Does Wood Glue Work On MDF? Joining MDF Boards In 5 Easy Steps

Does Wood Glue Work On MDF? Let’s discuss how to go about gluing MDF…

Wood glue is a famous woodworking adhesive that penetrates lumber fibers to join and strengthen boards.

It also comes in handy in assembling cupboards and bonding various building materials.

On the other hand, a medium-density fibreboard (MDF) is an engineered wood product used to make boards.

It is widely available and carves effortlessly to excellent shapes, making it suitable for various DIY projects.

Nevertheless, using quality lumber is not the only requirement for an MDF project. You also need to choose the best glue and use it correctly.

Therefore, consider this write-up for more understanding of these products. We’ll answer the question does wood Glue work on MDF?

Wood glue works on MDF. Besides, you can use any wood glue type with medium-density fibreboards and expect a perfect outcome.

However, deciding between edge and face-to-face gluing is advisable. In addition, the end grain makes edge gluing MDF pretty challenging.

So, it is best to use special adhesives instead of regular ones to deliver excellent joints.

Further, the above is not all about the role of wood glue in MDF projects.

This article gives more information on which wood glue varieties to consider and how to use them for the best result. 

What Is Wood Glue?

Although wood glue refers to PVAs, we have projects needing another adhesive, such as epoxy. But still, the first glue woodworkers prefer is a PVA.

Polyvinyl acetate, a rubbery polymer delivering a sturdy bond, is the primary ingredient in PVAs. In addition, it seeps into the lumber fibers, creating stronger joints.

Moreover, whereas super glue depends on moisture to cure, PVAs release their water and dry during curing.

Wood glue comes in multiple colors, with carpenter glue featuring a yellowish hue.

For moisture-exposed projects, you can also bank on its water resistance and proofing abilities.

Hence, the adhesive bonds well for outdoor and indoor applications.

Wood glue’s strength is roughly 3,600 to 4,000 psi, meaning it can withstand pressure between 3,600 and 4,000 pounds per square inch.

Interestingly, glue’s adhesive bonds are more potent than most woods. Thus, the wood may fail faster than the bond.

Other famous wood glue varieties include

• Polyurethane Glue

This adhesive, also known as Gorilla Glue, accommodates various materials: metal, ceramic, glass, wood, and stone.

Also, while wood glue hardens during drying, polyurethane needs moisture to cure.

Polyurethane glue has the same tensile and sheer strength as PVA, generally ranging from 3,000 to 3,500 psi.

However, the product’s limited shelf life, short working time, and high price make it less favorable to woodworkers.

Thus, PVA is the popular option for most wood tasks.

But still, polyurethane has applications where it excels. For instance, it can join two irregular wood pieces as it expands to fill gaps in the joint.

• Two-part Epoxies

An epoxy joins materials and repairs various projects ranging from plumbing to stone and ceramic details. Besides, their use is more comprehensive than woodwork.

So you can use it for multiple construction tasks.

The adhesive’s bond is also similar to a PVA glue, ranging between 2,000 to 4,000 psi. Thus, you can expect a durable joint.

However, epoxies are more challenging to apply due to their two-part process. In addition, they are more pricey.

But even then, the formula works excellently in cases with uneven pieces and is waterproof, unlike PVA glues.

Finally, epoxies are available in multiple working and curing durations.

Sometimes the handling time is as short as 15 minutes, but remember, the longer the drying time, the stronger the bond.

• Natural Protein Solutions

Previously, woodworkers used glue-laminated wood like glulam and plywood, glue from natural proteins to join lumber layers.

However, over time, petroleum-based adhesives displaced them.

Later, the U.S. revised its interest in natural protein gloves, especially those from soy products, since they are more eco-friendly and lesser toxic.

What Is MDF?

MDF is an abbreviation for medium-density fiberboard.

It comes from heated and compressed shavings, sawdust, resins, and waxes.

As a result, you have uniform layers with no tangles or grain, giving a stable but thick material.

Medium-density fiberboards are thicker than plywood and tougher and denser than particleboard.

Thus, they have been replacing wood in modular and furniture products.

MDFs are lightweight, making them suitable for do-it-yourself home tasks like cabinets and shelving.

They are also porous and thus stick well with the correct glue and application combination.

