
04 Apr How to use mgo board in modular house subfloor construction
Table of Contents
MGO boards are strong and fireproof, perfect for modular house floors. They can handle heavy impacts without breaking, better than cement boards. These boards resist water, stopping mold and rot for lasting floors. Rated as A1 non-combustible, they handle heat up to 1200°F. They do not release harmful fumes, making them safer in fires. Made from recyclable and safe materials, they are eco-friendly. These boards are light and simple to use, making building faster. They keep the structure strong while saving time in construction.
Key Takeaways
MGO boards are tough, fire-safe, and water-resistant. They work well for modular house subfloors.
Preparing the subfloor is very important. Clean it well and make sure it is flat and strong to prevent problems later.
Use proper tools and materials, like special screws and glue suggested by the maker, for a safe setup.
Install step-by-step. Start in one corner, keep spaces even, and attach the boards tightly.
MGO boards are good for the environment and can be recycled. They help build strong, safe, and eco-friendly homes.
Tools and Materials for Installing MGO Boards
Essential Tools
Measuring tape and pencil
Use a measuring tape and pencil to mark sizes on the boards. Correct measurements help the boards fit well, avoiding gaps or uneven spots.
Circular saw or utility knife
Cutting MGO boards needs strong tools. A circular saw with a diamond blade cuts smoothly. A utility knife works too but takes more effort. These tools stop cracks or damage while cutting.
Power drill and screws
A power drill secures boards to the subfloor frame. Use screws made for subfloor boards to hold them tightly. Place screws evenly to keep the boards steady.
Safety gear (gloves, goggles, mask)
Wear safety gear to stay safe while working. Gloves protect hands from sharp edges. Goggles stop debris from hitting your eyes. A mask keeps you from breathing in dust.
Tip: Be gentle with MGO boards to avoid breaking them. They need careful handling for the best results.
Required Materials
MGO boards
MGO boards are the main part of your subfloor. They are tougher than gypsum boards and resist impacts better. They are also light, making them easy to carry and use.
Adhesive or sealant recommended by the manufacturer
The right adhesive or sealant sticks the boards to the frame securely. Follow the manufacturer’s instructions for the best outcome.
Screws or fasteners
Pick screws or fasteners made for subfloor boards. These keep the boards strong and steady, even in busy areas.
Subfloor framework materials (e.g., joists)
A strong subfloor frame supports the MGO boards. Make sure the joists are even and sturdy for a solid base.
Note: MGO boards don’t crack, warp, or shrink easily. They last longer and work better than plywood or drywall. They also resist fire and water better.
Getting Ready for MGO Board Installation
Getting the Subfloor Ready
Clean the area to remove dirt and dust.
First, clean the subfloor completely. Get rid of all dirt, dust, and loose bits. This makes the surface smooth for the boards. A clean base helps the MGO boards stick well and stay even. Use a broom or vacuum to clean it properly.
Tip: Focus on corners and edges where dirt hides. A clean subfloor makes your installation last longer.
Check if the subfloor is flat and strong.
Look over the subfloor for any problems. Check for cracks, sagging, or termite damage. Use a moisture meter to check the moisture level. For wood, keep moisture between 2-4%. For concrete, make sure humidity is under 75%.
Follow the manufacturer’s rules for thickness and materials. Fix any issues like rot or loose parts before starting. A flat and sturdy subfloor is key for success.
Subfloor preparation checklist:
Clean and no dirt.
Flat and even surface.
Strong with no damage.
Getting the MGO Boards Ready
Measure and cut boards to fit the subfloor size.
Use a tape measure to find the subfloor’s size. Mark the MGO boards with a pencil. Cut them with a circular saw and diamond blade for clean edges. Check your measurements twice to avoid mistakes.
Look for damage in the boards.
Check each board for cracks, chips, or other issues. Damaged boards can weaken your subfloor. Replace any bad boards before using them.
Find the smooth side of the boards for the top.
MGO boards have a smooth and a rough side. The smooth side should face up for better sticking and a neat look. Mark the smooth side to avoid mix-ups during work.
Note: Preparing both the subfloor and boards well makes the installation smooth and durable.
Step-by-Step Installation of MGO Boards

Laying the Boards
Begin at one corner of the subfloor frame.
