
24 Mar What Are the Properties and Benefits of Magnesium Wall Board
You can pick magnesium wall board for building if you want something strong and safe. Magnesium wallboard is made from natural minerals and does not give off bad chemicals. It is special because it does not burn easily, gets ruined by water, or break when hit or attacked by bugs. Builders everywhere like magnesium wallboard because it weighs less than cement boards and is simple to put up. More people want safer and tougher walls, so the market for magnesium wall board is getting bigger quickly.
Key Takeaways
Magnesium wallboard is very good at stopping fire. It helps keep your home safe from flames and bad smoke.
This wallboard does not let water in easily. It works well in wet places like bathrooms and kitchens. You do not have to worry about mold.
Magnesium wallboard is strong and lasts a long time. It can last more than 50 years. This means you will not need many repairs. You can save money.
Magnesium wallboard helps keep the air inside clean. It does not let out bad chemicals. This makes it safer for your family.
You can use magnesium wallboard in many ways. It can have different looks and finishes. It works well in homes and businesses.
Key Properties of Magnesium Wall Board
Fire and Heat Resistance
Magnesium wallboard helps protect your house from fire. It does not burn or get weak when it gets hot. If flames touch magnesium wallboard, it only lets out water vapor. It does not make smoke or bad gases. This keeps the air clean and safe for your family. Magnesium oxide boards have the best fire rating, called A1 Non-Combustible, under EN 13501-1. You can see how magnesium wallboard and gypsum board are different in the table below:
Criteria | Magnesium Sulfate Board (MgO) | Gypsum Board |
|---|---|---|
Fire Resistance Rating | A1 Non-Combustible | Fire-Resistant (up to 1 hour) |
Fire Endurance Duration | Up to 4 hours or more | 30 to 60 minutes |
Thermal Combustibility | Non-combustible, withstands up to 1200°C | Combustible, weakens under heat |
Flame Spread Index | Very low (0 to 25) | Moderate |
Smoke and Toxic Gas Emissions | Low smoke, no toxic gases | Moderate smoke, non-toxic gases |
Magnesium wallboard helps you follow strict fire safety rules. You can feel safe knowing your walls will not help a fire spread.
Moisture, Mold, and Rot Protection
Magnesium wallboard does not get ruined by water or damp air. You can use magnesium oxide boards in bathrooms and kitchens. They work well in places that get wet. Mgo wallboard takes in less than 10% water. It does not swell or crack even after days in water. The table below shows how magnesium oxide boards and cement boards are different:
Feature | Magnesium Oxide Boards | Traditional Cement Boards |
|---|---|---|
Moisture Absorption | Less than 10% | Takes in water over time |
Water Resistance | No swelling or cracks | N/A |
Application Areas | Bathrooms, kitchens | N/A |
Magnesium boards stop mold and rot. You do not need to worry about them bending or breaking from wet and dry changes. Mgo wallboard keeps its shape and stays strong after getting wet many times. The next table shows how magnesium wall boards compare to plywood and cement board:
Material | Flexural Strength Retention | Water Absorption | Shape Maintenance |
|---|---|---|---|
Magnesium Wall Boards (MgO) | Minimal | Maintains shape | |
Plywood | ~60% after 25 cycles | High | Warps and swells |
Cement Board | Not specified | Moderate | Maintains shape |
Magnesium wallboard is good for stopping mold and staying strong in wet places.
Durability and Impact Resistance
Magnesium wallboard is strong for a long time. You can use magnesium oxide boards in busy places like schools and offices. Mgo wallboard does not break easily. Tests show magnesium boards keep their strength after freezing and thawing. They last more than 50 years in normal use. This means you fix them less and save money.
Magnesium wallboard works well in tough places.
Mgo wallboard does not break and keeps its shape.
Magnesium oxide boards last longer than many other materials.
Sound Insulation
Magnesium wallboard makes rooms quieter. Magnesium oxide boards are thick and block sound better than gypsum drywall. The sound rating for homes is 53 to 54. For businesses, it can be up to 59 or 60 with special panels.