However, please avoid using too much adhesive, as it can damage the lumber and ruin your project.

Moreover, although MDF is unprimed by the manufacturer, it does not need a primer before topcoat application. So you can seal the surface immediately after purchase.

Here is a summary of the material’s benefits.

• Medium Density Fiberboard holds hinges and screws better, thanks to its density.
• Unlike natural wood, the boards do not expand or contract due to temperature changes. In addition, it experiences negligible swelling despite moisture exposure.
• MDF has no grain, making it perfect for machine handling.
• It also has smooth edges, so you can cut and carve the workpiece into various designs. 
• The material comes from wood chips, making it more affordable than natural wood. Also, you will deliver an authentic wood appearance without spending more money.
• MDF is termite and insect resistant as manufacturers chemically treat it during production.
• It has a smooth surface free of knots and glitches.
• Finally, you can easily stain MDF workpieces to imitate ‘real’ lumber. In addition, laminates and wood veneers help mimic a natural appearance.

Types of MDF Glue

We have three primary MDF glue types in the market. They include Polyvinyl Acetate, Plastic Resin Glue, and Epoxies.

• PVA, or Polyvinyl Acetate

White and yellow PVAs are the most famous wood glue types in woodworking. Besides, they work perfectly for indoor DIY woodwork, attracting an amateur’s attention.

PVA is economical, non-toxic, easy to handle, and has a quick drying duration.

In addition, the manufacturer combines polyvinyl acetate particles with standard water glues to create a superior adhesive.

Furthermore, these tiny particles join to deliver an opaque, stretchy liquid that properly needs two days to cure.

Although white PVA adhesives are authentic, yellow-based ones are sturdier and dry quickly.

Also, sanding over yellow glue is easier when repairing or repainting wood items.

Unfortunately, the glue does not fare well in humid conditions. Moreover, it is best for outdoor projects unless stated otherwise by the manufacturer.

Lastly, PVA is perfect for fixing and sealing the wood grain. It also tightens and reinforces the lumber’s fibers for effortless smoothing.

• Plastic Resin Glue

This adhesive is best for large-scale applications like outdoor carpentry and furniture construction. 

Besides, it comes in powder form, requiring you to mix it with a suitable reactive agent like resin or pure water.

As a result, you deliver a potent plastic polymer-like bond.

Plastic resin glue is also available in multiple colors. Therefore, you can get a shade matching your woodworking project.

Moreover, although the glue is robust and suitable for various projects, it contains urea-formaldehyde, making it toxic.

Therefore, wear protective clothing such as masks and gloves to avoid inhaling and touching the strong solvent.

Plastic resin glue has a longer drying duration but holds well after curing.

Further, removing the adhesive from surfaces is challenging as it highly resists paints and thinners.

In addition, you need some practice and experience due to the glue’s toxicity.

And although you can use this glue for interior and exterior applications, please avoid handling it near food and water.

• Epoxies 

Medium-density fiberboards work excellently with resins and epoxies. Further, the boards come in various shapes and sizes, creating an ideal surface for resin artwork.

Epoxies are a suitable two-part adhesive for MDF projects as they are available in slow and quick set variants.

However, this aspect depends on your preferred drying time preferences.

Quick-setting or fast-drying epoxies need one to ten minutes to dry and a few hours to cure.

On the other hand, slow-setting ones take up to two days to harden and have a seven-day curing duration.

The primary benefit of this glue is that it waterproofs the project.

As a result, it fills wood gaps and fractures excellently, unlike other wood adhesives that do not adhere well in spaced wood pieces.

Conversely, the drawback of epoxies is that they are more pricey than regular wood glues.

Therefore, understanding different glue variables is advisable. This way, you can choose the most suitable product for your MDF project.

Now that we know the different types of wood glues, are there specific brands to consider? Let’s find out in the next section.

We have the top three products to choose from for your MDF project.

• Titebond III Ultimate Wood Glue

This adhesive features superior strength that resists environmental factors and natural disasters.

In addition, it features advanced proprietary technology surpassing the ANSI/HPVA type one test. As a result, you can expect impressive water-resistance qualities.

Titebond Ultimate needs more time to dry. Otherwise, using it before fully curing ruins the bond. So, wait at least an hour to guarantee a better outcome.

