Most water-based membranes require a final application rate of approximately 1.5L per per square meter. This is often achieved with two coats, however, as application techniques and membrane viscosity vary, you may need to put on further coats to achieve that type of usage.
Typically, two coats of the membrane are applied across the shower enclosure floors and walls or the entire bathroom floor to ensure a thorough job. Once the waterproofing membrane has been applied, a layer of protective material is placed over it. This could be either tiles or another type of cladding.
It's tempting to believe that adding more coats of waterproofing will automatically offer better protection. However, this isn't always necessary. While areas with high moisture exposure may require additional layers, in many cases, two coats are sufficient to provide strong, reliable protection for your bathroom.
APPLICATION OF THE PRODUCT Mapelastic AquaDefense must be applied in two even coats (minimum 0.4 mm wet film thickness per coat) with a long-haired roller, brush or trowel.
Drying Time
Allow the membrane to dry for approximately 1-2 hours prior to applying the second coat. Allow the membrane to dry for 6-8 hours prior to tiling or other finishes.
Most water-based membranes require a final application rate of approximately 1.5L per per square meter. This is often achieved with two coats, however, as application techniques and membrane viscosity vary, you may need to put on further coats to achieve that type of usage.
As the rains subside, it makes for the perfect time to work on waterproofing your home. With no high temperatures and harsh rains to disrupt the process of waterproofing your home, you get to rapidly protect your home in time.
Mapelastic AquaDefense is ready to receive thin-set mortars for tile or stone when dry to touch (about 30 to 50 minutes after applying second coat).
Only one coat of this sealant is enough to protect your deck from mold, mildew damage, and rain. Even more, one coat ensures great UV protection to keep your entire deck healthy. Consider applying this sealant on a finished deck, as this will provide extra protection and will make your deck last even longer.
Many sealers only require one coat per application which is ideal, however, this can still be an issue if they are a film forming product and build layers on top of the wood which will eventually start separating from the wood (much like the description above with thick water based stains.)
Quality waterproofing systems should last for at least 10 years and sometimes they can last much longer given the right circumstances. However, this is largely dependent on many factors including: The type of waterproofing materials used.
If you are using a liquid waterproofing membrane for your shower (most common for DIY projects), you should install at least two coats. Most liquid membranes will come with directions related to how long you need to wait between applying coats.
Once the shoes have been cleaned of dirt and dust and are completely dry, it is time to waterproof the uppers and all the seams and edges. To do this, spray the shoe from a distance of about 20 cm. Two or three thin coats are usually enough to make the upper material resistant to water and dirt.
How many coats of Mapelastic® AquaDefense are required? All corners should be pre-treated with at least 2 coats of MAPEI's Mapelastic AquaDefense.
While the membrane protects against water penetration into your home's foundation, it also works as an adhesive surface for the primer and paints you'll use to finish your project. So yes, you can paint over the waterproofing membrane!
RedGard® is dry when it turns solid red, with no visible pink color. Typically, drying time is 1-1.5 hours for each coat. After the second coat is applied and both coats are fully dry, the application area can be flood tested.
In conclusion, you can tile straight onto waterproofing provided the surface is non-porous and smooth. If you are tiling onto a porous surface, such as concrete, make sure to seal it first. And if you are tiling onto a rough surface, such as brick, make sure to smooth it out first.
Which thin-set mortar should I use over waterproofing membranes such as Mapelastic AquaDefense and Mapelastic HPG? The thin-set mortars recommended for waterproofing membranes are polymer-modified thin-set mortars. Do not use mastics such as Type 1 or Ultramastic ECO on waterproofing membranes.
Mapelastic AquaDefense can be flood-tested after 12 hours of drying time, is IAPMO-listed for use as a shower-pan liner, and exceeds ANSI A118. 10 and ANSI A118. 12 standards.
Allow 1-2 hours between first and second coats. If DUNLOP® POLYESTER REINFORCING MAT is used between coats the second coat should be applied while the first coat is still wet. The membrane will be completely dry after 48 hours at 23°C or 5 days at 10°C.
Wind, airflows, humidity, fog, snow and rain all have their own issues when it comes to using liquid membranes and can severely affect the future performance of the applied waterproofing coat. Water falling onto waterborne and cement-based membranes can mean they don't dry properly and potentially can be washed away.