CPWD Analysis of Rates · Roofing
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
- Details of cost for 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 | Input | Unit | Quantity | Rate (INR) | Amount (INR) |
|---|---|---|---|---|---|
| 7050 | PU PrimerMaterial | sqm | 1 | 54.00 | 54.00 |
| 7051 | 40 mm (average) PU spray having 40-45 kg/ m3 density40 mm (average) PU spray having 40-45 kg/m3 densityMaterial | sqm | 1.1 | 385.00 | 423.50 |
| 7052 | GI wire netting 3/4” x 24 GMaterial | sqm | 1 | 28.00 | 28.00 |
| 9999 | SundriesMaterial | L.S. | 6.71 | 2.27 | 15.23 |
| 9999 | Polymerized mastic for all jointsMaterial | L.S. | 20.13 | 2.27 | 45.70 |
| 7053 | 400 G polythene sheetMaterial | sqm | 1 | 13.00 | 13.00 |
| 9999 | CementMaterial | L.S. | 44.67 | 2.27 | 101.40 |
| 9999 | Graded stoneMaterial | L.S. | 13.75 | 2.27 | 31.21 |
| 9999 | SandMaterial | L.S. | 21.48 | 2.27 | 48.76 |
| 9977 | Carriage of materialMaterial | L.S. | 16.78 | 2.27 | 38.09 |
| 9999 | For PU sprayMaterial | L.S. | 80.54 | 2.27 | 182.83 |
| 9999 | For cement screed with Polythene sheetMaterial | 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
From the CPWD Delhi Analysis of Rates 2023 (Civil), Volumes I & II, printed page 925. Reference only — CPWD amends rates through correction slips between editions, so verify against the official source before pricing a bid.
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