The client on this Mississauga house had not cleaned the leaf guards for about 20 years. On the roof our crew found moss sitting on top of the guards and a trough underneath packed with sediment and moss. In the crew's words, it was about time for a cleaning.
Gutter guard cleaning in Mississauga after about 20 years
Quick answer: In September 2026 DT Cleaning cleaned the gutter system under the leaf guards on a Mississauga house for $450. The client had not cleaned the perforated metal guards for about 20 years, so, in our crew's words, it was about time. The $450 covered the gutters under the guards only; the roof was not cleaned.
What was under the gutter guards on this Mississauga house
Quick answer: With the guards lifted, the trough under them was packed with dark sediment, pine needles and green moss. In 1 spot a seedling had rooted in the sediment. Moss also sat in clumps, with pine needles, on top of the guards along the eave. The photos show the gutters as the crew found them; none shows the finished gutters.
Can moss grow through gutter guards?
Quick answer: Yes, on this house. Our crew says the moss had grown into the leaf guards and right through the whole gutter system, which is what made this Mississauga cleaning so hard. Moss also sat in clumps on top of the guards, and at 1 roof edge it had grown into a thick mat over the gutter.
"This moss had grown right through the whole gutter system, and that made the gutter system very hard to clean, because the moss had grown into the leaf guards, and we had to clean it with a brush, then wash it all, collect the debris from the gutter system, and then put the leaf guards back."
DT Cleaning crew, Mississauga, September 2026 (translated from the crew's voice note)
How we cleaned under the gutter guards
Quick answer: Our crew described 4 steps for this Mississauga house, in this order: clean with a brush, wash it all, collect the debris from the gutter system, then put the leaf guards back in place. The job photos show the guards lifted off the trough. The $450 covered this work on the gutters under the guards, and nothing on the roof.
- Brush. The moss had grown into the leaf guards, so the crew cleaned with a brush.
- Wash. The gutter system was washed out.
- Collect the debris. The debris was collected from the gutter system.
- Guards back. The leaf guards went back in place.
What gutter guard cleaning cost on this Mississauga job
Quick answer: $450 in September 2026, for cleaning the gutter system under the leaf guards: brushing, washing the gutter system out, collecting the debris and putting the guards back. The roof cleaning our crew proposed is not part of that figure and is not priced here. The gutter length and the number of storeys were not recorded for this job.
| Work | Scope | Price |
|---|---|---|
| Gutter guard cleaning | Gutters under the leaf guards: cleaned with a brush, gutter system washed out, debris collected, guards put back | $450 |
| Roof moss cleaning | Proposed only, not done: remove the moss, then apply a chemical treatment to the whole roof aimed at the moss spores | Not part of the $450; not priced here |
| Job record | Detail |
|---|---|
| Place | Mississauga, Ontario (neighbourhood not recorded) |
| Month | September 2026 |
| Time without cleaning | The client had not cleaned the leaf guards for about 20 years |
| Guards | Perforated metal leaf guards, put back after cleaning |
| Gutter length | Not recorded |
| Storeys | Not recorded |
This is one documented job, not a rate card. More guarded jobs, and what we found under each one, are in our gutter guard cleaning case studies from Toronto. Eavestrough cleaning prices by house type are on our eavestrough cleaning cost page.
Why this Mississauga roof grows so much moss
Quick answer: Trees. Our crew's diagnosis is that there are too many trees around this Mississauga house, so the roof does not dry out, and moss has built up on it. The photos show moss along the shingle rows and at the gutter edge, with trees right beside the roof. A roof cleaning was proposed as a separate job from the $450 gutter work.
Oregon State University Extension puts it plainly: "Moss is a shade-loving plant that does not thrive in sunny conditions."
The roof moss cleaning our crew proposed
Quick answer: A separate job from the $450 gutter guard cleaning: remove the moss first, then apply a chemical treatment to the whole roof aimed at the moss spores. Our crew says this client's roof definitely needs cleaning, because under the trees it does not dry out. The roof was not cleaned on this visit, so this page shows no result.
