Drywall Installation

Drywall Types

1) Regular Drywall comes in different lengths and thickness.
Lengths most commonly are 4' in width and 8' in length. These sheets are commonly used for basement it mostly fits through any basement stairwells.
If you have a walk out in the basement you should use 10' and 12' boards. Drywall is the standard wall covering panels.

2) Green Board is water resistant but it is too heavy to put on ceilings.

3) 5/8" fire rated Gypson Boards are used in residential and commercial installations. If finishing basement it is a good practice to use fire rated drywall on the ceiling. Its purpose is to slow down flames and stop from spreading to the 1st floor. Other uses are for garages, laundry room, storage rooms and basements.

4) Backer Boards Den Shields are water resistant used for around bathtubs and showers or wherever water is present. Good Backing for ceramic tile installation.

Applications:

Do you know why we use screws instead of nails?

Screws hold better than nails, which tend to pop out as the wood expands and contracts with humidity. When screwing on the drywall if you use a dimpler on your drywall screw gun will create a dimple, but it is very important not to break the paper because it will weaken the hold.

Upon installation and screwing, the screws should be set at 16" apart in every stud going from the center to the outside.

Around window and walkways or doorways cut out cavity with a roto - zipper or use a dry wall saw.
(Hint never has a joint at corners of openings as this will eventually crack, always put the joint at centre of openings, and screws around the opening).
If a window is present take of trims and measure and cut drywall to fit.

Always install drywall on the horizontal way and alternate joints. (Do not have cross tees as this makes it impossible to conceal when plastering).

When installing drywall always put manufactures finished edges butt together where possible.

Always leave a gap at the bottom of drywall where it meets floor. In basement leave a ½" gap above concrete floor. On outside corners apply a metal 90 degree angle outside corner bend and screw or nail in place. Make sure you measure and cut ½" above floor.

Plastering:

Use a six inch dry wall knife to cover screws enough to cover the dimple.
At corner beads use a stronger plaster such as sheet rock 45 one coat there is a minimum shrinkage with this product.

On seam apply joint compound with your 6" drywall knife.
Place drywall tape over the seam directly on joint compound using a continuous piece of tape. Push the tape into the compound every foot or so to hold it in place.
Start at centre to ends of wall using your 6" drywall knife holding the knife at a slight angle over the tape moving over the tape to embed it and remove any excess compound.

Inside Corners:

Fold a strip of drywall tape in half by pinching the strip and pulling it between thumb and forefinger. Apply wet compound on both walls at inside corner and apply folded tape and press gently, then using drywall knife scrape excess compound make sue it is grabbing on both side for better bonding to wall surface.
Let dry completely and apply a second coat of drywall mud.

For the third coat us a 12" knife and compound thinned out with water feathering all edges 2" beyond the second coat. (The compound should be about the consistency of mayonnaise)

After final coat has dried, smooth out any irregularities with a wet sponge. This works just as well as sanding without creating dust.

Tools Required:

Drywall, Drywall screws 1" 5/8", Joint compound, Drywall paper tape of fibreglass, 200 grit sandpaper, Saw horses, Drywall T square, Tape measure, Utility knife, Drywall saw, Screw gun or drill with a dimpler, Drywall router, Safety Glasses with side shields, Drywall mud pan or hawk, wet and dry vacuum.

Tips from Handiman4u:

Use screws instead of nails
Install the drywall horizontal
Leave a ½" gap between floor and drywall
Never force a panel into place
Use 3 different sizes of knifes 6" - 8" - 12"
Thin the joint compound with water for the third coat
Instead of sanding, smooth the final coat with a wet sponge.