Water Proofing

Check levels/slope of finished slabs, fill up local depressions and correct level/slope as necessary. Ensure that drainage outlets are adequate and are appropriately located in  relation to quick drainage of the water. 

If the RCC slab has been left unprotected for sometime, resulting in cracks, these should be carefully sealed before laying water proofing treatment. 

Mud Phuska 

1. Check the  quality of soil and the  maturity of mud phuska. The chopped  straw should be intimately mixed  with the mortar. 
2. See that the mud phuska is not allowed to dry out fully before brick tiles are laid. 
3. Ensure that brick tiles  are laid on a wet surface. Excessive water should not, however, be permitted. Tiles should be dry at the time of laying  over mud mortar. 

Lime  Concrete in Terracing 

1. Take precautions  as dealt under 'concrete in foundation' in preparation of lime putty and lime  mortar. 
2. Check local depressions, scrape up old and hardened surface and  fill with fresh concrete. 
3. See that the lime concrete has  properly hardened and therapies rebound. Mechanical tampers should be used in large scale construction. A well compacted treatment should not  show any significant depression by a free fall of a brick from 1.5 metre height. 

1. Study carefully details of laying given in Indian Standards Codes and also manufacturer's instructions and follow them precisely. 
2. Ensure that the surface on which water  proofing treatment is to be laid is smooth and does  not have protrusions which could damage the felt/film. 
3. Mark out the position of- layers on roof to ensure adequate overlap. Cut the roll in necessary lengths and flatten them out completely and remove adhering  mica in  fell with a brush. 
4. See that the treatment is completed quickly so that no moisture finds its way under the felt/film. 
5. See that the felt/film is tacked in parapets or walls where  necessary and that sharp corners at junctions are rounded with 7.5 cm dia cement fillets before laying the felt/film. 

Under-Lays

1. See that the bitumen is of correct grade, is heated 10  correct temperature and that  right  quantity is used. Industrial blown type bitumen is usually specified. 
2. Provide a protective ring at outlets to prevent melted bitumen choking up the outlets.