UltriSeal is Mar-flex Waterproofing and Building Products’ newest product. Many reputable competitors manufacture concrete sealers, and some manufacture radon sealers, but no one offers them in the same product. For this, Mar-flex has developed UltriSeal, with the versatility to be painted on any concrete surface, from foundation walls to the driveway. UltriSeal isn’t just a great concrete sealer, it also protects against harmful radon and other elements that are dangerous to your health. Choose UltriSeal today, and experience Mar-flex’s commitment to quality and reliability.