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Sizing, slope and code, dimensionedAll tools free

Fixtures and repairs

2 tools · 4 guides · 2 comparisons · 8 pages

Water heaters, drains, valves and the rough-in dimensions behind the finished wall.

Service
Isometric illustration of a lavatory rough-in with a P-trap and stop valves
Service and rough-in work: sizing a heater, clearing a line, setting a valve at the right height.

Calculators

Water heater sizing calculatorService

Peak-hour demand into a gallon size, or a tankless GPM at your rise.

FHR · GPM

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Leak cost calculatorService

Drip rate into gallons a year and dollars at your own water rate.

gal/yr · USD

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Guides

Frozen pipes: what to doFreeze mechanics, the thaw sequence, and prevention by climate zone.9 minHow to unclog a drainBy fixture, in escalation order, and when to stop and cable it.9 minShower valve replacementCartridge versus full valve, access panel versus tile cut, anti-scald code.10 minPlumbing rough-in dimensionsHeight and offset per fixture, with an elevation you can work from.9 min

Comparisons

P-trap vs S-trapSiphonage, code status and the retrofit path when you find one.compareCopper vs CPVC vs PEX for a repipeMaterial, labour, lifespan and what insurers say about each.compare

Keep the code book handy.

Every table on this site is dimensioned, sourced and dated. Bookmark the calculator you use most and it will be there on the next callout.

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