Professional Skylight Waterproofing Service – Complete Leak Repair, Steel Frame Reinforcement & Old Roof Restoration

Skylights are areas constantly exposed to harsh sunlight, heavy rain, and high humidity. After years of use, areas such as roof joints, drainage channels, steel frames, wall surfaces, and translucent roofing panels can deteriorate easily, causing long-term water leakage problems.

In the actual project below, the construction team carried out a complete waterproofing solution for the skylight area, including steel frame reinforcement, drainage waterproofing treatment, exterior wall restoration, and replacement of deteriorated components to ensure long-term durability for the building.

1. Initial Site Inspection & Damage Assessment

After the on-site inspection, several signs of deterioration were identified:

  • The old skylight plastic roof had become brittle and weathered.
  • The steel frame showed rust and weakened joints.
  • Roof connection gaps allowed water penetration.
  • Drainage channels around the skylight were leaking.
  • The exterior wall coating had peeled due to long-term water absorption.

If these issues are not treated comprehensively, rainwater will continue seeping into the building during heavy rainfall.

2. Removal of the Old Skylight Roof

First, the construction team removed the deteriorated plastic roof panels to prepare for the reinforcement and overall waterproofing process.

Removing the old skylight roof

The old skylight plastic roof had become brittle and deteriorated after years of use

Completely removing the old materials makes it easier to inspect the underlying structure and avoids ineffective overlay waterproofing methods.

3. Steel Frame Reinforcement & Additional Welding

After removing the roof covering, the team installed additional steel box sections to improve the strength and stability of the skylight frame.

Reinforcing the skylight steel frame

Welding and reinforcing the steel frame for the skylight area

After welding completion, all steel surfaces were further:

  • Polished to remove rust.
  • Treated for metal surface preparation.
  • Coated with anti-rust protective paint.
Polishing and anti-rust treatment for steel frame

The steel frame was polished and coated with anti-rust protection before final completion

This process helps extend the structural lifespan and minimizes oxidation in outdoor environments.

4. Waterproofing Treatment for Skylight Drainage Channels

One of the most common causes of leakage is standing water in the drainage channels surrounding the skylight.

The construction team performed the following tasks:

  • Cleaning the entire drainage system.
  • Repairing cracks and open joints.
  • Applying multiple layers of specialized waterproof coating.
Applying waterproof coating to skylight drainage channels

Applying waterproof coating to the skylight drainage channel area

In addition to waterproofing the floor and drainage areas, the team carefully sealed the joints between the steel frame and metal roofing to minimize the risk of water intrusion.

5. Removing Old Paint & Exterior Wall Surface Preparation

For the exterior walls affected by long-term leakage, the old paint layer had severely peeled and faded.

To ensure proper adhesion of the new waterproof coating, the team carried out:

  • Removal of old paint layers.
  • Cleaning of wall surfaces.
  • Washing away moss, algae, and dirt buildup.
Removing old paint from exterior walls

Removing old paint and preparing the surface before waterproofing

After surface preparation, the first waterproof coating layer was evenly applied across the entire exterior wall area.

Applying waterproof coating to exterior walls

Applying the first waterproof coating layer to the exterior wall area

6. Final Completion & Waterproofing Inspection

After completing all work items:

  • The steel frame was firmly reinforced.
  • The drainage channels were fully sealed.
  • The exterior walls received comprehensive waterproof protection.
  • All connection joints were carefully treated with specialized waterproof materials.

The entire project was then thoroughly inspected to ensure proper drainage performance and waterproofing stability before handover.

Why Is Proper Skylight Waterproofing Important?

Skylight waterproofing is not simply about applying a waterproof coating onto surfaces. Without proper technical treatment, water can still penetrate through tiny gaps and cause leakage again after a short period.

A professional waterproofing process should include:

  • ✅ Identifying the actual source of leakage
  • ✅ Thorough crack and joint treatment
  • ✅ Reinforcing deteriorated structural components
  • ✅ Applying multiple suitable waterproofing layers
  • ✅ Testing drainage performance after completion

We Provide Skylight – Rooftop – Exterior Wall Waterproofing Services

Our services include:

  • Skylight waterproofing.
  • Rooftop waterproofing.
  • Exterior wall waterproofing.
  • Metal roof leak repair.
  • Crack repair and pipe collar waterproofing.
  • Steel frame reinforcement for roof structures.

We are committed to:

  • On-site inspection and consultation.
  • Accurate assessment of existing conditions.
  • Careful construction following proper procedures.
  • Using suitable materials for each work item.

Contact VietSonic Today

Let VietSonic help protect your building from water leakage effectively and permanently.