REPAIRS TO ROOF TREATMENT, SEEPAGES, EXTERNAL PLASTER TO CERTAIN OMQ AND OTM ACCN AT AF STATION TAMBARAM

Amount

Demolition of unreinforced cement concrete in above ground floors and pavings not exc 15 cm thickness complete all as specified and as directed.

M&L for Plain cement concrete type B1 1:2:4 (using 20mm graded stone aggregate) as in in roof padding,kerbs or mud stops, rounded or chamfered on edges complete all as specified and as directed.

Removing existing water proofing treatment any type like plastering, PCC, Roof tiles, APP membrane etc., including removal of debris, old APP membrane etc.to outside MD land and providing water proofing treatment on horizantal or vertical surfaces by applying oil bound bitumen primer @ 0.20 Kg/Sqm and providing 4mm thick APP modified water proofing membrane weighing not less than 4 Kg/Sqm reinforced with non woven polyster matt weighing not less than 160gm/Sqm including minimum 10cm side lap and 15cm end lap torch sealed and bonded and applying a coat of blown grade hot bitumen 90/15 over and below the membrane @ 1.20 Kg/Sqm and finally after drying over the membrane finished with solar reflective bituminous aluminium paint @ 0.10 Kg/Sqm over plastered RCC roof slab/parapet after cleaning the surfaces by removing dust, dirt etc., complete all as per manufacturers instruction and as directed (Note: Plastering will be measured and paid seperately)

M&L rendering with CM 1:4, 15 mm thick with water proofing compound in roof finishes complete all as specified and directed Note :(WPC will be measured and paid separately)

Supply only Integral Water Proofing Compound

Providing and applying polyurethane waterproofing membrane coating system comprising the followings : A. Removal of exisiting bituminous membrane and mechanical cleaning of surface & treating in sound clean and free from any bituminous residue , dirt, oil, grease etc.. All surface cracks etc filled with Flowfill Grout, all surface patchwork, defects etc. to be repaired with high early strength, fast setting repair mortar using Patchfix concrete, all complete as per the manufacturers specification. B. Providing & applying Ultraseal PU Primer @ 200 ml per sqmt and then applying two coats of single component, moisture cure highly elastomeric & tough polyurethane waterproofing membrane of Ultraseal PU @ 1.2 kg per sqmt in two coats to achieve dry film thickness of 1mm., all complete as per the manufacturers specification. Approved agency - Bostik, STP, SIKKA

Taking down old cement plaster including racking out joint, hacking for keys and scrubbing down with water etc., on wall surfaces all as specified and directed.

M&L for 15mm thick Rendering in CM 1:4 on fair faces of brick work or concrete surfaces of wall all as specified and directed.

Preparation of newly plastered wall surfaces and applying two coats of cement based paint over a coat of external wall primer complete all as specified and directed

Preparation of old surfaces of wall and applying two coats of cement based paint complete all as specified and directed

S&F Self Adhesive water proofing flash bond membrane 100mm wide of make:Bostik India fixed to joints of AC/Ridge portion/over surfaces of galvalume roof sheets/concrete surfaces etc up to 30m height all as specified and as directed by Engineer-in-charge, incl necessary scaffolding and removal of the same after completion of the job.

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