KingRep 1®
One-component polymer-modified cementitious fairing coat and cosmetic repair mortar, applied by brush or roller.
SpecWorld has the Spec Pack, CSI specification and drawings for registered specifiers.
- Compressive strength, wet cure ASTM C109/C109M
- ≥ 10 MPa @ 28 days
- Flexural strength, wet cure ASTM C348
- ≥ 4 MPa @ 28 days
- Tensile strength, wet cure ASTM C190
- 1.5 MPa @ 28 days
- Bond strength ASTM C1583
- ≥ 1.5 MPa @ 28 days
Overview
KingRep 1 is a one-component, acrylic polymer-modified powder. Mixed with water, it gives a consistent, smooth and fine cementitious coat that can be applied by brush or roller.
Where to use
- Repair of fair-faced concrete.
- Thin-layer render.
- Skim coat over pinholes and minor honeycombing.
- Pore sealer and levelling coat.
- A uniform surface for a subsequent paint finish.
Why use it
- Shrinkage-controlled polymer-modified mortar, which reduces the risk of cracking.
- Easy to apply: one component, needs only the addition of water.
- Excellent adhesion to concrete: no separate primer or curing is needed.
- Compatible with other protective coatings.
- Can be applied to a feather edge.
- Suitable for internal and external use.
- Cost-effective: applied by hand, no formwork needed.
Technical properties
| Colour | Grey, white |
|---|---|
| Working life | 40 - 60 min @ 25°C |
| Setting time | 2 - 3 hr @ 25°C |
| Mixed density | 1.7 ± 0.1 g/cm³ |
| Compressive strength, wet cure (ASTM C109/C109M) | ≥ 10 MPa @ 28 days |
| Flexural strength, wet cure (ASTM C348) | ≥ 4 MPa @ 28 days |
| Tensile strength, wet cure (ASTM C190) | 1.5 MPa @ 28 days |
| Bond strength (ASTM C1583) | ≥ 1.5 MPa @ 28 days |
| Coefficient of thermal expansion | 6.5 - 12 × 10⁻⁶ /°C |
| Maximum aggregate size | 0.1 mm |
| Application thickness | Feather edge to 1 mm per coat Up to 3 mm in coats |
| Application temperature | 5 - 35°C |
| Water per 25 kg bag | 7.5 - 8.5 litre |
| VOC (ASTM D2369) | < 10 g/l |
How to use
Method of use
Substrate preparation
All surfaces must be clean, sound and free from contamination. Clean the prepared area thoroughly by brush and/or compressed air, and soak it with water immediately before applying KingRep 1.
Priming
No separate primer is needed.
Mixing
Use a mechanical mixer or a drill fitted with a suitable paddle; small quantities can be mixed by hand with suitable tools in a bucket. Pour 7.5 - 8.5 litre of clean water per 25 kg bag into a clean container, then add the powder slowly while mixing continuously at low speed (400 - 600 rpm). Mix for 3 minutes until the consistency is uniform.
For higher scratch resistance, replace 50% of the mixing water with KingBond SBR100.
Placing and finishing
Apply KingRep 1 to the prepared substrate by brush or roller, from a feather edge to 1 mm per coat. Build up to 3 mm in further coats.
Curing
No curing is needed in normal conditions. In harsh weather, such as high wind or high temperatures, cure with KingKure 100A or with wet hessian covered by polyethylene.
Cleaning
Clean all tools with water immediately after use. Hardened material can only be removed mechanically.
Coverage, packaging and storage
Yield
Approximately 19.5 litre of mortar per 25 kg bag.
Packaging
KingRep 1 is available in 25 kg bags.
Storage
Shelf life is 1 year when stored under cover, out of direct sunlight and protected from extremes of temperature.
Failure to comply with the recommended storage conditions may result in premature deterioration of the product or packaging. For specific storage advice consult KingKrete's Technical Services Department.
Health and safety
As with all chemical products, care should be taken during use and storage to avoid contact with eyes, mouth, skin and foodstuffs. Treat splashes to eyes and skin immediately. If accidentally ingested, seek medical attention. Reseal containers after use. Use in well ventilated areas and avoid inhalation of dust.