Drywall Installation Services in Toronto

What is the correct way to install drywall?

The correct way to install drywall starts with proper planning, mapping out your layout to minimize waste, avoid butt joints where possible, and account for all electrical, plumbing, and HVAC penetrations before boards go up.

For walls, boards are typically hung vertically or horizontally, depending on wall height and structural requirements. Fasteners are driven at the correct intervals, typically every 8 inches along studs in the field, and every 12 inches at the edges. For ceilings, boards are installed perpendicular to the joists, usually in the longest run possible to reduce seam count.

After hanging, all seams, corners, and fastener dimples are treated with joint tape and multiple coats of compound, each coat slightly wider than the last. Once dry, the surface is sanded smooth and inspected before painting.

How many screws should you put in a 4x8 sheet of drywall?

For a standard 4x8 sheet of drywall on walls, you should use approximately 32 screws roughly 16 along each stud the panel spans, spaced every 8 inches in the field and every 12 inches at the edges.

For ceiling applications, fastening frequency increases due to gravity load, typically calling for screws every 7 inches. The exact count can vary slightly based on board thickness (½" vs 5/8"), whether it's a single or double-layer application, and local building code requirements.

What is the rule of thumb for drywall?

The most common rules of thumb professional drywall installers follow include:

• 1/8-inch gap rule: Always leave a 1/8-inch gap between boards and at floor level to allow for expansion and to prevent moisture wicking.

• Stagger your seams: Never align horizontal seams on adjacent boards. Offset them by at least one stud bay (16 inches) to prevent long continuous cracks.

• Ceiling first: Always drywall ceilings before walls. Wall boards then support the ceiling board edges, reducing fastener stress.

• Match board to application: Use moisture-resistant board in wet areas, fire-rated board where code requires it, and standard board everywhere else.

• Level 5 finish under critical lighting: In spaces with strong raking light or high-gloss paint, a Level 5 skim coat finish is the rule, not the exception.

What are common mistakes made during drywalling?

The most common drywall installation mistakes include: using the wrong board type for the application (especially ignoring moisture resistance in bathrooms and basements), over-driving or under-driving screws, creating too many butt joints due to poor layout planning, rushing mud coats without allowing proper drying time, failing to tape seams properly before mudding, and inadequate sanding before paint. Choosing professional drywall installers with a strong track record helps you avoid these costly errors entirely.

What is the difference between Level 3, 4, and 5 drywall finishes?

Drywall finishing is graded on a scale from Level 0 to Level 5:

• Level 3: All joints and fasteners coated, tape embedded, one finish coat. Suitable for heavy texture applications.

• Level 4: Additional finish coat applied—standard for most painted residential walls.

• Level 5: A full skim coat over the entire surface, creating a perfectly smooth, blemish-free wall. Required where flat or semi-gloss paint will be used, or where the wall will be viewed under strong light.

What type of drywall should I use in a basement?

For basement applications, moisture-resistant drywall (often called "green board" or "purple board") is recommended for areas prone to humidity. In spaces that require fire separation, such as attached garages or between units in a multiplex, 5/8-inch Type X fire-rated drywall is required by the Ontario Building Code. Our basement framing and drywall team can advise on the right board type for your specific basement project.

How long does drywall installation take?

Timeline varies significantly based on project size, complexity, and finish level. A single-room renovation may be done in a day or two, while a full basement or commercial buildout can take one to several weeks. Taping and mudding adds time, typically three coats with drying time between each, which can stretch over several days. We provide project-specific timelines with every quote.