Bostik – SL-Gyp – Hybrid Gypsum Self-Leveling Underlayment – 50 lb
$115.92
By Bostik
Delivery & Pickup
✅ FREE pickup – our Waipio Business Center warehouse
🚚 Oahu curbside delivery $199.99 – FREE on orders $2,500+
🌺 Neighbor islands: we deliver to Young Brothers – you only pay YB freight
📦 Small items & samples ship via USPS – see all nationwide-shipping products
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Description
Bostik SL-Gyp is a premium, hybrid gypsum/cement-based, self-leveling underlayment that can be installed from 1/4" up to 2" thickness without extension. Designed for use over distressed gypsum subfloors, lightweight concrete, mud beds, structurally sound wood, and adhesive residue.
SL-Gyp is ideal for use on radiant or in-floor heating systems and suited for low-prep applications where shot-blasting and mechanical cleaning of substrates cannot be performed.
Key Features
- Install from 1/4" to 2" neat (no extension needed)
- Walkable in 3–4 hours
- Install floor covering in 2 days
- Exceptional compressive strength: 5,000 psi
- Compatible with radiant/in-floor heating systems
- 50 lb bag