Rooftop Leakage is a problem that many homes face and often do not resolve completely, as most repairs address only the symptoms, such as fixing the ceiling, repainting, or sealing specific spots, but do not tackle the “root cause” of the issue. Therefore, the important question is not just “how to repair it,” but “how to fix it once and for all.” This article will explore a comprehensive step-by-step solution for rooftop leakage based on real cases, using Beger ROOFSEAL Cool which is a waterproof coating that helps both waterproofing and heat reduction in one system.
What causes rooftop leakage?
From field inspections of real cases, the main problems often found include:
- Deteriorated rooftop surface
- Cracks and porous holes
- Accumulation of mold and algae
- Lack of a complete waterproofing system
These issues allow water to seep into the structure and spread to the ceiling below.
How to fix rooftop leakage (Step-by-Step)
Step 1: Prepare the surface to be clean
Start by removing all dirt:
- Scrubbing the surface
- Spraying for cleaning
- Removing dust, stains, and mold
This step is very important because if the surface is not clean, the adhesion of the paint will immediately decrease.
Step 2: Eliminate mold and algae
Use Beger Mould Free M-001 to thoroughly saturate the surface.
Highlights:
- Eliminates mold down to the roots
- Can be left on without rinsing
Leave on for about 3 hours until completely dry
Step 3: Apply moisture-resistant primer
Use Beger Pro Quick B-1900
Highlights:
- Increases adhesion
- Prevents moisture
- Reduces the chance of mold growth
Apply evenly and let dry for about 4–6 hours
Step 4: Fill cracks
Before applying waterproofing, the weak points of the surface must be addressed first
- Small cracks Use Beger Acrylic Filler F-200
- Large cracks Use Beger Acrylic Sealant F-001
Fill all points to prevent water seepage
Step 5: Apply Beger ROOFSEAL Cool (3 coats)
Coat 1 (waterproofing primer)
- Mix color 3 : water 1
- Apply evenly
At the joints:
- Lay with Fiber mesh to reinforce the waterproofing material
- Paint over to strengthen
the second coat (to increase thickness)
- Use undiluted paint
- Apply evenly
the third coat (to finish)
- Reapply once more
- Leave for 12 hours before use
Results after resolving the issue
After completing all steps:
- The leakage problem is gone
- The surface is smoother
- Heat accumulation on the rooftop has clearly decreased
Why Beger ROOFSEAL Cool meets the needs
- Contains Graphene an innovation that helps strengthen the paint film
- Can withstand water pooling for up to 90 days
- Reflects heat up to 97%
- More than 700% elasticity reduces cracking
- Reduce the accumulation of mold and moisture
What surfaces can it be used on?
- Concrete rooftops
- Double wave tiles
- Metal sheets
- Cracked walls
- Synthetic wood
Key factors that ensure a “real” roof leak repair
From this case, it can be seen that an effective solution does not rely solely on the product, but on completing “every step”
From:
- Surface preparation
- Mold management or mold removal
- Crack sealing
- To properly applying the waterproofing system
When all steps work together correctly, problems that were previously unresolved can be fixed in one go
Review of roof waterproofing paint
Roof leak issues are not trivial, as they can cause damage to the house and may extend to the internal structure if left untreated for a long time. The correct solution is not just to “apply waterproof paint,” but to start with cleaning the surface, removing mold and moisture, sealing all cracks completely, and reinforcing before the actual waterproofing application. When all steps are completed and using Beger ROOFSEAL Cool which is a PU Hybrid waterproofing that is highly flexible, 100% waterproof, and helps reflect heat, it will help restore the rooftop’s strength, durability, and reduce heat inside the house in the long term. It can truly be said that “one application covers both leak prevention, crack prevention, and heat insulation.”
Product recommendations
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Beger ROOFSEAL Cool |
Beger Fiber Mesh |
FAQ Frequently Asked Questions about roof leaks
Q1: How many coats of waterproofing are necessary for optimal results?
A1 : It is recommended to apply at least 3 coats according to the system to achieve the appropriate film thickness, which helps to prevent water leakage effectively and extends the lifespan.
Q2 : If the surface has minor cracks, can I apply the waterproofing directly over it?
A2 : It is not advisable to apply immediately; you should always seal the cracks first.
- For small cracks, use Filler.
- For larger cracks, use Sealant.
To prevent re-cracking and water seepage in the future.
Q3 : Is it necessary to use fiber mesh in all areas?
A3 : It is not necessary to use it in all areas, but it should be used in risk points such as:
- Floor-wall joints
- Cracks
- Various corners
To help reinforce strength and reduce the chance of leakage.
Q4 : Does Beger ROOFSEAL Cool really help reduce heat?
A4 : Yes, it helps because it has the property of reflecting heat, which reduces the heat absorbed by the roof, resulting in a cooler interior.
Q5 : How long should I wait after application before it can be used?
A5 : You should wait about 12 hours before use to allow the waterproofing film to dry completely and achieve maximum effectiveness.
