Choosing the right caulk for the exterior of a house depends on the material of the surfaces.  Nowadays, silicone caulk is used widely as it can be applied to a variety of surfaces. Silicone also maintains its flexibility throughout the year and temperature changes and does not fail in either freezing or extremely hot temperatures. ●      To learn more about the sealants/caulking we use click here (link to adseal 4580) ●      To learn about the difference between different caulking types click here. ( link to page silicone vs acrylic, polyurethane...etc)