Invisible Sealer by Pavetuf - 5 Litre - Covers 25-50m2Thi is the sealer you should buy if you want to protect your paving but not change its appearance. Unlike most other sealants, the water based Pavetuf Invisible Sealants are unique and fully breathable, allowing efflorescence to escape, whilst preserving the look of the paving and acting as a barrier to protect it against staining. The Pavetuf Invisible and Satin Sealants can be applied as soon as the patio path driveway is completed. Lesser quality