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Foshan Huiju Decoration Material Co. Ltd.

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China 1Hour vs 2 Hour Fire Rated Drywall Assemblies What Specifiers Need to Know
China 1Hour vs 2 Hour Fire Rated Drywall Assemblies What Specifiers Need to Know

  1. China 1Hour vs 2 Hour Fire Rated Drywall Assemblies What Specifiers Need to Know
  2. China 1Hour vs 2 Hour Fire Rated Drywall Assemblies What Specifiers Need to Know
  3. China 1Hour vs 2 Hour Fire Rated Drywall Assemblies What Specifiers Need to Know
  4. China 1Hour vs 2 Hour Fire Rated Drywall Assemblies What Specifiers Need to Know

1Hour vs 2 Hour Fire Rated Drywall Assemblies What Specifiers Need to Know

  1. MOQ: 500 pcs
  2. Price:
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After-sale Service Online technical support, Onsite Inspection, Free spare parts
Color red
Thickness 12.5mm
Edge Square or Tapered
Packaging Details Our timber packed in pallet or in bulk/Loose packing(pallet is covered with package board and PVC tapes)
Design Style Modern
Regular Size 1220mm*2440mm
Warranty 1 Year
Usage Internal Wall Partition
Supply Ability 3000000 Meter/Meters per Month
Application indoor, Hotel, Villa, Apartment, Office Building
Material Pure Natural Gypsum
Feature Fire Resistant Plasterboard
Place of Origin Guangdong
Brand Name SUNHOUSE

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  1. Product Details
  2. Company Details

Product Specification

After-sale Service Online technical support, Onsite Inspection, Free spare parts Color red
Thickness 12.5mm Edge Square or Tapered
Packaging Details Our timber packed in pallet or in bulk/Loose packing(pallet is covered with package board and PVC tapes) Design Style Modern
Regular Size 1220mm*2440mm Warranty 1 Year
Usage Internal Wall Partition Supply Ability 3000000 Meter/Meters per Month
Application indoor, Hotel, Villa, Apartment, Office Building Material Pure Natural Gypsum
Feature Fire Resistant Plasterboard Place of Origin Guangdong
Brand Name SUNHOUSE
High Light 1 hour fire rated drywall ,2 hour fire rated drywall assemblies ,fire resistant plasterboard for specifiers

1-Hour vs 2-Hour Fire Rated Drywall Assemblies: What Specifiers Need to Know

A fire rated drywall wall is only as good as the assembly it forms. The same board can deliver a one-hour or a two-hour rating depending on layers, thickness, framing, insulation and fastening. The rating is a property of the system — never of the panel alone.

How Each Rating Is Achieved

Assembly Typical Build-Up Approx. Rating
Single layer, one face 15.9 mm Type X 30–60 min
Single layer, both faces 15.9 mm Type X each side 1 hour
Double layer 2 x 15.9 mm Type X, staggered joints 2 hours
Double layer plus insulation 2 x 15.9 mm Type X with mineral wool 2 hours, with better acoustics
Shaftwall Proprietary panel and liner system 1–3 hours by design

The Variables That Change the Rating

  • Number of layers — the most powerful lever, and the most expensive.
  • Board grade — Type X and Type C behave differently at elevated temperature.
  • Stud type and spacing — steel gauge and centres affect load-carrying during a fire.
  • Cavity insulation — mineral wool improves fire and acoustic performance together.
  • Detailing — joint staggering, head-of-wall and perimeter seals are frequent failure points.

Cost Reality

Moving from a one-hour to a two-hour assembly roughly doubles board consumption over the same wall area, plus extra labour, longer screws and additional joint treatment. On a large project that is a real budget line. The rating should come from the fire strategy first, and the cheapest tested assembly that satisfies it should then be selected — not the other way round.

What Inspections Actually Catch

Having supported contractors through fire inspections on residential towers, hotels and warehouses, we see the same defects repeatedly: joints lining up across layers, insufficient fastener spacing at board edges, and unsealed perimeter gaps. None of these were board defects. All of them invalidated the tested design. The practical lesson is that installation discipline, not panel selection, decides whether the wall you built matches the wall that was tested.

Our assembly guidance references published listings and accredited laboratory test data, including ASTM E119 designs and EN 13501-1 classifications. Where a local code or a proprietary design is more specific, that document governs. Where a single-layer design already meets the requirement, we will say so — recommending unnecessary double-layering is not good service.

Frequently Asked Questions

Can different board types be mixed in one rated wall?

Only within a tested design. Mixing types without a matching test report invalidates the rating.

Does acoustic insulation improve the fire rating?

Mineral wool improves both, but only where the specific configuration has been tested.

Do screws really matter?

Yes. Gauge, length, type and spacing are all part of the tested design.

Is a 2-hour wall always double layer?

Not always — some proprietary shaftwall and single-layer systems achieve it. It depends on the tested listing.

Share your fire strategy wall types and we will match each one to a compliant, cost-efficient assembly.

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • Business Type:

    Manufacturer

  • Year Established:

    1993

  • Total Annual:

    20000000-60000000

  • Employee Number:

    50~100

  • Ecer Certification:

    Verified Supplier

About Foshan Huiju One-Stop Ceiling, Flooring and Partition System Supplier Founded in 1993, Foshan Huiju Decoration Material Co. Ltd. has developed into an established supplier of decorative building materials, providing coordinated ceiling, flooring, partition and furniture board solutions for... About Foshan Huiju One-Stop Ceiling, Flooring and Partition System Supplier Founded in 1993, Foshan Huiju Decoration Material Co. Ltd. has developed into an established supplier of decorative building materials, providing coordinated ceiling, flooring, partition and furniture board solutions for...

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  • Foshan Huiju Decoration Material Co. Ltd.
  • Weiye International Building, Yixian Road, Dali Town, Nanhai District, Foshan City
  • https://www.gypsumplasterboards.com/

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