Windows & doors
Sliding Door Cost Calculator
Prices a sliding door, where the track and rollers are what you are really buying.
Result
A planning estimate, not a quote. Access, the age of the equipment, what is found once it is opened up and local labour rates all move the real figure, sometimes a long way.
Get a Free Business AuditHow the calculation works
Time, crew, the unit and the call-out, with handling time reflecting a heavy glazed panel. The part of a slider that determines whether it is still pleasant to use in ten years is the roller and track quality, which is not visible in a price comparison. Cheap rollers in a soft track on a heavy panel wear quickly and the door becomes hard to move. Because a full replacement of a slider is a substantial job, this is a case where the better unit is genuinely the cheaper decision over the life of the installation, and it is worth saying so rather than quoting the lowest number.
What moves the number
- Roller and track quality, which decides service life and is invisible in a headline price.
- Panel weight, since heavier glass needs better rollers and more people to install.
- Whether the existing track can be reused, which is usually a false economy on a worn one.
- Security hardware, as a sliding panel needs a secondary lock or pin to be reasonably secure.
Where this one goes wrong
Sliders are the weak point on a house for security, because a panel can often be lifted or levered out of the track regardless of the latch. A secondary lock or an anti-lift pin is cheap and worth including rather than leaving as an upsell, particularly on a ground floor. On the repair side, the common request is replacing rollers on an existing door, which is worthwhile on a good frame and futile on a worn track, since new rollers in a damaged track wear out again quickly. Check the track before quoting a roller job. The glazing in a slider is required to be safety glass.
Before you quote
- Inspect the track for wear before quoting a roller replacement.
- Include a secondary lock or anti-lift measure on ground floor sliders.
- Confirm replacement glass is safety glazing.
Where the rules come from
Questions
About this calculator
Is it worth replacing just the rollers?
On a sound frame and an undamaged track, yes, and it is a fraction of a new door. On a worn or dented track it is not, because new rollers running in a damaged track fail again quickly. Inspecting the track is what tells you which situation you are in.
Are sliding doors a security risk?
They are the weaker opening on most houses, because a panel can often be levered or lifted from the track whatever the latch does. A secondary lock or an anti-lift pin addresses most of it cheaply and is worth fitting as standard on ground floor doors rather than offering as an extra.
Why is a better slider worth paying for?
Because you are largely buying the rollers and track, and those determine whether the door still slides easily in a decade. Replacing a slider is a substantial job, so a unit that stays serviceable is usually cheaper over its life than the one with the lowest purchase price.
The formula
total = hours x people x rate + parts + call-out, then sales tax
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How to use this calculator
- Hours on site (h). Enter your own figure; the page starts at 16 h.
- People needed. Enter your own figure; the page starts at 1.
- Labour rate charged ($). Enter your own figure; the page starts at $92.
- Parts and materials ($). Enter your own figure; the page starts at $4,200.
- Call-out or diagnostic fee ($). Enter your own figure; the page starts at $95.
- Sales tax (%). Leave at zero if you are quoting before tax.
The result updates as you type, so you can try a figure, see what it does to estimated total, and change it back. Nothing you enter is sent anywhere or saved.
A worked example
These are the figures the calculator opens with. Every number in the results column below is produced by the same calculation the page runs, so you can follow it through before putting your own figures in.
What goes in
| Input | Value |
|---|---|
| Hours on site | 16 h |
| People needed | 1 |
| Labour rate charged | $92 |
| Parts and materials | $4,200 |
| Call-out or diagnostic fee | $95 |
| Sales tax | 0% |
What comes out
| Result | Value |
|---|---|
| Estimated total main result | $5,767 |
| Labour | $1,472 |
| Before tax | $5,767 |
| Sales tax | $0 |
About $5,767: $1,472 of labour, $4,200 of parts and a $95 call-out.
How sensitive the answer is
Holding everything else steady and changing only labour rate charged, this is what happens to estimated total. It is worth knowing which of your inputs the answer actually hinges on, and which barely move it.
| Labour rate charged ($) | Estimated total |
|---|---|
| $46 | $5,031 |
| $69 | $5,399 |
| $92 example above | $5,767 |
| $138 | $6,503 |
| $184 | $7,239 |
Every other input is held at the example value while this one changes, which is not how a real job behaves. Treat it as a guide to which number matters most, not as five separate quotes.
What each figure means
- Hours on site (h)
- Measured in h, between 0 and 400, starting at 16 h.
- People needed
- A number, between 0 and 40, starting at 1.
- Labour rate charged ($)
- A money amount, starting at $92.
- Parts and materials ($)
- A money amount, starting at $4,200.
- Call-out or diagnostic fee ($)
- A money amount, starting at $95.
- Sales tax (%)
- Leave at zero if you are quoting before tax.
What the results tell you
| Result | What it is |
|---|---|
| Estimated total | The headline result. A money figure. |
| Labour | A money figure. |
| Before tax | A money figure. |
| Sales tax | A money figure. |
Estimating is the easy part
The jobs you never hear about cost more than the ones you mis-measure. BDEVY builds the marketing, systems and automation that bring them in.