Three paths
| Option | When it fits | Rough cost per sq ft |
|---|---|---|
| Recoat | Foam is firm and dry; coating worn | about $2–$4 |
| Re-foam and coat | Foam eroded or ponding everywhere, but roof is dry | about $5–$9 |
| Tear off and replace | Wet insulation or decking, too many layers | more, depending on system |
The deciding question: is it dry?
A roof can look terrible on top and be perfectly sound underneath. Or look decent and be soaked inside. Moisture decides everything: dry roofs can be recoated or covered with new foam; wet roofs need the wet material removed first.
Signs a recoat will do
- Coating is gray, cracked or thin
- Foam shows in some spots but feels firm
- Few or no leaks
Signs you need more
- Foam is dark, powdery and eroded across most of the roof
- Soft, spongy areas
- Ponding everywhere after storms
- Repeated leaks in different places
- Multiple old roofs stacked underneath
Cost over time
Recoating on schedule is the cheapest way to own a foam roof. Skipping recoats until the foam fails roughly doubles the next bill. If you're planning to stay, recoat on time.
See also: spray foam roofing · coating costs
Call (505) 886-8732 for an honest recommendation.
Common questions
Can new foam go over old foam?
Yes, if the old foam is dry and sound after prep.
Do you do membrane roofs like TPO?
We focus on coatings and foam, and will tell you if a membrane roof is a better fit for your home.