Fassa SM 485 Fibre Reinforced Self Levelling Screed – 25kg

• Minimum order quantity: 5 bags
• Orders below minimum quantity may be cancelled
• Free delivery on full pallet orders
• Heavy goods delivery charges apply to smaller quantities
• Approx. coverage: 5m² per bag at 3mm thickness
• Full pallet covers approx. 200m² at 3mm

Fibre Reinforced Self Levelling Screed for LVT, Vinyl, Carpet, Wood Flooring & More

Fassa SM 485 is a high-performance fibre reinforced self levelling screed designed for smoothing and levelling internal subfloors from 3–30mm in a single application. Suitable for commercial and domestic flooring projects, SM 485 delivers excellent flow, strong mechanical performance and compatibility with underfloor heating systems.

Suitable Substrates

SM 485 is suitable, subject to correct preparation and priming, for mechanically sound and dimensionally stable internal substrates including:

• Cementitious screeds
• Bonded screeds
• Anhydrite (calcium sulphate) screeds
• Securely bonded existing ceramic flooring

Suitable Finished Floorcoverings

Once cured, SM 485 provides an excellent base for the installation of:

• LVT (Luxury Vinyl Tile) – gluedown and click
• Vinyl & resilient flooring
• PVC flooring
• Carpet
• Rubber flooring
• Wood flooring (as a finished floorcovering installed over the cured compound)
• Ceramic & porcelain tiles
• Natural stone
• Resin flooring

Note: "Wood flooring" refers to the finished floorcovering only. SM 485 is not approved for direct application over a timber subfloor — see the technical warning below.

⚠️ Technical Warning – Timber Substrates

Fassa's current technical data sheet does not approve SM 485 for direct application over plywood, floorboards or other timber subfloors. Do not use on highly flexible substrates unless suitability has been confirmed in writing by Fassa Technical Assistance.

Compatible Fassa Primers

Always prime the substrate before applying SM 485. Choose the correct primer based on your substrate type:

• Fassa Primer DG74 – Acrylic primer for porous and absorbent substrates (concrete, sand/cement screeds). Available in 5kg (50m²) and 20kg (200m²).
• Fassa Primertek Ultra – Textured grip primer for smooth and non-porous substrates (existing tiles, dense screeds, terrazzo). 10kg covers 80–120m².

Key Features

• Fibre reinforced formula
• Self levelling smooth finish
• Apply from 3mm to 30mm in a single pass
• Walkable after approximately 3 hours
• Suitable for hand or pump application
• Excellent substrate levelling performance
• CT-C25-F7 classification
• For internal use only
• Suitable for heavy domestic and commercial use

Coverage & Technical Specification

• Application thickness: 3–30mm
• Bag size: 25kg
• Walkable after approx. 3 hours
• Consumption: approx. 1.7kg/m² per millimetre
• Coverage: approx. 5m² per 25kg bag at 3mm
• Compressive strength classification: CT-C25-F7

Professional-use product. Always follow the current Fassa SM 485 technical data sheet and substrate preparation requirements before application.