My contractor said weeping tile and I said perimeter drain. Did we mean the same thing?

Almost certainly yes. Those two, plus drain tile, footing drain and foundation drain, are one thing — the perforated pipe at the base of your foundation. French drain is the only term on the list that regularly means something else.

Is a French drain in the yard a waste of money then?

Not at all, when the problem is surface water pooling somewhere it should not. It is only a waste when it is bought as a substitute for a footing drain that has failed, because it is not draining the place the water is getting in.

Why does my old drain have gaps in it?

By design. Butt-jointed clay tile was laid with deliberate gaps so groundwater could enter, with the top half of each joint covered to keep silt out. When people say an old drain has collapsed, what has usually happened is that the covering failed and the gaps filled.

Does it matter which word I use when I call for quotes?

Use perimeter drain here and everyone will know what you mean. What matters more is asking every company the same question about depth and about what the pipe carries, so their quotes describe the same job.

Are a perimeter drain, weeping tile, drain tile and a French drain all the same thing?

Four names, and why two of them are not the same thing

Direct answer · reviewed 2026-09-22

Three of them are. Perimeter drain, weeping tile and drain tile all mean the perforated pipe buried beside your footing, taking groundwater away before it reaches the wall — the Code calls it drainage tile or pipe, Ontario says weeping tile, and around here it is a perimeter drain. A French drain is where it gets expensive to be casual. That term is used for the same footing pipe and, just as often, for a gravel trench dug in a yard to catch surface water, which is a different system doing a different job. The BC Code keeps the two in separate subsections and the Appeal Board has held they must not be joined together. So when a quote says French drain, the question is not what it costs. It is which of the two you are being sold.

Conditions and exceptions

Nobody is being dishonest by using the loose terms — the trade genuinely uses them interchangeably, and so does most of the writing online.
A yard trench can be exactly the right fix for surface water. It is only the wrong fix when it is sold as a repair for a failed footing drain.
If you do not yet know which system is failing, no vocabulary helps. A camera does.

Drain problem assessment

Local evidence

Every figure below is quoted from the source shown or is our labelled estimate. Verified dates are the day we last checked the source; a figure whose check is overdue is withheld rather than shown.

Does a house have to have a foundation drain?: Yes — unless it can be shown to be unnecessary, the bottom of every exterior foundation wall must be drained, either by drainage tile or pipe around the outside of the foundation or by a layer of clean crushed rock; Applies to new construction and to work that replaces the drainage · A granular drainage layer is an accepted alternative to pipe; Province of British Columbia (BC Codes) · quoted · verified 2026-09-22
Pipe materials the Code accepts for foundation drainage: Clay drain tile (ASTM C 4), concrete drain tile (ASTM C 412M), perforated concrete pipe (ASTM C 444M), vitrified clay pipe (ASTM C 700), polyethylene flexible drainage pipe (BNQ 3624-115), plastic drain and sewer pipe (CAN/CSA-B182.1) or corrugated steel pipe (CSA G401); Province of British Columbia (BC Codes) · quoted · verified 2026-09-22
May roof or driveway water be put into the perimeter drain?: No — the Building Code Appeal Board has held that foundation perimeter drains are perforated subsoil drainage pipes which cannot form part of a storm drainage system, and that area drains must instead be connected to the storm sewer with approved solid pipe; The ruling concerned driveway area drains; the same reasoning is why roof water does not belong in the perforated pipe either · Older houses were often plumbed before this was settled, so an existing connection is common and is not evidence that it is correct; Building Code Appeal Board, Province of British Columbia · quoted · verified 2026-09-22
What older Greater Victoria houses have in the ground: A single 4-inch pipe, sometimes 3-inch; Clay tile and concrete pipe were laid in short lengths with open joints — the same joints that let water in let roots in; RainTek Drainage & Waterproofing (Victoria) · quoted · verified 2026-09-22
What a current installation looks like: Two pipes: a solid PVC pipe carrying roof and surface water, and a separate 4-inch perforated PVC pipe taking groundwater from beside the footing; Keeping roof water out of the perforated pipe is the point: a downspout tied into the foundation drain floods the thing that is supposed to keep the basement dry; RainTek Drainage & Waterproofing (Victoria) · quoted · verified 2026-09-22

The words, and where each one comes from

The reason there are so many names is that the thing is old and the regions that installed it named it separately. The Code itself uses the oldest wording. Yes — unless it can be shown to be unnecessary, the bottom of every exterior foundation wall must be drained, either by drainage tile or pipe around the outside of the foundation or by a layer of clean crushed rock

Drainage tile is literal: the original was short lengths of unglazed clay tile laid end to end. Weeping tile is the Canadian term for the same thing, from the water weeping in through the gaps. Perimeter drain is the Pacific Northwest name and is what you will hear from every contractor between here and Seattle. Footing drain and foundation drain are the inspector's terms.

