This is an unusual situation but there are homes with cast in place concrete roof systems and typically roofing cement and fiber reinforced roll roofing is applied to the roof to prevent water intrusion.
How to water proof roof building.
Pour about a gallon of elastomeric coating from your bucket onto the roof and begin spreading with your paint roller.
Work systematically from one end to the other spraying in lines.
Don t step on your coat.
The roof covering materials siding foundations and all of the various penetrations through these surfaces must be water resistant and sometimes waterproof.
Apply a suitable roof sealer to your roof if you have a cast in place concrete roof.
Steps to waterproof a roof a typical application of liquid applied roof membranes consists five main steps which should all be treated with utmost importance following the product manufacturer instructions.
To keep water from pooling at these inside corners tom rips 2x4s lengthwise on a 45 degree bevel with a table saw.
Cleaning priming treatment of details main coating application and inspection.
Browse materials for this project on amazon trex butyl waterproof tape.
Bituminous membrane waterproofing is a popular method used for low sloped roofs due to their proven performance.
It is also foot trafficable and the best part is that you need not break your terrace as being done traditionally with brickbat coba method.
The bituminous waterproofing membrane has a torch on the layer and self adhesive membrane.
Here the rubber roof will need to run up the walls and glue to the sheathing.
The trex rainescape deck waterproofing system shown below is an example of a membrane and downspout system.
On two sides the roof abuts a parapet a short wall common around flat roofs as well as a wall for the third floor.
Repeat this process until you have covered the entire roof.
Pour your chosen vapor barrier into a paint sprayer after the primer is dry and liberally spray an even coat onto the concrete roof.
Being uv resistant coating it can be left exposed to sun without any top screeding.
Ames contouring roof fabric.
The dominant solution for waterproofing areas below decks is to drape plastic membranes within joist spaces below decking to form troughs.
This protects your terrace in just 2 easy coats.
Overlap the previous line every time you start a new one.
Allow the finished coat to dry for 24 hours.
Allow the vapor barrier to dry before you add a second coat.
In building construction waterproofing is a fundamental aspect of creating a building envelope which is a controlled environment.