Excessive Foam
Foam generated during mixing may be stabilized by surfactants and polymers, making rapid collapse more difficult.
Recommended:
Fast Foam Control
DRY-MIX FORMULATION ADDITIVE
Powder Defoamer
Controlled Air. Denser Matrix. Cleaner Surface.
POLYVIA™ Powder Defoamer is a free-flowing dry additive engineered to control unwanted foam and entrained air in cementitious and gypsum-based formulations.
Designed for self-leveling compounds, grouts, repair mortars, tile adhesives and other dry-mix systems, it provides a controlled balance of defoaming efficiency, air release, formulation compatibility and surface quality.
Efficient Foam Control
Reduce unwanted foam during mixing.
Controlled Air Release
Promote efficient release of entrained air.
Higher Matrix Density
Support a denser, more uniform mortar structure.
Improved Surface Quality
Help reduce air-related pinholes and surface defects.
PRODUCT SNAPSHOT
What Is Powder Defoamer?
A Functional Additive for Air Management
Powder defoamer is a dry-form additive used to manage unwanted air in cementitious, gypsum-based and polymer-modified formulations.
It can be added directly during dry blending and becomes active after water addition, making it well suited for dry-mix mortar and other premixed construction materials.
Product Type
Powder Defoamer / Air-Control Additive
Physical Form
Free-Flowing Powder
Main Function
Foam Suppression & Entrained-Air Control
Performance Focus
Air Release / Density / Surface Quality
Primary Systems
Cementitious / Gypsum / Dry-Mix Systems
Packaging
25 kg Bag
HS Code
382440
SOLVE THE AIR-CONTROL CHALLENGE
Different Air Problems Require Different Defoaming Strategies.
Powder defoamer performance is not only about removing visible foam. Effective air control also requires managing residual micro-air, wet density and surface quality within the fresh mortar system
Entrained Micro-Air
Fine air bubbles may remain trapped in fresh mortar after visible foam disappears, increasing residual air content.
Recommended:
Efficient Air Release
Low Density & Internal Voids
Excess unwanted air can reduce wet density and create internal voids, resulting in a less compact matrix.
Recommended:
Density Optimization
Pinholes & Surface Defects
Residual air near the surface can cause pinholes and craters, particularly in highly flowable mortar systems.
Recommended:
Surface Quality Control
Technical Note: Visible foam and entrained micro-air are different air-control challenges. Effective defoaming should address both while maintaining formulation balance.
CHOOSE THE RIGHT POWDER DEFOAMER GRADE
Select the Right Balance of Defoaming Efficiency, Air Release and Surface Control.
Different dry-mix systems require different levels of foam control. Select the grade according to formulation complexity, target air content, flow requirements and surface quality.
| Grade | Grade Positioning | Foam Control | Air Release | Surface Control | Recommended Systems |
|---|---|---|---|---|---|
| POLYVIA™ DF100 | General Purpose | ●●●● | ●●●● | ●●● | General Mortar / Putty / Skim Coat |
| POLYVIA™ DF200 | Balanced Performance | ●●●● | ●●●● | ●●●● | Grout / Repair Mortar / Tile Adhesive |
| POLYVIA™ DF300 | High-Performance Air Control | ●●●●● | ●●●●● | ●●●●● | Self-Leveling / Flooring / High-Flow Mortar |
Technical Note: Effective defoamer selection requires a controlled balance between foam suppression, residual air, flow behavior and surface quality. Grade and dosage should be optimized within the complete formulation under representative application conditions.
HOW POWDER DEFOAMER WORKS
From Dry Dispersion to Controlled Air Release
Uniform Distribution
Powder defoamer disperses throughout the dry blend together with binders, fillers and other additives.
Activation at Bubble Interfaces
After water addition, active defoaming components interact with foam films and air–liquid interfaces during mixing.
Foam Film Breakdown
Defoaming action destabilizes persistent foam films, promoting bubble coalescence and rupture during mixing.
Controlled Air Removal
Destabilized bubbles collapse or escape from the fresh system, reducing residual air and air-related defects.
TECHNICAL DATA
Select the appropriate grade according to required air-control efficiency, formulation characteristics and application requirements.
| Property | POLYVIA™ DF100 | POLYVIA™ DF200 | POLYVIA™ DF300 |
|---|---|---|---|
| Appearance | White Powder | White Powder | White Powder |
| Active content, % | ≥75 | ≥85 | ≥95 |
| Moisture, % | ≤5.0 | ≤5.0 | ≤5.0 |
| Recommended Dosage, % of Total Dry Mix | 0.10–0.30 | 0.10–0.30 | 0.05–0.20 |
APPLICATIONS
FLOW & PRECISION SYSTEMS
Self-Leveling Compound
Helps control entrained air in highly flowable systems, particularly where PCE Powder is used to achieve high fluidity and low water demand.
Non-Shrink Grout
Controls unwanted air in fluid grout systems, supporting wet density and a more compact matrix.
Repair Mortar
Reduces unwanted air during mixing, helping limit internal voids and improve finished surface quality.
Cementitious Screed
Controls unwanted air in cementitious screed formulations, supporting a more compact matrix and consistent finished surfaces.
MORTAR & FINISHING SYSTEMS
Tile Adhesive
Controls unwanted air in polymer-modified tile adhesive formulations containing HPMC and RDP, supporting consistent application performance.
Waterproof Mortar
Reduces unwanted entrained air, supporting a more compact and uniform cementitious matrix.
Skim Coat & Wall Putty
Helps minimize air-related pinholes and surface defects for a smoother, more consistent finish.
Gypsum-Based Mortar
Controls foam and residual air in gypsum formulations, supporting consistent structure and surface quality.
