Construction Additives
Adhesion Promoter · Silane / Specialty

CONCRETE ADHESION ADDITIVES

Improves coating adhesion to concrete and other demanding substrates — building a durable chemical bridge between mineral surfaces and epoxy or PU resin systems.

Adhesion Promoters
AppearanceClear liquid
ChemistrySilane-based
EffectHigher pull-off adhesion
Typical dosage0.5 – 2%
01

How adhesion promotion works

STEP 1 — SUBSTRATE BONDING

Reacts with mineral surfaces

The silane's inorganic end group reacts with hydroxyl groups on the concrete or mineral substrate, forming a stable chemical anchor.

STEP 2 — RESIN BONDING

Links into the resin network

The organic end group reacts into the curing epoxy or PU resin, incorporating the promoter into the coating's own polymer network.

STEP 3 — BRIDGE FORMATION

Forms a durable molecular bridge

The result is a covalent bridge across the interface, raising pull-off adhesion and resistance to moisture-driven delamination.

02

Technical Specifications

Property
Typical value
Product type
Silane-based adhesion promoter
Function
Concrete adhesion additive
Appearance
Clear liquid
Active content
≥ 95%
Recommended dosage
0.5 – 2% on total formulation weight
Compatible resins
Epoxy, polyurethane, polyaspartic
Key benefit
Improved pull-off adhesion, moisture resistance
Shelf life
12 months, unopened, sealed, dry storage
Packaging
1 kg · 5 kg · 25 kg pail
03

Application Systems

PRIMERS

Concrete adhesion primers

Builds bond strength on green, dense, or troweled concrete.

EPOXY FLOORING

Industrial epoxy floors

Improves resistance to delamination under thermal and mechanical stress.

MOISTURE MITIGATION

Moisture vapor barrier systems

Supports adhesion in systems exposed to slab moisture vapor.

REPAIR COATINGS

Concrete repair & overlay coatings

Bonds new coating layers reliably to existing concrete surfaces.

04

Handling & Storage

Handling & Storage

Storage temperature 5°C – 30°C
Storage condition Sealed, protect from moisture
Mixing Add during resin blending, low-shear
Moisture sensitivity Reacts with atmospheric moisture — reseal promptly

Safety & Documentation

Compatibility Most epoxy & PU resin systems
Personal protection See safety data sheet
Transport classification See SDS
Documentation TDS & SDS available on request
Request a sample or the full technical data sheet

Our team can advise on the right grade for your stone type and exposure.

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