Magnesium Oxide Boards Compared to Gypsum and Fiber Cement Boards

Chloride Free MgO Boards

Magnesium Oxide Boards Compared to Gypsum and Fiber Cement Boards

Table of Contents

Choosing the right material is important for a successful project. Magnesium oxide board, or magpanel, works well because it is strong. It resists fire, water, and lasts a long time. For example, magpanel can resist fire for 1-2 hours and does not swell when wet. Gypsum boards are cheaper but do not handle water well. They also need extra treatments to resist fire. Fiber cement boards are strong but soak up water over time. Knowing these differences helps you stay safe, save money, and get better results.

Key Takeaways

  • Magnesium oxide boards are great for fire safety. They can handle high heat and don’t burn, making them perfect for fireproof walls.

  • These boards work well in wet or humid places. They don’t soak up much water, so mold doesn’t grow on them.

  • Magnesium oxide boards last a long time. They stay strong even in tough conditions, unlike gypsum boards.

  • Gypsum boards are cheap and good for dry indoor areas. They shouldn’t be used in places with lots of moisture.

  • Fiber cement boards are tough and can handle bad weather. They’re great for outdoor projects but need special tools to install.

Fire Resistance

Fire resistance of magnesium oxide boards (MgO boards)

Magnesium oxide boards, or MgO boards, are great at stopping fires. They don’t burn and stay strong even in high heat. A 10 mm-thick MgO board can block fire for 30 minutes. It also works well in wet or changing weather. This makes MgO boards a good pick for fire-safe walls in homes and buildings.

Fire resistance of gypsum boards

Gypsum boards can handle fire but need extra help to do better. Tests like ASTM E119 and ISO 834–1 check how they perform. Adding cement-based boards to gypsum boards can make them last 45 minutes longer in fires. But by themselves, gypsum boards don’t work well in big fires.

Evidence Type

Description

Standardized Tests

ASTM E119 and ISO 834–1 measure gypsum board fire resistance.

Experimental Findings

NFRL tested gypsum-steel walls under fire.

Fire Exposure Scenarios

Walls were tested with small and big fires to see how they hold up.

Fire resistance of fiber cement boards

Fiber cement boards are strong but don’t do well in big fires. At 230 °C for three hours, they lose 70–80% of their strength. At 400 °C for 15 minutes, only one out of five samples stayed strong enough to test. This shows fiber cement boards are not the best for very fire-safe uses.

  • Fiber cement boards weaken a lot in high heat.

  • They often fail in tough fire tests for building exteriors.

Comparison of fire resistance across the three materials

When looking at fire resistance, these materials perform differently. Each one reacts in its own way when exposed to fire. This affects where they can be used.

Magnesium oxide boards are very good at resisting fire. They handle high heat and are often used for fire-safe projects. But in long fire tests, they shrink and bend after 30 minutes. This means their strength drops over time. In heat tests, MgO boards lost half their weight, which is more than fiber cement boards.

Fiber cement boards resist fire but aren’t as strong as MgO boards in extreme heat. They lose less weight—about 24%—in heat tests. This shows they keep their shape better. However, they don’t get the same high fire ratings as MgO boards. Fiber cement boards work well for places needing medium fire safety.

Gypsum boards need extra layers to resist fire better. Without these layers, they fail in big fires. Adding cement-based layers can help them last 45 minutes longer. But this makes putting them up harder. Gypsum boards are best for inside spaces with less fire risk.

Tip: For top fire safety, pick magnesium oxide boards. Use fiber cement boards for medium fire safety. Choose gypsum boards for areas with low fire danger.

Moisture Resistance

Moisture resistance of magnesium oxide boards (Magpanel MgO board)

Magnesium oxide boards, like Magpanel, are great at handling moisture. They soak up very little water and stay strong even when wet. Tests show MgO boards only move 0.05–0.07% in moisture after 22 weeks. This is much better than many other materials. In water tests, they let in only tiny amounts of moisture. This proves they block water very well.

MgO boards also resist water vapor, as shown in the ‘wet cup’ test:

  • 9 mm MgSO4: 2.4 ± 0.2

  • 12 mm MgSO4: 4.4 ± 0.3

  • 12 mm MgCl2: 2.9 ± 0.4

These features make MgO boards a smart pick for damp areas. They don’t hold water, so mold and mildew can’t grow on them.

