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How To Waterproof and Steps For New and Existing Terrace using cost-effective and innovative solutions

 

How to Waterproof New & Existing Terrace/Roofs?

What are the steps for Waterproofing New Terrace & Existing Terrace? 

How to avoid leakages on the terrace?

What is the waterproofing material used for Waterproofing Terraces?

What is the solution for water leakages?

Introduction:

Waterproofing is the treatment or protection of structures and objects that makes them waterproof. It acts as a barrier for terraces, walls, roofs, and other structures which keeps them away from water, soil moisture, etc. Waterproofing is installed by using modern technology which should be effective during monsoon, climatic changes & weather conditions. 

1. A) Steps for Waterproofing New Terraces:

Step 1. Clean the slab of all dust, dirt, oil, grease, grime, etc.

Step 2. Pond (Flood) the entire terrace area with water to check for cracks/ Dampness/ Leakages

Step 3. Prepare a slurry using 1 kg of Polyalk WP and 0.25 kg of cement and apply it by brush on the bare slab. Mixing should be done using a low-speed stirrer to form a lump-free consistency. NO WATER SHOULD BE ADDED. PREPARE AS MUCH SLURRY AS THAT CAN BE USED IN 30 MINUTES.

Step 4. After 24 hours, apply a second coat of similar slurry of the same proportion 

Step 5. Air Cure the surface for 24-48 Hours 

Step 6. Cure the coating with damp gunny bags for 4-5 days

Step 7. Pond (Flood) the entire terrace to check the effectiveness of the waterproofing treatment.

Step 8. While this coat is wet and tacky lay the cement mortar for providing brickbat coba. This has to be a wet-on-wet application. Add SUNPLEX (330 gm Pouch) per 50kg bag of cement in the mortar mix for brick bat coba.

Step 9. Proceed with providing conventional brick bat coba and I.P.S over the terraces as per standard construction practice, ADD SUNPLEX (330gm) pouch in the cement mortar mix of the I.P.S. to minimize the shrinkage cracks on the I.P.S.

1. B) Steps for Waterproofing Existing Terraces (If the Brick Bat Coba is Sound & Good):

Step 1. Break open the existing I.P.S on the Terrace and reach the top layer of the BB coba

Step 2. Clean the BB coba & provide a10mm C: M leveling course of clean cement sand mix over it. Cure Appropriately

Step 3. Prepare a slurry using 1 kg of Polyalk WP and 0.25 kg of Cement and apply by brush on the leveling course. Mixing should be done using a low-speed stirrer to form a lump-free consistency. NO WATER IS TO BE ADDED.

Step 4. After 24 hours apply a second coat of slurry using 1 kg of Polyalk WP and 0.25 kg of cement and apply by brush on the first coat. Mixing should be done using a low-speed stirrer to form a lump-free consistency. NO WATER IS TO BE ADDED.

Step 5. Air cure the surface for 48 hours

Step 6. Cure the coating with damp gunny bags for 4-5 days

Step 7. Prepare a third coat of slurry using 1 kg of POLYALK WP and 0.25 kg of cement and apply by brush on the second coat. Mixing should be done using a low-speed stirrer to form a lump-free consistency. NO WATER IS TO BE ADDED.

Step 8. While this coat is wet and tacky lay the cement mortar for providing I.P.S. This has to be a wet-on-wet application. Add SUNPLEX (330 gms pouch) per 50Kgs bag of cement in the mortar cement.

1. C) Steps for Waterproofing Existing Terraces: 

Step 1. Break open the existing brick bat coba and I.P.S. of the terrace to expose the bare slab.

Step 2. Pond (Flood) the entire terrace area with water to check for cracks/ dampness/ leakages.

Step 3. Moisten the crack and apply a bonding coat of Polyalk EP and cement slurry in the ratio of 1:0.5 in the groove.

Fill the cracks with polymer modified mortar

Step 4. Within 30 minutes of application of Bonding Coat, Prepare and apply by hand POLYMER MODIFIED MORTAR using 2 Kg Polyalk EP, 5 kg cement, 15 kg graded quartz sand. DO NOT ADD ANY WATER TO THIS MORTAR. This has to be a wet-on application.

Step 5. Air cure the surface for 48 hours

Step 6. Sprinkle Water for 3-4 Days

Step 7. Clean the slab of all dust, dirt, oil, grease, grime, etc.

Step 8. If there are lots of honeycombs and identified bad patches of concrete the same should be grouted accordingly. Following grouting procedures.

Step 9. Prepare a slurry using 1 kg of Polyalk WP and 0.25 kg of Cement and apply by brush on the bare slab. Mixing should be done using a low-speed stirrer to form a lump-free consistency. NO WATER IS TO BE ADDED.

Step 10. After 24 hours apply a second coat of slurry using 1kg of Polyalk WP and 0.25 kg of cement and apply by brush on the first coat. Mixing should be done using a low-speed stirrer to form a lump-free consistency. NO WATER IS TO BE ADDED.

Step 11. Air cure the surface for 48 hours

Step 12. Cure the coating with damp gunny bags for 4-5 days.\

Step 13. Prepare a third coat of slurry using 1 kg of POLYALK WP and 0.25 kg of cement and apply by brush on the second coat. Mixing should be done using a low-speed stirrer to form a lump-free consistency. NO WATER IS TO BE ADDED.

Step 14. While this coat is wet and tacky lay the cement mortar for providing brick bat coba. This has to be a wet-on-wet application. Add SUNPLEX (330 gm pouch) per 50 kg bag of cement in the mortar mix for brick bat coba.

Waterproofing material used for Waterproofing Terraces:

1. Polyalk WP: Polyalk WP is the most effective and proven polymeric waterproofing solution.

Benefits of Polyalk WP:

1. High flexural strength and extraordinary adhesion

2. Alkaline and compatible with concrete

3. Prevents carbonation

4. Can be used as a base waterproofing coat

5. Tested as per DIN 1048 for permeability

6. Most effective and proven polymeric waterproofing solution

2. Sunplex: 

Sunplex is an admixture in a powder form that compensates shrinkage in cement base mixes like grouts, mortars & plasters. The stabilizer of the admixture provides homogeneity, counteracts, intrinsic, shrinkage, and settling characteristics while the plasticizer helps to achieve high workability while controlling the water.

Benefits of Sunplex:

1. Comprehensive Strength – Workability enhanced, strength improved when cured under restraint

2. Setting time: Insignificant change in setting time of grouts

3. Compatibility – SUNPLEX is compatible with all types of content

3. Polyalk EP: 

Polyalk EP is a polymeric formulation that strengthens & modifies the microstructure of cement-based hydrated products forming a polymeric spatial network in its voids, complementing the cement paste characteristics.

Benefits of Polyalk EP:

1. Polyalk EP increases interfacial adhesion, impermeability, tensile strength & flexural strength 

2. Compensates for volume changes due to shrinkage