Sliding Patio Doors: Standard Sizes and Replacement Costs
Too Long; Didn't Read
- The Golden Rule: Stick to standard sizes (5ft, 6ft, 8ft) to save 50%.
- The Cost: Standard = ~$2,200. Custom = $5,000+.
- 5ft vs 6ft: 5ft saves space; 6ft gives more light and a wider passage.
- Rough Opening: The hole in your wall needs to be 1 inch wider than the door.
Answer First: In Toronto, standard sliding patio doors come in three widths: 5-foot (59 1/2"), 6-foot (71 1/2"), and 8-foot (95 1/2"). All are typically 79 1/2" high. A standard size costs $1,800–$2,800 installed. A custom size (e.g., 83 inches wide) jumps to $4,500+ because it requires custom tempered glass and vinyl extrusion.
A sliding patio door is a giant moving window you walk through. It involves heavy tempered safety glass and robust framing, making it expensive to manufacture.
The secret to a budget-friendly renovation is Standard Sizing.
The "Standard" Sizes Explained
Manufacturers mass-produce these sizes, keeping prices low.
1. The 5-Foot Door (The Condo Special)
- Actual Size: 59 1/2" W x 79 1/2" H
- Rough Opening Needed: 60" W x 80" H
- Pros: Perfect for small dining rooms or condos.
- Cons: Tight walking opening (22-24 inches). Hard to move furniture through.
2. The 6-Foot Door (The Suburban Standard)
- Actual Size: 71 1/2" W x 79 1/2" H
- Rough Opening Needed: 72" W x 80" H
- Pros: Most common size. Generous 30-inch opening, lots of light.
- Cons: Requires 6 feet of clear wall space.
3. The 8-Foot Door (The Estate)
- Actual Size: 95 1/2" W x 79 1/2" H
- Rough Opening Needed: 96" W x 80" H
- Pros: Massive glass area. Luxurious look.
- Cons: Heavy panel. Harder to slide.
Comparing Costs: Standard vs. Custom
Prices for a typical vinyl door with LoE glass (Installed):
| Door Type | Size | Price Range |
|---|---|---|
| Standard 6ft | 71 1/2" x 79 1/2" | $1,800 - $2,800 |
| Custom Cut | 74" x 82" (Example) | $4,500 - $6,000 |
| Why the jump? | Mass produced. | Manual layout, custom tempering, custom crate. |
The Hidden Cost of "Brick-to-Brick" If you have an odd-sized 1970s aluminum door, it is often cheaper to frame it in to fit a smaller 6-foot standard door than to order custom.
- Framing & Drywall cost: ~$500
- Custom Door upcharge: ~$2,000
- Savings: ~$1,500
How to Measure Your Rough Opening
Do not measure the door. Measure the Hole in the Studs.
- Remove interior trim to see the 2x4 studs.
- Measure Stud to Stud (Width).
- Measure Floor to Header (Height).
- Your Rough Opening should be 1/2 to 1 inch larger than the door size.
The Installix Verdict
If building an addition or cutting a new hole, always cut for a 6-foot standard door (72" x 80" opening). You save thousands and ensure future parts availability.