The glue is safe for pets and kids as it is non-toxic and has FDA approval. However, please buy what you need within a year to avoid wastage.

• Gorilla Wood Glue

This glue joins various natural wood composites, including hardwoods, softwoods, and MDF.

Further, it only needs 20 to30 minutes to set before dismantling the clamps.

Afterward, the adhesive takes two days to cure thoroughly. Also, it allows for easy clean-up, making your work manageable after application.

Gorilla glue is waterproof and does not fail due to unfavorable weather conditions. Thus, you can use it anywhere with much ease and contentment.

• Elmer’s Carpenter’s Wood Glue Max 

Thanks to this adhesive, woodworkers can deliver durable bonds and joints. In addition, it bonds all wood types, accommodating various applications.

Elmer’s Carpenter’s Wood Glue delivers superior waterproof qualities and heat, mold, and mildew resistance.

However, please note that MDF is not waterproof. So, please keep your project away from prolonged moisture exposure.

The glue needs two days to cure thoroughly after setting. Then, it delivers a lovely natural color that you’ll sand and stain effortlessly.

Even better, you won’t have safety issues as the product is non-toxic.

Generally, any of the above products guarantees a successful project. But getting the most suitable one for your specific MDF task is advisable.

Factors to Consider Before Buying Wood Glue

Below are vital factors to think about before getting wood glue.

• Application and Adhesion Strength

Various wood adhesives require different application techniques to deliver the desired outcome.

For instance, spread non-toxic formula with your finger or a brush but get squeeze bottles for epoxy and plastic resin-based ones.

In addition, plastic resin glue is poisonous and should not have direct food contact.

PVA wood glue, epoxies, and plastic resins attach MDF to actual lumber or MDF to MDF.

However, all-purpose epoxy and plastic resin are the perfect options when adhering MDF to other surfaces like wallboards.

This bonding type (MDF to wallboard) is the strongest and most durable.

But generally, all adhesives form bonds stronger than MDF. Therefore, the joint’s integrity relies on the materials’ authenticity.

Lastly, consider dowels to facilitate a solid binding. And remember that strong connections also depend on the correct dowel amount.

• Cure and Assembly Time

Wood glues have various operation rules. For instance, consider fast-drying adhesives when joining multiple MDF panels and slower-drying ones when not in a hurry.

In addition, some MDF projects need a mixture of the two to deliver a quick and lasting hold.

Further, understanding the variance between setting and curing in wood glue is essential.

Some products are set within minutes, delivering the original bond between surfaces. Then adhesives like superglue need a 30 to 40 minutes drying time.

Further, curing refers to the duration the adhesive needs to reach its strongest hold. And superglue is a perfect option when working with a deadline.

However, please note some projects need premium wood glue to deliver a professional outcome.

• Easy to Clean 

Sometimes, assembling Medium-density fiber boards is strenuous and chaotic. For instance, excess glue will be left after screwing, clamping, and doweling.

Fortunately, most wood glues are more manageable and easy to clean than other MDF adhesives.

Besides, you can clean unhardened PVA glue with an old card scraper or a wet paper towel.

Acetone and paint thinner also come in handy when removing excess glue.

However, the solvents can ruin the finished surface. So, please use them carefully and when necessary.

Finally, seal off MDF areas where excess glue may run. This way, you save yourself the hassle of cleaning dried wood glue.

How to Stick Two Pieces of MDF Together?

Medium-density fiberboard is generally an updated version of particle boards. Besides, it has a much-improved moisture resistance and texture.

Therefore, you will find the material as a staple in furniture and cabinet-making projects.

MDF works excellently with standard working devices and is pretty affordable to users. In addition, it attaches projects well using adhesives and standard fasteners, like screws and nails.

Furthermore, since the material is a countertop substrate, you will frequently find it attached to plastic laminate or wood veneer.

But how do you stick two MDF pieces together?

First, gather the necessary supplies. They include

• Wood glue
• Sander
• Nails
• Pilot bit
• Clamps
• Screws
• Contact cement
• Pin nailer
• Solvent-based wood filler
• Roller
• Auto-body putty

Next, check out the procedure below.

