Mapei Planicrete SP is a multipurpose SBR latex admixture used to improve the bonding and performance of compatible cement-based mixes. For professional screed work, it is particularly useful in preparing a bonding slurry between sound concrete and a new bonded screed, helping the layers form a reliable connection.
Planicrete SP is blended into specified cementitious slurry, mortar or render mixes rather than simply being brushed on as an interchangeable floor primer. It can also be used in compatible modified mortars and renders where improved adhesion and resistance to shock or vibration are needed. It is suitable for specified internal and external work.
Use a Planicrete SP bonding slurry when called for by the selected Mapei screed specification, such as certain Mapecem or Topcem systems. If the job uses Topcem Pronto Slurry, that is a dedicated preblended bonding slurry rather than the same product in a different container.
Think of a new bonded screed over an existing concrete slab. Even if the screed material is well chosen, the job can fail if the interface has not been properly prepared. Planicrete SP is used as part of specified cementitious bonding slurries to help create that connection, with wider uses in compatible modified mortars and renders.
Its advantage is versatility for experienced crews mixing a defined system on site. That is also why it should not be sold as a simple paint-on universal primer: the ratio of latex, cement, aggregate and water, together with the wet-on-wet sequence, changes with the intended application. For a dedicated ready-proportioned Topcem Pronto bonding layer, compare Topcem Pronto Slurry.
Follow the exact mixing ratios and application sequence for the chosen system, including placing the screed while the bond coat remains appropriately wet. Planicrete SP is an additive, not a standalone waterproof membrane or universal substrate sealer.
What is Planicrete SP?
It is an SBR latex additive for improving compatible cement mortars, screeds, renders and bonding slurries.
Can it be used neat as a primer?
No. MAPEI requires it to be combined with the specified cement or binder.
What application temperature range is used?
5°C to 40°C.
Can it be used in bonded screeds?
Yes, as part of the specified bonding slurry and screed system.
| Property | Value |
|---|---|
| Product Type | Synthetic-rubber SBR latex admixture |
| Consistency | Fluid liquid |
| Density | 1.02 g/cm³ |
| pH | 9-11 |
| Solid Content | 36% |
| Application Temperature | +5°C to +40°C |
| Service Temperature | -30°C to +90°C |
| Storage Conditions | 24 months in unopened original packaging; protect from frost |
| Pack Sizes | 25 kg, 10 kg and 5 kg tanks; 12 × 1 kg packages |
| Bonded Screed Thickness | 10–35 mm |
| Floating Screed Thickness | >35 mm |
| Bonded Screed Consumption | 40–50 g/m²/mm of thickness |
| Floating Screed Consumption | 30–40 g/m²/mm of thickness |
| Render Consumption | 60–70 g/m²/mm of thickness |
| Bonding Slurry Consumption | 300–310 g/m²/mm of thickness |
| Bonding Slurry Mix | 1 kg Planicrete : 1 kg water : 4 kg cement |
| Render Mix | 1 kg Planicrete : 4 kg water : 5.5 kg cement : 20 kg aggregate (0–3 mm) |
| Filler Mortar Mix | 1 kg Planicrete : 2.5 kg water : 8 kg cement : 16–24 kg aggregate (0–3 mm) |
| Mixing Time | 2–3 minutes; do not mix for more than 3 minutes in a concrete mixer |
| Floating Screed Cure Time | At least two weeks under normal temperature and humidity |
| Compressive Strength | 7 MPa after 1 day; 25 MPa after 7 days; 33 MPa after 28 days |
| Bond Strength | >2.0 MPa after 28 days at +21°C and 50% U.R. |
| Resistance to Damp | Excellent |
| UV Resistance | Excellent |
| Chemical Resistance | Mediocre |
| Resistance to Acids and Alkalis | Fair |
| Specific Gravity | Approx 1.01g/ml |
Here are some common examples on where Mapei Planicrete SP used by our customers.
