Water proofing

[danger005]

Thanks Danger. I'll check it out.

I was wondering if water does get behind the tiles and it is waterproofed, where should the water drain? Is there a need for a drain hole in the floor??

The floor drain should have small weep holes below the floor level that will collect any seepage but DONT rely on it. Sealing your grout with a good quality sealant should greatly reduce any chance of water getting below the tiles

[woody62]

I am doing a shower over bath. Should I use blue board or bathroom plasterboard? I want to tile over, so which waterproofing product would be suitable for this application?

[Pulse]

Woody, blueboard is a 7.5mm think external sheet for texture coating, usually a 6mm sheet of villaboard would be used in a bathroom situation. As far as paterproofing goes, I've used WPM300 from fullers, the primer is a 50% water dilution with two topcoats at right angles.

Cheers
Pulse

[Cobber]

Is it mandatory to waterproof a bathroom. My builder tells me that is only required for the upstairs bathroom not he bathroom downstairs (which is being renovated).

Cobber

[Cobber]

By the way they are going to put bathroom cement sheeting down and tile over it.

[Cobber]

and I am using the polymarble showerbases...

[Bleedin Thumb]

I did nearly all of the work myself which included glueing and screwing asbestos cement fibre sheeting back down as we replaced all the plumbing.

I hope your wrong about the asbestos bit.

[Purse]

Is it mandatory to waterproof a bathroom. My builder tells me that is only required for the upstairs bathroom not he bathroom downstairs (which is being renovated).

Cobber

As i understand from reading the BCA, all "wet areas" within a building must be waterproof or water resistant.

A wet area is defined in the BCA as:

Wet area means an area within a building supplied with water from a water supply system and includes bathrooms, showers, laundries and sanitary compartments. Excludes kitchens, bar areas, kitchenettes or domestic food and beverage preparation areas.


It then goes on to detail exactly what the requirements are for each area..

Cheers
Purse