• Step One: Sand the Material

Sand the MDF’s edges and faces to be attached to the other surface. Please be thorough and strip off any previous finishes.

Remember, wood glue works by soaking into the material, then hardening to deliver a weld between the pieces.

Thus, substances sealing the board’s surface prevent the adhesive from penetrating the material.

As a result, you’ll have less effective joints.

• Step Two: Attach the Pieces

Use standard fasteners and adhesives to attach MDF to MDF. Further, use the carpenter’s white wood glue, hide glue, or PVA to deliver the joints.

In addition, the wood has a more brittle texture and is heavier than hardwood and plywood. Hence, use nails and screws to hold the joint as the glue cures.

You can also use bar clamps or other woodworking devices to support heavier MDF pieces.

• Step Three: Drill Pilot Holes

Pilot holes are handy in ensuring the fasteners are in the correct place. Besides, medium-density fiberboards are less flexible than hardwood and plywood.

Hence, they tend to split when you drive fasteners into an unprepared surface.

Air nailers do a better job than nailing finish nails into the board’s fragile edges. Moreover, a hammer’s impact dents the material, whereas hand-finish nails are thicker.

• Step Four: Apply Some Contact Cement

Spray or roll a contact cement coat on the MDF’s surface. And focus on the side you’ll attach to the wood veneer or countertop laminate.

Also, apply a second coat at the back of the material you attach to the fiberboard.

Allow the wood glue to dry thoroughly before pressing the joined pieces.

Then, roll the wood veneer or laminate with a roller to remove air pockets and facilitate a perfect joint.

• Step Five: Repair the MDF Surface

Use two-part auto-body repair putty or a solvent-based wood filler to repair the fiberboard.

Besides, the material’s pores are too small to accommodate standard lumber putties and fillers.

Therefore, it is prudent to complete this step. Otherwise, the repair will detach from the MDF’s surface.

Here’s How to Join Two Pieces of MDF:

How Long Does Wood Glue Take to Dry On MDF?

Generally, wood glue needs 24 hours to cure before unclamping the joined pieces. Further, the formula’s drying duration ranges from 20 minutes to several hours.

Remember, the drying duration depends on a few factors, including the wood type, temperature, and moisture levels.

Besides, even the fastest-drying adhesive takes longer to dry when these conditions are suboptimal.

Nevertheless, the general rule is to allow freshly applied lumber glue to dry for at least 24 hours before unclamping.

Unfortunately, some woodworkers find this timing too much, but it is safer to err on caution.

Some wood glue types have specific drying directives on the label. For example, Titebond recommends 30 minutes to one hour before clamping unstressed glue joints.

Also, you need up to 24 hours for the stressed joint to give the best outcome.

Typically, there is always a temptation to get brands with a quick-drying reputation. But this is not a good thing.

Most fast-drying adhesives do not deliver the required bonding characteristics.

Thus, getting a wood glue that creates a sturdy bond is better, even if it requires prolonged drying and curing durations.

Curing and drying may seem interchangeable in woodworking, but they are different concepts. Besides, curing refers to a state where the adhesive’s bond is strongest.

On the other hand, drying means the glue is strong enough to hold the project without clamps. 

So, we say the adhesive is dry if you can comfortably remove the clamps on the joint.

Wood glue’s set time is another term you’ll come across when working with adhesives.

It’s usually the time the formula needs to deliver an adequately strong bond between the lumber pieces.

Generally, we say that the adhesive is set when it noticeably hardens. Further, completing this process takes around 15 minutes to half an hour.

Please also note that wood glue is not necessarily dry after setting. Moreover, the drying duration is longer than the set time.

Wood adhesives reach maximum hardness after curing. Therefore, give the project more time to cure thoroughly before using the workpiece.

Below are factors to consider when determining the glue’s drying time.

• Moisture 

The moisture issue comes from the materials being attached. For instance, you can expect slower drying if the lumber is damp or has some moisture.

Furthermore, wood adhesives dry by evaporating moisture into the atmosphere.

Hence, the moisture may not escape through wood with high moisture content, resulting in more drying time.

As such, use dry wood for your project to minimize this duration and complete your work sooner.

• Temperature  

Most wood adhesives dry faster in high-temperature areas while creating and setting the desired strong bonds.