Application Type | STC Rating |
|---|---|
Residential | 53 to 54 |
Commercial | Up to 59 |
DragonBoard MgO Panels | Up to 60 |
Magnesium boards help stop noise and make spaces peaceful. The table below shows how magnesium wall boards and gypsum drywall are different:
Property | Magnesium Wall Boards (MgO) | Gypsum Drywall |
|---|---|---|
Sound Insulation | Less effective | |
Durability | High resistance to moisture and mold | Vulnerable to moisture |
Fire Resistance | Naturally fireproof, no toxic fumes | Can be damaged by heat |
Eco-Friendliness | Made from sustainable materials | Requires mining |
Non-Toxic and Noncombustible
Magnesium wallboard is safe to breathe around. Magnesium oxide boards do not have formaldehyde or VOCs. Tests show almost no VOCs come out. Mgo wallboard makes indoor air better and lowers health risks. Magnesium boards do not burn and do not make bad gases in fires.
Certification | What It Tests | Fire Rating Type |
|---|---|---|
ASTM E136 | Noncombustibility | |
ASTM E84 | Fire spread | Class A, B, C |
Magnesium wallboard does not help fires grow.
Mgo wallboard stays strong in heat and does not make bad gases.
Magnesium oxide boards make little smoke and vapor in fire.
You get safer air and better protection for your family.
Receptive Bonding Surface
Magnesium wallboard lets you use many finishes. You can use thin-set mortars and latex adhesives for tile. Magnesium oxide boards work with water-based and oil-based paints, stucco, wallpaper, plaster, stone, tile, and brick. You should use a primer made for concrete or masonry because magnesium wallboard is alkaline.
Works with most paints, stucco, wallpaper, plaster, stone, tile, and brick.
Magnesium wallboard fits well with EIFS and SIPS systems.
You can finish mgo wallboard easily and make it look how you want.
Magnesium wallboard helps you build strong, safe, and nice spaces. You get good performance and easy finishing for any project.
Benefits of Magnesium Wall Board
Safety and Indoor Air Quality
You want your home or work to be safe. Magnesium wallboard helps keep the air clean. Magnesium oxide boards do not have formaldehyde, asbestos, or VOCs. These bad substances can cause breathing trouble and allergies. Most people spend lots of time inside, so clean air is important.
Magnesium wallboard stops mold because it resists moisture.
Magnesium oxide boards help people with allergies and asthma.
Mgo wallboard does not let out VOCs or toxic gases.
Magnesium boards keep air fresh and safe.
Evidence Description | Impact on VOCs |
|---|---|
Non-toxic materials | Do not let out bad substances |
Helps keep air cleaner | |
Does not release VOCs | Makes indoor air better |
You can feel calm knowing magnesium wallboard protects your family and coworkers from indoor air pollution.
Long-Term Performance
You want walls that last and need little care. Magnesium wallboard gives you strength and durability. Magnesium oxide boards do not crack, warp, or break easily. Mgo wallboard works well in busy places like schools, offices, and hospitals. Magnesium boards keep their shape after getting wet or dry.
Description | |
|---|---|
Regular Cleaning | Use a damp cloth or mild soap to keep surfaces clean. |
Periodic Inspections | Check for cracks, gaps, or water leaks, especially in humid areas |
Addressing Minor Issues | Use fillers or sealants quickly to stop bigger problems |
Occasional Touch-ups | For painted surfaces, touch-ups may be needed, but the board stays strong |
You save money because magnesium wallboard needs fewer repairs. Mgo wallboard stays strong for over 50 years. Magnesium oxide boards do not rot or get ruined by bugs. You spend less time and money fixing your walls.
Magnesium wallboard gives you lasting value and less worry about maintenance.
Energy Efficiency
You can lower your energy bills with magnesium wallboard. Magnesium oxide boards help keep rooms warm in winter and cool in summer. Mgo wallboard cuts down on heating and cooling needs. Magnesium boards have good insulation and thermal mass.
Magnesium wallboard helps keep indoor temperatures comfortable.
Magnesium oxide boards lower energy use for heating and cooling.
Mgo wallboard helps you save money on energy.
You make your building more eco-friendly and sustainable when you use magnesium wallboard.
Versatility in Applications
You can use magnesium wallboard in many places. Magnesium oxide boards work for walls, ceilings, floors, and outside sheathing. Mgo wallboard fits homes, offices, hotels, and hospitals. Magnesium boards offer fire resistance, moisture resistance, and easy installation.
Sector | Common Applications | Key Benefits |
|---|---|---|
Residential | Walls, ceilings, floor underlayment, outside sheathing | Fire resistance, moisture protection, easy installation, sustainability, energy efficiency |
Commercial | Offices, stores, hotels, healthcare buildings | Durability, low maintenance, mold and bacteria resistance, looks nice, supports design |
Magnesium wallboard works well in wet places and places that need strong fire resistance. Magnesium oxide boards resist bugs and mold. Mgo wallboard lets you use creative designs and finishes. Magnesium boards are light and easy to move.
