Provided are polyvinyl chloride profile compositions comprising (a) polyvinyl chloride having a K value of from K-63 to K-70, (b) an impact modifier, and (c) ground calcium carbonate having (i) a d50 particle size value of 400 to 900 nm, (ii) a d98 particle size value of less than 2.6 μm, and (iii) a ratio of particles having a d50 particle size value to particles having a d20 particle size value (d50/d20) of less than 2.0.