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Question DetailsAsked on 9/30/2015

Blue board on top of old dry wall

We just bought a house that was built in 1960 (original owners sold it to us) and every wall had wallpaper on it. We took down all of the wallpaper and the walls are in rough shape.All of the walls themselves are in tact and sturdy, just the surface is the problem. We have had 5 painters in to give us a quotes and 3 of them suggested that we have blue board installed on top of the dry walls. That way after plaster was put on the wall surface would be in great shape and provide a very nice surface to paint on. My question is has anyone ever had this done in their home before? If so, were you happy with the end product?

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Looks like this one is a year old or more, but popped up in the new postings list for some reason - so will answer just in case this is still pertinent to you :

With messy walls (after stripping texturing or badly banged up due to vandalism or such) it is not unusual to overlay them with 1/4 or 3/8" drywall to give a new, clean surface to work from - can be cheaper to about same price as skimcoating all the wall surfaces.

Does have the disadvantages of slightly reducing room size, possibly requiring resetting outlet and light fixtures so they come to the drywall surface, removing and replacing all trim, having to do new corners, interfering with any cast plaster crown moldings that can't be removed and replaced, etc. Can also cause stairwells to be less than legal width in some cases, because of the increased drywall thickness. Also, can be a time consuming mess at doors and windows, because you have to remove all interior trim (hard to do without at least some damage) and trim out the window frame for the increased thickness (which makes another visible layer of trim and line in the perimeter) then put the trim back on after the drywall has been applied.

Don't know why they would have recommended blueboard, because at least a lot of painters (and other people like myself) find it a lot harder to do a good paint job on - the paper fuzzes up when you paint it, so you have to double prime with sanding in between to get a quality finish paint surface. Normally, blueboard is used as a base for a plaster skimcoat, not designed for painting - I have read some blogs about painters saying you can paint directly over it without a primer, but I don't see how you could get an acceptable jbo that way, because part of the surface would be the absorbant, raised-grain blue paper, some would be skim coated to cover the joints and fasteners, so the base material would be inconsistent - hence the final paint job could not be expected to have a consistent look. I would just use normal drywall if trying to cover up wallpaper issues.

Personally, I would take the wallpaper off and skimcoat to repair any gouges or bad seams or such, then proceed as usual. I have never hit a wallpaper that did not come off reasonalby well with the correct method for the type of adhesive - EXCEPT for some box store epoxy-backed stuff that is dipped in a tray of water to activate the epoxy-based gllue on the back, then put up - that stuff has to be sanded or gouged off, which does leave the drywall a mess.

Maybe what you need is to talk to a General Contractor or few about all-in-one pricing, about the cost to give you a good drywall finish (whether with skimcoat or overlay), INCLUDING resetting trim and outlets and electrical boxes and such, and every thing else needed to give you the type of finish you want. Then you will be talking apples to apples.

Answered 3 years ago by LCD

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