REPAIR/REPLACEMENT TO ROOF SHEET, ROOF TREATMENT, REPAIR TO GUARD POSTS AND OTHER MISC WORK AT AF STN PURNEA UNDER AGE (I) (AF) PURNEA

Taking down cement plaster and old APP membrane of any description on concrete surfaces such as soffit of chajjas and brick walls etc. including raking out joints, hacking for keys, scrubbing down with water and rubbish off the premises complete all as specified and as directed.

Material and labour for providing roof treatment to existing roof with APP based polymeric membrane minimum weighing 3kg/sqm and minimum 3mm thick reinforced with polyster non woven fabric (wt. not less than 150 gms/sqm) and sequence of the work is as under:- (a) Roof slab shall be cleaned thoroughly by using wire brush [Mechanical / hand brush] to make it free from any loose particle, dirt / dust, etc. (b) Cement slurry @ 3 Kg/Sqm shall be provided over cleaned roof surface. (c) Thereafter 10mm thick cement screed in cement mortar 1:4 will be applied on surface to have a smooth surface for laying of water proofing membrane. (d) After setting & drying cement mortar, the entire surface of the roof slab shall be cleaned thoroughly to remove all loose particles, dust/dirt particles and applied bitumen primer @ 0.5 litre/Sq.m.