Patio, Sliding, and French Door Costs Compared
The ranges
Sliding glass doors run about $600 to $5,000 installed depending on size and panels. Exterior French doors run $1,300 to $5,500. Recent data puts basic patio-door installs around $1,017 to $1,551 and French-door installs around $1,712 to $2,617 per door.
Sliding vs French
Sliding (gliding) doors save space and cost less, ideal for tight patios. French doors swing open for a wider, more traditional opening but cost more and need clearance. Multi-panel and folding 'moving glass walls' are the premium tier.
Glass matters
Because these doors are mostly glass, a Low-E insulated package is essential to control heat gain and keep the room comfortable.