Bona D515 MultiPrime – Water-Based Primer 10 kg

Bona D515 MultiPrime is a water-based, low-emission primer designed for improving adhesion on absorbent and non-absorbent subfloors before the application of adhesives or levelling compounds. It regulates surface absorption, binds residual dust and ensures a stable, uniform base for further installation layers.

Fast-drying and easy to apply, Bona D515 is ideal for professional floor preparation, providing a reliable bonding surface for Bona adhesives and smoothing systems.

Key Features

• Water-based acrylic primer
• Improves adhesion on a wide range of subfloors
• Regulates absorbency of porous substrates
• Binds dust and stabilises weak surfaces
• Low emission and easy to apply
• Fast drying for efficient workflows
• Compatible with Bona adhesives and levelling compounds

Recommended Uses

• Priming concrete and cement screeds
• Preparation before applying levelling compounds
• Use prior to Bona adhesive systems
• Improving bonding on porous and slightly absorbent substrates

Application Instructions

• Ensure substrate is clean, dry, solid and free from grease, oil and dust.
• Apply evenly using a roller, brush or suitable applicator.
• On highly absorbent substrates, dilution with water may be required.
• Allow to dry completely before applying the next layer.

Drying Time

Coverage

Approx. 100–150 g/m², depending on substrate porosity and application method.

Technical Data

FAQs

Is Bona D515 a moisture barrier?
No — it is a primer, not a DPM. For moisture protection use Bona R540 or R590.

Do I need to dilute it?
Only on highly absorbent substrates; otherwise it is ready to use.

Can it be used before levelling compound?
Yes — it is ideal for preparing the surface before applying smoothing compounds.

What is the main benefit?
It ensures strong adhesion and a stable, uniform substrate.