Hi the window ledges in our house are made from concrete blocks, they have been painted but the paint keeps cracking and flaking, do you have a suitable sealant that can be applied on top of the paint that will add extra protection and prevent having to paint these sills every year? Your help and guidance would be appreciated. Thank you
We wouldn't suggest a clear sealant over the existing paint, we would instead suggest removing all loose, flaking and failing paint and instead applying 3 coats of Zinsser AllCoat Exterior Satin or Gloss.