Armstrong S-463 Level Strong Self-Leveling Underlayment – 50 lb Bag
BUCKWOLD
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Everything You Need to Know
Armstrong S-463 Level Strong Self-Leveling Underlayment (SKU S-463) is a cement-based, gray self-leveling underlayment mixed with plain water. It is ready for foot traffic in 2–3 hours and has a compressive strength of 5,300 psi after 28 days. This listing is for one 50 lb (22.7 kg) bag. Sold by the bag by Word of Mouth Floors — order exactly the quantity you need, no square-foot maths.
Coverage: 52–56 sq ft at 1/8" thick per bag (per Armstrong; actual coverage varies with the substrate and application).
Key Benefits
- Fast — ready for foot traffic in 2–3 hours; approximately 10 minutes of flow time at 70°F.
- Strong — compressive strength of 5,300 psi (28 days).
- Moisture tolerant — unaffected by concrete moisture of up to 99% RH.
- Versatile thickness — 1/16" up to 1-1/2" on porous substrates (limit 1/2" on non-porous).
Best Applications
Recommended for: Overall leveling of concrete subfloors on any grade level, rapid-drying cement screeds, ceramic and quarry tile, epoxy coatings, terrazzo, non-water-soluble adhesive residues on concrete and S-462 Seal Strong, before installing Armstrong resilient flooring.
Not recommended for: Substrates that have not been properly cleaned, primed and prepared per the Armstrong data sheet and ASTM F-2873.
Detailed Specifications
| Brand | Armstrong |
| Product | S-463 Level Strong Self-Leveling Underlayment |
| SKU | S-463 |
| Size | 50 lb Bag |
| Sold By | by the bag |
| Type | Cement-based self-leveling compound, mixed with plain water |
| Colour | Gray |
| Unit | 50 lb (22.7 kg) bag |
| Coverage | 52–56 sq ft at 1/8" thick per bag |
| Mix ratio | 50 lb powder to 6 quarts of cold clean water for applications under 1/4"; 5.75 quarts for 1/4" and thicker |
| Flow time | 10 minutes at 70°F (21°C) |
| VOC | 0 |
| Shelf life | 1 year, unopened, stored cool and dry |
Technical & Safety Data
Technical Data Sheet - Click Here
Safety Data Sheet - Click Here
Pickup
Available for pickup from Buckwold warehouses in Delta BC, Edmonton AB, Calgary AB, Regina SK, Saskatoon SK and Winnipeg MB. Contact Word of Mouth Floors to confirm current availability at your nearest Buckwold location.
Frequently Asked Questions
What is Armstrong S-463 Level Strong Self-Leveling Underlayment?
Level Strong Self-Leveling Underlayment (S-463) is a cement-based, gray self-leveling underlayment mixed with plain water.
What size is this listing?
This listing is for one 50 lb (22.7 kg) bag, sold by the bag.
How much does it cover?
Armstrong lists coverage of 52–56 sq ft at 1/8" thick per bag. Actual coverage varies with the substrate and application.
Where can I pick it up?
Available for pickup from Buckwold warehouses in Delta BC, Edmonton AB, Calgary AB, Regina SK, Saskatoon SK and Winnipeg MB. Contact Word of Mouth Floors to confirm current availability at your nearest Buckwold location.
Related Searches
self leveling underlayment · floor leveler · Armstrong Level Strong · concrete leveling compound · cement leveler for vinyl flooring · buy Armstrong flooring supplies online Canada
Estimated delivery after order confirmation
Standard delivery Monday through Friday
Save on shipping — pick up at our location
Stair nosing & moldings add 7-10 business days
Most suppliers allow returns within 30 days, provided items are unopened and undamaged
A restocking fee may be charged depending on the supplier
Custom orders and clearance items are non-returnable
Contact us at hello@wordofmouthfloors.com before ordering
Return policies vary by supplier. Please confirm your supplier's return policy prior to placing your order.
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