If you haven't checked your home has weak mortar, you should do so today. Drag a screwdriver over a joint, if it powders and falls out you too have a weak mortar time-bomb! This is the story of just one site A Taylor Wimpey Development in Peebles Scotland. There are many others up and down the country with most plc house builders. It is their reaction and that of the NHBC which should cause for most concern.