Ultra Mastik

 

DESCRIPTION

White tile adhesive with superior anti-slip. Able to hold a 600x600mm tile. Smooth feel for easy trowelling. Suitable for commercial and high traffic installations.

 

CLASSIFICATION / STANDARDS

AS4992 CLASSIFICATION

C2 “Improved Adhesive” (excellent bond)

S1 Flexible

E Extended Open Time

T Slip-resistant

 

FEATURES

• Holds 600x600mm wall tiles
• Smooth Trowel Feel
• Excellent water resistance
• Commercial grade
• White colour

 

BEST FOR

• Large wall tiles
• Light coloured tiles where superior non slump is needed
• Large jobs

 

SUITABLE SUBSTRATES

• Concrete
• Render and early age (green) screed
• Fibre Cement
• Plasterboard
• ASA Dampfix Gold ASA Dampfix 3 ASA Dampfix 2 and ASA Dampfix
• Wall and Floor
• High Traffic
• Suitable for immersion when 50% mix water is replaced with ASA Megalastic
• Commercial

 

SUITABLE TILES

All moisture stable tile types. Suitable tiles include porcelain ceramic terracotta terrazzo glass and stone.

 

SURFACE PREPARATION

1. Make sure the substrate has been correctly installed according to relevant standards and manufacturer recommendations
2. Allow for minimum curing time for screeds (1 day) and concrete (7 days)
3. Remove all materials that will interfere with bond. These include oils grease wax release agents curing compounds dust and any loose material
4. Ensure surface is sound. All weak or friable material must be removed
5. Check the cleaned surface by applying a small amount of water. It will be easily absorbed if porous and bead on the surface if not
6. Treat porous surfaces with ASA Multiprime
7. Most non-porous surfaces may be primed with Bostik Ultra NP Primer
8. If tiling over existing tiles abrade the surface and clean well before tiling
9. Contact Bostik before commencing tiling if there is any doubt about required or suitable preparation.

 

MIXING

20kg powder mixes into 5.5 to 6 litres of water

1Kg into 275 to 300 mls water

1. add water to bucket
2. mix powder into water with mechanical stirring
3. mix until smooth
4. allow to stand for 2 minutes before using

 

Note: Mix consistency will appear thicker than standard adhesives but will still be smooth and easy to trowel. When mixed correctly mixed product will stick to underside of trowel without dropping off. If not holding tiles on wall as expected mix in more powder to produce a stiffer mix or measure water for next batch.

Always add the powder to the water. Use a drill with suitable mixing paddle designed for the task. Do not mix by hand. Use a low speed mixer (300rpm).

 

APPLICATION

1. Apply to the prepared substrate using a notched trowel. Use a 6mm notch for tiles up to 150x150mm a 10mm notch for up to 250x250mm and a 12mm notch for 300x300mm tiles. Tiles 400x400mm and larger should be back-buttered in addition to using a 12mm notched trowel
2. Press tiles firmly into adhesive before it skins
3. Apply only up to 1m² at a time to avoid skinning
4. If skinned re-spread to expose “wet” adhesive
5. Check that enough of the substrate and tile back are in contact with adhesive (usually at least 80% but higher for large format tiles)
6. Discard any material that has hardened before use
7. Allow adhesive to harden adequately before grouting
8. All workmanship must be carried out in accordance with AS3958.1-2007 and good workmanship practices

 

COVERAGE

On site coverage will vary widely as it is dependant on a large number of variables. These include but are not limited to: application technique substrate texture wastage trowel angle trowel wear contact coverage and flatness. As such the following coverage is intended as a guide only. It is advised that comparisons between products are based on the mixed volume.

When mixed bag yields 17 to 18litres

Approximate Coverage (10mm trowel)

kg per m2

m2 per bag

2.80

7.0

 

GROUTING

Use a suitable ASA grout after the tiles appear firm. Modify grout with Megalastic when tiling is over a flexible substrate or when improved water resistance is required

 

CLEAN UP

Remove using a wet cloth before the product hardens. If allowed to set it must be removed mechanically

 

POT LIFE

3 hours at 22°C and 50% Relative humidity

 

SETTING TIME

<24. hours at 22°C and 50% Relative humidity

Pot life and setting will be influenced by ambient conditions. In warm or dry conditions a shorter pot life and setting time should be expected and longer in when cool. Extra care should be in warm or dry conditions to ensure the adhesive has not stiffened significantly before the tiles are applied. Ensure that the open time has not been exceeded. If in doubt discard unused product and prepare a fresh batch.

 

STORAGE & SHELF LIFE

12 Months when stored off the ground in a cool dry weatherproof environment.

 

PHYSICAL PROPERTIES

Appearance:White powder

Mixed S.G:1.58 g/cm3

Mixing ratio20kg into 5 – 5.5 L

Pot life:3 hrs 22°C and 50% RH

Set time:<24 hrs 22°C and 50% RH

Open time:> 30 mins

SCAQMD – | VOC %:< 1

US RULE 1168 | VOC g/L:< 1

 

MECHANICAL PROPERTIES

Tensile strength:> 1.0 MPa

After immersion:> 1.0 MPa

Heat ageing:> 1.0 MPa

Freeze/thaw:> 1.0 MPa

Transverse deformation:> 2.5mm <5mm

Slip:< 0.5 mm

IMPORTANT NOTES

• All workmanship (including movement joints) must be carried out in accordance with AS3958.1-2007
• When fixing stone follow the recommendations in the Australian Stone Advisory Association (ASAA) Natural Stone Design Manual.
• Always read the entire Product Technical Datasheet before using
• Always refer to the Material Safety Data Sheet (MSDS) before using
• Only tile surfaces that are suitable. If in doubt check with substrate manufacturer
• Use only ambient conditions between 5 and 35°C. Do not use in windy or very low humidity conditions
• Uncured adhesive may wash-out if exposed to excessive moisture before curing adequately
• When tiling walls do not exceed 2.7m and always check that it will support the intended weight
• Not designed for direct bonding to solvent based polyurethane waterproofing membranes. If required to tile an area treated with this type of membrane special surface preparation is required. Contact ASA/Bostik for further information
• Not designed for direct bonding to plastic or metal.
• Suspended concrete slabs must conform to AS3958.1-2007 for maximum deflection. Any post tensioned concrete slabs must be treated as a flexible substrate. For further information contact ASA/Bostik
• Contact Bostik for advice before work starts if substrate or tile are unusual or non-traditional or if there is any uncertainty regarding suitability or preparation
• When tiling directly onto waterproofing membranes check to ensure compatibility. If not already approved by Bostik in writing additional compatibility tests may be required.
• This product is not suitable for use with moisture sensitive stone tile or other materials.
• If tiling is to be immersed use with 50% mix water replaced with ASA Megalastic
• If considering tiling over paint it must be well bonded clean and sound. Abrade and clean enamel paints. Prime before tiling.
• Do not use to tile directly onto timber plywood particleboard MDF or Masonite
• May be used to bond up to 300x300mm tiles to existing tiles. Ensure existing tile surface is sound and clean. Remove all cracked drummy or otherwise unsound tiles and repair area appropriately. Due to the possible variables extra surface preparation may be required (including mechanical abrasion). Contact Bostik before work starts for further advice if Contact Bostik before work starts for further advice if required.
• This adhesive may be used with ASA Megalastic if improved flexibility adhesion or water resistance is required.

 

All workmanship (including movement joints) must be carried out in accordance with AS3958.1-2007

 

SAFETY PRECAUTIONS

SEE THE MATERIAL SAFETY DATA SHEET FOR ADDITIONAL INFORMATION.