Trubuild Walltect Topcoat

Areas of Application for Trubuild Walltect Topcoat

Trubuild Walltect Topcoat is a versatile exterior wall waterproofing solution that provides superior protection for multiple surfaces, ensuring durability and long-lasting performance.

• Facades

  It enhances the exterior’s visual appeal while protecting against weathering and environmental damage, ideal for waterproofing external walls of buildings.

• External Walls

  This exterior wall waterproofing topcoat offers robust waterproofing and safeguards surfaces from moisture, dirt, and wear over time.

• Masonry Walls

  Provides excellent protection for masonry walls by improving adhesion and offering resistance to water penetration and deterioration.

• Exterior RCC

  The topcoat is ideal for exterior RCC surfaces, offering protection from water ingress and preventing cracks that can weaken the structure.

• Cement Sand Rendering

  It effectively protects cement sand renderings by sealing out water and enhancing the durability of the surface.

Trubuild Walltect Topcoat is the go-to solution for keeping all these surfaces safe from water damage and ensuring long-term protection.

Features of Trubuild Walltect Top Coat

Trubuild Walltect Topcoat is designed with numerous features that ensure exceptional performance and durability for exterior waterproofing. 

• The exterior wall waterproofing solution provides excellent resistance to water penetration which ensures durable protection for exterior walls.
• The exterior wall coating is UV resistant and protects the exterior walls from the degrading effects of ultraviolet rays.
• It is highly breathable and allows internal moisture to escape, preventing condensation build-up.
• This exterior waterproofing solution is suitable for application on slightly damp surfaces, which enhances its adaptability to various weather conditions.
• The topcoat for waterproofing external walls requires no additional protective layers, simplifying the application process and reducing overall project time.
• It can be tinted to achieve desired colours, offering aesthetic flexibility to meet specific design requirements.
• The exterior wall coating ensures strong adhesion to various substrates, providing a durable and resilient finish.
• It is resistant to fungal growth, which helps maintain the integrity and appearance of exterior walls.
• Trubuild Walltect Topcoat features excellent elongation and crack bridging capabilities, effectively covering minor cracks and accommodating structural movements.
• The exterior wall waterproofing solution boasts a high Solar Reflective Index (SRI) value, contributing to cooler building surfaces and improved energy efficiency.
• It provides resistance against carbonation and chlorides, protecting structural elements from environmental aggressors and extending the lifespan of the facade.

Trubuild Walltect Topcoat for waterproofing external walls offers unmatched protection and durability, making it the ideal choice to preserve your building in its truest form.

How to Apply Trubuild Walltect Topcoat Exterior Waterproofing Solution?

• Surface Preparation

Getting the surface right is key to the success of your exterior wall waterproofing project. Follow these essential steps to ensure maximum adhesion and a flawless finish.

• Remove Contaminant

For existing structures, remove all loose, unsound materials, oil, dirt, debris, old paint, and any surface contaminants like old exterior wall coatings or other impurities.

• Treat Algae and Fung

Treat all areas affected by algae, moss, or fungi with a biocide wash solution. Use pressure cleaning equipment with a minimum capability of 100-140 bar water pressure for thorough cleaning.

• Prepare New Construction Surface

For new construction, remove all loose unsound materials, grease, oils, etc., using emery paper or high-pressure water blasting.

• Fill Crack

Fill all cracks up to 5mm by creating a “V” groove and then filling it with Trubuild Crack Filler Paste (CFP 425). For cracks larger than 5mm, use a polymer-modified mortar mixed with Trubuild WPL 333 or Trubuild BWP 222.

Application

• Apply Primer

  Before waterproofing external walls with the topcoat, a primer coat should be applied using Trubuild Primesure Primer. This ensures proper bonding of the topcoat to the substrate.

• Ensure Saturated Dry Condition (SSD)

  Ensure that the surface is in a Saturated Dry Condition (SSD) before you apply the primer. This means the surface should be moist but not wet.
  

• Mix Primer
  

  To fill the pores on the surface and ensure good bonding with the upcoming waterproofing layer, mix Trubuild Primesure Primer with water in a 2:1 ratio (50% dilution with water). Mix thoroughly with a low RPM paddle mixer to get a homogeneous mixture.
  

• Apply Primer Coat

  The primer should be applied at a coverage rate of approximately 8-10 sq.m. per litre, depending on the substrate condition. Apply the primer evenly over the surface and allow it to dry for 6-8 hours.
  

• Apply the First Coat of Walltect Topcoat
  

  Once the primer coat dries, apply the 1st coat of exterior wall waterproofing topcoat horizontally without dilution. The coverage rate should be maintained at 35-40 sq.ft. per litre for two coats. Allow the first coat to dry for 6-8 hours.
  

• Apply a Second Coat of Walltect Topcoat

  After the first coat dries, apply the 2nd coat of the crack bridging topcoat vertically without dilution. The application coverage should remain consistent at 35-40 sq.ft. per litre for the double coats.
  