Description | |
|---|---|
Fire Resistance | Up to 4-hour fire ratings, important for hospital safety. |
Water and Mold Resistance | Takes in little water, resists mold, makes air better. |
Pest Resistance | Resists termites and mold, lowers maintenance. |
Lightweight | Easier to carry and install. |
Soundproofing | Cuts down noise in hospital areas. |
Environmental Benefits | Made from safe, non-toxic materials. |
Higher Initial Cost | Costs more than gypsum or cement boards. |
Limited Availability | Not always found in all places. |
Mechanical Property Degradation | Some types lose strength in high humidity. |
You get the benefits of magnesium board in many places, but you should know the downsides of magnesium oxide boards, like higher cost and limited supply.
Magnesium wallboard gives you flexibility and good performance for all your building needs.
Magnesium Wall Board vs. Traditional Materials
Drywall Comparison
Drywall is used in many homes and offices. Magnesium wallboard is different because it protects better from fire and water. Magnesium boards do not let flames or smoke spread. They have top fire safety ratings like UL 055 and A+ from ASTM. Drywall burns faster and does not protect as well in a fire. Magnesium oxide boards do not swell or warp when wet. Drywall soaks up water and can fall apart.
You need skilled workers to put up magnesium wallboard, so it costs more and is harder to install.
Drywall goes up fast and easy, and you do not need special tools or skills.
Plywood and Cement Board Comparison
People use plywood or cement board for walls in wet or busy places. Magnesium wallboard is stronger and lasts longer. Magnesium boards do not get ruined by water and do not let mold grow. Plywood bends and gets weak when it gets wet. Cement boards can still get mold in damp air. Magnesium oxide boards are made from natural minerals, so they make less pollution when made. They do not have bad chemicals or VOCs, so the air inside stays healthy.
Feature | Magnesium Wall Boards | Cement Boards |
|---|---|---|
Moisture Resistance | Highly resistant to moisture, mold, and mildew | Moisture-resistant, but less durable |
Ideal Environments | Bathrooms, kitchens, laundry rooms | High-humidity areas |
Weight | Lighter and easier to handle | Heavier and more cumbersome |
Durability | Superior durability and mold resistance | Less durable compared to magnesium |
Installation | Simplified installation | More challenging installation |
Cost and Value
Magnesium wallboard costs more than drywall or cement board. It usually costs $1.50 to $2.50 for each square foot. Regular gypsum boards cost $0.50 to $1.00 for each square foot. The price depends on how it is made, how easy it is to get, how it affects the environment, and how simple it is to install.
Material | Average Cost per Square Foot |
|---|---|
MgO Boards | $1.50 – $2.50 |
Regular Gypsum Boards | $0.50 – $1.00 |
MgO wallboard lasts longer and does not need much fixing. Magnesium oxide boards last 20 to 30 years. Gypsum boards last 10 to 15 years. Magnesium boards are better for the earth and can be recycled. You save money over time because you do not have to fix or change your walls as much.
Feature | MgO Boards | Regular Gypsum Boards |
|---|---|---|
Average Cost per Square Foot | $1.50 – $2.50 | $0.50 – $1.00 |
Lifespan | 20-30 years | 10-15 years |
Environmental Impact | More eco-friendly, recyclable | Contains chemicals, less recyclable |
Magnesium wallboard gives you stronger walls, better fire safety, and cleaner air. You pay more at first, but you save money and get more value as time goes on.
Applications and Installation
Common Uses
You can use magnesium wallboard in many places. Builders choose it for homes, schools, hospitals, and offices. You see magnesium oxide boards in walls, ceilings, and floors. Many people use mgo wallboard for fire-safe construction and moisture protection. You can also use magnesium boards for exterior sheathing and as a base for tile in bathrooms. Its high strength and pest resistance make it a top choice for busy areas.
Installation Process
You will find the ease of installation a big advantage. You can cut magnesium wallboard with standard tools. Use screws or nails to attach it to wood or metal studs. Always wear a mask when cutting to avoid dust. For best results, leave a small gap between boards for expansion. You can finish the surface with paint, tile, or wallpaper. Magnesium oxide boards bond well with many finishes.
Tip: Use corrosion-resistant fasteners for longer durability.
