Liquid Nails Subfloor vs. Heavy Duty: What’s The Difference?

In my experience, if you need brute strength for indoor jobs like securing subflooring, Heavy Duty is The Terminator. But if you’re working outdoors in all kinds of weather, Subfloor is your trusty sidekick. And with those low VOCs, it should keep the BAAQMD off your back.

Liquid Nails Subfloor vs. Heavy Duty
But the real nail-biter is in VOC emissions. With the Bay Area’s strict regulations, this is an important consideration. The Subfloor squeaks by with <7% VOCs by weight.

Liquid Nails Subfloor vs. Heavy Duty: Specs & Uses

When it comes to bonding in cold weather, the Subfloor is the clear winner. This stuff glues wood together with a death grip even when it’s freezing outside

SubfloorHeavy Duty
Datasheet📥Liquid Nails Subfloor📥Liquid Nails Heavy Duty
DescriptionConstruction adhesive for subfloor and deck applications, bonds wet and frozen lumberGeneral purpose construction adhesive, offers extreme strength and durability
Key SubstratesLumber, plywood, OSB, particleboard, waferboardTimber, MDF, plasterboard, plastic, masonry, concrete, metals
Application Temperature Range22°F to 120°F (-6°C to 49°C)Not specified
Sag ResistanceNon-sagNo drip, sag or stringing
Gap Filling AbilityBridges gaps up to 3/8″ (1 cm)Bridges gaps up to 9mm
Initial Shear Strength350 psi (24 hrs)Exceeds 200 kPa (24 hrs)
Long Term Shear Strength500 psi (7 days)Exceeds 2 MPa
FlexibilityNot specifiedFlexible
Water ResistanceNot specifiedWater and weather resistant
VOC Content<7% by weightNot specified
Skin Time15 minutes10-15 minutes
Minimum Cure Time24 hours8 hours*
ApprovalsMeets APA and ASTM specsMeets AS2329 specs

My Hands-on Test: Liquid Nails Subfloor

Liquid Nails Subfloor
During my recent home project, I had the opportunity to construct a set of stairs using timbers. To ensure the sturdiness of the stairs, I decided to use solid hickory treads. For the installation, I relied on the exceptional performance of Liquid Nail Subfloor adhesive.


The first thing that impressed me was how effortlessly the adhesive flowed during application. It made the process so much smoother and faster. Unlike other adhesives I’ve used in the past, the set time for Liquid Nail was remarkably quick. I didn’t have to wait around for ages for it to dry. This allowed me to proceed with the construction without any unnecessary delays.


But the true testament to the effectiveness of this adhesive lies in the results. The hickory treads are securely bonded to the stair structureemoticon - wood staircases , and not a single squeak can be heard when I walk up or down the stairs. The strength and durability provided by Liquid Nail Subfloor adhesive are unparalleled. It has become my go-to construction adhesive for any project that requires a reliable and long-lasting bond.

Holds the Paneling in Place

In addition to using Liquid Nail for my stairs, I also employed it for other tasks around the house. We recently remodeled our accent wall and found that LN-602 was perfect for holding the paneling in place. Even in chilly 30-degree weather, the adhesive’s gunning ability remained unaffected, and it bonded well in cold conditions. Whether indoors or outdoors, Liquid Nail proved to be versatile and dependable. The absence of drips and messiness further added to its appeal.


Not so good as for wood to wood.

Liquid Nails Subfloor

CTA:list all comments

2 reviews

  • I lost the adhesive pads on my truck's step. I was thinking of using screws and applying liquid nail in the middle for attachment. Would that be effective?

    • That might not be the best solution for your situation. I would suggest using contact cement instead. Apply it to both the steps and the back of the pads. Allow it to dry completely. Make sure to align them properly when joining because you won't have a second chance. You can skip using screws in this case.

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My Hands-on Test: Liquid Nails Heavy Duty

Liquid Nails Heavy Duty Adhesive
When I’m putting up new crown molding or anything that’s polyurethane, this is my go-to adhesive. It adheres great and creates a strong bond.

✅Pros: Heavy Duty

Liquid Nails worked well for various tasks, such as gluing down road bumps and working on fence and garden projects. It provided a strong adhesion for these smaller-scale applications.

repairing squeaky floors with Liquid nails
repairing squeaky floors with Liquid nails


The versatility of Liquid Nails impressed me. It performed admirably on various surfaces, including woodemoticon - clamp, plastics, and even a dress belt repair. I used it to connect a metal head to the damaged leather portion, and it held up well. The adhesive arrived in a well-packaged bag, ready to use.


