mtdFlagship
Materials / Beginner
Walls and Plaster
Block, render and tile, starting from what really goes wrong on site.
Rani Kusumawardani
- Lessons
- 26
- Time
- 2h 42m
- Rating
- 4.8
- Learners
- 26.5K
J-MATSkill track
Materials
Choosing the right material and writing it on the drawing.
Courses
3
Lessons
62
Material
6h 26m
Pace
3 weeks at 20 minutes a day
Result
Materials Certificate
Track route
From foundation to roof.
Every floor stands on the one before it. Its height matches the length of its course, so you can see which part is heaviest.
- Roof: track exam
Materials Certificate
40 questions, 60 minutes, pass at 75 percent.
Start here
By the end you'll be able to
- 1Choose clay brick, concrete block or aerated block and explain why.
- 2Match the roof pitch to the chosen covering.
- 3Choose float, heat-strengthened, tempered, laminated or insulating glass to suit the location.
In this track
Courses in this track.
Chapter 1 of every course is free. With Pro, everything opens and your progress counts toward the track.
1
2
3
- mta
Materials / Intermediate
Roofing and Waterproofing
Leaks rarely start mid-span. Learn roofing materials and where they are weakest.
Rani Kusumawardani- Lessons
- 18
- Time
- 1h 52m
- Rating
- 4.7
- Learners
- 11.2K
- mtk
Materials / Intermediate
Glass, Aluminium and Paint
The outermost layers of a building, and why how they are made decides how they are used.
Rani Kusumawardani- Lessons
- 18
- Time
- 1h 52m
- Rating
- 4.7
- Learners
- 9.4K
Exam and certificate
What you take home.
A numbered certificate in your name that you can download and share. It isn't a professional competency certificate, but it's proof you can show.
Time
60 minutes
Questions
40
Pass mark
75 percent
Retake
7 days later
- 1Work through every course in this track.
- 2Take the exam when you're ready, there's no timetable.
- 3Pass, and the certificate appears in your account.
AcademyCertificate of completion
Awarded to
Laras Kinanti
who passed the timed track exam and completed every course in
Materials Certificate
Rani Kusumawardani
Chief examiner
- Number
- DA-MAT-2026-04817
- Exam
- 40 questions, 60 min
- Score
- 86 / 100
- Date
- 14 October 2026
Questions that come up
About exams and certificates.
01What's the difference between a skill track and a career track?
A skill track covers one subject end to end, such as Core Details, and closes with an exam and a certificate. A career track pulls courses from several subjects in the order one role needs them, such as Studio-Ready Drafter.
02What is the track exam like?
40 questions in 60 minutes: multiple choice, calculations and reading drawings. You pass at 75 percent. The clock keeps running once you start, so set aside a quiet hour.
03What if I don't pass?
You can retake it after 7 days. Your results show which parts are weak, so use the time to redo those chapters.
04What does the certificate count as?
It's proof you passed a Detarva Academy track exam. It isn't a professional competency certificate or a licence to practise. Many people use it in their portfolio when applying, and how much it counts is up to the employer.
05Can I share it online or print it?
Yes. Each certificate has its own number and can be downloaded as a PDF or shared through a link.
J-MATThe first floor is free
Start on floor one.
Chapter 1 of each course is open to you. Go on with Pro if it suits you.