Providing and laying roof insulation with 40 mm thick impervious sprayed, closed cell free Rigid Polyurethane foam over deck insulation conforming to IS - 12432 Pt. III (density of foam being 40-45 kg/ cum), over a coat of polyurethane primer applied @ 6-8 sqm per litre, laying 400 G polythene sheet over PUF spray and providing a wearing course of 40 mm thick cement screed 1:2:4 (1 cement : 2 coarse sand : 4 stone aggregate 20 mm nominal size) in chequered rough finish, in panels of 2.5 m x 2.5 m and embedding with 24 G wire netting and sealing the joints with polymerized mastic, all complete as per direction of Engineer-in-Charge
- Item number
- 12.56
- Analysis basis
- 1 sqm
- Priced inputs
- 12
- Derived rate
- ₹1,570.00/ SQM
Under the CPWD Delhi Analysis of Rates 2023 (Civil), item 12.56 (Providing and laying roof insulation with 40 mm thick impervious sprayed, closed cell free Rigid Polyurethane foam over deck insulation conforming to IS - 12432 Pt. III (density of foam being 40-45 kg/ cum), over a coat of polyurethane primer applied @ 6-8 sqm per litre, laying 400 G polythene sheet over PUF spray and providing a wearing course of 40 mm thick cement screed 1:2:4 (1 cement : 2 coarse sand : 4 stone aggregate 20 mm nominal size) in chequered rough finish, in panels of 2.5 m x 2.5 m and embedding with 24 G wire netting and sealing the joints with polymerized mastic, all complete as per direction of Engineer-in-Charge) is derived from 12 priced inputs for 1 sqm and works out to ₹1,570.00 per sqm after water charges, GST, CPOH and cess. The full build-up is below.
- Area for PU Spray = 1 sqm+
- Total=1.10 sqm
- Add for wastage @ 10%=0.10 sqm
| Code | Type | Input | Unit | Quantity | Rate (INR) | Amount (INR) |
|---|---|---|---|---|---|---|
| 7050 | MAT | PU Primer | sqm | 1 | 54.00 | 54.00 |
| 7051 | MAT | 40 mm (average) PU spray having 40-45 kg/ m3 density40 mm (average) PU spray having 40-45 kg/m3 density | sqm | 1.1 | 385.00 | 423.50 |
| 7052 | MAT | GI wire netting 3/4” x 24 G | sqm | 1 | 28.00 | 28.00 |
| 9999 | MAT | Sundries | L.S. | 6.71 | 2.27 | 15.23 |
| 9999 | MAT | Polymerized mastic for all joints | L.S. | 20.13 | 2.27 | 45.70 |
| 7053 | MAT | 400 G polythene sheet | sqm | 1 | 13.00 | 13.00 |
| 9999 | MAT | Cement | L.S. | 44.67 | 2.27 | 101.40 |
| 9999 | MAT | Graded stone | L.S. | 13.75 | 2.27 | 31.21 |
| 9999 | MAT | Sand | L.S. | 21.48 | 2.27 | 48.76 |
| 9977 | MAT | Carriage of material | L.S. | 16.78 | 2.27 | 38.09 |
| 9999 | MAT | For PU spray | L.S. | 80.54 | 2.27 | 182.83 |
| 9999 | MAT | For cement screed with Polythene sheet | L.S. | 53.69 | 2.27 | 121.88 |
- TOTAL
- 1,103.60
- Add 1 % Water charges on “W”
- +11.04
- TOTAL
- 1,114.64
- Add GST on “X” (multiplying factor 0.2127)
- +237.08
- TOTAL
- 1,351.72
- Add 15% CPOH on “Y”
- +202.76
- TOTAL
- 1,554.48
- Add Cess @ 1% on “Z”
- +15.54
- Cost of 1 sqm
- 1,570.02
- SAY
- ₹1,570.00
- PUBLISHED BY
- Central Public Works Department (CPWD)
- EDITION
- DAR 2023 · Delhi
- EFFECTIVE
- 2023-09-14Both volumes are dated 14 September 2023 on their title pages.
- RETRIEVED
- 2026-09-08
- GST
- 18%, added in each item's build-up
- PRINTED PAGE
- 925
From the CPWD Delhi Analysis of Rates 2023 (Civil), Volumes I & II, printed page 925. For reference only. CPWD amends rates through correction slips between editions, so verify against the official source before pricing a bid.
Use this rate in a live estimate
This is the CPWD base analysis. A real estimate adjusts it for the project's inputs and the current cost index, then maps it to the tender's BOQ. We can do this for you: send the tender and we return a priced BOQ on the applicable schedule, with rate build-ups and an engineer's sign-off.