You’re walking down your hallway at 6 a.m., and crack! That creaking sound that wakes up the whole house… It’s one of the most common problems in homes on the South Shore, especially those that are a few years old. A creaking floor can quickly become annoying, and many homeowners mistakenly think they have to rip everything up to fix the problem.
Good news: in most cases, solutions for creaking hardwood floors are much simpler than that. Whether you live in Brossard, Longueuil, or Saint-Lambert, there’s a good chance your floor can be saved without major work. Here are 7 solutions—ranging from simple DIY fixes to professional interventions—to restore peace and serenity to your home.
At L’Artisan Espace Design, we handle many wood floor renovation projects on the South Shore. Before recommending a complete replacement, we always start by identifying the true cause of the problem. Because, yes, it makes a big difference to know whether the creaking is coming from the floor itself, the subfloor, or the joists.
Why does a wood floor creak?
Before looking for a solution, you need to understand the cause. A wooden floor usually creaks for one of the following reasons:
- Wood rubbing against a nail that has come slightly loose
- ;
- two planks rubbing against each other due to the movement of the wood
- ; a joist rubbing against the subfloor
- ; or aplywood subfloor that has partially
- delaminated
- Excess moisture or dryness that has caused the wood
- to expand or contract
- A plank that has warped slightly and is touching the adjacent
- plank
On the South Shore, seasonal humidity variations are significant. In the summer, the air is hot and humid, so the wood absorbs moisture and swells. In the winter, heating makes the air very dry, causing the wood to shrink. This annual cycle puts a lot of strain on the floor, and that’s often when the creaking starts.
Solution 1: Graphite powder or talcum
powder
This is the simplest and often the most effective solution for minor creaking. If you can identify the boards that are creaking, sprinkle graphite powder or talcum powder (baby powder) into the gaps between the boards.
The lubricant seeps between the planks and reduces the friction that causes the creaking. Walk on the floorboards to work the powder in, then wipe away the excess with a slightly damp cloth. This is a temporary solution, but it can last for several months or even years for minor creaking.
Cost: less than $10 for a box of graphite. Difficulty: very easy. Effectiveness: good for mild creaking caused by friction between floorboards.
Solution 2: Screw from below (when the basement is accessible)
If you have access to the subfloor from the basement, this is often the most effective solution. The idea is simple: while one person walks on the creaking area on the ground floor, another pinpoints the exact location of the problem from the basement.
Once the problem is located, drive a short wood screw (about 3 cm) through the subfloor and into the hardwood floor. The screw pulls the floor down and eliminates the play that is causing the creaking. Be careful not to use a screw that’s too long, as it would go through the wood floor and be visible on the finished surface.
Cost: a few dollars for screws. Difficulty: moderate (requires being comfortable working in a confined space). Effectiveness: excellent if the problem stems from the floorboards coming loose from the subfloor.
Solution 3: Screw from Above (Discreet Method)
When access from below isn’t possible, you can screw from above. This technique requires a bit more care to remain discreet.
Locate the nearest joist (use a joist finder or tap gently to find the solid sound). Drill a pilot hole slightly smaller than the diameter of your screw, then drive a wood screw all the way into the joist. Sink the screw head slightly below the surface, then fill the hole with a wood plug of the same color or with tinted wood filler. With a little care, the repair will be virtually invisible.
Cost: $20 to $50 depending on the finishing materials. Difficulty: moderate. Effectiveness: Very good if the creaking is caused by a board that isn’t properly secured to the joist.
Solution 4: Injecting Glue into the Joints
For creaking caused by friction between two adjacent boards, injecting wood glue can be a lasting solution. Use a syringe or a fine needle to inject PVA wood glue into the joint between the creaking boards.
First
,
vacuum the joint to remove dust and debris. Inject the glue, then place a weight on the boards for 24 hours to hold them in place while the glue dries. Wipe away any excess glue with a damp cloth before it dries.
Cost: $10 to $20. Difficulty: easy. Effectiveness: good for gaps between planks, but the glue may crack again due to seasonal movement of the wood.
Solution 5: Sanding and Refinishing the Floor
If there are numerous cracks accompanied by other signs of wear (warped planks, a dull or peeling finish, significant gaps between planks), it may be time to consider a complete sanding followed by refinishing.
Sanding helps level slightly warped planks, eliminate minor surface irregularities, and prepare the wood for a new coat of varnish or oil. This is often when professionals also inject glue into problematic joints and reattach loose planks.
On the South Shore, our sanding service at L’Artisan Espace Design includes a thorough inspection of the floor before work begins. We identify all problem areas and address them before sanding begins, ensuring a flawless and long-lasting result.
Solution 6: Control the Humidity in Your Home
If creaking occurs mainly in the winter, it’s likely due to dry indoor air. Quebec’s heating systems significantly dry out the air, and the wood reacts by contracting, creating gaps between the boards and causing friction.
The long-term solution is to maintain a relative humidity level between 40% and 55% in your home. An ultrasonic or evaporative humidifier can make a big difference. On the South Shore, many homeowners install a central humidifier integrated into their heating system, which is the most effective and discreet solution.
A digital hygrometer ($20 to $50 at any hardware store) will allow you to monitor the humidity level and adjust the humidifier accordingly. This preventive measure can eliminate seasonal creaking without any mechanical intervention on the floor.
