colored cladding materials (i.e. siding, trim) as this will reduce any sealants ability to withstand UV exposure and joint
movement, causing premature joint failure and color fading. If smearing/feathering of the sealant occurs, painting over the smeared areas will be
the only corrective resolution.
DO NOT USE AS NAIL HOLE FILLER: Do not use as a nail hole filler or in touch-up applications on prefinished siding and trim materials.
Doing so can result in premature color fading and an unsightly appearance. Follow prefinished cladding manufacturer’s instructions for nail hole
filling.
BUTT / FIELD JOINT APPLICATIONS: Not recommended for field joint/butt joint applications on pre-finished siding and trim materials. Sealant
is not recommended for joints less than ¼’ wide and ¼” in depth. The reason being that joints less than ¼” are too small to accommodate a
sufficient amount of sealant in the joint to warrant long term durability. Joints smaller than ¼” will become “maintenance” situations that need to
be inspected regularly for premature failure. If the sealant is showing signs of degradation, remove sealant and apply fresh sealant to the joint.
What is important to know is that all sealants will require maintenance and sometimes replacement, because of the effects of aging, insufficient
sealant used, or because of poor joint design. When using prefinished claddings (i.e. siding and trim) please refer to manufacturer’s instructions
for proper installation.
CONTROL JOINT APPLICATIONS: Maximum joint width should not exceed ⅜". For control joints apply sealant without tooling. During the
curing time the sealant will form a concave shape (see Fig. 2) due to material shrinkage. Tooling is not recommended or necessary. Care must
be taken to NOT allow or smear the sealant beyond the joint edges. Masking tape can be used to ensure a clean application and prevent
smearing sealant on adjacent surfaces
COMMERICAL APPLICATIONS: For all commercial applications or applications not mentioned herein contact Henkel Technical support for
review of intended use. Commercial applications may require a different type of sealant to be used
PAINTABILITY: Sealant is paintable when fully cured. Full cure may take 7-14 days or longer depending on ambient conditions and volume of
sealant used. Latex paint is recommended. If using oil based/alkyd paint, a latex primer should be used first. It is the responsibility of the
applicator to conduct on-site testing to determine compatibility and adhesion. It is always recommended to use a color matched sealant where
available. (NOTE: Paints are more rigid than sealants and may crack, wrinkle or lose adhesion during sealant movement in extreme conditions).
Visit OSITough.com for a complete color match listing.
Clean-up: Clean tools and uncured sealant residue immediately with mineral spirits or paint thinner following solvent manufacturers
precautions. Cured sealant must be carefully cut away with a sharp-edged tool and may damage the surface. NOTE: Use of solvents may
damage prefinished siding and trim materials. Always test a small area before proceeding. Painting affected areas may be only remedy.
NOT DAMAGED BY FREEZING. Store away from heat, flame and spark in a cool, dry, well-ventilated area. Storing product in too hot or too
cold of conditions will considerably reduce Shelf Life of unopened containers. Use an approved hazardous waste facility for disposal.
DIRECTIONS
STORAGE & DISPOSAL