Armatex Prepatch Medium

Armatex Pre-Patch Medium is a 100% acrylic, water reducible patching compound that is supplied ready for use straight from the drum, apart from the required addition of cement for exterior work and some jointing applications, such as HardiTex™.

The product can be applied by either hawk and trowel or mortar spray devices and is suitable for application to most correctly prepared mineral based construction surfaces such as flush jointed block work, Hebel and raked brick, including, well adhered “gloss free” painted surfaces.

The product is principally used where a fine feather edge is required prior to the application of a low profile texture and will cover surface misalignment's of 2 to 3 mm. Pre-Patch Medium will feather down to a fine edge of (0.35 mm).

Pre-Patch Medium is suitable for the flexible jointing of HardiTex™, to skim and level flush jointed block or HardiTex™ and to fill minor surface imperfections, such as blow holes in concrete panels, prior to the application of an acrylic texture.
 
 

 

• Firewall Render
• PVC Permanent formwork with Firewall Render
• Cement sheet permanent formwork.
• Cement Sheet cladding.
• Hebel Block & Power Panel XL.
• All AAC Panels and block.
• Masonry substrates.
• Concrete block.
• Wire cut clay block.
• Unglazed brick.
• Cast in place concrete.
• Low gloss well adhered painted surfaces.

Gloss Level                                                                                                           Matt
Recommended Thinners                                                                             Water
Touch Dry                                                                                                             1 hour
Dry @ 25 deg C, 50% RH                                                                             2 hours
Theoretical spread rate [@ 900 mic D.F.T.]                                       5.0 m2/ltr
Abrasion resistance                                                                                       Excellent
Solvent resistance [Full top coated system]
Alcohol                                                                                                                  No reaction
Salt water                                                                                                            No reaction
Distilled water                                                                                                  No reaction
Diluted Caustic Soda                                                                                    No reaction
Detergent solution                                                                                        No reaction
Dilute 5% mineral acid                                                                                 No reaction
Accelerated weathering                                                                             [2000 hrs 313 U.V.B. Pass]
Excellent Specific Gravity                                                                          1.69
Solids volume                                                                                                    70% V/V
P.V.C.                                                                                                                       78% V/V
Moisture vapour transmission                                                               42.7g.m2/24hrs
[Method ASTM E96-1966 Full top-coated system]

Technical Data Sheet

Material Safety Data Sheet