Moisture resistance of gypsum boards

Gypsum boards don’t handle moisture as well as MgO boards. They soak up water, which can make them swell, bend, or grow mold. Some gypsum boards have water-resistant coatings, but these only help a little. Over time, high humidity or water can weaken them.

Tests like ASTM E1105-15 show gypsum boards often fail to block water as well as MgO boards. How well they work depends on how they’re installed and the environment they’re in.

Moisture resistance of fiber cement boards

Fiber cement boards are better than gypsum boards at resisting water but not as good as MgO boards. They can block some water, but long-term moisture can make them absorb water. This weakens them over time. If not installed right, they might crack or let water through.

The ASTM E1105-15 test shows fiber cement boards resist water in controlled tests. But in real life, their performance depends on the weather and how they’re put up. They last longer than gypsum boards but aren’t as dependable as MgO boards in wet places.

Tip: For wet or humid areas, magnesium oxide boards are the best choice because they resist moisture so well.

Comparison of moisture resistance across the three materials

Magnesium oxide boards are the best at resisting water. They absorb very little moisture, even in wet or humid places. This makes them perfect for damp areas. They stay strong over time and stop mold from growing, which keeps them durable.

Gypsum boards do not handle water well. They soak up moisture quickly, causing them to swell and weaken. Even improved gypsum materials don’t perform much better. For example:

  • Gypsum-based humidity-control material absorbs 0.225 g/g at 97.4% humidity.

  • This is 1.4 times better than gypsum-silica gel but 4.5 times better than plain gypsum.

Fiber cement boards are okay at resisting water. They take in less water than gypsum but more than MgO boards. High humidity can still weaken them over time. How they are made also changes how well they work. For example, coated boards like Moistop resist water best, with a WVTR under 1 g/m² per day. Recycled boards, however, have a WVTR of 368 g/m² per day, meaning they let in more moisture.

Board Type

WVTR (g/m² day)

Moisture Sorption Properties

Kraft Sample

1892

Lets in the most moisture

Recycled Board

368

Similar to solid board

Solid Board

201

Absorbs less moisture

Moistop Coated

< 1

Best at blocking moisture

Paraloid Coated

Higher than Moistop

Moderate water resistance

If you need a material that blocks water well, choose magnesium oxide boards. They stay strong and dry in humid areas. Fiber cement boards are good for medium moisture, while gypsum boards are best for dry spaces.

Durability and Longevity

mgo board strength

Durability of magnesium oxide boards (Magpanel)

Magnesium oxide boards, like magpanel, are very strong and useful. They stay tough even in hard conditions. These boards can hold heavy loads without breaking. Magpanel doesn’t crack or bend easily, making it great for many projects. You can use it inside or outside buildings.

Magpanel also handles moisture and temperature changes well. It stops mold and mildew from growing, so it lasts a long time. If you need something strong and long-lasting, magnesium oxide boards are a smart pick.

Durability of gypsum boards

Gypsum boards are somewhat durable but not very strong. They work well for walls and ceilings in dry places. However, they don’t do well in wet areas or under heavy weight. Over time, gypsum boards can weaken or break if exposed to water.

Adding coatings or mixing them with other materials can make them stronger. Still, gypsum boards are less durable than magpanel or fiber cement boards. They are best for light-duty uses where strength isn’t a big need.

Durability of fiber cement boards

Fiber cement boards are tough and last a long time. They don’t crack, bend, or get damaged by weather easily. This makes them perfect for outdoor projects like siding or roofing. They are strong enough to hold heavy loads.

However, fiber cement boards can soak up water if not sealed well. This can make them weaker in wet conditions. To keep them strong, seal and install them properly. Fiber cement boards are a solid choice for projects needing durable materials.

Longevity comparison of the three materials

Picking materials that last is important for any project. How long magnesium oxide boards, gypsum boards, and fiber cement boards last depends on how they handle wear and weather.

Magnesium oxide boards are very strong and hold up in tough conditions. They resist rust, water, and temperature changes, making them great for wet or coastal areas. Experts like chloride-free MgO boards because they stay strong in salty air. Tests show MgO boards keep their quality better than others in heat and humidity. This makes them a smart choice for long-term use.

Gypsum boards don’t last as long. They work well indoors in dry places but fail in wet or humid areas. Over time, they can swell, crack, or lose strength. Tests show gypsum boards don’t hold up well when conditions change. They are cheap but may need replacing often in tough environments.

Fiber cement boards last longer than gypsum boards but not as long as MgO boards. They resist cracking and bending, so they’re good for outdoor use. However, over time, they can soak up water if not sealed right. This weakens them and shortens their life in wet areas.

