Moss and Debris Roof Inspection: Edmonds's Wet-Climate Roof Threat
Edmonds's rain and tree cover make moss the number-one slow killer of roofs. What a moss-focused inspection finds — and why it matters.
In Edmonds, moss is not a cosmetic issue — it is a roofing problem. Our wet Pacific Northwest climate keeps roofs damp for months, and moss thrives in that dampness: its root-like structures lift shingle edges, trap moisture against the surface, and quietly shorten roof life by years.

What moss does to a roof
M
o
s
s
h
o
l
d
s
w
a
t
e
r
a
g
a
i
n
s
t
s
h
i
n
g
l
e
s
a
r
o
u
n
d
t
h
e
c
l
o
c
k
,
p
r
e
v
e
n
t
i
n
g
t
h
e
d
r
y
i
n
g
c
y
c
l
e
s
r
o
o
f
s
n
e
e
d
.
I
t
s
r
h
i
z
o
i
d
s
w
o
r
k
u
n
d
e
r
s
h
i
n
g
l
e
e
d
g
e
s
,
l
i
f
t
i
n
g
t
a
b
s
a
n
d
b
r
e
a
k
i
n
g
s
e
a
l
s
—
c
r
e
a
t
i
n
g
w
i
n
d
v
u
l
n
e
r
a
b
i
l
i
t
y
o
n
t
o
p
o
f
m
o
i
s
t
u
r
e
d
a
m
a
g
e
.
O
n
n
o
r
t
h
-
f
a
c
i
n
g
a
n
d
t
r
e
e
-
s
h
a
d
e
d
s
l
o
p
e
s
,
c
o
l
o
n
i
e
s
c
a
n
e
s
t
a
b
l
i
s
h
w
i
t
h
i
n
a
c
o
u
p
l
e
o
f
d
a
m
p
s
e
a
s
o
n
s
.
What the inspection evaluates
A
m
o
s
s
a
n
d
d
e
b
r
i
s
i
n
s
p
e
c
t
i
o
n
m
a
p
s
m
o
s
s
c
o
l
o
n
i
z
a
t
i
o
n
b
y
s
l
o
p
e
,
a
s
s
e
s
s
e
s
w
h
e
t
h
e
r
l
i
f
t
i
n
g
a
n
d
s
e
a
l
d
a
m
a
g
e
h
a
s
a
l
r
e
a
d
y
o
c
c
u
r
r
e
d
,
c
h
e
c
k
s
v
a
l
l
e
y
s
a
n
d
g
u
t
t
e
r
s
c
h
o
k
e
d
w
i
t
h
n
e
e
d
l
e
s
a
n
d
l
e
a
v
e
s
(
a
m
a
j
o
r
{
c
i
t
y
}
i
s
s
u
e
u
n
d
e
r
o
u
r
e
v
e
r
g
r
e
e
n
s
)
,
a
n
d
e
v
a
l
u
a
t
e
s
t
h
e
a
t
t
i
c
f
o
r
t
h
e
m
o
i
s
t
u
r
e
i
n
t
r
u
s
i
o
n
m
o
s
s
e
n
a
b
l
e
s
.
D
e
b
r
i
s
d
a
m
s
i
n
v
a
l
l
e
y
s
a
r
e
d
o
c
u
m
e
n
t
e
d
a
s
t
h
e
l
e
a
k
r
i
s
k
s
t
h
e
y
a
r
e
.
Treatment vs. replacement decisions
L
i
g
h
t
c
o
l
o
n
i
z
a
t
i
o
n
w
i
t
h
i
n
t
a
c
t
s
e
a
l
s
u
s
u
a
l
l
y
m
e
a
n
s
p
r
o
f
e
s
s
i
o
n
a
l
c
l
e
a
n
i
n
g
p
l
u
s
z
i
n
c
o
r
c
o
p
p
e
r
p
r
e
v
e
n
t
a
t
i
v
e
t
r
e
a
t
m
e
n
t
.
H
e
a
v
y
c
o
l
o
n
i
z
a
t
i
o
n
w
i
t
h
l
i
f
t
e
d
t
a
b
s
a
n
d
w
i
d
e
s
p
r
e
a
d
s
e
a
l
f
a
i
l
u
r
e
m
a
y
m
e
a
n
t
h
e
r
o
o
f
'
s
r
e
m
a
i
n
i
n
g
l
i
f
e
i
s
m
e
a
s
u
r
e
d
i
n
a
f
e
w
y
e
a
r
s
—
t
h
e
i
n
s
p
e
c
t
i
o
n
'
s
r
e
m
a
i
n
i
n
g
-
l
i
f
e
a
s
s
e
s
s
m
e
n
t
t
e
l
l
s
y
o
u
w
h
i
c
h
s
i
t
u
a
t
i
o
n
y
o
u
a
r
e
i
n
,
s
l
o
p
e
b
y
s
l
o
p
e
.
Related Inspection Services
Serving These Edmonds Areas
- Roof inspection in Downtown Edmonds
- Roof inspection in Edmonds Bowl
- Roof inspection in Firdale Village
Keep Reading
- Roof Inspection Cost Guide: What Homeowners Pay and Why
- How Often Should You Inspect Your Roof? A Homeowner's Schedule
Common Questions
Can I pressure-wash moss off myself?
Please do not — pressure washing strips protective granules and voids most shingle warranties. Professional soft-wash or manual removal is the safe approach.
Do those zinc strips on the ridge work?
They help prevent regrowth on the slopes below them when installed correctly, as part of a broader treatment plan — they do not cure established colonies.
How often should a Edmonds roof be checked for moss?
Yearly, ideally in late summer when growth is visible and treatment conditions are best. Shaded lots may need twice-yearly attention.
Not Sure What Your Roof Needs? Start With an Inspection.
Call Roof Inspection Crew at (888) 974-0663 — your local licensed expert in Edmonds, WA. Mon-Fri: 8:00 AM - 5:00 PM, Sat: 9:00 AM - 3:00 PM, Sun: Closed. Our call representatives are available 24/7 for emergencies.