Waterproofing System For Roofs (Industrial Concrete Slabs)
Summary of application
Step 1: Casting of Roof Slab with the addition of Water Guard Crysta Admix 103 in the concrete mix.
Note: conduits can be covered with a cement sand mortar comprising of Ressi SBR 5850 and Silmix.
Step 2: Application of Water Guard 3020N.
Detailed description
Industrial waterproofing systems for roofs should be designed in a way that it should be easy to maintain and repair and should withstand various environmental and usage
impacts with the passage of time and should remain a part of the structure for its useful life. The system itself should also be easy to execute and repair.
Step 1: Casting of slab, Utility Lines & Screed.
For Roof Slabs, an appropriate internal waterproofing admixture should be used. Water Guard Crysta Admix 103 is a recommended crystalline waterproofing admixture for the roof slab at the time of casting. All other engineering protocols should be followed for covering of utilities under the slab (if any) and the subsequent slab should be cast in slope towards the relevant water drain points. Proper chamfers between the parapet walls and screed should be maintained it is recommended that all the chamfers should be made using Ressi SBR 5850 and Silmix. The dosage of each of these chemicals is 1 Ltr each with every 50 KG bag of cement used in the making of the chamfer.
Step 2: Application of Water Guard 3020N
Over the roof slab, an exposed coating of Water Guard 3020N is recommended. Water Guard 3020N is a one component, acrylic co-polymer based flexible waterproofing system ideal for use on cementitious and metal surfaces. The reason for having an exposed coating is that with regular wear and tear it is easy to maintain this coating over the industrial slab from time to time (Please refer to the product data sheet for further information). The application of Water Guard 3020N is recommended in at least 2 coats of application. Both the coats should be applied in opposite right-angled directions. If the first coat is applied as a top to bottom pattern the second coat is to be applied in a left to right pattern.
Once the coating of Water Guard 3020N has properly been applied, flood tests can be carried out to find various spots of leakage. Once a leak point has been identified, it should be rectified accordingly.
Note: for industrial applications, the coating of Water Guard 3020N has been left exposed. The reason being that regular maintenance of the coating can be done easily when exposed.
What is a Chamfer?
Is a transitional edge between two faces of an object. Sometimes defined as a form of bevel, it is often created at a 45° angle between two adjoining right-angled faces. ( Wikipedia).
In waterproofing systems, making a chamfer is of great significance. Water normally gets stuck in areas which have sharp corners of 90° & on several occasions the leakage of water occurs from this the sharp angle of the water retaining bodies or areas where significant waterproofing is required. To minimize the effect of this, a chamfer is usually created to make sure that there are no sharp angles in the structure to minimize the effect of water coming in & out of the structur
System Summary
ROOFS & BALCONIES (INDUSTRIAL)
A: Slab Pouring with Water Guard Crysta Admix 103
B: Conduit Pipes
C: Cement and sand mortar with Ressi SBR 5850
D: Floor Screed with Ressi SBR 5850 and Silmix
E: Water Guard 3020 N
F: Chamfer with Ressi SBR 5850 and Silmix
G: Drain Point
