How to waterproof your shower like a pro

Warm, humid temperatures, lack of windows and ventilation and excess moisture build up create the perfect environment for mould or mildew growth. While you may think your shower tiles and composite are enough to resist moisture, they are no replacement for proper waterproofing

Over time, water seeps between the tiles and into the flooring beneath, putting your bathroom at risk of mould, mildew and foundation or wall rot. So, if you want to protect your bathroom with DIY waterproofing, follow these simple steps!

Plan ahead

Waterproofing needs to be applied to your shower right before you’re ready to place tiles. Make sure you leave yourself enough time to build up coats of Liquid Rubber, keeping in mind that showers require four coats.

Clean all surfaces

Thoroughly clean the entire shower footprint and surrounding walls (sanding if necessary). Remove all dirt and dust from wall and floor surfaces and allow the entire area to dry before continuing.

Bridge the seams

Bridge all the seams, cracks, joints and corners in the shower using reinforcing fabric. First coat these areas with approximately 1 mm Liquid Rubber and lay your fabric down while the coating is wet. Smooth out any ripples. Allow the Liquid Rubber to dry for about an hour (give it longer if you’re in a humid climate). 

Once dry, apply an additional coat of Liquid Rubber to fully seal the reinforcing fabric. Allow the new coat to dry for 4-6 hours (until dry to the touch and all one colour).

Apply your Liquid Rubber membrane

Apply Liquid Rubber to the entire shower surface with a 10mm microfiber roller. Aim to lay down a heavy coat of Liquid Rubber with a thickness of 1-1.5mm. Wait 4-6 hours for this coat to dry completely. Again, this time frame may be slightly longer if you’re working in a high humidity temperature.

Layer up coats

Make sure your first coat is dry to the touch and then apply a second coat on top and allow to dry to another 4-6+ hours. Continue this method for another 2 coats for a total of 4 coats. Each coat should be uniform in depth and colour, with even coverage.  

After your final coat, let the area cure for at least 48-72 hours. Once fully cured, you can apply your tiles directly to the waterproofing membrane using a polymer modified thin set grout.

Get waterproofing with Liquid Rubber DIY

Whether you’re renovating your bathroom or building a new home, quality waterproofing is essential. If you’re looking for the ultimate waterproofing sealant, you can trust Liquid Rubber DIY. Water-based and non-toxic, this sealant is simple to use and suitable for use on nearly any surface. You can shop Liquid Rubber DIY products here.