Article No. 040220
WTA-compliant restoration plaster for masonry with moisture and salt loads
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Aggregate as per DIN EN 13139
The stated values represent typical product characteristics and are not to be construed as binding product specifications.
Field of application
- Repair, renovation and restoration of wall surfaces and masonry subjected to moisture and salt loads
- Internal wall surfaces in cellars, old buildings and facades
- Can be used in combination with SP Level (Art. 0401) in areas exposed to high levels of harmful salts
- Can be applied in a single layer as an undercoat or finishing coat
- High sulphate resistance and low active alkali content (SR/NA)
- Enables water vapour diffusion
- Single-layer application thickness up to 30 mm
- Machine workable
Clean, dust-free and capable of supporting a load.
Remove render, paint layers and coatings at least 80 cm above the damaged area.
Chase out friable joints to a depth of at least 2 cm.
Pre-wet absorbent substrates so that they are slightly damp.
Apply SP Prep or SP Prep rapid as a bonding layer in net form (covering area 50-70%) with max. 5 mm layer thickness.
Substrate: weakly absorbent
Apply SP Prep or SP Prep rapid at full coverage (100%) with max. 5 mm layer thickness.
Substrate: mineral waterproofing slurry
Apply SP Prep as a full-coverage bonding layer on the last slurry layer wet-on-wet.
Apply the product using a suitable tool.
Apply product using a suitable tool or machine.
Roughen the first layer with a render comb.
Apply second layer once sufficiently dry.
Alternatively, apply the total layer thickness in 2 coats, wet on wet, embedding reinforcement fabric (Tex 6.5/100).
Ensure that fabric sheets overlap by at least 10 cm.
Level off surface with a long float.
Finish the surface once set.
Prepare the surface for subsequent layers with a grated scraper after sufficient setting.
Pre-wet hydrophobic surfaces with detensioned water so that they are slightly damp before applying further render coats.
Once it has hardened, mortar must not be made workable again by adding either water or more wet mortar.
On critical substrates (highly uneven, fissured, mixed masonry) we recommend incorporating the reinforcement fabric in the upper third of the restoration render.
Apply additional diagonal reinforcement to the edges of building openings.
Protect wet mortar surfaces against frost, rain and drying out too quickly for at least 4 days.
At larger coating thicknesses of 10 - 30 mm, it is recommended to apply the mortar "wet on wet" in the render layer.
Work can continue on scraped surfaces can after 24-48 hours.
Work can continue on smoothed surfaces after min. 14 days.
Hairline/shrinkage cracks are safe and are not cause for complaint as they do not impair the properties of the mortar.
To ensure that the renovation is successful, the relevant drying conditions according to WTA Code of Practice 2-9-20/D must be met.
Please contact Remmers Technical Service (phone +49 5432 83900) before applying with machine processing.
When processing in machines, the product-specific data, such as strength, air void content, etc. might change.
Working tools / cleaning
Mixing tool, trowel, smoothing trowel, aluminium float, render comb, sponge float
Clean tools with water while the material is still fresh.
Storage / shelf life
If stored in an unopened container and in a dry place, the product will keep for approx. 12 months.
Approx. 8.5 kg/m²/cm layer thickness
Apply to a large enough trial area to determine the precise amount required.
May contain traces of pyrite (iron sulphide).
Do not use on gypsum-based substrates.
The mixing water must be of drinking water quality.
Low chromate content in accordance with Directive 2003/53/EC.
Always set up a trial area/trial areas first.
The characteristic data of the product were calculated under laboratory conditions at 20°C and 65% relative humidity.
Deviations from applicable regulations must be agreed separately.
The relevant test certificates must be observed when planning and carrying out work.
Larger quantities of leftover product should be disposed of in the original containers in accordance with the applicable regulations. Completely empty, clean containers should be recycled. Do not dispose of together with household waste. Do not allow to enter the sewage system. Do not empty into drains.
Safety / regulations
For further information on the safety aspects of transporting, storing and handling the product and on disposal and environmental matters, please see the current Safety Data Sheet.