How Roof Coating Works | The Science, Step by Step — QC Coatings
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From the shingle up

What's actually happening up there

A roof doesn't fail all at once. It dries out, loses grip on its granules, and then one cold snap finds the crack. Here's the whole thing, in plain English.

Start with the shingle

Your shingle is asphalt held together by oil

Under the coloured granules is a mat of asphalt, and asphalt only stays flexible while its lighter oils are still in there. Sun and heat cook those oils off a little more every summer. Once they're gone, the mat stops bending with the temperature and starts splitting instead — and every split is somewhere for water to sit and freeze.

Dried out, untreated rain soaks straight in Granules shed. The mat cracks. Water gets in, then freezes. After QC Coatings rain beads and runs off Particles bond inside the mat. Water stays out.
Swipe the diagram to see both sides
  • Granule layer
  • Asphalt mat
  • Fiberglass core
  • Treatment particles
What the treatment does

Three jobs, one application

This isn't a sealer sitting on top of your roof. It goes in, and then it does three separate things at once.

Puts the flex back

The particles bond with the asphalt and restore the elasticity it lost to UV. A shingle that can move with a 40-degree temperature swing doesn't crack when the swing comes.

Sheds water instead of holding it

The treated surface becomes hydrophobic, so rain and snowmelt bead and run off rather than soaking into the mat. Less standing water means less freeze damage and far less black algae streaking.

Holds the granules down

Granules are your roof's sunscreen. Locking them in place keeps UV off the asphalt underneath, which is the whole reason the shingle started drying out in the first place.

Why size is the whole trick

Small enough to get in, not just sit on top

Roof paints and elastomeric coatings form a film across the surface. On a shingle roof that's a problem: the shingle can no longer dry out after rain or dew, so moisture condenses and collects underneath. That's why the roofing industry warns against painting shingles.

The particles in our treatment measure roughly 40 to 60 nanometres. A sheet of paper is about 150,000 nanometres thick and a human hair is around 80,000. At that scale the treatment isn't a layer at all — it travels down into the mat and works from inside, and the roof still breathes exactly as it was designed to.

  • No film to peel, blister or discolour
  • Your shingles keep their original colour and texture
  • Ventilation and drying behaviour are unchanged
Animation comparing the width of a human hair with a treatment nanoparticle
Proof you can watch

Same rain, same shingle, two outcomes

Once it cures you can't see the treatment. You can see what water does when it lands on it.

Untreated shingle
Water soaks in and sits in the mat until the temperature drops.
Protected by QC Coatings
Water beads and runs off, taking dirt and algae spores with it.
The day itself

What actually happens at your house

One crew, one visit. Nobody needs to be home, though most people like to be there at the start and the end.

  • Before the day

    We watch the forecast

    The roof has to be dry and staying dry. If the weather turns, we move your date rather than treat a damp roof — it's the single biggest thing that affects how well the treatment takes.

  • Morning

    Walk the roof, fix the small stuff

    Lifted shingles get re-sealed, loose nails get set, and anything that needs a genuine repair gets flagged before we go further. Sealing over a problem just hides it.

  • Mid-morning

    Mask and protect

    Landscaping, siding, windows and driveways get covered. The treatment is applied to your roof and nothing else.

  • Midday

    The treatment goes on

    Applied evenly across the whole roof surface, working in sections so nothing is missed and nothing is doubled up. Most homes take two to four hours depending on size and pitch.

  • Afternoon

    Clean up and hand over

    Everything comes down, the property gets checked, and you get your photos, your paperwork and your warranty. The roof cures on its own from there.

Honest answer time

Is your roof a candidate?

Restoration works on roofs that are aging. It does not rescue roofs that are already failing, and we'd rather tell you that on the driveway than sell you something that won't hold.

0 – 5 years old

Protect it from the start

A new roof still loses oils from day one. Treating early is the cheapest protection you will ever buy, and it means the shingle never gets brittle in the first place.

6 – 20 years old

The sweet spot

Dry, fading, maybe shedding a little granule, but structurally sound. This is where restoration does the most work and where the longest warranties apply.

Leaking or storm-torn

Probably not us

Active leaks, missing sections, or damage through to the decking need repair or replacement. We'll tell you straight and point you toward the right kind of contractor.

Find out what your roof actually needs

Two minutes to answer a few questions about your roof. If it's a candidate, we'll come look at it for free and put a real number in your hand.

Start my free roof check Or call (309) 861-9551
Mon–Sat 8–6 · Sun 9–4