Oregon State University Extension's guidance runs in the same order: "After the moss has been removed, apply a commercial product." See also our roof moss removal case study from North York, where the moss was treated in place without being removed first, and our roof cleaning service.
How often should gutter guards be cleaned?
Quick answer: Well before 20 years. On this Mississauga house, after about 20 years without a cleaning, moss had grown through the gutter system and into the guards. Our general advice is to have a panel lifted and the trough checked every 2 to 3 years, and every 18 months under mature trees or on a roof more than 10 years old.
The City of Mississauga tells homeowners: "Keep eavestroughs, downspouts and ditches or storm drains on your property clear of leaves and other debris."
Gutter guard cleaning across Mississauga and the GTA
Quick answer: DT Cleaning cleans gutters, with and without leaf guards, in Mississauga and across the GTA from 7 Inverleigh Dr in Etobicoke. The company has 500+ five-star Google reviews, $2M CGL insurance and WSIB, and is Working at Heights certified. The one job on this page was $450 in September 2026; it is not a rate for other houses.
For a quote on your house, see our gutter cleaning in Mississauga page and our Mississauga service area page. We work in these areas:
Our crews are Working at Heights certified. Ontario's working at heights training page explains that workers on construction projects who use fall protection devices must take the training, and CCOHS notes in its portable ladder safety information that falls from portable ladders are a major source of serious injury.
Gutter guard cleaning in Mississauga: common questions
Do gutter guards need to be cleaned?
Yes. The client on this Mississauga house had not cleaned the leaf guards for about 20 years, and our crew found moss grown through the gutter system and into the guards.
How often should gutter guards be cleaned?
Our general advice is to have a panel lifted and the trough checked every 2 to 3 years, and every 18 months under mature trees or on a roof over 10 years old. This Mississauga house went about 20 years.
Can moss grow through gutter guards?
Yes. On this Mississauga house our crew says the moss had grown through the whole gutter system and into the leaf guards.
How do you clean gutters that have leaf guards?
On this job, in the order our crew described: clean with a brush, wash it all, collect the debris from the gutter system, then put the leaf guards back in place.
Why was this gutter system so hard to clean?
Our crew says the moss had grown right through the whole gutter system and into the leaf guards, which made the gutters very hard to clean.
How much does gutter guard cleaning cost in Mississauga?
On this Mississauga house it was $450 in September 2026, for the gutters under the leaf guards only. Gutter length and storeys were not recorded, so it is one documented job, not a rate.
Is roof moss removal included in gutter guard cleaning?
No. On this job the $450 covered the gutters under the guards. The roof moss cleaning was proposed separately.
Why does my roof have so much moss?
On this Mississauga house our crew put it down to trees: there are too many of them, so the roof does not dry out.
How do you get rid of moss on a roof?
For this Mississauga roof our crew proposed removing the moss first, then applying a chemical treatment to the whole roof aimed at the moss spores. The roof was not treated on this visit, so this page shows no result.
What are the downsides of gutter guards?
They still need cleaning, and moss can get into them. On this Mississauga house, after about 20 years without a cleaning, our crew found the moss grown into the leaf guards and had to brush and wash the gutter system before putting them back.
Do you clean gutter guards in Mississauga?
Yes. This job was in Mississauga. DT Cleaning works across the GTA with 2 crews, from 7 Inverleigh Dr in Etobicoke.
Is your crew insured and certified?
Yes. DT Cleaning carries $2M CGL insurance and WSIB coverage, our crews are Working at Heights certified, and we have 500+ five-star Google reviews.
Related gutter guard and moss case studies
Leaf guards on, and no one has looked under them in years?
On this Mississauga job our crew cleaned with a brush, washed the gutter system out, collected the debris from under the leaf guards and put them back. Call to have your gutters and guards checked.
