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According to the "JG/T 298-2010" standard for interior building materials, there are two main types of putty: water-resistant (N-type) and general-purpose (Y-type). The key difference between these two lies in their structural strength and durability.
Water-resistant putty must achieve a bond strength of at least 0.50 MPa under standard conditions, while the general type only needs to reach 0.30 MPa. Additionally, after being scraped and immersed in water for 48 hours, water-resistant putty should not show any signs of peeling, cracking, or blistering. It should still maintain a bond strength of 0.30 MPa or higher. In contrast, general-type putty tends to lose adhesion entirely after water exposure, resulting in zero bonding strength.
This water immersion test is considered a highly destructive evaluation in the standard. While it's unlikely that homeowners would intentionally submerge their walls in water, the test highlights an important real-world concern: product longevity. Even though walls aren't typically submerged, they are constantly exposed to moisture from the air. Over time, this can lead to degradation, especially if the material lacks good water resistance.
High-quality water-resistant putty, when applied correctly, can last more than 15 years. On the other hand, general-type putty may only last around 5 years, even with the protection of latex paint on the surface. Choosing the right type of putty is essential for ensuring long-term performance and reducing the need for frequent repairs.Siding Nails,Grip Rite Siding Nails,Siding Nails Lowes,Coil Siding Nails
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