It is important to select the correct thickness of drywall for any type of residential or commercial construction, renovation or repair project. When you’re dealing with drywall companies in Calgary, comparing drywall contractors in Calgary, or planning a project with experienced Calgary drywall contractors, picking the right drywall thickness will make a big difference in the strength, durability, sound control and overall finish of your walls and ceilings.
Most interior walls are built using 1/2-inch drywall, though 5/8-inch drywall is commonly used for certain ceilings, fire-rated applications and when additional rigidity is required. Ultimately, the right choice depends on the location, the framing, the exposure to moisture and the needs of the project.
If your existing walls or ceilings are damaged, getting the right replacement material is just as critical. You might need professional drywall repairs in Calgary to replace damaged sections, match the thickness of existing drywall and properly finish the repaired area. If you are looking for drywall repair in Calgary or wall repair drywall services, being aware of the different thicknesses of drywall can help you make a more informed decision.
In this guide, we discuss the most common drywall thicknesses, where they are generally used, and how to choose the right one for walls, ceilings, basements, bathrooms, and drywall repair projects.
Common Drywall Thicknesses
There are many different thicknesses of drywall, but the most commonly used are 1/4-inch, 3/8-inch, 1/2-inch and 5/8-inch. Different thicknesses are for different purposes, and the right thickness depends on the location and needs of your project.
For most interior walls, 1/2-inch drywall offers a practical balance of strength, weight, cost, and ease of installation. Sometimes thinner drywall is used for certain repair or curved surface applications. 5/8 inch drywall is commonly used for ceilings, fire rated assemblies, and any applications that require extra rigidity .
What Thickness of Drywall Is Best for Walls?
For most standard interior walls, 1/2-inch drywall is the typical choice. It provides sufficient strength for many residential applications while remaining relatively lightweight and easy for installers to handle.
This thickness is commonly used throughout bedrooms, living rooms, hallways, home offices, dining rooms, and other interior spaces. It can also be appropriate for many basement walls when the surrounding construction and moisture conditions have been properly addressed.
In some situations, 5/8-inch drywall may be more appropriate. This thicker material provides greater rigidity and can be used as part of certain fire-rated or sound-control assemblies. The correct choice should always take the specific wall construction and applicable requirements into consideration.
When replacing existing drywall, it is also important to consider the thickness of the surrounding material. Using the wrong thickness can create uneven surfaces around doors, windows, electrical boxes, trim, and adjoining walls.
What Thickness of Drywall Should You Use for Ceilings?
Ceilings require additional consideration because drywall is installed horizontally overhead and needs to resist sagging over time.
5/8-inch drywall is commonly used for many ceiling applications because it provides greater rigidity than thinner drywall. It can be particularly useful where the framing configuration or spacing makes additional support desirable.
In some residential applications, 1/2-inch drywall may also be suitable depending on the framing, joist spacing, drywall product, and applicable construction requirements.
For larger rooms or ceilings with wider framing spans, selecting the appropriate drywall thickness becomes particularly important. Proper fastening and installation are also essential to maintaining a smooth and durable ceiling.
If an existing ceiling is sagging, cracked, or damaged, simply installing new drywall may not address the underlying problem. The framing, moisture conditions, fasteners and existing drywall should be evaluated before the repair or replacement begins.
Is 5/8-Inch Drywall Better Than 1/2-Inch Drywall?
5/8-inch drywall is not necessarily better for every application. The appropriate thickness depends on where the drywall will be installed and what the space requires.
The main advantage of 1/2-inch drywall is that it provides a good combination of strength, affordability, weight, and ease of installation. This makes it a practical option for many standard interior walls.
The main advantage of 5/8-inch drywall is its increased rigidity. It is commonly used where additional resistance to sagging is desired and is also frequently incorporated into fire-rated assemblies. It can also assist in improving the sound performance when it is part of a properly designed wall or ceiling system.
You shouldn’t be trying to use the thickest drywall you can find. Instead, materials should be chosen based on the needs of the specific room and construction system.
What Drywall Should You Use in Bathrooms and Moisture-Prone Areas?
Bathrooms, laundry rooms, kitchens and areas that are exposed to moisture should be given special consideration when selecting drywall.
Normal drywall is not made to be constantly exposed to moisture. Depending on where and how it will be used, you might want moisture-resistant drywall or a proper cement-based backer board.
This is especially important around showers and tubs, where regular exposure to water can cause traditional drywall to deteriorate. Using the right material will help prevent damage in the future.
Water exposure may have caused existing drywall to become soft, swollen, stained or deteriorated and may require removal and replacement. Likewise, you should also find the source of the moisture and fix it before hanging new drywall.
Water leaks, plumbing problems or other moisture problems can damage walls and ceilings, but professional Calgary drywall repairs can fix them.
What Drywall Thickness Is Best for Soundproofing?
Drywall thickness can help with sound control, but it’s not the only thing that determines how well a wall blocks noise.
The sound performance of a wall depends on the framing configuration, insulation, number of layers of drywall, separation of the wall surfaces, sealing of penetrations, doors, and windows, and the complete wall assembly.
For example, a simple switch from 1/2-inch drywall to 5/8-inch drywall may add some extra mass, but it may not provide the same benefit as a properly designed sound-control assembly.
If noise reduction is a concern for a bedroom, home office, basement, media room or multi-unit property, it’s worth discussing full wall construction with your drywall contractor before installation.
