Repair Cracks on Interior Walls & Floors

Choose an exterior area to view our recommended full-system solutions

System Solutions for Hairline Cracks on Walls

Fine interior wall cracks measuring 0.1 to 0.3mm are generally surface-level and can be treated with flexible fillers before repainting. Cracks between 0.3 to 2mm, however, require proper preparation to not only conceal but also reinforce the weakened area. Nippon Paint’s Bare-to-Finish Solutions for Hairline Cracks on Walls ensure effective sealing and help prevent crack visibility after painting, so you can create your most beautiful home.

Choose a section of the interior area to view our recommended full-system solutions
5 Paint (Second Coat)
4 Paint (First Coat)
3 Sealer
2 Sanding
1 Putty
1

Putty

EasySKIM PLUS 2000

Apply putty to fill cracks and cover surface flaws, creating a smooth base for a better paint finish.

5 Paint (Second Coat)
4 Paint (First Coat)
3 Sealer
2 Sanding
1 Putty

2
Nippon Paint Abrasive Waterproof Sandpaper packaging featuring product details and usage instructions. Ideal for achieving smooth finishes on various surfaces, the sandpaper measures 230x280mm and is suitable for wood, metal, and plastic applications.

Sanding

Abrasive Waterproof Sandpaper

Lightly sand the surface to even out imperfections and ensure strong bonding for the next coating layers.


3
Nippon Paint Hi-Bond Wall Sealer canister for exterior and interior use, designed to enhance adhesion on plaster ceilings and skimcoat surfaces. Ideal for repairing powdery surfaces, this solvent-based sealer ensures a smooth finish.

Sealer

Hi-Bond Wall Sealer

Apply a coat of sealer to form a uniform surface that allows paint to adhere more effectively.


4
Nippon Paint Spot-Less Plus Sheen interior paint can featuring Silver Ion Technology, designed for exceptional hiding power and vibrant color. Best in class for minimum spattering and smooth finish.

Paint (First Coat)

Spot-Less Plus Sheen

Apply the first topcoat to provide base colour coverage and initial surface protection.


5
Nippon Paint Spot-Less Plus Sheen interior paint can featuring Silver Ion Technology, designed for exceptional hiding power and vibrant color. Best in class for minimum spattering and smooth finish.

Paint (Second Coat)

Spot-Less Plus Sheen

Apply a second topcoat to deepen colour richness and provide added protection against wear.

6 Paint (Second Coat)
5 Paint (First Coat)
4 Sealer
3 Sanding
2 Putty
1 Surface Preparation
1

Surface Preparation

Prepare the surface by cleaning and widening the crack to ensure the repair compound penetrates deeper into the surface. Lightly wet the crack before patching.

6 Paint (Second Coat)
5 Paint (First Coat)
4 Sealer
3 Sanding
2 Putty
1 Surface Preparation

2
Nippon Paint CrackRepair 1000, a ready-to-use crack repair solution, designed to fill medium cracks up to 2mm, offering flexibility to prevent recurring cracks. Ideal for both exterior and interior applications, it provides minimal shrinkage and is weather resistant.

Putty

CrackREPAIR 1000

Apply putty to repair cracks, holes, and surface defects, restoring structural integrity and creating a uniform surface.


3
Nippon Paint Abrasive Waterproof Sandpaper packaging featuring product details and usage instructions. Ideal for achieving smooth finishes on various surfaces, the sandpaper measures 230x280mm and is suitable for wood, metal, and plastic applications.

Sanding

Abrasive Waterproof Sandpaper

Lightly sand the surface to even out imperfections and ensure strong bonding for the next coating layers.


4
Nippon Paint Hi-Bond Wall Sealer canister for exterior and interior use, designed to enhance adhesion on plaster ceilings and skimcoat surfaces. Ideal for repairing powdery surfaces, this solvent-based sealer ensures a smooth finish.

Sealer

Hi-Bond Wall Sealer

Apply a coat of sealer to form a uniform surface that allows paint to adhere more effectively.


5
Nippon Paint Spot-Less Plus Sheen interior paint can featuring Silver Ion Technology, designed for exceptional hiding power and vibrant color. Best in class for minimum spattering and smooth finish.

Paint (First Coat)

Spot-Less Plus Sheen

Apply the first topcoat to provide base colour coverage and initial surface protection.


6
Nippon Paint Spot-Less Plus Sheen interior paint can featuring Silver Ion Technology, designed for exceptional hiding power and vibrant color. Best in class for minimum spattering and smooth finish.

Paint (Second Coat)

Spot-Less Plus Sheen

Apply a second topcoat to deepen colour richness and provide added protection against wear.

The role of a proper coating system in preventing interior wall hairline cracks

To repair hairline cracks and achieve a durable interior wall finish, Nippon Paint Bare-to-Finish Solutions provide the right products and steps to restore a smooth, seamless surface. Proper surface preparation, filling, sealing, and finishing help ensure strong adhesion and reduce the risk of cracks reappearing or paint failure. 

Your Guide To System Solutions for Holes in Walls

Let Nippon Paint House Pakar tell you all about fixing holes in walls from bare to finish.

What Causes Hairline Cracks on Walls?

Interior hairline cracks can make a space appear aged or poorly maintained. Dust and moisture may seep into these cracks over time, weakening the paint layer and leading to peeling or further cracking. Nippon Paint’s Bare-to-Finish Solutions for Hairline Cracks helps protect interior walls and reduce the need for repeated repairs.

Poor Construction Practices

Insufficient surface preparation, low-grade materials, or the absence of proper protective coatings can compromise the structural integrity and long-term performance of wall and floor surfaces.

Structural Movement

As temperatures change and buildings carry daily structural loads, walls and floors naturally shift. This subtle movement can lead to stress cracks that slowly grow into visible holes if left unaddressed.

Incompatible Paint Types

Ensure the sealers, primers, and paints used are designed to work together, as mixing incompatible paint types may lead to peeling and other coating issues.

Following the correct repair steps with compatible products from Nippon Paint’s Bare-to-Finish Solutions ensures cracks are treated from the base layer to the finishing coat. This not only conceals hairline cracks effectively, but also reinforces the surface, improves durability, and helps prevent cracks from returning.

Explore our recommended system solutions or speak to a Nippon Paint expert to find the right solution for your home.