Fortifiant liquide Boost Hot Wire Foam Factory, 16 oz

I've been using this with the foam coat for outdoor signs, and the weatherproofing is already making a difference after a few rainstorms. The 16 oz bottle covered about three medium projects, so the value is solid. My cuts look cleaner, and the finish feels much more durable than before.

Mixed this into my foam coat for an outdoor project and the adherence improvement was noticeable immediately—it went on way smoother than the unfortified mix I used last time. The 16 oz bottle was enough for a full batch, and the finish feels tougher and more weather-resistant. Really glad I tried i

The weatherproofing is a game-changer for outdoor props; I brushed this on a foam Halloween display last week and it’s already held up through a heavy rainstorm. Mixed it right into the foam coat and it spread smoother than usual.