The Secret Add-On That Changed My Window Cleaning Business (No one knows about it)
Operations · 12 min read read
Learn why gutter guard installations are the easiest, highest-margin add-on for window cleaners, how much you can make, and the exact message we use to sell $4,000 jobs to existing customers.
If you're a window cleaner looking for an easy way to make more money, you're overlooking one of the highest-margin services in the entire home-service industry:
Gutter guard installation.
Most window cleaners don’t offer it.
Almost no one talks about it.
And yet it’s one of the simplest, most profitable add-ons you can offer, using the ladder, experience, and trust you already have.
In this guide, you’ll learn:
Why gutter guards are the most profitable add-on for window cleaners
How much you can realistically make per job
The simple selling script that closes jobs fast
Why homeowners love the lifetime warranty
What materials you need
And how to use your existing customer list to sell it effortlessly
Let’s break it down.
Why Gutter Guards Are a Goldmine for Window Cleaners
Window cleaning is a great business…
But gutter guard installation is on a completely different level.
Here’s why:
1. Insane Profit Margins
The math speaks for itself:
Average price you charge: $19 per foot
Material cost: ~$3 per foot
Profit: $16 per foot
Most homes have around 180–220 feet of gutters.
That means:
$3,500–$4,200 jobs
with
~$2,800–$3,500 profit
for only 1–2 hours of work.
There are very few services in home maintenance with margins like this.
2. You Already Have Everything You Need
Unlike pressure washing, soft washing, or holiday lights, there’s almost no extra equipment required.
You already have:
A ladder
Basic hand tools
Safety gear
Experience working at heights
Customer trust
That means zero start-up cost and same-day earning potential.
If you can clean gutters, you can install gutter guards.
3. Your Best Customers Are Already in Your Phone
The easiest way to sell gutter guards?
Your existing window cleaning customers.
These people already opened the door for you.
Already trusted you.
Already paid you.
Window cleaners have a HUGE advantage because the relationship is already built.
At Transparent, we store every customer inside our…