Here’s a simple comparison of how they perform:

Criteria

MgO Board

Gypsum Board

Fiber Cement Board

Resistance to Moisture

Excellent

Poor

Moderate

Durability in Harsh Weather

High

Low

Moderate

Lifespan in Humid Areas

Long-lasting

Short

Moderate

Tip: For long-lasting projects, pick magnesium oxide boards. Use fiber cement boards for medium durability. Choose gypsum boards for short-term or low-stress needs.

Environmental Impact

Environmental benefits of magnesium oxide boards (MgO boards)

Magnesium oxide boards are a green choice for building projects. They use less energy to make than other materials, which helps the environment. These boards don’t burn, making them safer in fires and creating less waste after a fire.

Certifications prove their eco-friendly features. For instance, ZS2 Technologies works with QAI Laboratories to ensure these boards meet high standards. QAI Laboratories is approved by trusted global organizations, so their certifications are reliable. This makes magnesium oxide boards, like magpanel, a smart and eco-friendly pick for construction.

Environmental considerations for gypsum boards

Gypsum boards are common but have environmental downsides. Making them requires mining gypsum, which uses up natural resources. The process also takes a lot of energy, adding to air pollution and greenhouse gases.

Throwing them away can cause problems too. Gypsum boards in landfills can release harmful gases like hydrogen sulfide when wet. Some companies now make recycled gypsum boards, but they still harm the environment more than magnesium oxide boards.

Environmental impact of fiber cement boards

Fiber cement boards last a long time but have mixed environmental effects. Making them uses cement, which takes a lot of energy and adds to carbon emissions. However, their durability means fewer replacements, which can balance out some of the environmental costs.

Disposing of fiber cement boards must be done carefully. If not, they can release harmful particles into nature. Even with these issues, their strength in bad weather makes them a good choice for outdoor use when installed properly.

Tip: For the most eco-friendly option, choose magnesium oxide boards. Fiber cement boards are better for long-lasting projects, while gypsum boards are the least sustainable choice.

Sustainability comparison of the three materials

Picking eco-friendly building materials helps protect the environment. Magnesium oxide boards, gypsum boards, and fiber cement boards differ in how green they are.

Magnesium oxide boards are the most eco-friendly choice. Making them uses less energy and creates fewer greenhouse gases than cement. They are made from natural materials, which saves resources. These boards last a long time, so they don’t need replacing often. This reduces waste. MgO boards can also be recycled, keeping them out of landfills. They don’t release harmful chemicals, making them safe for indoor spaces. If you care about the planet, MgO boards are the best option.

Gypsum boards are common but not very green. Mining gypsum uses up natural resources, and making the boards takes a lot of energy. This adds to air pollution. When thrown away, gypsum boards can release harmful gases like hydrogen sulfide if they get wet. Some recycled gypsum boards exist, but they still aren’t as eco-friendly as MgO boards. Gypsum boards are better for projects where cost matters more than the environment.

Fiber cement boards are somewhat eco-friendly. They last a long time, so they don’t need replacing often. This saves resources. However, making them uses cement, which takes a lot of energy and creates carbon emissions. They must be disposed of carefully to avoid harming nature. Fiber cement boards are a good pick for outdoor projects where strength is more important than being green.

Material

Sustainability Features

Environmental Impact

Magnesium Oxide Boards

Low energy use, recyclable, non-toxic

Minimal greenhouse gas emissions

Gypsum Boards

Recyclable options available

High energy use, harmful landfill gases

Fiber Cement Boards

Durable, fewer replacements

High carbon emissions during production

Tip: For the most eco-friendly option, choose magnesium oxide boards. Fiber cement boards are good for strong outdoor projects, while gypsum boards are the least green choice.

Ease of Installation

mgo cement board installation

Installation process for magnesium oxide boards (Magpanel MgO board)

Putting up magnesium oxide boards is easy and quick. You can cut them with regular tools like a utility knife or saw. These boards are light, so one person can move and place them easily. Screws or nails work fine to attach them; no special tools are needed.

For strong support, you can install magnesium oxide boards on wood or metal frames. Make sure the edges fit together tightly to avoid gaps. Use glue or tape to seal the joints for a smooth finish. This makes the boards last longer and look neat.

Installation process for gypsum boards

Installing gypsum boards is simple but needs care. These boards can break if dropped or handled roughly. To cut them, score the surface with a knife and snap along the line. Use screws or nails spaced about 12 inches apart to hold the boards firmly.