Application Note: Defoamer performance should be evaluated within the complete formulation, as binder chemistry, HPMC, RDP, PCE Superplasticizer and other functional additives can influence foam stability, air release and overall system behavior.
PERFORMANCE IN THE MORTAR SYSTEM
From Air Control to a More Uniform Cementitious Matrix
Effective air control is not only about removing visible foam. By limiting unwanted air and supporting air release during mixing and placement, powder defoamer can help develop a denser, more uniform mortar matrix.
Lower Unwanted Air
Helps control excessive foam and entrained micro-air generated during mixing and formulation processing.
Higher Wet Density
Reduced unwanted air allows the fresh mortar to develop a more compact and consistent internal structure.
Fewer Internal Voids
Improved air release helps limit unnecessary voids that can remain within the hardened cementitious matrix.
More Uniform Matrix
Better air control supports more consistent material distribution and matrix continuity throughout the mortar system.
Improved Surface Quality
A more controlled air structure can help reduce pinholes and support a cleaner, more uniform finished surface.
Performance Note: Effective control of unwanted air can improve matrix compactness and support density-dependent performance. Final properties depend on defoamer dosage, formulation composition, mixing conditions and curing.
TECHNICAL INFORMATION
How Powder Defoamer Behaves In Dry-Mix FormulationS
Effective air control depends on the complete formulation—not defoamer dosage alone.
Powder defoamer performance is governed by the complete dry-mix formulation—from foam generation and stabilization to bubble mobility and final air release.
The optimum defoamer should reduce unwanted air while maintaining the required flow, rheology, setting behavior and surface quality of the finished system.
Binder Chemistry
Cement, gypsum and blended binders influence foam formation, interfacial behavior and overall defoamer response.
Cellulose Ether
HPMC and MHEC modify viscosity and water retention, affecting bubble stability, mobility and air release.
RDP & Polymers
RDP and other polymers can stabilize air interfaces and change the defoaming demand of polymer-modified mortars.
PCE & Dispersants
PCE and other dispersants influence particle dispersion, flow and air behavior within highly fluid mortar systems.
Water & Consistency
Water content influences foam formation, bubble mobility and the ability of entrained air to escape during mixing.
Flow & Rheology
System viscosity determines how easily bubbles coalesce, rise and escape from the fresh mortar matrix.
Mixing Conditions
Mixing speed, time and equipment affect the amount, size and distribution of air introduced into the formulation.
Grade & Dosage
Select grade and dosage to reach the target air content without unnecessarily disturbing flow or application behavior.
Formulation Note: In polymer-modified dry-mix systems, Powder Defoamer is commonly evaluated alongside HPMC, RDP and PCE Powder to balance air control, rheology, flow and application performance.
TECHNICAL SUPPORT
From Grade Selection to Formulation Optimization
Technical Data Sheet
Product properties, dosage and recommended applications.
Download ↓
Safety Data Sheet
Handling, storage and safety information.
Download ↓
Application Guide
Grade selection, dosage and air-control recommendations.
Download ↓
Certificate of Analysis
Batch-specific quality documentation.
Download ↓FREQUENTLY ASKED QUESTIONS
What is Powder Defoamer? +
Powder Defoamer is a dry-form functional additive designed to control unwanted foam and entrained air in cementitious, gypsum-based and other dry-mix formulations.
It is incorporated directly into the dry blend and becomes active after water addition and mixing.
Why is Powder Defoamer used in dry-mix mortar? +
Dry-mix formulations containing surfactants, polymers and rheology modifiers can generate or stabilize unwanted air during mixing.
Powder Defoamer helps suppress foam and release entrained air, supporting wet density, matrix compactness and surface quality.
What is the difference between defoaming and air release? +
Defoaming primarily refers to destabilizing and collapsing foam, while air release refers to removing entrained bubbles from within the fresh mortar.
Effective air control often requires both mechanisms because visible foam can disappear while residual micro-air remains in the system.
Which Powder Defoamer is suitable for self-leveling compounds? +
For self-leveling and other highly flowable systems, a grade with efficient foam control, air release and surface-defect control is generally preferred.
Within the POLYVIA™ range, DF300 is positioned for high-performance air control in self-leveling, flooring and other high-flow mortar systems.
Can Powder Defoamer be used with HPMC, RDP and PCE? +
Yes. Powder Defoamer can be formulated alongside HPMC, RDP and PCE in dry-mix systems.
Because these additives can influence rheology, interfacial behavior, foam stability and air release, defoamer grade and dosage should be evaluated within the complete formulation.
How much Powder Defoamer should I use? +
The optimum dosage depends on the defoamer grade, binder system, polymer content, target air level and application requirements.
As a starting point, follow the recommended dosage range for the selected POLYVIA™ grade and optimize it through formulation testing.
Can excessive Powder Defoamer affect mortar performance? +
Yes. Excessive dosage may disturb the intended balance of the formulation and can influence flow, rheology, setting behavior or surface characteristics, depending on the system.
The objective is therefore not maximum defoaming power, but the lowest effective dosage that achieves the required air-control performance.
How do I choose the right Powder Defoamer grade? +
Select the grade according to the foam tendency, residual air, flow characteristics and surface requirements of the formulation.
General dry-mix systems may require balanced foam control, while self-leveling and other high-flow systems typically demand more efficient air release and surface-defect control. Final selection should be confirmed through formulation testing.
NOT SURE WHICH POWDER DEFOAMER FITS YOUR FORMULATION?
Start With Your Air-Control Problem. Share your application, binder system, current additive package and observed foam or surface problem. POLYVIA™ can help evaluate the interaction between defoamer, cellulose ether, polymer powder and superplasticizer to identify an appropriate grade and starting dosage for formulation testing.
