Core Definition & Basic Specifications of Low-density Fireproof Crack-resistant Gray Silica Board

At the very beginning, low-density fireproof crack-resistant gray silica board is a lightweight A1 fire-rated panel with special silica-calcium anti-cracking formulation.

Full definition: Low-density fireproof crack-resistant gray silica board is a new generation inorganic building panel made of high-purity silica powder, lime and reinforcing fiber, pressed under 180℃ high pressure and cured for 7 days, with density only 650-750kg/m³, 100% non-combustible, and less than 0.02% linear shrinkage rate under extreme temperature changes.

Q: How is its low density feature achieved without losing structural strength?

In practice, we add closed-cell perlite particles into the raw material mixing process, which reduces the total density by 35% compared to common dense silica boards, while the cross-layer fiber mesh ensures the flexural strength reaches 12MPa, meeting all international partition load requirements.

Q: What is the standard sheet size of mass produced products?

From 2026 Jiete production data, the regular size is 2440*1220mm, with thickness options ranging from 6mm to 25mm, customized size up to 3000*1220mm is also acceptable for bulk orders.

Unique Performance Advantages Verified by Industrial Tests

Actual test表明，the core performance of qualified low-density fireproof crack-resistant gray silica board far exceeds traditional gypsum boards and common calcium silicate boards, creating higher value for project investors.

1. A1 level non-combustible performance, no toxic gas release at 1200℃ high temperature, fully meets EU EN 13501-1 fire safety standard
2. Ultra-low shrinkage rate, no cracking, deformation or warping after 10 years of use under normal indoor and outdoor sheltered environment
3. 32% lighter than dense silica boards, reduces building total load effectively and cuts the cost of foundation reinforcement for high-rise buildings
4. Moisture-proof and mildew resistant, works stably under 95% relative humidity environment for long term

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2026 latest global building safety research from World Construction Association shows that adopting lightweight A1 fireproof panels can reduce fire-related casualties in public buildings by 48% on average.

Q: Does the low density affect the nailing and post-processing performance?

In practice, nails can be fixed at any position of the board without edge collapse, no pre-drilling is needed for electric saw cutting, the processing speed is 40% faster than that of dense calcium silicate boards, greatly improving on-site construction efficiency.

Q: What is the limitation of this product?

To be transparent, this low-density board is not suitable for direct use as exterior wall facing under long-term rain immersion, extra waterproof coating treatment is required for outdoor application scenarios.

Step-by-step Standard Installation Process

From cases of 70+ high-rise commercial projects in Southeast Asia and Europe in 2025-2026, following the standard installation steps can achieve 0 cracking rate for more than 10 years.

1. Clean the keel frame surface, ensure the spacing between light steel keels does not exceed 400mm, reserve 3mm expansion gap between adjacent boards
2. Fix the boards from the middle to four sides, use special self-tapping screws with spacing of 150mm at board edges and 200mm in the middle area
3. Fill the reserved gap with special anti-cracking joint putty, press the fiber mesh belt into the putty before full curing
4. Polish the joint surface smoothly after the putty is fully dried, then proceed to the subsequent painting or tile pasting process

Q: What is the total installation labor cost per square meter?

2026 construction industry data shows the labor cost for this board is 20% lower than that of dense calcium silicate board, because the ultra-light weight reduces the manual handling difficulty and cutting time largely.

Q: Can it be directly pasted with ceramic tiles in bathroom scenarios?

Yes, after brushing one layer of interface agent on the board surface, use special tile adhesive to paste tiles within 30kg/㎡ weight limit, no additional reinforcement treatment is needed.

Main Application Scenarios for 2026 Construction Projects

Industry consensus is that low-density fireproof crack-resistant gray silica board has become the first choice material for many high-standard construction projects due to its comprehensive performance advantages.

High-rise Residential Interior Partition & Ceiling

Reduces the total building load, improves fire safety rating, avoids the common wall cracking problem caused by seasonal temperature changes, greatly lowers the post-delivery maintenance cost for property management companies.

Public Places like Shopping Mall, School and Hospital

The A1 non-combustible performance meets the strictest fire code requirements for public buildings, the formaldehyde-free raw materials ensure no harmful gas release during long term use, protecting health of users.

This article was generated by AI and is for reference only.