Liners First time making a liner - any quilters out there?

Tonight I'm going to start making my first U-Haul cage liner to go in the new upper level of my cage. My lower level has wood pellets with single layer of fleece on top. But I don't want to do that on the top level due to the weight and because I have a very short coroplast wall on the front (so we can see him better!).

Can I actually quilt through the U-Haul pad? Meaning, I basically was thinking of making a quilt that just lays flat in the cage and that means sewing through all three layers, not just around the edges but maybe in a wide striped pattern on the entire thing. Does sewing through the U-Haul make it so that urine could seep through that tiny hole caused by the sewing needle? If I were to sew it only around the edges, is it going to get all bunched up in the washing machine?

Does anyone use fleece & U-Haul liners that are just flat ones that lay on the bottom, no sides? I'm planning a flat one because my cage is wood and my coroplast goes all the way to the top of the walls. Any tips? I'm thinking that if I can quilt the three layers together (nice fleece on top, U-Haul, cheap fleece on back), it should be a little heavier and lay nicely without scrunching up. I'm just hoping my little guy Randy that lives up there isn't a burrower! (knock on wood). So far, he hasn't showed any inclination to burrow under the fleece on the lower level. Thanks!



Randy : )