INTRASIT® GP-WTA Plus 54Z

Properties

• quality-monitored
• mineral
• high salt absorbency and salt retention capacity
• good workability
• good adhesion
• vapour diffusion permeable
• can be processed by machine and by hand

Applications

• all types of masonry

Composition

• Cement with high sulphate-resistance according to DIN EN 197-1
• graded stone aggregates in accordance with DIN 13139
• mineral lightweight aggregates according to DIN EN 13055
• additives for regulating and improving workability and product properties

Substrate

Properties/tests

• For assessing the plaster primer, VOB/C DIN 18350, Section 3, DIN EN 13914-1/13914-2 as well as the plaster standard DIN 18550-1/18550-2 should be observed.
• The substrate must be load-bearing, clean and free of adhesion-reducing residues.

Pretreatment

• Old plaster must be removed at least 80 to 100 cm above the visible or adjacent damaged zone up to the masonry.
• Crumbly masonry joints are to be scraped out approx. 2 - 3 cm deep.
• Damaged stones must be replaced.
• Non-load-bearing coatings must be completely removed.
• Clean masonry thoroughly and remove dust.
• Highly absorbent substrates should be wetted in good time, days before if need be.
• To improve adhesion, depending on the condition of the substrate, a wetting pre-spray (approx. 50 – 60% coverage) with INTRASIT VS-WTA plus should be applied in accordance with the WTA.

Processing

Processing

• Can be applied by hand and with standard plastering machines.
• When using plastering machines, no additional equipment (e.g. additional mixer or air-entraining screw jacket) needs to be used.
• When using a machine: Adjust the water supply to a workable consistency.
• Work interruptions should be limited to a maximum of 15 to 20 minutes.
• When mixing manually, first place the quantity of water specified in the technical data in a clean container and then sprinkle in dry mortar. Use clean tap water.
• Mix the material with a suitable agitator until homogeneous and lump-free, allow briefly to rest and then stir again, adding more water if necessary, and adjust the consistency to a workable consistency.
• Free-fall mixers are not suitable.
• Do not mix with other products and/or foreign substances.
• Apply one or more layers of material to the prepared plaster base.
• The recommended plaster thickness in one layer is approx. 10 to 30 mm.
• The minimum layer thickness of 10 mm specified in the WTA data sheet must be adhered to as a pore base render.
• Subsequently, smooth the fresh plaster surface with a suitable tool, e.g. a carting scraper, so that it is plumb and level.
• Thoroughly roughen the last layer with a suitable tool, e.g. a grid scraper, once the surface is sufficiently hard.
• In the case of multi-layer application, observe intermediate standing times of 1 day per mm of application thickness.

Cleaning the tools

• Clean all tools and equipment with water immediately after use.

Notes

• Maintain a processing temperature of +5 °C to +30 °C.
• Mortar that has already hardened cannot be diluted with additional water, re-mixed and further processed.
• High temperatures accelerate, low temperatures delay the setting process.
• In unfavorable weather conditions (e.g. driving rain, strong sun and/or wind, frost), suitable protective measures must be taken, especially for freshly coated surfaces.
• The plaster surface should be kept damp for at least 3 days to prevent water from being removed too quickly at high temperatures.
• Further coating with INTRASIT restoration plasters in accordance with WTA 2-9. Please refer to the technical data sheet of the selected product or our project-related restoration proposal.
• Carefully cover adjacent surfaces and components (e.g. windows, window sills, etc.). Wash off any soiling immediately with water.
• Construction waste close to the renovation site must be removed daily to prevent salt migration.
• The diffusion-equivalent air layer thickness of sd < 0.2 m of each individual subsequent layer must not be exceeded.