I have some very small cracks in the external painted render of the house, extending out from corners of window/door frames about 12" or so. I think the cracks are much too small to get any filler in, perhaps the thickness of 1 or 2 sheets of paper. Any tips on what to fill them with? Paint or filler? I'm tempted to try to get a small pot of colour matched (ish) masonry paint and try to push it into the cracks. The render is sound around the cracks, not lifted/hollow. Thanks.