Start by placing the first board in a corner. This helps keep the process organized. Measure the area for the boards. Mark and cut them to size with a saw or knife. Make sure cuts are neat for a good fit. Leave a 6mm gap between boards and walls. This gap stops the boards from bending later.
Add adhesive or sealant to the joists for strength.
Put adhesive or sealant on the joists before laying boards. This step makes the boards stick better and stay steady. Use the adhesive type the manufacturer suggests. After applying, carefully place the boards on the frame.
Tip: Lay one board at a time to avoid mistakes and gaps.
Securing the Boards
Attach boards to the frame with screws or fasteners.
Use screws or fasteners to fix the boards to the frame. Start screwing from the middle of each board and move outward. This keeps the pressure even and stops warping. Keep screws 200-250mm apart for strong support. This spacing helps the boards stay firm under heavy weight.
Make sure screws are level with the board surface.
Check that screws are evenly spaced and flat with the board. Screws sticking out can make the floor uneven. Use a power drill for smooth and even results.
Note: Proper screw placement is key for a strong and lasting subfloor.
Finishing the Installation
Seal gaps or seams with joint compound.
Look for spaces between the boards. Fill these gaps with sealant or joint compound. This step stops water from getting through and gives a smooth finish.
Use primer on boards to prepare for finishing.
After sealing gaps, apply primer to the boards. Primer protects the surface and gets it ready for paint or flooring. Follow the drying time given by the manufacturer.
Check the subfloor for strength and smoothness.
Inspect the subfloor for any issues. Look for stability, evenness, and missed gaps. A careful check ensures the subfloor is ready for the next steps.
Reminder: A well-done subfloor makes construction faster and lasts longer.
Benefits of Using MGO Boards in Modular Construction
Durability and Strength
Resistant to moisture, mold, and pests
MGO boards are tough and perfect for modular house floors. They block water, stopping mold and rot from forming. This keeps the indoor space healthier and lasts longer. These boards also resist pests like termites, which harm other materials.
Tip: Use MGO boards in damp areas to keep them strong and effective.
Long-lasting and low maintenance
MGO boards are easy to care for because they are durable. They don’t crack, bend, or shrink, even in tough conditions. Tests like aging and environmental checks prove their lasting strength. These tests show MGO boards stay stable and don’t wear out quickly, making them reliable for modular homes.
Test Type | What It Does |
---|---|
Aging Tests | Mimics years of heat and moisture to check changes. |
Environmental Checks | Puts boards in different conditions to see how they hold up. |
Real-Life Monitoring | Studies installed boards over time to see how they perform. |
Fire Resistance
Non-combustible material enhances safety
MGO boards are fireproof, making them safer for modular homes. They don’t burn easily and work well in fire-rated areas like floors. Made from natural minerals, they stay stable up to 1200°C. Unlike some materials, they don’t release harmful gases in fires, keeping people safer.
MGO boards stay strong in wet or changing weather.
They don’t catch fire easily, adding safety to buildings.
Their fireproof nature makes them great for fire-risk zones.
Eco-Friendly and Sustainable
Made from sustainable materials with minimal environmental impact
MGO boards are eco-friendly and safe for the planet. They are made from non-toxic, asbestos-free materials, which follow safety rules. Their production uses fewer resources, lowering their environmental impact. Plus, they can be recycled, reducing waste and saving resources.
Note: MGO boards don’t release harmful chemicals, improving air quality in homes, schools, and other spaces.
Choosing MGO boards makes modular buildings stronger and greener. Their toughness, fire safety, and eco-friendly features make them a smart choice for modern construction.
Compatibility with Modular Construction
Light and simple to use, making building faster.
MGO boards are great for modular construction because they are light. You can carry and place them easily during setup. This reduces effort and speeds up the work. Their light weight is perfect for off-site building, where speed matters. Using MGO boards helps finish projects faster without losing quality.
Their lightness also makes them easy to customize. You can cut and shape them with regular tools to fit designs. This flexibility helps meet the needs of modular projects. Plus, handling them is simple and doesn’t need big machines. This makes installation quicker and more efficient.
Here’s how MGO boards make off-site building faster and easier:
Metric | Description |
---|---|
Light MGO boards are simple to handle and set up. | |
Saves Labor Time | Quick setup means less time and lower labor costs. |
Customizable | MGO boards can be shaped to fit different designs. |
By saving time and making setup easier, MGO boards cut costs while keeping quality high. They work well with modular building methods, keeping the process smooth and fast. Whether for homes or offices, these boards are a smart choice for quicker construction.
