Agree with Rose Bagwell... depending on the weight of the denim and how the quilt will be used, flannel as batting could be an option.

It's up to you. I've done it both ways. It really is quite heavy.

Simple answer, NO. They are very heavy and batting would make them even worse.

I made a rag quilt from recycled denim and flannel. It is really heavier than we like to use without any batting.

I just made a quilt with denim, it was heavy so I did not use any batting.

I have made several both ways. Some people like heavy quilts where others not so heavy. It would be best to try & find out if the person you are making it for wants heavy or not. A lot of my denim quilts I use fleece for the backing & no batting. They are very warm & I have sold several of these.

Ask yourself some questions we are "longarmers" would ask a customer when they bring a quilt for quilting:

1. What is this quilt going to be used for?
2. Do you want it for warmth or just a throw to wick off the cold i.e. at a football game?
3. What type of batting - 4 oz poly batting or all cotton or blend?

You will know what to do with your quilt when you stop and think about its future. I've made several and quilted several denim quilts for others - everyone single customer has put batting of some sort in the quilt. I also have two "camping" quilts made from my childrens clothes - they have batting and a cotton back. My only regret is not putting flannel on the back they would have been warmer when sitting outside at night at a campsite! Good luck. There have been many great responses.

My SIL has made quilts from her kid's old jeans and she only backs them with flannel. I know from having slept under them that they are plenty warm, but not too heavy.

I made a jeans quilt and backed it with flannel. If you have enough people in family wearing jeans you may be able to use the different colors to make a design. It wasn't till I laid all the sq. out that I realised by changing a few I could make a color pattern.

I saved old jeans and make a patchwork denim quilt top and used a poly batt and flannel backing for it. Yes it is heavy but I wanted it to be warm. My son is a truck driver and needed something heavy in the truck. This is perfect for him on the road. He loves it. It washes well and is warm.