Moving on to the performance, I have to admit that Liquid Nails did deliver satisfactory results in certain situations. For instance, I used it to secure a cluster of one-inch ceramic tiles ceramic tilesthat had come off my bathroom floor. I was pleased to find that the adhesive worked effectively, and even after a month, all the tiles remained firmly secured. The product was easy to use, dried relatively quickly (without requiring excessive dry time), and had a more tolerable smell compared to other abrasive adhesives I’ve encountered.

❌Cons: Heavy Duty

The only thing to keep in mind is that it takes a bit longer to cure in humid conditions.

One minor suggestion for improvement would be to have a screw-off tip for easier access to the adhesive.

Liquid Nails Heavy Duty Adhesive

FAQ: Heavy Duty

Q: Can I use this adhesive to attach royal building products 1.25-in x 8-ft finished vinyl wall panel moulding to painted drywall?

A: It’s possible, but when working with vinyl, you should roughen the surface first so that the liquid nails have something to adhere to.

Q: If I need to remove it later, will it damage the wall?

A: This adhesive forms a strong bond, so removing the material after it has set is likely to cause damage.

Q: Can I apply spackle over this adhesive?

A: I have used spackle to fill in after the adhesive has fully cured. It may sink a bit, so I’m considering applying another coat on top. Perhaps it will even out.

Q: One of my vinyl sidings has popped out and can’t be snapped back into the groove. Will this adhesive work, and will I have time to position the piece before it sets?

A: Make sure the edge of the vinyl siding is positioned below the groove it slides into. If you haven’t done that, it should work. You will have enough time to position the piece before the adhesive dries if you hold it in place.

Q: Is this adhesive safe for pets? I want to use it to wrap new Sisal rope on a scratching post.

A: This adhesive is harmful if swallowed and can cause irritation to the respiratory tract, eyes, and skin. It contains materials that may cause organ damage and pose a cancer hazard. Considering the safety of your pet, I would advise against using it.

Q: Can this adhesive be used to glue 1/64″ lead sheeting to a metal door?

A: Yes, the Heavy Duty Construction Adhesive can be used to glue lead sheeting to a metal door. However, it is not recommended for flooring applications, ceramics, mirrors, granite, marble, plastic, or vinyl.

Q: Can this adhesive bond EPDM to EPDM?

A: I would not recommend using it for that purpose. There are better rubber adhesives available. You can try Flex SealFlexb Seal Liquid. Many customers have successfully used Flex Seal Liquid for various applications, including EPDM rubber roofs.

Q: I have a loose screw in my standing desk. Can I use this adhesive with toothpicks inserted in the hole to secure a weight-bearing screw?

A: Yes, that should work. Allow the adhesive to dry completely for 24 hours.

Q: Is this adhesive transparent?

A: No, it is not.

Q: I’m installing a tub surround, but I can’t find LN715 adhesive. Are there other liquid nails products I can use? It needs to be compatible with ABS plastic.

A: I have had great success with Loctite Power Grab Ultimate, which even worked on glass despite not being intended for that. You might also try 3M Super 90 Spray Adhesive (3m 90 spray adhesive directions) if the tub surround has an ABS plastic backing. Spray it on both the sheets of ABS and the wall surface for better adhesion.

Q: Can I use this adhesive to bond travertine tile to concrete on my patio? I’m concerned about the heat in Arizona.

A: It’s best to follow the recommended method for bonding travertine tile to concrete, which does not involve using adhesives.

Q: How long do I need to brace items before the adhesive sets?

A: Thank you for your question. The adhesive requires a minimum of 24 hours to fully cure and reach its maximum strength.

Q: Can I use this adhesive to attach a 1/8″ metal to wood?

A: Yes, you can, but I would advise roughening up the surface of the metal beforehand. Also, keep in mind that 1/8″ steel is quite heavy, so ensure you use an adequate amount of adhesive like devcon plastic steel epoxyDevcon Plastic Steel Putty.

Q: Will this adhesive work for applying PVC panels to glazed porcelain tile?

A: Absolutely! This adhesive is suitable for that purpose.

Q: I need to fill a small gash in t11 paneling. Can this adhesive be painted over?

A: Once fully cured (after 24 hours at room temperature), LN-903 adhesive can be painted over.

Q: Will this adhesive bond foam to aluminum? How many square feet does a 10oz tube cover?

A: Yes, it will bond foam to aluminum.

Q: Can I use this adhesive to bond metal to concrete for an outdoor concrete fence repair?

A: Honestly, I don’t think it would be suitable for outdoor use. You should consider using Gorilla Glue, which is more appropriate for outdoor applications.

Q: Will this adhesive damage EPDM material?

A: Unfortunately, this adhesive is not compatible with EPDM material and will not adhere to it.