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Tremco Vulkem 445SSL Neutral Base 1.5 Gallon Pail
Tremco Vulkem 445SSL is a field-tintable, semi-self-leveling, multi-component, moisture-curing polyurethane sealant for horizontal expansion joints, supplied as a Neutral Base in a 1.5 gal (5.7 L) pail. The kit requires a separate color pak (listed separately) to tint it to your choice of 70 standard colors.
- Meets ASTM C920 Type M, Grade P, Class 35, Use T, M, A, O and I (Class 2)
- +100% / -50% movement capability (ASTM C719); traffic rated and jet fuel resistant
- Can be applied to damp and green concrete; suitable for continuous immersion in non-chlorinated water
$77.51
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Tremco Vulkem 445SSL Neutral Base 1.5 Gallon Pail
Tremco Vulkem 445SSL is a field-tintable, semi-self-leveling, multi-component, moisture-curing polyurethane sealant that includes a tintable base and a choice of 70 standard colors. This listing is the neutral base: the 1.5 gal kit requires a separate color pak (pigment), mixed in per Tremco’s Technical Bulletin on Vulkem 445SSL until there are no color striations. It is intended for expansion joints in sidewalks, swimming pool decks, plazas, floors and other horizontal surfaces with slopes up to 6% (a 1 ft rise for every 16 ft run). It is traffic rated, pourable and jet fuel resistant, can be applied to damp and green concrete, will not outgas, and is suitable for continuous immersion in non-chlorinated water. It typically adheres to concrete and stone without primers; Tremco always recommends a mock-up or field adhesion test on the actual job materials. Do not apply it over contaminated surfaces or use it in immersed conditions that contain chlorinated water, and use with adequate ventilation.
Key Features
- Field-tintable to 70 standard colors with a separate color pak
- Semi-self-leveling; holds up to a 6% slope (ASTM C639)
- +100% / -50% movement capability (ASTM C719)
- Applies to damp concrete, and to green concrete 24 hr after the forms are removed
- Traffic rated and jet fuel resistant; will not outgas
Applications
- Expansion joints in sidewalks and plazas
- Swimming pool deck expansion joints
- Floor joints
- Horizontal joints with slopes up to 6%
Technical Specifications
| Property | Value |
|---|---|
| Type | Two component semi-self-leveling urethane sealant (neutral base; color pak sold separately) |
| Color | Neutral base, tinted to a choice of 70 standard colors or custom matched on request |
| Standards | ASTM C920, Type M, Grade P, Class 35, Use T, M, A, O and I (Class 2); CAN/CGSB 19.13-M87, MC-1-25-B-N |
| Coverage | 308 linear feet of joint per gal for 1/4 in x 1/4 in (6 mm x 6 mm) joints |
| Joint design | Width 4 times anticipated movement, not less than 1/4 in (6 mm); maximum sealant depth 1/2 in (13 mm) |
| Solids | 98% |
| Specific gravity | 1.32 |
| Rheological properties (ASTM C639) | Semi-self-leveling, levels moderately; holds up to 6% slope |
| Hardness, durometer A (ASTM C661) | 40 to 45 |
| Weight loss (ASTM C1246) | 3% |
| Skin time (ASTM C679) | 1.5 to 2 hr |
| Tack-free time, 73.4°F (23°C), 50% RH | Under 5 hr |
| Cure | Skin within 5 hr at 75 °F (23.9 °C), 50% RH; then about 1/16 in (1.6 mm) depth per day |
| Adhesion to concrete (ASTM C794) | 31 pli before water; 28 pli after immersion; over 15 pli on green or damp concrete |
| Movement capability (ASTM C719) | +100% / -50% |
| Tensile strength (ASTM D412) | 250 to 300 psi |
| Elongation (ASTM D412) | 600 to 750% |
| Tear strength (ASTM D412) | 35 pli (156 N) |
| Stain and color change (ASTM C510) | No stain, no color change |
| Accelerated weathering (ASTM C793) | Pass |
| Surface temperature | 40 °F (5 °C) or above at application |
| Storage | Original, undamaged packaging in a clean, dry, protected location at 40 to 110 °F (5 to 43 °C) |
| Pack | 1.5 gal (5.7 L) pail, neutral base (color pak sold separately) |
| Part number | 445200A 802 |
Product documents: Tremco Vulkem 445SSL Data Sheet (PDF)
Frequently Asked Questions
Does the Vulkem 445SSL Neutral Base need a color pak?
Yes. Tremco supplies Vulkem 445SSL as 1.5 gal kits that require a separate color pak (pigment), tinted to your choice of 70 standard colors or custom matched on request. Mix the pak in per the Technical Bulletin on Vulkem 445SSL and continue mixing until there are no color striations. Universal Color Paks are listed separately.
Where can Vulkem 445SSL be used?
It is intended for expansion joints in sidewalks, swimming pool decks, plazas, floors and other horizontal surfaces with slopes up to 6% (a 1 ft rise for every 16 ft run). Do not use it in immersed conditions that contain chlorinated water.
Can it be applied to damp or green concrete?
Yes. It can go on green concrete 24 hr after the forms are removed, once concrete sealers or curing agents have been removed by grinding. The concrete can be damp, but do not apply it where there is standing water in or close to the joints; Tremco recommends catalyzing with water on damp surfaces.
Does Vulkem 445SSL need a primer?
It typically adheres to concrete and stone without primers, but Tremco always recommends a mock-up or field adhesion test on the job materials (ASTM C1193, appendix X1). Where needed, Tremco names Vulkem Primer #191 Low VOC QD for porous surfaces and TREMprime Non-Porous Primer for metals.
How should the joint be sized?
Joint width should be 4 times the anticipated movement and not less than 1/4 in (6 mm). Sealant depth may equal the width for joints under 1/2 in wide; for joints 1/2 in to 1 in (13 mm to 25 mm) wide, depth is about one-half the width, with a maximum depth of 1/2 in (13 mm). For joints wider than 1 in, contact Tremco. Coverage is 308 linear feet per gal for 1/4 in x 1/4 in joints.
How long does Vulkem 445SSL take to cure?
At 75 °F (23.9 °C) and 50% RH a skin forms within 5 hr, and curing continues at about 1/16 in (1.6 mm) depth per day. Cure slows as temperature and humidity drop: allow about one additional day for every 10 °F decrease. Tremco covers water activation of pails in Technical Bulletin No. S-17-01.
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