Johns Manville GoBoard – Waterproof Tile Backer

Johns Manville GoBoard Tile Backer

Image from Johns Manville website

For those of you that are looking for an all purpose tile backer board that is lightweight and waterproof, it seems that Johns Manville has produced a solid product in this department.  Comparing to other brands currently on the market like Kerdi board, Pro Panel and Wedi Board… the GoBoard has a lot of similarities but it seems that some of the small things are adding up to make sense.  First off, GoBoard is rated for floors, shower walls, shower ceilings and countertops and fully waterproof so that you don’t have to add additional waterproofing (except at the seams).

With many of the other products you are instructed to use the specific fasteners produced by that manufacturer but GoBoard is spec’d out to use regular cement board screws or roofing nails.  This allows you to use your stock of regular fasteners and not waste time fishing screws through washers.  Pre-prepped nail and washer setups can be a pain when nailing into corner studs, as well.

When GoBoard is used as a waterproofing application the seams have to be sealed with a polyurethane sealant like NP1 or SikaFlex and cured before setting tile.  You can also use a liquid waterproofing membrane like Laticrete Hydroban or Custom Red Guard to seal the seams.  Check further with using liquid waterproofing in conjunction with specified mesh fabrics for optimal performance which is a good idea regardless.

GoBoard comes in 1/4″ and 1/2″ thickness for the different applications and is a 3’x5′ sheet like a regular sized cement backer board.  For more information, technical data, warranty and where to purchase GoBoard… visit the Johns Manville website.  Have you used GoBoard on a tile installation or shower project?  Please feel free to leave a comment with your experience!

Johns Manville Website

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