Kreidezeit alum priming salt 1 kg
Kreidezeit
Regular price:
€15.30
Content:
1 Kilogram
Available, delivery time: 2-5 days
Product number:
11-201
Product information "Kreidezeit alum priming salt 1 kg"
Alaun priming salt, to be mixed with water, acts as a barrier primer against discolouration and stains seeping through from old substrates. These include, for example, water marks, discolouration from residual paste and the like.
Alum, also known as potassium sulphate, is a salt that is highly soluble in warm water. It is used, amongst other things, as a haemostatic agent in shaving sticks, as a deodorant crystal or as a primer in distemper painting.
The sealing effect results from chemical reactions with lime that has not yet set, low solubility in cold water, and the closure of plaster capillaries. It should be noted that the chances of success increase the faster the coat of paint dries. As a rule, the salt cannot be used to treat nicotine stains either, and it scarcely exhibits its barrier properties on old plaster.
It is advisable to treat lime plasters and lime paints with alum shortly after they have dried, as this improves the barrier effect.
Applying a thick layer of filler to primed surfaces is not recommended, as the drying time may be too long and the moisture could cause the alum and the bound pigments to dissolve again.
An advantage over comparable products is that alum has only a minor effect on the surface’s vapour absorption.
Success cannot be guaranteed. However, the chances of success are so high that it is worth trying, and this depends directly on the work being carried out professionally. Further information can be found in the product information and the safety data sheet.
Properties
Salt to be mixed with water
barrier
vapour-permeable
Solvent- and emission-free, odourless
reduces absorbency
hardening
acidic, pH 3–3.5 in a 10 per cent solution
mildly disinfectant
vegan
Full ingredient list
100% potassium aluminium sulphate x 12 H₂O
Preparing the primer
Dissolve the primer salt in warm water whilst stirring (time: approx. 5 mins). The warmer the water, the more salt dissolves. A sediment of salt crystals is normal and indicates that the solution is saturated. Do not use the sediment in the mixture.
Water requirement:
Dissolve approx. 100 g of alum priming salt in 1 litre of water.
Substrate requirements
Surfaces must be completely dry and absorbent!
Application
Allow new lime plaster or lime paint to dry out completely.
Apply the alum solution until the substrate is saturated (brush or spray on, do not roll!). Application temperature at least 8°C.
Allow to dry completely.
Sweep away any excess alum (salt crystals).
Paint over with Kreidezeit lime putty paint, lime bonding plaster, lime finish or another suitable Kreidezeit wall paint. Ensure rapid drying.
Drying time
Dry and ready for further work after 24 hours at the earliest, depending on room conditions
Suitable tools
Suitable tools include good-quality façade and ceiling brushes. Do not spray or roll.
Cleaning the tools
With water immediately after use.
| Areas of application: | Lime plasters, Substrate preparation / priming, Wall coating |
|---|---|
| Manufacturer: | Kreidezeit |
| Packaging: | Pouch/Bag |
| Pack size: | 1kg, 3 kg |
| Product group: | Paints and primers |
| Product line: | Kreidezeit alum priming salt |
| Shipping: | Collection available, Parcel shipping |
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