how can i seal "hairline cracks" on my ceiling without re-doing that section?

Use a squeeze tube of Dap Tub & Tile caulk. This is a great way to hide hair line cracks. Just squeeze a little onto your finger and rub it into the crack.

The advantage of using the caulk over other products (like texture repair, or toothpaste) is that it flexes, preventing future cracks.

The texture repair (like the Homag product) is for when you have a larger discrepancy, its not really suited for hairline cracks.

If your ceiling was painted white, you may not even have to paint over the caulk.

This technique works. Hair line cracks are one of the most common complaints when doing manufactured home warranty service. I've re-visited homes 6 months to 1 year later, and the cracks touched up with the caulk were still hidden.

There are a couple of reasons for cracks to appear. Long fine cracks will often show up along the seam between 2 pieces of drywall. This is usually due to the ceiling flexing just a little (it doesn't take much). When you get a lot of short, interwoven cracks, the texture mix was too wet when it was applied, and it shrunk as it dried.

The Dap Tub & Tile caulk comes in white and almond colors, in stock at most department stores, building supply, and hardware stores. It cleans up with soap and water too.

Have Fun

I did the same thing as you.I floated my walls and put an orange peel texture.I too had fine line cracks.After I painted them they were there.I used spackle on my fingers and rubbed it in.I rubbed off all the excess then touched up the paint.Put painter's tape beside the cracks not to loose them after the spackle is done.

I think this is the product you are looking for! Homax Easy Touch Spray for textures. It's designed especially for ceiling repairs that are textured such are your own. Here's a link to its description - http://www.acehardware.com/sm-homax-and-reg-easy-t... ...

Good luck with your repair!

I too want to ask the same question

You could use what the old folks used...toothpaste .. Squirt a little on your finger and work it into the cracks, but the other poster was probably right.. i dunno..

Sorry, not sure about this