The primary consideration regarding a wet area floor is to ensure that the water drains adequately. The trend to large format tiles brings the added complication of obtaining a floor fall to a single waste outlet and to avoid tile lippage in the process. AS 3740 – 2010 - Waterproofing of domestic wet areas, is a ‘deemed to comply’ standard to the Building Code of Australia.
The primary consideration of this standard, for falls in floor finishes, is to ensure water does not remain on the finished floor in a manner that can adversely affect the health or amenity of the occupants or deteriorate building elements.
Control of water in shower areas is critical. There are two types of showers defined in AS3740, an enclosed shower where water spread is controlled within the shower area. An unenclosed shower where water is not confined within the screened area, residual water is controlled by installing a water-stop that protrudes above the floor level under the base of the screen. Water in unenclosed showers is also controlled by laying tiles to appropriate falls.
AS 3740 – 2010 also states that water should not pond on the floor, with the exception of residual water remaining due to surface tension. In regards to residual water, it should be noted that no amount of slope would see all the water runoff. Consider the angle of a car windscreen, water still beads there, it even beads on vertical window glass, so complete and immediate run off is unrealistic.
The scope of AS 3740 2010 states that ‘The Standard does not cover situations where flooding of the wet areas occurs through overflowing of vessels and showers or plumbing failures’. As such flooding of floors cannot be considered when assessing the effectiveness of the drainage of floors.
Factors affecting falls
The following factors can affect fall ratios:
Finished height requirements at doorways;
Height of fixtures or fittings;
Dimensions of tiles used;
Area of the floor to be drained; and
Requirements of persons with disabilities.
For bathroom floors, the recommended minimum fall to the waste shall be 1:100 (10mm per 1m). For shower areas with a vertical separation between the shower area and the wet area, such as a shower screen, hob, set-down or water stop, the fall to the waste shall be 1:100.
For all other shower areas the recommended fall shall be a minimum of 1:80 (12.5mm over 1m). Where falls flatter than 1:100 are proposed, the effectiveness of the floor drainage should be confirmed to ensure that water does not remain on the finished floor in a manner that can adversely affect the health and amenity of the building occupants or deteriorate building elements. In other words, the water must drain away, with the exception of residual water. In all cases, tiles may require diagonal cutting in the area around the waste to achieve the required falls, sufficient drainage and to ensure lipping is kept within the guidelines of AS 3958.1.
Credit: Australian Tile Council
(07) 5596 1916
83 Lawrence Drive Nerang QLD 4211
Showroom Opening Hours
Monday - Thursday
8:00 AM - 5:00 PM
8:00 AM - 4:30 PM
8:30 AM - 12:00 PM
You'll be smiling, doing your tiling, when you shop at
Most awarded Queensland Tile Showroom
Voted Best Tile Showroom, Nerang Tiles hosts one of the largest Australian tile showrooms displaying thousands of floor tiles and wall tiles at discount prices at its Gold Coast Tile Showroom.
The Nerang Tiles Website is a gallery snapshot only. Displaying a sneak preview of the thousands of tiles on display at its Gold Coast Tile Showroom. Visit in store to see the full range and take advantage of the Nerang Tiles expert team.
Nerang Tiles is a one stop tile showroom, providing full and free colour and design consultation to assist builders, architects, retail and interior designers tile all areas from floors, walls, bathrooms, kitchens, pools, outdoor areas, offices to driveways.
Showcasing the latest in tile design and interior tile trends, including all classic and traditional tile designs, Nerang Tiles has it all. Some of the tiles available include tiles suitable as kitchen tiles, bathroom tiles, floor tiles, wall tiles, outdoor tiles, pool tiles, feature tiles and much more.
Tile Types available at Nerang Tiles: Bathroom Tiles, Kitchen Tiles, Pool Tiles, Outdoor Tiles, Wall Tiles, Floor Tiles, Feature Tiles, Timber Look Tiles, Marble Look Tiles, Stone Look Tiles, Concrete Look Tiles, Pattern Tiles, Mosaic Tiles, Stone Veneer Cladding, Cladding Tiles, Brick Look Tiles, Subway Tiles, Talavera Tiles, Capping Tiles, Listello Tiles, Pencil Tiles, Vinyl Tiles, Safety Tiles, Geometric Tiles, Tessellated Tiles, Mercatto Tiles, Terracotta Tiles, Anti Slip Tiles, Commercial Tiles, Textured Tiles, Sealed Tiles, Structured Tiles, Scored Tiles, Pressed Edge Tiles, Rectified Tiles, Vitrified Tiles, Step Tread Tiles, Coving Tiles, Bullnosed Tiles, Glazed Tiles, Bejmat Tiles, Zellige Tiles, Kit Kat Tiles, Finger Tiles, Unglazed Tiles, Floral Tiles, French Pattern Tiles, Terrazzo Look Tiles, Glow in the dark Tiles, Glass Tiles, Encaustic Tiles, Mosaic Tile Murals, Pool Mosaic Murals, Porcelain Paver Tiles and much more. You are sure to be smiling doing your tiling when you shop at Nerang Tiles.
Find more tile inspiration for your wall tiling or floor tiling through the Nerang Tiles' Pinterest Page, Instagram Page, Houzz Profile or Facebook Page. The Nerang Tiles Social Media pages are constantly updated with new tiles arriving in store and designed inspiration from tile factories and customers for our viewing pleasure.
*Photos are an indication of colour only. Actual goods may vary from images shown due to device display settings, product batch variations and fine detail, and may not be available. Please contact Nerang Tiles to check availability, request samples or view display items .
Information on this website is to be used as a guide only and should not be taken to constitute current professional advice or a formal recommendation and we exclude all representation and warranties in relation to the content of this website. All consumers should seek professional advice through their local Builder's Association for specific, current and individual application.