Rain starts. Water runs down the same patch of siding again. From the lawn, the gutter looks fine.
Before you book another cleaning, watch where the water escapes. That detail helps separate a blockage from a leak or a drainage problem. Here is what Montreal and West Island homeowners can look for, what to photograph, and what to ask before agreeing to the work.
What causes gutters to overflow?
Leaves, a blocked outlet, poor slope and ice can interrupt gutter drainage. But water on the wall does not prove the trough is overflowing. It may be leaking behind the gutter or through a joint. Start with where the water appears, then have the cause checked before choosing cleaning or repair.
Start with what you can see
Use these clues to describe the problem. They are a starting point, not a diagnosis from the lawn.
| What you notice | What needs checking | Before agreeing to work |
|---|---|---|
| Water spills over the lip | Debris, the outlet and the downspout | Ask whether the whole drainage path will be checked. |
| Water runs behind the gutter | The roof edge, gutter position and the connection between them | Ask for an inspection before assuming cleaning will fix it. |
| Water drips at one seam | The joint and whether water is backing up nearby | Ask what is leaking and why. |
| The roof edge stays dry, but water pools below | The downspout exit and where the ground carries water | Ask where the discharge should go. |
A downspout that barely dribbles is a clue. It does not prove a clog. Rain intensity and the roof area feeding that pipe matter too. A photo of the spill and the outlet together is more useful than either one alone.
Follow the water, not just the leaves
Rain needs an open route from the roof to the gutter, through the outlet and downspout, then away from the home. A clean-looking section does not tell you what is happening farther along.
Leaves in the trough, or a blockage farther down?
Visible leaves are one place to start. The opening into the downspout and the pipe itself also need attention. Removing debris from the channel alone does not tell you whether the system drains.
CAA-Quebec's maintenance guide recommends clearing debris and checking water flow through the downspouts. When comparing quotes, ask whether both are included. Our eavestrough cleaning guide explains the scope in more detail.
Still overflowing after cleaning?
Tell the contractor exactly what returned: the same spill, in the same place, under similar rain. Ask what was cleared and how drainage was checked.
A visible dip or a section that holds water needs a closer look at slope and support. If a clear gutter still overflows in downpours, ask whether it can handle the runoff reaching it. The CMHC Homeowner's Manual describes several causes of overflow. Find out which one explains your home before paying for another cleanout.
Water behind the gutter?
Record that separately. Water travelling between the gutter and the house needs an inspection of how roof runoff enters the trough. Cleaning may be part of the work, but it should not be promised as the whole answer without checking the roof edge.
Water pooling at the bottom?
If the gutter carries water down successfully but the outlet releases it against the house, the problem continues at ground level.
The City of Montreal's guidance directs discharge onto a permeable surface at least 1.5 metres from the foundation. Check the guidance for your own municipality or borough before changing a connection. West Island homes do not all fall under the same rules.
Three photos that make the conversation easier
If you can observe from a sheltered, safe spot, capture:
- The wider view. Include the roof edge and downspout so the location is clear.
- The escape point. Show whether water crosses the lip, comes from behind, or drips at a seam.
- The ground below. Show the outlet and where the water collects or travels.
Add a short note: light rain or downpour, one spot or several, first occurrence or a repeat after cleaning. If the outlet is hidden or buried, say so rather than guessing about its flow.
Stay on the ground. You do not need to climb, lift a guard or take anything apart to prepare useful information. Skip the photos if the weather or access makes observation unsafe.
Cleaning or repair: what should the quote explain?
A useful quote connects the proposed work to the symptom you reported.
- For cleaning: what will be cleared, including outlets and downspouts, and how drainage will be checked.
- For a repair: the defect found, the proposed correction and whether anything else needs inspection.
- For a larger change: why cleaning or a minor repair would leave the problem unresolved.
Ask one final question: “What will you check before calling the job finished?” It gives you something concrete to compare when the work is done.
Flip et Bulles offers gutter cleaning and minor gutter repairs. Ask Stanley whether either fits what you are seeing. Roof-edge work, replacement and changes to underground drainage need their own assessment and should be quoted separately.
Before Montreal's freeze-up
Fall leaf drop is a useful prompt to check the drainage path. CAA-Quebec recommends seasonal cleaning in spring and fall. Ice can also affect gutters, so a cleanout should never be sold as a guarantee against winter overflow.
For the wider seasonal checklist, see our fall window and gutter preparation guide.
Questions homeowners ask
My gutters look clear. Can they still be blocked?
Yes. The view from the lawn cannot confirm the outlet or the inside of the downspout. Tell the contractor what you can see and ask for the connected path to be checked.
Do gutter guards rule out a blockage?
No. Guards still need checks and maintenance. Tell the cleaner which system you have so they can explain how they will inspect it. Our gutter guard maintenance guide covers what to watch for.
Does water beside the foundation mean damage has already happened?
Water beside the house does not prove damage has happened. Note where it collects and whether you see moisture inside. Persistent pooling or indoor water needs an assessment beyond a gutter-cleaning quote.
Show Stanley where the water goes
You do not need to identify the failed part before asking for help. Describe what happens, when it happens and whether the gutter has been cleaned recently.
Request a quote from Flip et Bulles. Include those details, and let Stanley know if you have photos. They give the conversation a clearer starting point: what needs checking, and what work makes sense for your home.