Gypsum boards work best in dry places. Avoid using them where there’s a lot of moisture. After putting them up, cover the seams with joint compound and sand them smooth. This makes the surface ready for paint or other finishes.

Installation process for fiber cement boards

Installing fiber cement boards takes more effort because they are heavy. You might need help to lift and place them. Cutting these boards requires special tools like a carbide-tipped saw blade. Use rust-proof screws or nails to attach them securely.

For outdoor use, seal the edges with caulk to keep water out. This helps the boards stay strong and weatherproof. Always wear safety gear when cutting or handling fiber cement boards to avoid breathing in dust.

Tip: Choose magnesium oxide boards for the easiest installation. They are light and simple to use. Fiber cement boards need more work but are very durable. Gypsum boards are easy to install but must be handled carefully to prevent damage.

Comparison of installation ease across the three materials

Installing magnesium oxide boards, gypsum boards, and fiber cement boards is different. Knowing these differences helps you pick the right one.

1. Magnesium Oxide Boards (MgO Boards)

Magnesium oxide boards are the easiest to install. They are light, so one person can carry them. You can cut them with simple tools like a knife or saw. No special tools are needed. Attaching them to wood or metal frames is easy with screws or nails.

Tip: For quick and easy installation, choose MgO boards.

2. Gypsum Boards

Gypsum boards are also easy to install but need careful handling. They can break if dropped. Cutting them is simple—just score and snap them. Use screws or nails to secure them evenly. While light, their fragility can slow you down.

3. Fiber Cement Boards

Fiber cement boards are the hardest to install. They are heavy, so two people may be needed to lift them. Cutting requires special tools like a carbide-tipped saw blade. You also need to seal the edges with caulk to keep water out. This makes the process slower.

Material

Ease of Handling

Cutting Tools Needed

Installation Speed

Magnesium Oxide Boards

Light, easy to move

Basic tools (knife, saw)

Fast

Gypsum Boards

Light, fragile

Utility knife

Moderate

Fiber Cement Boards

Heavy, hard to move

Special tools (saw blade)

Slow

Note: For DIY projects, magnesium oxide boards are the simplest. Fiber cement boards take more time and skill.

By comparing these, magnesium oxide boards are the easiest to install. Gypsum boards are manageable but need care. Fiber cement boards are durable but harder to work with. Pick based on your project’s needs and your skills.

Applications

Best uses for magnesium oxide boards (Magpanel)

Magnesium oxide boards, like magpanel, are great for many uses. They resist fire, making them perfect for fire-safe walls in tall buildings. You can use them inside or outside, especially in wet or harsh weather areas. These boards are light, so they’re easy to carry and install, saving time and money.

For strong projects, magnesium oxide boards are a smart pick. They work well for walls and ceilings that need to hold weight. They last a long time and stay strong. Since they are eco-friendly, they’re great for green building projects. They also stop mold and mildew, so they’re good for basements, bathrooms, and places near the ocean.

Feature

MGO Board

Other Materials

Fire Resistance

Excellent fire protection

Often less effective

Weight

Light and easy to handle

Heavier, harder to install

Installation Ease

Quick and simple setup

Needs more tools and effort

Sustainability

Green and recyclable

Higher environmental impact

Cost

Similar to drywall, low upkeep

Often higher long-term costs

Tip: Choose magnesium oxide boards for fire safety, moisture control, or eco-friendly projects.

Best uses for gypsum boards

Gypsum boards are a budget-friendly choice for indoor projects. Use them for walls, ceilings, and room dividers in homes or offices. They are popular in metal buildings for inside walls and ceilings. Gypsum boards are light and easy to fix, making them great for spaces that need frequent changes.

People like gypsum boards because they’re cheap and flexible. You can install them with basic tools and screws. But they work best in dry areas since they don’t handle water well. Avoid using them in places with high humidity or moisture.

Use Area

Key Details

Homes

Great for walls, ceilings, and partitions in houses.

Metal Buildings

Common for inside walls, cladding, and ceilings in metal structures.

Affordable and Easy to Use

Low-cost and simple to install, making them widely used.

Note: Gypsum boards are best for indoor spaces where cost and easy installation matter most.

Best uses for fiber cement boards

Fiber cement boards are perfect for outdoor projects because they are tough and weatherproof. Use them for siding, roofs, and outside walls in homes or offices. They are strong enough for heavy-duty uses, especially in places with bad weather.