Maintenance Tips
You can keep your wallboard looking new with simple care. Clean the surface with a damp cloth or mild soap. Inspect for cracks or water leaks every few months. If you see damage, repair it quickly to keep the wallboard strong. Magnesium boards resist mold and pests, so you spend less time on upkeep. This durability saves you money over time.
Task | How Often | What to Do |
|---|---|---|
Cleaning | Monthly | Wipe with damp cloth |
Inspection | Every 6 months | Check for cracks or leaks |
Repairs | As needed | Patch and seal |
Magnesium Wallboard in Wet Areas
You can trust mgo wallboard in wet places like bathrooms and kitchens. Magnesium oxide boards have excellent moisture resistance. They do not swell or rot after water exposure. This makes them ideal for showers, laundry rooms, and basements. Magnesium wallboard gives you moisture resistant and eco-friendly building materials. You help the planet by choosing sustainable options that last longer.
Note: Always seal joints and edges for the best moisture protection.
Environmental Impact
Sustainability
When you pick magnesium wallboard, you help the planet. This wallboard uses minerals from nature and does not hurt the earth when made. Making it uses less energy and recycles extra materials. Builders use eco-friendly ways to make magnesium wallboard. It meets green building rules like LEED. These rules give points for using safe and earth-friendly materials. The table below shows how magnesium wallboard helps meet these rules:
Contribution Aspect | LEED Credit/Prerequisite | Description |
|---|---|---|
Sustainable Resources | LEED MR Credit 6 | Byproducts get recycled, so less waste and more saved resources. |
Packaging Efficiency | LEED MR Credits 2 and 4 | Better packaging uses less stuff and more recycled or reusable materials. |
Waste Minimization | LEED MR Credits 2.1 and 2.2 | Not much waste is made, and leftovers can be used again or recycled. |
Responsible Disposal | LEED MR Credits 2.1 and 2.2 | Panels break down in nature and can be recycled, so they are easy to get rid of. |
Indoor Air Quality | LEED EQ Prerequisite 1, EQ Credits 1, 4.1, 4.4 | Panels do not let out bad chemicals, so the air inside is cleaner. |
Reusability | LEED MR Credits 3.1 and 3.2 | You can take off panels and use them again if you use screws. |
Energy Efficiency | LEED EA Prerequisite 2 | Using this wallboard can help buildings use less energy by 10% for new and 5% for old ones. |

Choosing this wallboard is good for your building and the earth. It helps you build in a way that is better for the future and meets green rules.
Lifecycle and Recycling
Magnesium wallboard lasts a long time, so you do not need to change it often. When you are done with it, you can recycle it and it does not let out bad stuff. This makes it safer for the earth than many other wall materials. Here is how it compares to other choices:
You can recycle magnesium wallboard and it does not make toxins.
Gypsum drywall has some recycled parts but is harder to throw away.
Cement boards, like magnesium cement boards, are also good for recycling and the earth.
Using this wallboard means less trash goes to landfills and the earth stays cleaner. You also help make homes and buildings healthier for everyone.
Tip: Ask your builder about how to recycle old wallboard. You can help make less trash and keep the planet greener.
Magnesium wall boards make buildings safer and stronger. They help keep your space healthy. These boards stop fire, water, and mold. You spend less money fixing walls. Magnesium wall boards last a long time. They are good for the environment.
Stops fire and water damage
Makes air inside cleaner
Simple to put up and take care of
Think about using magnesium wall boards for your next job. You can learn more from green building books or local stores.
FAQ
What makes magnesium wall board safer than drywall?
You get better fire protection with magnesium wall board. It does not burn or release toxic smoke. Drywall can catch fire and weaken quickly. Magnesium wall board keeps your home safer during emergencies.
Can you use magnesium wall board in bathrooms?
Yes, you can use magnesium wall board in bathrooms. It resists water, mold, and rot. You do not need to worry about swelling or damage from moisture. Always seal the edges for best results.
How do you clean magnesium wall board?
You clean magnesium wall board with a damp cloth and mild soap. Avoid harsh chemicals. Regular cleaning keeps the surface looking new. You do not need special products or tools.
Is magnesium wall board eco-friendly?
Magnesium wall board uses natural minerals and does not release harmful chemicals. You help the planet by choosing a recyclable and sustainable material. It supports green building standards.
Does magnesium wall board cost more than regular drywall?
You pay more for magnesium wall board upfront. It lasts longer and needs fewer repairs. Over time, you save money because you do not replace or fix it as often.

Safety and Indoor Air Quality
Drywall Comparison
Sustainability