Sound sheets taking the heat
CovaTherm reflective coating, gentle prep
Cool and protect without touching the covering.
FIBER-CEMENT ROOF COATING
Reflective roof coating for fiber-cement roofs
Cool your fiber-cement roof by 8 to 10°C with no tear-off, and skip a costly removal job.
-8 to -10°C
under the roof
No tear-off
of the covering
20-25 €/m²
no major job
Safe access, gear stays on the ground
Goes on without damaging the substrate
No tear-off
No downtime
Why act
Fiber-cement runs hot, ages fast, and costs a lot to tear off.
It soaks up and passes on heat
Fiber-cement sheets, often dark and barely insulating, get seriously hot in the sun.
It breaks down over time
Fiber-cement goes porous, gets coated in moss, and loses its looks.
Tearing it off costs a fortune
On old roofs, removal is a heavy, costly job — especially when the material falls under asbestos rules.
A reflective roof coating cools and protects the roof without touching the covering.
The Covalba solution
Your roof reflects the sun — no tear-off.
On a fiber-cement roof, the reflective CovaTherm coating goes on with gentle prep, matched to a fragile substrate. It bounces the sun back, drops the temperature, and protects the sheets — no tear-off, no drilling.
The system
- Check the sheets and tailor the prep
- CovaTherm reflective coating
- Solar lacquer on the skylights if needed
On fiber-cement that may contain asbestos, the work falls under local asbestos rules. We confirm the applicable framework during the technical check.
What you gain
Cooler, protected, no major job.
Up to 8 to 10°C cooler under the roof, from the first summer.
A cooler building
The fiber-cement stops passing its heat through. Warehouses and shops are bearable again come summer.
A protected roof
The coating shields the sheets from UV and slows their wear.
No tear-off
You skip a heavy job and the extra cost that comes with old materials.
A fast job
Applied from the ground, with no need to stop work on site.
The right call
Protect the sheets instead of tearing them off.
As long as the sheets are sound, a reflective roof coating takes the heat out and saves you a heavy removal job. On fiber-cement, the gap versus a tear-off is often the widest of all.
Porous sheets, moss
Gentle cleaning, then CovaTherm
Bring back the look and protect, with no tear-off.
Broken or cracked sheets
Swap the bad sheets, then coat the whole roof
Fix the spot issues first, then protect the rest.
Roof at the end of its life
Technical check: a tear-off may be the call
A reflective coating can't save a roof that's beyond repair.
Cool your fiber-cement without a tear-off.
We check the sheets and the regulatory side so you can take the heat out without a costly removal job.
What it works on
Gentle prep, built for a fragile substrate.
Fiber-cement is fragile and can’t take aggressive treatment. So the prep is tailored: gentle cleaning, no high-pressure spray that could chew up the sheets, and no drilling.
01
Étape 01
Technical check
Sheet condition, moss, structural soundness, regulatory context.
02
Étape 02
Prep
Gentle cleaning, without damaging the substrate.
03
Étape 03
Safe application
Reflective coating, sprayed from the ground.
04
Étape 04
Inspection
Quality check and monitoring over time.
Gear at the foot of the building, nothing on the roof. The coating goes on without harming the substrate, done by a trained, equipped crew.
Real results
Measured in the field.
-7.5°C
on surface temperature
Protected sheets
from UV and weathering
No tear-off
of the covering
FAQ
Your questions, our answers.
Skip the tear-off when the sheets can be saved.
CovaTherm cools and protects fiber-cement with gentle prep, matched to the substrate and its regulatory framework.
Check within 48 hoursNo tear-offNo commitment
Tout comprendre sur le sujet.
Fiber-cement covers a big share of the industrial and farm warehouses built last century. It runs hot, ages badly, and tearing it off has gotten expensive.
Why a fiber-cement roof runs hot
Fiber-cement sheets, often dark and barely insulating, soak up the sun and pass it straight inside.
How a reflective roof coating works on fiber-cement
CovaTherm goes on with gentle prep: no aggressive cleaning, no drilling. The coating cools the building and shields the sheets from weathering.
The asbestos case
A big share of old fiber-cement roofs contain asbestos. When they do, the work has to follow the applicable asbestos rules, confirmed roof by roof.
Reflective fiber-cement coating or a tear-off
Ripping off an old roof, hauling it away, and putting up a new one runs into serious money. As long as the sheets are sound, a reflective coating is the cheapest route by far.
A principle backed by research
On a poorly insulated fiber-cement warehouse, a reflective surface shows up fast in summer comfort.
Protection that lasts
The CovaTherm system — polyurethane with a finishing varnish — is built to last 8 to 10 years while protecting the sheets.
Sources et références
- Lawrence Berkeley National Laboratory, Heat Island Group, Reflective Roofs https://heatisland.lbl.gov/coolscience/cool-roofs
- U.S. Environmental Protection Agency, Using Reflective Roofs to Reduce Heat Islands https://www.epa.gov/heatislands/using-cool-roofs-reduce-heat-islands
- EPA, Reducing Urban Heat Islands: Compendium of Strategies, Reflective Roofs https://www.epa.gov/sites/default/files/2014-06/documents/coolroofscompendium.pdf
- U.S. EPA, Heat Island Effect: reflective roofs https://www.epa.gov/heatislands