What each term means when someone uses it
Term	Usually means	Where the word is from
Perimeter drain	The perforated pipe at the footing	BC and the Pacific Northwest
Weeping tile	The same pipe	Canadian, from the clay-tile era
Drain tile	The same pipe	The Code's own older wording
Footing or foundation drain	The same pipe	Building officials and inspectors
French drain	Either that pipe, or a gravel trench in the yard	Named after Henry French, a 19th-century American farmer

Where the Code stops treating them as one thing

This is the part that is missing from every other explanation of these words, and it is the part that decides whether a quote is right for your house.

Foundation drainage lives in one place in the Code — the requirement to drain the bottom of the foundation wall, the pipe materials, the depth below the slab, the stone over it. Surface drainage is a separate subsection entirely, covering site grading, window wells, catch basins for driveway runoff, and where downspouts go. Two systems, two sets of rules.

And they are not allowed to become one system. No — the Building Code Appeal Board has held that foundation perimeter drains are perforated subsoil drainage pipes which cannot form part of a storm drainage system, and that area drains must instead be connected to the storm sewer with approved solid pipe

So the yard-trench kind of French drain, which collects surface water, cannot legitimately be tied into the perforated pipe that is relieving groundwater at your footing. If it is, the trench you paid for is feeding water to the drain that is supposed to be protecting you.

What is actually under a Greater Victoria house

The Code accepts a long list of materials, and local houses are a museum of it. Clay drain tile (ASTM C 4), concrete drain tile (ASTM C 412M), perforated concrete pipe (ASTM C 444M), vitrified clay pipe (ASTM C 700), polyethylene flexible drainage pipe (BNQ 3624-115), plastic drain and sewer pipe (CAN/CSA-B182.1) or corrugated steel pipe (CSA G401)

In practice the age of the house tells you most of it. A single 4-inch pipe, sometimes 3-inch Those short clay lengths were laid deliberately with open joints, because open joints are how the water gets in. They are also how roots get in, which is why a mature Garry oak or a cedar hedge is so often the reason a fifty-year-old system stops working.

A current installation looks different. Two pipes: a solid PVC pipe carrying roof and surface water, and a separate 4-inch perforated PVC pipe taking groundwater from beside the footing If your house has two pipes, someone has already done the separation described above. If it has one, it is worth finding out what that one pipe is being asked to do.

Why the vocabulary is worth money

Two quotes can both say French drain and be for work that differs by an order of magnitude — a trench along a wet side of the garden, or a full excavation to the footing around the house. Neither contractor is lying. They are using the same word for the two systems the Code separates.

There is one question that resolves it, and it does not require knowing any of the terms above: does this work go down to the footing, or not? Everything else follows from the answer.

Ask whether the work reaches the footing, and how deep that is on your house.
Ask whether the new pipe is perforated, solid, or both, and what each one carries.
Ask what happens to the existing pipe — replaced, left in place, or connected to.
If surface water is part of the problem, ask for it to be quoted as its own line rather than folded in.

Questions homeowners ask

My contractor said weeping tile and I said perimeter drain. Did we mean the same thing?: Almost certainly yes. Those two, plus drain tile, footing drain and foundation drain, are one thing — the perforated pipe at the base of your foundation. French drain is the only term on the list that regularly means something else.
Is a French drain in the yard a waste of money then?: Not at all, when the problem is surface water pooling somewhere it should not. It is only a waste when it is bought as a substitute for a footing drain that has failed, because it is not draining the place the water is getting in.
Why does my old drain have gaps in it?: By design. Butt-jointed clay tile was laid with deliberate gaps so groundwater could enter, with the top half of each joint covered to keep silt out. When people say an old drain has collapsed, what has usually happened is that the covering failed and the gaps filled.
Does it matter which word I use when I call for quotes?: Use perimeter drain here and everyone will know what you mean. What matters more is asking every company the same question about depth and about what the pipe carries, so their quotes describe the same job.

Your next step

The names stop mattering once you know whether the water is arriving at the footing or on the surface.

Find out which system is actually failing

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Sources

British Columbia Building Code 2018, Division B, Section 9.14 — Drainage — Province of British Columbia (BC Codes), accessed 2026-09-22
BCAB #1226 — Area drains (18 December 1990) — Building Code Appeal Board, Province of British Columbia, accessed 2026-09-22
Common drainage questions — RainTek Drainage & Waterproofing (Victoria), accessed 2026-09-22

Code and municipal requirements are quoted from the sources above; price ranges are what named local companies publish, and the companies that publish them sell the work. Nothing here is a diagnosis of a particular house: only a camera in your own drain can tell you what is wrong with it. Report a correction.