Can You Use Different Drywall Thicknesses in the Same House?
Yes you can use different thicknesses and different products of drywall in different areas of a house. It’s not necessary to use the same drywall on all the walls and ceilings in a property.
Interior walls are generally 1/2-inch drywall. Some ceilings are 5/8-inch drywall. Special drywall products may be needed for fire-rated assemblies, and moisture-resistant materials or other suitable wall-board products may be required in areas subject to moisture.
The secret is to employ the proper drywall for the proper application. Professional drywall contractors will be able to look at the construction and advise on the right material to install.
What Drywall Is Best for Basements?
Cellars require special attention. They are usually more moist and humid than rooms above ground.
The right drywall solution depends on the building construction, insulation, moisture conditions, and how the basement is used. Drywall installation should not begin until all existing moisture intrusion, foundation leaks, plumbing problems, and condensation or ventilation problems have been corrected.
If you put drywall over a moisture problem that is not fixed, you could end up with staining, deterioration, mold growth and expensive repairs later on.
If the existing basement drywall is damaged or deteriorated, it may be necessary to have professional drywall repair in Calgary before the space can be properly finished.
What About Drywall Repairs?
When repairing damaged drywall, thickness is only one part of the process. A proper drywall repair in Calgary should consider both the visible damage and the underlying cause whenever necessary.
Drywall is susceptible to damage from water leaks and plumbing problems, impact, cracks, nail pops, movement in the building, poor installation and exposure to moisture .
Small holes and small cracks can often be repaired without replacing an entire section of drywall. If the damage is more extensive, you may need to cut out the drywall and replace it.
In general, the replacement drywall should be the same thickness and type as the existing, if possible. Once the new material is up, you’ll need to tape and finish the joints with joint compound before sanding and painting.
The finishing is particularly important as a badly done repair can be seen even after the wall has been painted.
When Should You Repair or Replace Drywall?
Sometimes it is not necessary to replace the entire damaged section of drywall. Normally, small holes, minor cracks and localized damage can be repaired if the material surrounding it is good and there is no existing moisture problem.
If a large section of the drywall is damaged, the drywall is waterlogged, the material is soft or crumbling, or the deterioration is extensive, it may be best to replace the drywall.
If the drywall has been subjected to multiple mold or water damages, covering the damage with drywall will probably not be a good long-term fix. The root problem needs to be tackled and the affected material needs to be properly assessed.
For larger or more complex jobs, professional Calgary drywall repair is a more dependable choice and can help to ensure that the repaired surface will blend in with the existing wall or ceiling.
When Should You Hire a Drywall Professional?
Small drywall repairs can sometimes be a DIY project, but larger installations and repairs require proper preparation, installation and finishing.
If you are looking for professional drywall contractors in Calgary, they can be very helpful for new home construction, basement renovations, large wall or ceiling installations, considerable drywall damage, water damaged areas, commercial projects, or projects that need specialized drywall products.
There is much more to a professional installation than just hanging drywall on the framing. It has to be measured and cut correctly, then fastened, taped, finished, sanded, and prepared for painting.
Experienced Calgary drywall contractors can also help determine if you need 1/2-inch, 5/8-inch, moisture-resistant, fire-rated or other specialized drywall for the project.
How to Choose a Drywall Company in Calgary
When comparing drywall companies in Calgary, price should not be the only consideration. The contractor’s experience, workmanship, materials, and understanding of the project are also important.
A contractor who regularly handles small residential repairs may have a different area of expertise from a company specializing in new construction or large commercial projects.
Before hiring a contractor, discuss the scope of the project, the type of drywall being recommended, the expected installation process, the finishing requirements, the estimated timeline, and the total project cost.
It is also helpful to review examples of previous work and confirm that the contractor has experience with projects similar to yours.
Choosing the Right Drywall for Your Calgary Project
The right drywall thickness depends on where the drywall will be installed and what the space requires.
For many standard interior walls, 1/2-inch drywall is a practical choice. For certain ceilings, fire-rated assemblies, and applications requiring additional rigidity, 5/8-inch drywall may be more appropriate.
Moisture-prone areas may require specialized drywall products or alternative materials, while sound-control applications may require multiple layers or a specially designed wall assembly.
If you’re replacing damaged drywall, the existing material should also be considered. Matching the appropriate thickness and type can help create a smooth transition between the repair and the surrounding surface.
Whether you’re building a new home, finishing a basement, renovating an existing property, or repairing damaged walls, working with experienced Calgary drywall contractors can help ensure the appropriate materials are selected and installed correctly.
Final Thoughts
Choosing the right thickness of drywall is more than just getting the thickest drywall you can get. Choosing the right one depends on the location, framing, moisture exposure, fire-resistance requirements, sound-control goals and intended use of the area.
The average wall in a home will be 1/2″ drywall. 5/8 inch drywall might be better for some ceilings, fire rated applications, and in situations where extra rigidity is desired.
If you’re planning a drywall installation, basement renovation, or drywall repair in Calgary, choosing the correct material and installation method from the beginning can help prevent unnecessary repairs and provide a better long-term finish.
For larger projects or extensive damage, experienced drywall companies in Calgary can assess the condition of your walls or ceilings, recommend the appropriate materials, and complete the installation or repair with a professional finish.