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WATERPROOFING AND SEALING AUSTRALIA SINCE 1957

Crommelin Waterproofing Applicator Certification

Lesson 3 Quiz

Crommelin Waterproofing Applicator Certification Surface Preparation & Priming Lesson 3 Quiz

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Question 1 of 8

1. Question
What condition must the surface be before commencement of waterproofing?
- Uneven, dusty and friable.
- Damp and contaminated with dirt and oils.
- Poorly designed and installed.
- The surface must be sound, even, dry, dust and contaminant free.
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Question 2 of 8

2. Question
Why is it important to prime the surface before applying waterproofing membranes?
- To save on the amount of waterproofing membrane needing to be applied.
- To ensure that the surface is in the best condition to accept the coating without compromising membrane adhesion or performance.
- To add an un-needed step in the waterproofing process.
- It is not important to prime surfaces before applying waterproofing membranes.
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Question 3 of 8

3. Question
What determines the type of primer needed prior to waterproofing?
- The nature of the surface being waterproofed.
- The type of waterproofing membrane being applied.
- Environmental conditions, such as temperature and humidity.
- How long you have to complete the waterproofing project.
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Question 4 of 8

4. Question
When should Crommelin Surface Primer be used?
- On dense non-porous surfaces such as glazed tiles and polished concrete.
- On damp surfaces, when surface contaminants cannot be totally removed, or on dense substrates such as Scyon.
- On porous and dusty surfaces such as concrete, screeds and CFC sheet.
- When waterproofing in exterior situations.
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Question 5 of 8

5. Question
When should Crommelin Dampstop Primer be used?
- On porous and dusty surfaces such as concrete, screeds and CFC sheet.
- On dense non-porous surfaces such as glazed tiles and polished concrete.
- On damp surfaces, when surface contaminants cannot be totally removed, or on dense substrates such as Scyon.
- When waterproofing in interior situations.
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Question 6 of 8

6. Question
When should Crommelin Tile on Tile Primer be used?
- On damp surfaces, when surface contaminants cannot be totally removed, or on dense substrates such as Scyon.
- On dense non-porous surfaces such as glazed tiles and polished concrete.
- On porous and dusty surfaces such as concrete, screeds and CFC sheet.
- When waterproofing in exterior situations.
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Question 7 of 8

7. Question
When can Crommelin waterproofing membranes be applied without a primer?
- If applying more than 2 coats of waterproofing membrane.
- When the surface is extremely porous, dry and dusty.
- On clean, dry, dust and contaminant free surfaces.
- When the surface is damp.
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Question 8 of 8

8. Question
How do you know how much under-tile waterproofing membrane to apply?
- Calculate how many square meters of waterproofing are required and multiply that by the recommended membrane coverage rates – ensure that this full amount is applied during both coats. Alternatively, ensure the recommended minimum film is applied using a wet film gauge.
- Just apply like a paint and that should be enough.
- The exact amount of membrane required is not important.
- It is ok to just estimate the amount of membrane required to complete the project.
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Course Content

Crommelin & the importance of getting it right 1 Quiz

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Lesson Content

Waterproofing Standards 1 Quiz

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Lesson Content

Surface Preparation & Priming 1 Quiz

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Lesson Content

Crommelin Under-tile Waterproofing Membranes 1 Quiz

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Lesson Content

Bond-Breaking & Joint Reinforcement 1 Quiz

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Lesson Content

Membrane Application 1 Quiz

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Lesson Content

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