709 MMA Damp Proof Primer has been developed as a primer for damp concrete, being used prior to any of our MMA range of coatings, mortars, and screeds.
The product exhibits outstanding adhesion to damp concrete, and the fast curing characteristics allow rapid application of subsequent coatings, mortars or screeds.
709 MMA Damp Proof Primer is supplied as a three pack material, comprising pre-weighed amounts of Base, Catalyst and Filler components.
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Features & Benefits
- For use on damp concrete
- To be used prior to any of the MMA range of coatings, mortars, and screeds
- Rapid cure, even at low temperatures - from as low as -30°C*
- Very good chemical resistance
- Excellent adhesion
- Impervious to water
- Pre-packed units ready for use
- Can be overcoated after 30 minutes @ 20°C
- 5kg pack is sufficient to prime an area of 6-12m²
- Easily applied
- Three pack
- Suitable for 7 day old concrete
*Please consult our Technical Department on 0113 2455450 (option 2) or send a message to [email protected]
Typical Properties
| Technical Data |
| |
709 MMA Damp Proof Primer |
| Viscosity: |
250 - 400 cps @ 20°C |
| Pot life @ 20°C: |
8 - 12 minutes |
| Pot life @ 10°C: |
10 - 15 minutes |
| Adhesion to damp concrete: |
3.5MPa (concrete failure) |
| Temp. range during application: |
-30°C* to + 40°C |
| Temp. range during service: |
-40°C to + 60°C |
*Please consult our Technical Department on 0113 2455450 (option 2) or send a message to [email protected]
Coverage
- A 5kg pack is sufficient to prime an area of 6-12m²
Surface Preparation
- Concrete surfaces shall be a minimum of 7 days old
- Ensure that the concrete is clean and free from dust, laitance, grease, oil, curing compound, and existing paint finishes, etc
- Suitable mechanical treatment such as vacuum grit blasting or mechanical scabbling is recommended to ensure the removal of contaminants and to provide a mechanical ‘key’ for the primer
- Ensure that no standing water is present on the surface
Mixing:
- Pour the contents of the Catalyst container into the Base container, add the Filler component, and thoroughly mix, preferably by mechanical means
Mixing Ratio:
- (% Catalyst by Weight) = 2
Application
- Apply by squeegee to distribute evenly over the floor, and then use a long nap lambswool roller to achieve a nominal application rate of 0.4-0.8kg/m², depending on substrate absorbency
- Allow to cure for a minimum of 30 minutes prior to applying any other MMA products from the range
- For temperatures below 5°C please contact our Technical Department on 0113 2455450 (option 2) or send a message to [email protected] for advice
Cleaning
Curing
- Minimum overcoating interval: 30 minutes @ 20°C
Limitations
- Do not apply to concrete surfaces which have standing water present, or are less than 7 days old
- The product does not replace the need for a separate damp proof membrane
709 MMA Damp Proof Primer will taint food during application, so that all foodstuffs in the immediate vicinity must be removed or properly covered
Storage & Shelf Life
- Store in dry conditions, out of direct sunlight, at temperatures between 10°C and 20°C
- Adequate ventilation of the storage area should be provided
- Keep container tightly closed when not in use
- 709 MMA Damp Proof Primer has a minimum shelf life of 6 months when stored in original, unopened containers in accordance with manufacturer’s instructions
Health & Safety
709 MMA Damp Proof Primer is flammable during application, so adequate safety precautions should be observed.
- Avoid contact of the material with skin and eyes
- Wear gloves and goggles
- Wash off splashes immediately with soap and water
- Any eye contamination must be rapidly irrigated with copious amounts of clean water, and immediate medical attention sought
- Please refer to Material Safety Data Sheet for additional information
- 709 MMA Damp Proof Primer shall be applied strictly in accordance with the manufacturer’s instructions
For specific advice regarding any aspect of this product, please consult our Technical Department on 0113 2455450 (option 2) or send a message to [email protected]
