Crepi ADDMIX is a carefully formulated blend of chemical additives designed to be mixed with basaltic rock sand and Ordinary Portland Cement (CEM II) to produce high-quality traditional rendering mortars. The additive improves workability, adhesion, and finishability while reducing cracking and increasing open time for easier application.
Available Pack Sizes
• 1.00 kg
In Stock
| Property | Specification |
|---|---|
| Base | Specialised blend of polymeric and cement-compatible chemical additives |
| Appearance | Free-flowing powder |
| Typical Dosage | Add to cement at manufacturer recommended dosage (typical range: 1–3% by weight of cement) |
| Effect on Mortar | Improves workability, reduces cracking, increases open time and adhesion |
| Compatibility | Designed for use with basaltic rock sand and CEM II cement |
| Shelf Life | 12 months in original sealed packaging |
| Storage Conditions | Store dry, away from moisture and direct sunlight; keep bags sealed |
It is used as an additive with basaltic rock sand and CEM II cement to produce rendering mortars with improved workability, adhesion and reduced cracking.
Typical dosage is 1–3% by weight of cement. Always follow the manufacturer’s recommended dosage and perform a trial mix.
It’s formulated for use with basaltic rock sand as specified, but it may be used with other suitable sands — perform trial mixes to confirm performance.
Crepi ADDMIX is a powder additive and generally has minimal effect on colour; for coloured or decorative renders, do a sample trial first.
It improves adhesion and reduces cracking but is not a waterproofing membrane. Use appropriate waterproofing products where full water resistance is required.
Yes — it is suitable for repair mortars and leveling coats to improve workability and reduce shrinkage cracks.
Store in original sealed packaging in a cool, dry place away from moisture and direct sunlight. Shelf life is typically 12 months.
No special equipment — mix into the dry sand–cement blend and then add water; use standard mixers for best consistency.
It can be used in a wide range of temperatures, but always follow good site practices (avoid extreme temperatures) and adjust water and curing methods accordingly.
Standard curing practices apply. Because Crepi ADDMIX can increase open time, ensure appropriate protection from rapid drying or rain during the extended working period.
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