Masterfix 820 is a two-component, solvent-free, insulating polyurethane adhesive. It is moisture and weather-resistant, suitable for both indoor and outdoor applications. The two-part system consists of Part A, a thixotropic paste, and Part B, a cross-linking hardener. When mixed, they form a uniform cream-colored paste that is easy to apply using a brush or roller.

Product Type: 2K (2 component) Adhesive, Reactive Adhesive

Application Area: Carpets, Insulation Board, Laminate Floor, Parquet Flooring, Wooden Surfaces

Compatible Substrates & Surfaces: Carpet, Expanded Polystyrene (EPS), Extruded Polystyrene (XPS), Polyisocyanurate, Polyvinyl Chloride (PVC), Tile

Application Method: Brush, Roller, Trowel

Chemical Family: Polyurethanes (PU)

Features: Good Bonding Strength, Good Weather Stability, Heat Resistance, Low Odor, Moisture Resistant, Water Resistant

Technical Data Sheet

Enhanced TDS

Identification & Functionality

Features & Benefits

Labeling Claims
Ready-to-Use Product Features
Product Features
  • Solvent free
  • Low odor
  • Excellent adhesion and bonding strength
  • Resistant to chemicals after 7 days of application
  • Usable immediately after curing
  • Withstands heavy duty wear
  • Excellent water resistance
  • Excellent heat resistance.

Applications & Uses

Markets
Applications
Application Area
Application Method
Compatible Substrates & Surfaces
Product Applications
  • MASTERFIX 820 is recommended for bonding parquet, multi-ply and pre-finished wooden flooring, wood-plank flooring, laminate flooring, rubber tiles, carpets, ceramic, quarry tiles, chipboard, plywood, hardboard, PVC sheets, PVC tiles and fiber/cement sheets.
  • MASTERFIX 820 is also recommended for bonding various insulation boards such as EPS (expanded polystyrene), XPS (extruded polystyrene), PIR (polyisocyanurate).
Application Procedure

The surface must be dry, structurally sound and free from loose particles, grease, dirt, dust, paint, wax, etc.

The two components which make up MASTERFIX 820 are contained in pre-dosed containers. The mixing ratio is already established (resin to hardener = 7:1). Mix the two components for a minimum of two minutes using a low speed mechanical mixer, until a smooth paste with a uniform cream color is obtained.

The final chemical setting and optimum bond strength is achieved after 7 days. Pot and setting times vary depending on temperature and relative humidity.

Pour the MASTERFIX 820 adhesive out of the container but do not scrape out remnants as they may not be totally mixed and may not cure. Use the MASTERFIX 820 adhesive immediately. Apply the MASTERFIX 820 adhesive with a suitable notched trowel at 0.25 to 0.4 kg/m2 per layer, depending on the porosity of the substrate. Curing time is dependent on atmospheric conditions and temperature. Curing will be considerably retarded at temperatures below 10°C. Bulk product in the bucket will cure faster than the film spread on the substrate, due to chemically induced heat build-up during the curing process. This temperature increase is negated once adhesive is spread. Higher temperatures will generally increase curing speed and reduce open time.

Properties

Physical Form
Appearance
Liquid Hardener, Thixotropic Paste - Resin
Component A
ValueUnitsTest Method / Conditions
ColorGrey--
Mixing Ratio7.0part by weight-
Component B
ValueUnitsTest Method / Conditions
ColorDark Brown--
Mixing Ratio1.0part by weight-
Specifications
ValueUnitsTest Method / Conditions
Specific Gravity1.54 - 1.56kg/ltr-
Viscosity35000 - 50000 cPsASTM D 2196
Solid Content98 - 100%-
Pot Life of Mixture30.0min.-
Initial Curing Time6 - 8hrs-
Coverage Range (subject to surface condition)0.25 - 0.4 kg/m2-
Product Properties
  • High temperatures accelerate curing, while low temperatures retard curing.
  • Coverage Range (subject to surface condition): Approx. 0.25 to 0.4 kg/m2 per layer, depending on the porosity of the substrate.

Packaging & Availability

Regional Availability
  • Middle East
Packaging Information

Part A (7 Kg) + Part B (1 Kg)

Storage & Handling

Shelf Life
9 months
Storage Conditions
  • 9 months from date of manufacturing in original unopened containers as per the storage conditions mentioned below.
  • Store product in a cool and dry place at 15°C to 30°C.
  • Do not store adhesive in direct sunlight.
  • Do not use at temperatures below 10°C or when humidity is over 90%.
  • Rotate stock on a “first in-first out” basis.