Planning a bathroom renovation? Don't skip the waterproofing! This IB Tools membrane is exactly what you need to protect your shower, bathroom, or any wet area from water damage. At 20 mil thick and 3.3 feet wide, this heavy-duty underlayment creates a solid barrier that keeps moisture where it belongs - away from your subfloor and walls. It's perfect for installing under ceramic tile, porcelain, stone, marble, or even glass tiles. The installation process is pretty straightforward - you just apply thin-set mortar, lay down the membrane, and then tile right over it once it's cured. What I really love is how this stuff handles vapor too - it's got a low permeability rating that makes it ideal for steam rooms and showers where moisture protection is absolutely critical. The membrane has non-woven polypropylene fabric on both sides that creates an amazing bond with the mortar above and below. Whether you're a DIY enthusiast tackling your first bathroom project or a professional contractor working on commercial spaces, this membrane delivers reliable performance that meets residential and commercial standards. It works great in kitchens, balconies, laundry rooms - anywhere you need serious water protection. The 210 square foot roll covers a good-sized bathroom, and you can order different sizes depending on your project needs. Seriously, skipping proper waterproofing is one of those regrets people have years later when they're dealing with mold or structural damage. This membrane gives you peace of mind that your beautiful new tile job will stay beautiful for years to come.