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K-MTAMaterials

Roofing and Waterproofing

Leaks rarely start mid-span. Learn roofing materials and where they are weakest.

Start chapter 1 freeEnrol in this course
Ø100336130+12.450A.P. ATAPROOF DRAIN Ø100 BESI COR+ SARINGAN KUBAH ALUMINIUMCLAMPING RING + BAUT SS M8MEMBRAN BAKAR 4MM 2 LAPISDIJEPIT CLAMPING RINGKERIKIL Ø20–40 SEKITAR DRAINPIPA AIR HUJAN PVC Ø100 AW+ COUPLING, LEM PVCGROUT NON-SHRINKDI LUBANG PELATSCREED PELINDUNG T.40INSULASI XPS T.50MEMBRAN BAKAR 4MMSCREED MIRING MIN. 1% KE DRAINPELAT ATAP BETON T.130, SUMP −40ILUSTRASI CONTOHBUKAN UNTUK KONSTRUKSI1K-MTAROOFING AND WATERPROOFINGSKALA 1:10
Level
Intermediate
Lessons
18
Time
1h 52m
Rating
4.7
Learners
11.2K
Updated
Sep 2026

After this course

What you'll be able to do yourself.

Roofs leak at screws, laps, drains and membrane edges. You learn to match pitch to covering, choose a waterproofing system to suit the place, then write details that can be tested before they are covered.

  1. 1Match the roof pitch to the chosen covering.
  2. 2Write a metal roof spec in generic terms: thickness, coating and fixing.
  3. 3Choose torch-on membrane, cementitious coating or liquid PU to suit the location.
  4. 4Read the layers of a roof drain and a membrane termination at a parapet.
  5. 5Calculate roof area, membrane rolls and coating quantities.

Good for

  • Drafters and junior architects who draw roofs and wet areas.
  • Site supervisors who inspect waterproofing before it is covered.
  • Estimators who need to understand a waterproofing system before pricing it.

Best taken after

Full syllabus

Chapter by chapter, nothing hidden.

18 lessons, 1h 52m in total. Chapter 1 is open to everyone.

Chapter 1Roof coveringsFreeEach covering has its own pitch, weight and way of failing.6 lessons / 37 min
  1. Pitch belongs to the material5 min
  2. Metal roofs: coating, screws and expansion5 min
  3. Roof covering words4 min
  4. Work out pitch, area and tiles7 min
  5. A new roof leaking at the screws6 min
  6. Chapter test: roof coverings10 min
Chapter 2Choosing a waterproofing systemNo system is best. The right one depends on where it goes.6 lessons / 36 min
  1. Membrane, coating or liquid PU5 min
  2. The right base before waterproofing5 min
  3. Build up the roof drain layers6 min
  4. Find the mistakes in the roof drain6 min
  5. Waterproofing words4 min
  6. Chapter test: waterproofing systems10 min
Chapter 3Weak points and testingMembrane edges, drains and the flood test decide whether a roof leaks.6 lessons / 39 min
  1. Upstands, terminations, drains and flood tests5 min
  2. Change the parapet parameters5 min
  3. Work out membrane and coating7 min
  4. Read the roof drain model6 min
  5. The flood test that failed6 min
  6. Chapter test: weak points10 min

Lesson kinds

  • Concept
  • Glossary
  • Calculate
  • Site case
  • Chapter test
  • Layer Stack
  • Spot the Fault
  • Slide the Parameter
  • Read a model

Get a feel for it

You practise, you don't just watch.

Try it: Slide the ParameterIllustration, not for construction
Ø100336130+12.450A.P. ATAPROOF DRAIN Ø100 BESI COR+ SARINGAN KUBAH ALUMINIUMCLAMPING RING + BAUT SS M8MEMBRAN BAKAR 4MM 2 LAPISDIJEPIT CLAMPING RINGKERIKIL Ø20–40 SEKITAR DRAINPIPA AIR HUJAN PVC Ø100 AW+ COUPLING, LEM PVCGROUT NON-SHRINKDI LUBANG PELATSCREED PELINDUNG T.40INSULASI XPS T.50MEMBRAN BAKAR 4MMSCREED MIRING MIN. 1% KE DRAINPELAT ATAP BETON T.130, SUMP −40

Slide the value. The drawing follows, just like in the lessons.

A larger drain sheds water faster, but the slab opening grows too. The final size comes from the plumbing engineer's calculation.

Illustration, not for construction

Your creator

Taught by someone who still does the work.

Your creator

Rani Kusumawardani

Materials specialist

A practitioner who teaches from their everyday work.

Courses
3
Learners
47.1K

Other courses

About becoming a creator

Learner reviews

From people who took it.

4.7out of 5

984 reviews

  • 572%
  • 420%
  • 36%
  • 21%
  • 11%

  • Yohana Simanjuntak

    Junior engineer

    I used the tile chapter notes in a meeting with the contractor.

  • Fikri Hidayat

    Drafter, 2 years in a studio

    I finally stopped writing brand names on drawings. My specifications are much tidier.

  • Putri Ayuningtyas

    Architecture graduate

    The material comparisons are honest, including when not to use one.

Questions that come up

About this course.

All questions

01

What can I try for free?

All of chapter 1, "Roof coverings": 6 lessons, about 37 min. No card needed. If it isn't for you, stop there.

02

What should I know before starting?

It helps to have finished Walls and Plaster first. It isn't locked, but the chapters assume you know that material.

03

Subscribe or buy this course?

Pro is Rp149.000 a month and opens every course, track, exam and certificate. Buying this course is Rp279.000 once and it stays yours. If you plan to take more than two courses, Pro usually comes out cheaper.

04

Do I get a certificate?

Certificates come from track exams, not single courses. This course counts toward Materials, Cost Estimator. The exam runs 60 minutes and you pass at 75 percent.

05

Can I use these drawings on a project?

No. Every drawing in the course is an illustration for learning, not for construction. Use them to understand the logic, then follow your firm's standard and your engineer's drawings.

Part of

This course counts toward these tracks.

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K-MTAStart with chapter 1

Roofing and Waterproofing free.

No card needed. If it suits you, go on with Pro or buy this course.

Start chapter 1 freeSee plans, Rp149.000