Conversely, low temperatures result in more prolonged waiting as the wood dries slowly.

However, although high temperatures accelerate the glue’s drying duration, it also causes some brands to melt.

But this is not a big deal as most wood glue varieties are high-temperature resistant and do not melt upon contact.

• Humidity

Typically, high-humid areas have more moisture in the air, hindering moisture evaporation from the adhesive.

Furthermore, while the glue eventually sets and cures, it struggles to do so, resulting in a prolonged drying process.

• Ventilation

Proper ventilation facilitates adequate air circulation, carrying away atmospheric moisture. So, you have dry air necessary for fast drying.

As such, the adhesive dries faster outdoors and in relatively windy weather. In addition, you can still deliver a perfect outcome indoors with open windows or an active fan.

• Wood Type

Wood glue takes longer to dry and cure in highly porous lumber. And such materials need more liquid to deliver a satisfactory bond.

As a result, the wood pores suck up more glue, creating a thick layer that needs more time to set and cure.

Is It Possible to Use MDF Glue to Attach a Board to a Wall?

You can use MDF glue to attach boards to a wall, but there are drawbacks to the process. MDF needs more glue, requiring you to apply it liberally.

In addition, mechanical fasteners like finish screws and nails are necessary additions since MDF is pretty heavy.

Unlike construction adhesives, lumber glue does not hold wood to drywall well. Besides, the adhesive is meant for wood-to-wood projects.

So, you may not get a durable result when using wood glue to attach a board to drywall.

Does Gorilla Wood Glue Work On MDF?

Gorilla glue is multipurpose and works perfectly for Medium-density fiberboards. Further, the resulting bond is suitable for various softwood, hardwood, and composite materials.

Therefore, you are sure of proper adhesion.

The glue’s primary advantage is its industrial holding prowess. Woodworkers testify that it is efficient for ceramic, glass, foam, and metal.

Gorilla glue is also temperature resistant, waterproof, and stainable.

However, applying the adhesive to Medium-density fiberboards is challenging. Thus, you need some professional tips to complete the work.

For instance, remember dirt and sanding dust compromise the glue’s adhesive properties.

So, start the project by cleaning the mating surfaces. Then, let the dry thoroughly before adding the glue.

How to Seal the MDF Material Before Painting?

We have multiple techniques for sealing medium-density fiberboards and protecting them from humidity and moisture threats.

The project’s supplies include

• Gloves
• Safety goggles
• A face mask
• An overall or long-sleeved clothing
• Plastic sheeting or drop cloth
• Sanding pad or sandpaper
• Sealer
• Paint roller
• Putty knife
• Synthetic-bristled paintbrushes

Then, check out the steps below for a successful project.

• Protect Yourself

The project involves products with different chemical compositions. Besides, some of these compounds are harmful to your health.

Therefore, the first step is to wear protective clothing.

Furthermore, most sealing MDF formulas are safe to inhale and touch. But better safe than sorry!

So, take all the necessary safety precautions as you start the work. In addition, wear a safety mask, eye protection, long-sleeved clothing, and gloves for superior protection.

Lastly, working in a well-ventilated work area is also advisable. You can use the workshop, garage, or some sheltered space outside the house.

• Scuff the Workbench Top 

The project needs a moderately smooth and rough surface to deliver the best sealing results. Therefore, sanding is mandatory.

Use medium-grit paper, say 220-grit, or a sanding block for more control. Further, wear a safety mask and eye protection to prevent dust from invading your lungs and eyes.

Sand in circular patterns and ensure gentle and uniformly distributed pressure across the workpiece.

Also, you do not need to follow the wood grain for an even finish.

• Seal the Edges 

Start with the edges when handling medium-density fiberboards. Besides, these areas are more porous and rougher than other sides.

As a result, they soak in more paint and water, leading to irreparable damage if unsealed.

Fortunately, the sealing agent solidifies on the surface, forming an impenetrable layer on these edges. And we have various products for this step.

• Method One: PVA Glue

This alternative works best for amateurs as it is straightforward. For example, you can apply PVA glue with a glue spreader or a synthetic paintbrush.

In addition, a sprayer will deliver a perfect result for extensive workpieces.

Let the first layer dry before sanding it with medium-grit paper. Also, please avoid too much pressure, as the idea is only to scuff the surface a bit.

