If you are a Welsh Water customer you can sign up to receive a winter lagging kit for free! An easy to fit DIY pack supplied with the highest quality insulation items for your home pipe and taps. It can be used indoors or outdoors. What’s in the Pack? 1 x 2m length of pipe insulation. This is a self sealing product, easy to fit and very effective. 1 x Tap protection jacket. Follow instructions to see if you qualify.