Hello all I'm Rich from Firswood Builders(Wolverhampton)just saying hello and after some advice.we've recently built an extension for a regular client which was finished externally with tyrolean he has now asked us to blow over the rest of the house to match.The walls have been painted on top of previous Tyrol,unsure weather to sbr and thin coat then Tyrol or to chance just trol your advice would be much appreciated as the people at k-rend won't advise on remedial !! Cheers Rich