• Method Two: MDF Edging Tape 

This option, also known as edge banding, features a thin adhesive veneer strip pre-glued on one side.

Further, it comes in multiple types, prices, and sizes to accommodate various applications.

Cut the sheets into strips and match them with the MDF’s width and length. However, ensure you leave some bits over the composite board’s edges.

In addition, position the matching MDF edging tape strip over the edge. Then, apply some heat.

The easiest way to heat the strip and stimulate adhesion is by ironing it to the MDF. So, adjust the household iron to a medium heat setting.

Afterward, move it slowly over the workpiece, applying gentle and uniform pressure.

Finally, smooth the workpiece with a woodblock to guarantee even and excellent adhesion. Then, trim the edges carefully to remove excess sheeting and overhang.

• Method Three: Oil-based Filling Primer

Seal the workpiece’s edges with an oil-based filling primer. Apply the formula the same way as PVA adhesive, using a synthetic fiber paintbrush.

You can also spray the primer and expect a satisfactory outcome.

Then, let the formula dry to the touch before sanding. In addition, use gentle motions to avoid sanding the primer coat.

• Method Four: Wood Filler

Use putty or wood filler to seal the MDF’s edges or flat areas. Further, apply the paste with a putty knife for a thin, uniform layer.

Give the paste enough time to dry. You can consult with the manufacturer for accurate timelines.

Then, sand the surface.

In addition, use a wood filler that matches or compliment the MDF for professional results. You can also improvise a formula for a more satisfactory project.

• Method Five: Drywall Compound and Primer

This strategy combines drywall compound with lacquer primer. Also, it is a two-step technique, requiring more time than the first four.

First, rub the drywall compound uniformly on the MDF’s edges and let it dry. Next, wipe off the excess for an even layer.

In addition, scuff the surface after drying and apply the lacquer primer.

You can get a roller or a paintbrush to apply the formula or stick to the manufacturer’s recommendations.

• Seal the Surface

Although medium-density fiberboard comes in various colors, it is highly porous and quickly absorbs significant moisture amounts.

Therefore, sealing is advisable to deliver successful painting results.

Furthermore, adding a paint coat directly to MDF boards causes adhesion issues. The material has a sleek sheen, requiring adequate preparation before painting.

After sealing the MDF’s edges, it’s time to work on the workbench top’s surface.

Moreover, we have multiple techniques to adopt, allowing you to choose the most convenient.

They include

• Method One: Use a Spray-on Lacquer 

A transparent or tinted spray lacquer is the best for this project. It seals the board and serves as a primer.

In addition, the formula works perfectly for outdoor finishing applications. Otherwise, standard lacquers deliver glossy finishes that cannot hold paint coats.

• Method Two: Use PVA Glue

This adhesive comes in liquid form even though it cures into a robust, solid surface. Further, keeping the layers thin and uniform is prudent for a professional outcome.

You can also use your preferred applicant for the project, a sprayer or synthetic bristled paintbrush.

Most PVA-based glues need dilution to deliver thin sealing layers. However, always use water for this process as solvents may ruin the MDF.

• Method Three: Use an Enamel Primer 

Apply thin enamel coats to cover the MDF. Besides, the formula comes highly recommended for priming MDF workpieces, especially before painting.

Also, match or compliment the primer color to the paint’s color to deliver a more consistent appearance.

Here’s How to Seal MDF:

Conclusion

Carpenters, DIY enthusiasts, and woodworkers use wood glue in various projects. Besides, it is a sturdy adhesive that delivers tight joints with wood boards.

Moreover, nowadays, artisans prefer medium-density fibreboards over solid wood due to their wide availability, affordability, and ease of use.

But MDF beginners question the efficacy of wood glue on the product.

Therefore, check out the above discussion to quench your curiosity:

Does Wood Glue Work On MDF?

MDF boards bond well with wood glue. Even better, you are sure of excellent joints with good fasteners and suitable adhesives.

However, select the best adhesive according to the location and use. For instance, use special wood glues for edge gluing due to the end grain.

Lastly, gluing MDF sheets or boards need a strong glue that permeates the surface to give a powerful bond.

Sometimes, you also need to use a high glue amount since MDF is slightly porous.