I’ve recently discovered a new lime product- lime paint. A couple of years ago I realised just how much the stonework had deteriorated around our windows. The reasons for this are simple when we had the double glazing put in 20 odd years ago they used cement rather than lime mortar. I have been told and believe it that the stone is weight supporting. This August I felt I had to do something about it. I’ve blogged extensively on lime and its importance but not used lime paint before. This first image shows the house in 2002. The windows surrounds look OK but already there are issues.
By this year they looked like this.
This has been a two stage process. The first has been to patch up the stone which was in a as bad a state as I feared. I used a lime mortar for stone repairs. This window above was the worst. Parts of the right hand bottom side fell off when I touched them. I had to use the lime to build the edges up again. This has been very successful. The bottom left was even worse. A football sized hole opened up as the sand ran out like that from an hourglass. I packed the hole that was at the rear with lime, small stones and even bits of pottery and brick.
Once I had done this patched up other bits on other windows where I did the same (although they were not as bad) and rubbed down the existing masonry paint I was ready to paint on the lime paint. The lime paint comes dry in a range of colours ready made and can also be customised, all made using mineral dyes. You mix it adding water to a mark and you are off.
It goes off after a couple of weeks although I have found its OK after nearly three. You paint it on with a brush. Its very runny but covers better than anything I’ve ever used. It also sticks to masonry paint just fine. It looks great. Its not perfect but looks much better. The underlying cement issue remains however. One final thing to note the paint as you will see is a different colour when its dry from when its wet (permanently). This is a weird feature of lime products but does mean the colour we thought we were choosing is not the one we ended up with.