Product Data Sheet Show all documents

Sikafloor® M 880

(former MasterSeal® M 880)

Two-part PU wear coat, fast and low temperature curing, for car park deck and waterproofing systems

Sikafloor® M 880 is a fast curing wear coat for use in car park deck waterproofing systems. It is a two-part, solvent-free, polyurethane and is slightly thixotropic so that it can be applied to ramps without the on-site addition of a thixotrope as well as to horizontal surfaces. It has a low consumption for economic use and exhibits an excellent bond to the waterproofing membrane. Sikafloor® M 880 is slightly elastic so that it can accommodate some movement of the deck. 

  • fast and low temperatures curing
  • excellent bond to waterproofing membranes
  • slightly thixotropic for application to ramps
  • withstands loads imposed by traffic
  • resistant to fuels, battery acid and hydraulic oils
  • low consumption
Product Data Sheet Show all documents

Usage

Sikafloor® M 880 is primarily intended for use in the fast track car park deck waterproofing systems, where its fast cure enables the fast curing top coat, to be applied after a short waiting time. Sikafloor® M 880 can also be used in other systems where its fast cure and excellent mechanical properties can be used to advantage. In applications where a fast curing product is not re-quired, or if high temperatures make the application of Sikafloor® M 880 difficult.  

Advantages

  • fast and low temperatures curing
  • excellent bond to waterproofing membranes
  • slightly thixotropic for application to ramps
  • withstands loads imposed by traffic
  • resistant to fuels, battery acid and hydraulic oils
  • low consumption

Packaging

Sikafloor® M 880 is supplied in 24 kg working packs.

Colour

Sikafloor® M 880 is available in white.

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

CE marking and declaration of performance based on EN 13813:2002 Screed material and floor screeds — Screed material — Properties and requirements — Synthetic resin screed material

CE marking and declaration of performance based on EN 1504-2:2004 Products and systems for the protection and repair of concrete structures — Surface protection systems for concrete — Coating
Product Information

Chemical Base

Polyurethane

Shelf Life

Under the specified storage conditions the material has a shelf life of 18 months. For maximum shelf life under these conditions see "Best before" label.

Storage Conditions

Store in original containers under dry conditions at a temperature between 15° – 25° C. Do not expose to direct sunlight.

 

Density

At 23°C

1,08 g/cm2
Technical Information

Shore D Hardness

Cured 28 days at +23°C

65

Tensile Strength

Cured 28 days at +23°C

16 N/mm2

(DIN 53504)

Application

Application Information

Mixing Ratio

100 : 46

Ambient Air Temperature

Min.

5°C

Max.

25°C

Relative Air Humidity

Max.

80%

Substrate Temperature

Min.

5°C

Max.

25°C

Pot Life

At 20°C

24 min

Waiting Time / Overcoating

Temperature

Minimum

at 5°C

6 h

at 8°C

4 h

at 12°C

3 h

at 23°C

2 h
Consumption

Consumption

The consumption of Sikafloor® M 880 is approx. 0.5 – 0.7 kg/m2 up to 1.6 kg/m2. 
Application steps

SUBSTRATE PREPARATION

The preparation of the substrate and the use of the appropriate primer are of paramount importance. All surfaces to which Sikafloor® M 880 is applied should be sound, clean and dry and free from oil or grease, loose particles and any other substances which may impair adhesion. For substrate pre-treatment prior to the primer application see primer technical data sheet.

Important: Sikafloor® M 880 is unsuitable for use as a tie coat to cementitious overlays

MIXING

Sikafloor® M 880 is supplied in working packs which are pre-packaged in the exact ratio. Before mixing, precondition both the A and B components to a temperature of approximately 15 to 25 °C.

Pour the entire contents of Part B into the container of Part A. DO NOT MIX BY HAND. Mix with a mechanical drill and paddle at a low speed (approx. 300 rpm) for at least 3 minutes. Scrape the sides and the bottom of the container several times to ensure complete mixing. Keep the mixer bladed fully submersed in the coating to avoid introducing air bubbles. DO NOT WORK OUT OF THE ORIGINAL CONTAINER.

After proper mixing to a homogeneous consistency, pour the mixed Parts A and B into a clean container and mix for a further minute.

APPLICATION

Sikafloor® M 880 should be spread with a squeegee and finished by rolling.

The curing time of the material is influenced by the ambient, material and substrate temperatures. At low temperatures, the chemical reactions are slowed down; this lengthens the pot life, open time and curing times. High temperatures speed up the chemical reactions thus the time frames mentioned above are shortened accordingly. To fully cure, the material, substrate and application temperature should not fall below the minimum. Following application the material should be protected from direct contact with water for approx. 3 hours The temperature of the substrate must be at least 3 K above the dew point both during the application and for at least 3 hours after application (at 15 °C).

CLEANING OF TOOLS

Clean all tools and application equipment with Sika® Thinner C immediately after use. Hardened material can only be removed mechanically.

 

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