Special Finishes

Architectural and Decorative Coating Specialists

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A two part Adhesive Cement patching Compound.

Typical Properties & Features:

Shieldpatch is manufactured from refined graded silica sand, Portland cement, quality minerals and inert fibres, giving interbinding properties for a very strong flexible product.  mixed on site with Multibond Adhesive (acrylic adhesive) it ensures outstanding adhesion and binding properties to all prepared surfaces.  It possesses excellent exterior durability and is very hard wearing with exceptional adhesion even over existing prepared painted surfaces.

Suggested Uses:

Shieldpatch has been specifically formulated as a flushing compound for block buildings, concrete floors, and for use in the Stongwall Insulated Wall Cladding System.  It can be used to repair existing concrete where adhesion is important.  It is used as a splash coat for solid plastering ensuring adhesion and preventing loose drumming of plaster in future years.  It is especially useful for improving the appearance and weather proofing of block buildings.  It is applied in two separate 1 mm thin flush coats over the total block areas, then the application of one coat of Flexicure RT100 Sponge Finish resulting in a very reasonable finish that ensures against loss of adhesion.


Shieldpatch can be left smooth or textured and over-coated with one coat of Uniseal then one - two coats of Colourglo Acrylic Low Sheen or Shieldtex Hi Build Acrylic Flexible Membrane or Colourtrend Elastomeric Membrane (CTEM), that would result in a guaranteed waterproof coating.  Textures available in fine, medium or coarse.  Refer to the Acrylic Hi Build or Texturecoat data sheets.

Painted Surfaces:

Insure all existing old paint is treated with Chemocide, agitate using a nylon brush then waterblast clean.  Remove all dirt, grime and especially all loose flaky paint, allow to dry then pole sand using 40 -60 grit sandpaper.  To total area apply one coat of Multibond Adhesive mixed with 10% Shieldpatch to achieve a think slurry, apply with a roller one coat over total area, allow one - two hours then apply two coats of Shieldpatch mixed with Multibond Adhesive.  allow four - eight hours between coats then apply one coat of Flexicure RT100 Sponge Finish in colour as desired.  Overcoat using one coat of Uniseal then one - two coats of Colourglo Acrylic Low Sheen or CTEM in colour required.

Application Method:

Trowel, Hopper Gun, Concrete Mono Pump, and Terylene Gun.


Mixed A and B yields approximately 18 litres per mixed bag.

Coverage Rate:

18m² per bag at 1mm thickness or 1m² per litre.  On blockwork, two coats applied to 3mm thickness would cover approximately 6m² per bag and use (3 litres per m²)

Pot Life:

1.5 - 2 hours depending on temperature.


Once setting up begins in container, do not add more water and use (product would require dumping).  Remix a new batch.

Should more working time be required, retarding additives are available on request.  To prevent fast drying always store mixed material and use out of direct sunlight.  Always keep containers covered with polythene.  Refer to Special Finishes (NZ) Ltd for Fixit 100 Retarder to slow dry times and provide improved workability in hot conditions or tropical climates.

Mixing Instructions:

For 1 Bag - Add 4 litres Multibond Adhesive to 20 litre pail  Using power stirrer thoroughly mix in total quantity of Shieldpatch to a stiff paste, adjust with water to suit application.  Mix time - 5 minutes.

Small Quantity:

Mix 3 parts powder to 1 part Multibond Adhesive by volume, adjust with water to suit application.

Clean Up:

Soap and water, Brush Wash.  Cclean trowels, tools, etc. immediately with water to prevent curing, Immerse trowels / tools in pails of water during stoppages to prevent drying. If cured immerse in Special Finishes Brush Wash, then clean with water.


Store above ground level and keep dry to prevent lumping.  maintain covers on Multibond Adhesive.


Shieldpatch 20 kg - wet strength multiwall bags

Multibond Adhesive - 4, 5, 10 and 20 litre plastic pails

Warranty / Liability

Special Finishes (NZ) Ltd provides all the enclosed information in good faith but without warrantee and is to assist your application. However the use of this product being used is beyond their control. The manufacturers can accept no responsibility whatsoever for any damage or failure arising from its application or use. It is totally the responsibility of the user to insure that the product is suitable for its intended use.