Solution 7: Partial Replacement of Damaged
Boards
When one or a few boards are clearly damaged, permanently warped, or have significant cracks, targeted replacement is sometimes the best option. This is a “surgical” procedure that corrects localized problems without affecting the rest of the floor.
For nailed boards (traditional nailed flooring), replacement requires skill: you must carefully cut the problematic boards, remove the sections without damaging the adjacent boards, and then install and finish the new boards so that they blend in visually with the rest.
This is a delicate job that often requires the help of a professional, especially if you want the repair to be virtually invisible. Our team at L’Artisan Espace Design can assess your situation and recommend the most appropriate and cost-effective solution.
L’Artisan Espace Design on the South Shore: Repair or Replace Your Floor
When a homeowner in Brossard, Longueuil, or La Prairie calls us about a creaking floor, our first step is always a diagnosis. That’s because the best solution depends on the cause, the overall condition of the floor, and your budget.
At AED, we’re honest with you: if your floor can be saved with sanding and a few targeted repairs, we’ll tell you. And if replacement is truly the best long-term option, we’ll explain that clearly, too. Our goal is to help you make the best decision for your home and your budget.
Our showroom in Brossard is open to welcome you and show you all the available options, whether it’s refinishing, a partial repair, or a completely new floor. Free, no-obligation estimate.
FAQ — Creaking Floors: Solutions for the South
Shore
1. Is a creaking floor structurally dangerous?
In most cases, no. Creaking is rarely a sign of a serious structural problem. However, if the creaking is accompanied by loose boards, significant unevenness, or if you feel excessive flex in the floor, this may be a sign of a problem with the joists. In this case, a professional must inspect the structure before any renovation work begins.
2. Why does my floor creak mostly at night or in the morning?
This is often due to temperature fluctuations. At night, the temperature drops and the wood contracts slightly, creating friction. In the morning, as the temperature rises, the wood expands. These repeated movements create creaking sounds that are often more audible at night due to the quiet surroundings. Better management of indoor humidity can help mitigate this phenomenon.
3. Does a creaking floor mean the wood is dry?
Yes and no. Wood that is too dry (moisture content below 6–8%) can contract and cause creaking and cracks. But wood that is too damp can also cause creaking due to swelling and friction. The ideal is to maintain the wood at a stable moisture content, which is possible by keeping the relative humidity in your home between 40 and 55%.
4. Does graphite powder damage the floor?
No, graphite powder is a neutral dry lubricant that does not react with wood. It leaves no visible residue after application and cleaning. It is a safe solution for all types of wood floors, whether varnished or oiled. Avoid oil- or silicone-based lubricants, which can leave stains.
5. Can SPC vinyl be installed over a creaking floor to mask the noise?
Installing a floating floor over a creaking floor generally does not eliminate the creaking, since the noise comes from movement in the subfloor or joists. In some cases, a thick acoustic membrane can dampen the noise, but it’s best to fix the problem at the source before installing new flooring.
6. How much does a floor sanding service cost to eliminate creaking on the South Shore?
Floor sanding often includes repairs to joints and problematic boards. In 2026, the cost typically ranges from $3 to $6 per square foot (all-inclusive: sanding, repairs, and application of two coats of finish) on the South Shore. For a standard home with 1,200 square feet of hardwood flooring, expect to pay between $3,600 and $7,200 in total.
7. My floor creaks only when it’s cold. Why?
This is a common occurrence on the South Shore. During cold spells, heating significantly lowers indoor humidity levels (often below 30% in winter). The wood contracts, creating gaps between the planks and increased friction when walked on. Installing a humidifier and maintaining a humidity level of 40–50% should significantly reduce these winter creaks.
8. When is it better to completely replace the floor rather than repair it?
Replacement is warranted when: (1) more than 30–40% of the surface has issues, (2) the wood is too thin to be sanded again (less than 3 mm of remaining thickness), (3) there is water damage or mold over a large area, or (4) the floor has already been sanded several times and can no longer be sanded. In these cases, investing in a new floor is more cost-effective in the long run.
9. Can creaking get worse over time?
Yes, if left unaddressed. A nail that has loosened slightly will continue to move and may eventually come out completely, causing a board to lift. A small crack in a board can widen. It’s always best to address the issue early, before it worsens and becomes more expensive to fix.
10. Can you perform a DIY repair on a hardwood floor?
Yes, for simple solutions such as using graphite, screwing from below, or controlling humidity. For more complex repairs (replacing planks, injecting adhesive, sanding), it’s generally best to call in a professional. Improper repair work can further damage the floor or result in an unsightly finish that’s difficult to correct.
11. Does scraping or sanding screw heads cause finishing issues?
If the screw heads are properly countersunk below the surface and filled with a wood plug or wood filler of the correct color, the finish should not be a problem. Make sure the filler is completely dry and sanded flush with the surface before applying varnish or oil. A professional will know how to mix and tint the filler for a virtually invisible result.
12. Are there specific commercial products for repairing creaking floors?
Yes, several manufacturers offer repair kits for creaking floors. These products typically contain an adhesive or lubricant specially formulated for wood floors. Results vary depending on the cause of the creaking. For mild to moderate creaking, these products can be effective. For more serious problems, professional intervention remains the best option.
Is
your floor creaking and you don’t know where to start? Our team at L’Artisan Espace Design can help you diagnose and fix the problem. Contact us for a free assessment on the South Shore.
Do you have a flooring project on the South Shore? Request a free estimate from the team at L’Artisan Espace Design.
