Technical Specifications

11 Hawthorn Parkway
Vernon Hills, IL 60061
Technical Data Bulletin
WATERTITE
™
Polyurethane Sealant
For Concrete & Masonry
Description
WATERTITE
®
Polyurethane Sealant a high performance, low modulus, one component, moisture
curing, modified polyurethane joint sealant. It is specifically used for filling deep cracks and holes,
sealing dynamically moving joints, such as expansion and control joints, precise concrete panel joints,
tiltup panel joint, curtain wall joints and perimeter caulking to windows, doors and panels.
Suitable Substrates:
Concrete block, cast-in-place concrete, stucco, tilt-up, exposed aggregate, slump block
Suitable Uses:
Basement & cellar walls, expansion and control joints, curtain wall joints, windows, doors, panels, radon mitigation,
bedding of mullions and frames, fountains, reflecting pools, planters, canals, retaining walls, privacy fences.
Features:
 Flexible joint filler; Remains flexible over time
 Fills deep cracks and holes
 Excellent adhesion – does not diminish over product life
 Seals and waterproofs
Installation
Joint Design:
May be used in any vertical or horizontal joint design in accordance with accepted architectural/engineering practice. Joint
width should be 4 times anticipated movement, but not less than ¼ inch (6.4mm) wide.
Joint Dimensions:
For joints ¼ inch (6.4mm) to ½ inch (12.7mm) wide, the width to depth ratio should be equal. Joints ½ inch (12.7mm)
wide or greater should have a sealant depth of ½ (12.7mm). Minimum joint size is ¼ inch by ¼ inch (6.4mm by 6.4mm).
Surface Preparation:
For good adhesion, the joint interface must be free from dust, dirt, oil and loose particles. The joint must be sound, clean
and dry. Depending upon the substrates, or presence of release agents, masonry waterproofing, dust loose mortar or
laitance, architectural paints or finishes, the joint surface may require a thorough wire brushing, grinding, sandblasting,
solvent washing and/or primer.
Use Directions:
Insert WATERTITE Polyurethane Sealant tube in a conventional caulk gun. Cut the plastic tip on an angle to desired
opening size. Puncture foil inside plastic tip. Force sealant tightly into cracks. Apply to cracks ½ inch wide or less. Cracks
over ¼” in depth must be filled with backing material or filler before applying WATERTITE Polyurethane Sealant. Use
a putty knife to level and smooth surface.
Tooling and Cleaning:
Tooling is recommended immediately after application to insure firm contact with the joint interface. Dry tooling is
preferred. To clean-up, use Xylene or paint thinner while sealant is still uncured.
LIMITATIONS:
Do not apply over damp or contaminated surfaces. Use with adequate ventilation.