When choosing fiberglass mesh, many people confuse alkali-resistant fiberglass mesh with regular fiberglass mesh. Although both are made of glass fiber, there are significant differences in material, performance, and application scenarios. In 2026, with the improvement of building material standards, understanding the key differences between the two is crucial for selecting the right material and ensuring project quality. This article will detail the 5 core differences to help you avoid mistakes in selection.
1. Raw Material Difference: Regular fiberglass mesh is usually made of medium-alkali glass fiber yarn, whose main component is silicate with general chemical stability. Alkali-resistant fiberglass mesh is made of alkali-free glass fiber yarn, which has better chemical stability and can resist the corrosion of alkaline substances such as cement for a long time.
2. Coating Treatment Difference: Regular fiberglass mesh is only coated with a common polymer emulsion, which has limited alkali resistance and is easy to degrade when in contact with cement mortar. Alkali-resistant fiberglass mesh is coated with a special alkali-resistant polymer emulsion and undergoes high-temperature heat setting treatment, which can effectively isolate alkaline substances and extend its service life in alkaline environments.
3. Performance Difference: Regular fiberglass mesh has general tensile strength and poor alkali resistance. It will become brittle and break after being used in alkaline environments for a long time. Alkali-resistant fiberglass mesh has high tensile strength in both warp and weft directions, good flexibility, and excellent alkali resistance. Its alkali-resistant strength retention rate can reach more than 75%, ensuring long-term stable performance in alkaline environments.
4. Application Scenario Difference: Regular fiberglass mesh is suitable for non-alkaline environments, such as indoor decoration, plastic reinforcement, and砂轮 base cloth, and is not suitable for building wall insulation and cement product reinforcement. Alkali-resistant fiberglass mesh is mainly used in alkaline environments such as building internal and external wall insulation, cement product reinforcement, and stone backing, which is the core material in construction projects.
5. Service Life Difference: Due to the lack of effective alkali-resistant treatment, the service life of regular fiberglass mesh is usually 2-3 years, and it is easy to age and damage. Alkali-resistant fiberglass mesh can maintain stable performance in alkaline environments for 10-15 years, which is more durable and can reduce the cost of later maintenance and replacement.
Tips for Selection: If it is used in construction projects such as wall insulation and cement reinforcement, choose alkali-resistant fiberglass mesh; if it is used in non-alkaline scenarios such as indoor decoration and small-scale repairs, regular fiberglass mesh can be selected to save costs. Choosing the right type according to the actual scenario is the key to ensuring the effect.