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 BlueWorks CRM, so we can instantly pull up:
Who we cleaned windows for
Who got gutter cleaning
What street they live on
When we last talked to them
That means we can message the right customers at the right time, and gutter guard installs practically sell themselves.
The Exact Message You Can Send to Sell Gutter Guards
Here’s the script we use, feel free to copy it word-for-word:
**“Hey Liz, this is Daniil with Transparent — we cleaned your windows back in August.
We’re working in your neighborhood this week and offering free gutter cleaning with every gutter guard install.
We use a premium stainless-steel micromesh system with a lifetime no-clog warranty, so you’ll never have to pay for gutter cleaning again.
Have you ever thought about installing gutter guards?”**
It’s short.
It’s friendly.
And it works.
Most homeowners know they should have gutter guards, they just need the right person to offer it.
Why Homeowners Love the Lifetime No-Clog Warranty
The strongest selling point of gutter guards isn’t convenience…
It’s peace of mind.
We give every customer a lifetime no-clog warranty, which means:
If their gutters ever clog, even in 20 years, we come fix it free.
No more maintenance
No more paying for gutter cleaning
This makes the offer a no-brainer.
And because we install stainless-steel micro-mesh gutter guards, they’re actually reliable, durable, and proven to work.
They don’t warp, bend, clog, or trap debris like cheap plastic or foam.
What You Need to Install Gutter Guards (Everything)
Here’s the complete list of materials:
Stainless-steel micro-mesh gutter guards
C-channel front lip screws
Tin snips or metal cutters
Cordless drill
Ladder (you already have this)
Gloves
Safety glasses
That’s it.
No pressure washer.
No special machines.
No chemicals.
Just simple tools and high-margin work.
Should You Add Gutter Guards to Your Window Cleaning Business?
If you want:
Higher profit days
Faster jobs
Upsells that customers actually want
A service that builds long-term trust
Something that multiplies your revenue without extra equipment
Then the answer is yes — absolutely.
Adding gutter guards is one of the easiest and smartest ways to grow your window cleaning business instantly.
Final Takeaway
Window cleaning is great money…
But gutter guard installations?
That’s next-level money.
Your competitors aren’t offering it.
Homeowners already trust you.
And the profit margins are unbeatable.
If you want more breakdowns like this — including scripts, pricing, and real examples — check out more articles on BlueWorks and follow along for more ways to grow your business.