You can also use them indoors in wet areas like kitchens or bathrooms if sealed properly. They hold up well under heavy loads and don’t crack easily. However, they are heavy and need special tools to cut, so plan ahead for installation.

Tip: Fiber cement boards are best for outdoor projects or areas needing strong, weather-resistant materials.

How to pick the best material for your project

Choosing the right material depends on what your project needs. Magnesium oxide boards, gypsum boards, and fiber cement boards each have pros and cons. To decide, think about fire safety, water exposure, strength, eco-friendliness, and how easy they are to install.

1. Check Fire Safety

For high fire protection, magnesium oxide boards are the top choice. They handle extreme heat and keep you safe. Fiber cement boards are okay for medium fire risks. Gypsum boards work in low-risk areas but need extra layers to improve fire resistance.

Tip: Use magnesium oxide boards for fire-safe walls in homes or offices.

2. Think About Water Exposure

In wet or humid places, magnesium oxide boards are the best. They block water and stop mold, making them great for bathrooms or basements. Fiber cement boards can handle some moisture but may weaken over time. Gypsum boards don’t do well with water and lose strength when wet.

3. Look at Durability

If your project needs strong materials, magnesium oxide boards last the longest. They resist damage from water, heat, and heavy loads. Fiber cement boards are tough and good for outdoor use. Gypsum boards are less strong and better for light indoor projects.

4. Consider the Environment

For eco-friendly projects, magnesium oxide boards are the greenest option. They use less energy to make and can be recycled. Fiber cement boards last a long time but create carbon emissions during production. Gypsum boards have the biggest environmental impact because of mining and energy use.

5. Ease of Installation

If you want something easy to install, magnesium oxide boards are lightweight and simple to work with. Gypsum boards are also easy but need careful handling to avoid breaking. Fiber cement boards are heavy and require special tools, making them harder to install.

6. Match Material to Use

Magnesium oxide boards are flexible and work indoors or outdoors. Use them for fire-safe walls, ceilings, or damp areas. Gypsum boards are best for dry indoor spaces like homes or offices. Fiber cement boards are perfect for outdoor projects like siding or roofs.

Criteria

Best Material

Why?

Fire Safety

Magnesium Oxide Boards

Handles high heat

Moisture Resistance

Magnesium Oxide Boards

Blocks water, stops mold

Durability

Magnesium Oxide Boards

Long-lasting, strong

Environmental Impact

Magnesium Oxide Boards

Green and recyclable

Installation Ease

Magnesium Oxide Boards

Lightweight, easy tools

Outdoor Applications

Fiber Cement Boards

Strong and weatherproof

Indoor Applications

Gypsum Boards

Cheap and simple to install

Note: Magnesium oxide boards are the most versatile. Fiber cement boards are great for outdoor projects, while gypsum boards are best for low-cost indoor use.

By understanding your project’s needs, you can pick the right material. Magnesium oxide boards are the best for tough jobs. Fiber cement boards are durable for outdoor use. Gypsum boards are affordable for dry indoor spaces.

Magnesium oxide boards, like magpanel, are great for stopping fires, blocking water, and being eco-friendly. These qualities make them perfect for tough projects. Gypsum boards are cheaper and work well indoors in dry areas. Fiber cement boards are strong and handle bad weather, so they’re good for outdoor use. Pick the right material based on your project’s needs, like fire safety, water exposure, or being green. Knowing these materials helps you choose wisely for lasting results.

FAQ

Why are magnesium oxide boards better than gypsum boards?

Magnesium oxide boards are stronger and resist fire, water, and mold. They last longer and work well in wet places. Gypsum boards cost less but don’t last as long. They are best for dry indoor areas.

Can fiber cement boards be used inside?

Yes, fiber cement boards can be used indoors. They are good for wet places like kitchens or bathrooms. But they are heavy and harder to install than magnesium oxide or gypsum boards.

Are magnesium oxide boards good for the environment?

Yes, magnesium oxide boards are very eco-friendly. Making them uses less energy and creates fewer harmful gases. They can also be recycled, making them great for green building projects.

Which board is easiest to put up?

Magnesium oxide boards are the easiest to install. They are light and can be cut with simple tools. Fiber cement boards need special tools and take more effort. Gypsum boards are light but can break easily.

How do I pick the best board for my project?

Think about what your project needs. For fire safety or wet places, use magnesium oxide boards. For outdoor strength, pick fiber cement boards. For cheap indoor projects, gypsum boards are a good choice.