• Allow Coating to Cure

  After the 2nd coat, allow the topcoat to air-cure for a minimum of 7-10 days. This curing time ensures that the coating achieves its full performance capabilities.

Repainting

Repainting requires careful preparation to ensure proper adhesion and a flawless finish. Follow these steps to ensure your new coat of Trubuild Walltect Topcoat adheres perfectly and performs at its best.

1. Check the Condition of Existing Paint

   The performance of the crack bridging topcoat will depend on the condition of the existing paint. If the paint is flaking or poorly bonded, it could affect the adhesion of the new coat.
   

2. Prepare the Surface

   If the surface is in good condition (stable, no peeling or flaking), Trubuild Primesure Primer is not necessary. Ensure the surface is clean and free of loose particles before proceeding.
   

3. Apply First Coat
   

   Apply the 1st coat of the exterior wall waterproofing topcoat horizontally without dilution. Allow it to dry for 6-8 hours.
   

4. Apply Second Coat

   Once the first coat has dried, apply the 2nd coat vertically, without dilution, ensuring proper coverage.
   

5. Coverage and Additional Coats 
   

   The application coverage should be 35-40 sq.ft. per litre for two coats. Apply an additional coat of the exterior waterproofing solution to cover dark shades or achieve a more even finish if needed.
   

6. Allow to Cure

   Allow the exterior wall coating to air-cure for 7-10 days to ensure full curing and optimal performance.

These steps will ensure a successful and durable repainting result, restoring your exterior walls to their best condition.

Limitations and Precautions

Follow these key guidelines and precautions to ensure the best performance and durability of Trubuild Walltect Topcoat exterior wall coating. 

• Before waterproofing external walls with the topcoat, ensure that the base coat and primer have been properly applied for the best results.

• Make sure you use the correct amount of material to achieve the full waterproofing benefits and ensure long-lasting protection.

• After opening the container, mix the external wall coating well using a low RPM paddle mixer to make sure it’s evenly blended.

• Avoid applying the topcoat during rain or on surfaces with standing water, as it could affect its performance.

• Do not use the exterior wall waterproofing solution on water-retaining structures, as it is meant for protective, exterior coatings only.

• Ensure the substrate temperature is between 10°C and 35°C, and the relative humidity (RH) is below 75% before application.

• Once you open the container, use all of it in one go to prevent contamination.

• Do not add any water or emulsion to the topcoat, as it will reduce its durability and performance.

• Always use a clean brush and roller for the best application, ensuring no foreign material gets into the coating.

• Keep the material in a shaded area, tightly sealed to avoid skinning. Avoid storing it under direct sunlight.

• Take out only the amount of the exterior wall waterproofing you can use within 15-30 minutes to prevent contamination.

• Before applying, use an air blower (not hot air) to remove any dust from the surface for proper adhesion.

• Use Trubuild Primesure Primer as compatibility with other primers is not tested.

• Always follow the application steps carefully, as skipping any may reduce the performance of the system.

• If you are working with a different type of surface, contact the Trubuild technical service team for guidance before starting.

• Always use a clean brush and roller to avoid contamination, which could cause the waterproof coating to peel off.

• Make sure the coverage is as recommended to get the best waterproofing result.

• Always read the guidelines and consult a Trubuild technical sales representative before starting the application to prevent issues.

• The adhesion may be affected on putty or very smooth surfaces, so extra care should be taken.

• If the surface has excess moisture, it can cause blistering in the coating, so ensure the surface is dry before applying.

• Remove any old cement paint or peeling paint from the surface to ensure proper bonding of the new coat.

• Avoid using the topcoat for waterproofing external walls on putty or synthetic paints as they can interfere with adhesion.

• Make sure the substrate is fully cured as per standard construction practices before applying the coating.

• Clean the applied surface every 3 months to prevent the build-up of fungi, algae, or moss, keeping the coating effective.
• Ensure the surface remains dry during routine cleaning to maintain the integrity of the Walltect Topcoat.

Theoretical Coverage

• Trubuild Primesure Primer: 8-10 sq.m./L/coat
• Trubuild Walltect Topcoat: 35-40 sq.ft./L/2 coats to achieve 120±10 DFT.

Note: Coverage may vary based on the porosity and undulation of the substrate.

Storage

Store the topcoat for waterproofing external walls in a dry place, in its original, tightly sealed container, at temperatures between 2°C and 40°C. Once opened, seal the container immediately to avoid contamination.

Shelf Life

Trubuild Walltect Topcoat has a shelf life of 36 months from the date of manufacturing.

Safety

• Avoid contact with eyes and skin. In case of eye contact, rinse thoroughly with water and consult a doctor.
• Wear appropriate protection gloves, goggles, and face protection during application.
• If swallowed, seek immediate medical advice and present the pack label.

Handling Precautions

• Follow all recommended industrial hygiene procedures during handling and processing.
• For more information, refer to the Material Safety Data Sheet (MSDS).