Tip: Use MGO boards in modular builds to save time and finish faster.
Common Mistakes to Avoid with MGO Boards

Skipping Preparation Steps
Not cleaning or leveling the subfloor
Skipping prep steps can cause big problems later. Always clean the subfloor to remove dirt and dust. A dirty base makes boards unstable and hard to stick. Leveling the subfloor is also very important. Uneven areas can lead to gaps or bubbling in the flooring. Moisture testing is a must too. Hidden moisture can ruin adhesives, grow mold, and weaken the boards.
Mistakes during prep include:
Skipping moisture checks
Poor cleaning or uneven subfloor
Ignoring instructions from the manufacturer
Good preparation helps avoid problems like health risks or unhappy results. Take time to clean and level the subfloor properly.
Incorrect Installation Techniques
Using screws that aren’t made for subfloors
Wrong screws can make the boards loose and unsafe. Always use screws made for subfloor setups. These screws hold the boards tightly and keep them steady. Using the wrong ones can cause creaking floors or weak spots.
Misplacing the boards during installation
Boards that don’t line up can create uneven floors. Make sure each board fits closely to the next one. Even small mistakes can mess up the whole subfloor. Measure and place each board carefully for the best results.
Tip: Check your board placement twice before securing them to avoid errors.
Neglecting Safety Measures
Skipping safety gear while working
Safety is very important when cutting or installing boards. Without gloves, goggles, or masks, you risk injuries or breathing in dust. For example, many workplace injuries happen because workers skip safety gear. Wearing protective items keeps you safe and avoids accidents. Gloves protect hands, goggles shield eyes, and masks stop dust from entering your lungs.
Reminder: Always wear safety gear to stay safe and work better.
Ignoring Manufacturer Guidelines
Using adhesives or sealants not recommended by the manufacturer
Using the wrong glue or sealant can weaken your subfloor. Manufacturers test their products to work with certain materials. Ignoring these rules can cause weak bonds, gaps, or damage to MGO boards. Using the right products makes your subfloor strong and long-lasting.
For example, moisture-cured urethane adhesives like ChemLink M1 are great for MGO boards. This adhesive sticks well to wood, metal, foam, and laminates. ChemLink M1 is a trusted option for securing MGO boards in many projects. Using tested products gives better results.
Tip: Always read the manufacturer’s instructions to pick the right adhesive.
If you use the wrong glue, the structure may fail. Incorrect adhesives might not hold the board’s weight or handle moisture and heat. Over time, this can loosen the boards and cause expensive repairs.
To avoid problems, make a checklist before starting:
Check if the adhesive matches the manufacturer’s advice.
Make sure it works with the subfloor material.
Confirm it can handle the site’s moisture and temperature.
Following these steps helps avoid mistakes. Picking the right adhesive makes the bond stronger and your subfloor last longer.
Reminder: Choosing the right adhesive is just as important as picking the right MGO board. Both are needed for a strong and stable subfloor.
Getting ready with the right tools is key for success. MGO boards are strong, fireproof, and good for the environment. Their light weight makes building easier and faster. By using this guide, you can build a solid subfloor. This method improves construction quality and helps the planet too.
FAQ
What is an MGO board, and why is it used in construction?
An MGO board is made from magnesium oxide. It is strong, fireproof, and eco-friendly. Builders use it for floors, walls, and ceilings. It resists water, mold, and pests. Its light weight makes it easy to work with.
Can you cut MGO boards with regular tools?
Yes, you can cut MGO boards with common tools. Use a circular saw with a diamond blade or a utility knife. These tools give smooth cuts and avoid damage. Always wear gloves, goggles, and a mask to stay safe.
How do you ensure MGO boards last longer?
Good preparation and proper installation are important. Clean and flatten the subfloor, use the correct adhesive, and follow instructions. Seal gaps and keep boards dry to make them last longer.
Are MGO boards safe for indoor use?
Yes, MGO boards are safe to use indoors. They are non-toxic and free of asbestos. They don’t release harmful gases. Their fireproof and waterproof features make them great for homes, schools, and offices.
What makes MGO boards eco-friendly?
MGO boards are made from safe, natural materials. They are recyclable and use fewer resources to produce. Choosing MGO boards helps reduce waste and supports green building practices.