My problem is that I have a one piece tub and after using furring my sheet rock will be even with the fiberglass nailing flange. What should I do in a case like this? I'm tempted to just go throughout the whole bathroom and adding a nother layer of 1/4''. If some one could help me avoid this it would be awesome. Thanks in advance.

All drywall goes over the nailing flange. Is this a new tub installation?

It sounds like you installed a new tub up against old drywall/plaster and forgot to sink in the tub or built it out wrong. If the Tubs nailing flange is against the furring strips, then drywall over that and over the tubs flanges.

On a side note of this is a new tub install did you set it in brown Coat "structolite" that goes under the tub. The factories ( bottoms contact points are never enough for a real solid tub bottom.

STRUCTO-LITE Basecoat - USG Corporation (http://www.usg.com/navigate.do?resource=/USG_Marketing_Content/usg.com/web_files/products/prod_details/USG_Structo-Lite_Plaster.htm)

All drywall goes over the nailing flange. Is this a new tub installation??

It sounds like you installed a new tub up against old drywall/plaster and forgot to sink in the tub or built it out wrong. If the Tubs nailing flange is against the furring strips, then drywall over that and over the tubs flanges.

On a side note of this is a new tub install did you set it in brown Coat "structolite" that goes under the tub. The factories ( bottoms contact points are never enough for a real solid tub bottom.

STRUCTO-LITE Basecoat - USG Corporation (http://www.usg.com/navigate.do?resource=/USG_Marketing_Content/usg.com/web_files/products/prod_details/USG_Structo-Lite_Plaster.htm)

Thanks for the reply, but I thought our bathroom was 60intches, but it is actually 61.5. Im installing a new tub in a remodel. I know it need to go against the furring strips but my bathroom is to wide and I'm blending into the current 3/4 sheetrock (one 1/2 one 1/4). And you I haven't set the tub yet but I will use plaster of pairs. The manufacture recommended plaster of paris and my firend who is a contractor said that would be fine.

Things should work out here for furring strips on both sides. 60" and divide the 1 1/2 " to a furring strip on both ends..

When you use the brown coat just set the tub and level it and don't nail the flanges until the next day.

What I'm doing is trying to tie into the rest of the Sheetrock in the bathroom. So at this point are you pretty much saying that I will have to tear out all the other walls. Also you keep saying brown coat, do you not recommend the plaster of paris?

The exact product I posted is what to use here. Its actually a base coating for a plaster wall, just like in the old days. Strutcolite is a light weight material and hardens like concrete and sticks to wood and most all materials. Be careful not close in the tub drain area with it in case you need future access to those areas for service work.

If you walls are 61" 1/2 inches then you need to build in not really tear out. How ever you will more then likely need to adjust for the tub drainage and the plumbing supplies. So some or all could be torn out just to inspect the supplies etc.

But its very possible to use 3/4 furring strips to nails through existing walls studs and drywall/plaster there and build in.

I know I'm throwing it both ways here. Personally I would tear out for the basic reasons to inspect the wall cavities for the proper insulation and the most important vapor barrier in the ceiling.