Plumbing, Roofing, and Exterior Works for Projects in Tanjung, North Lombok

In Tanjung, North Lombok, construction quality relies on correct specification, verified suppliers, and disciplined installation. The following guide summarizes representative plumbing, roofing, and exterior materials with indicative 2025 prices drawn from our internal lists. Figures are for planning; availability and logistics vary across the island and should be revalidated before orders.

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Water Supply and Pressure Lines

PVC Type AW is commonly used for pressurized mains and distribution. Typical references:

• PVC AW Ø4" – Rp 389,000 per meter
• PVC AW Ø3" – Rp 234,000 per meter
• PVC AW Ø2" – Rp 115,000 per meter
• PVC AW Ø1 1/2" – Rp 90,000 per meter
• PVC AW Ø1" – Rp 53,000 per meter
• PVC AW Ø3/4" – Rp 38,500 per meter
• PVC AW Ø1/2" – Rp 28,500 per meter

Where higher mechanical resistance or temperature tolerance is required, GI (galvanized steel) lines are used:

• GI Pipe Ø2" (1.8 m) – Rp 336,000 per meter
• GI Pipe Ø3" (1.8 m) – Rp 495,000 per meter
• GI Pipe Ø1/2" (1.8 m) – Rp 112,000 per meter

Execution points: Choose pipe class by operating pressure and temperature; record jointing methods (solvent cement or threaded/flanged) for inspection and future maintenance.

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Fittings, Valves, and Accessories

Pressure-rated fittings must match the pipe class and diameter. Selected references:

• Elbow PVC AW 3" – Rp 15,000 per pcs
• Elbow PVC AW 1/2" – Rp 5,000 per pcs
• Tee PVC 4" × 3" – Rp 422,729 per pcs
• Tee PVC 3" × 2" – Rp 244,050 per pcs
• Dop PVC 4" (cap) – Rp 43,581 per pcs
• Valve Socket PVC 4" – Rp 70,817 per pcs
• Gate Valve (flanged) 4" – Rp 1,852,160 per pcs
• Water Meter (Water Mour) 2" – Rp 89,339 per pcs
• Floor Drain ex. YUTA – Rp 23,267 per pcs

In practice: Keep an as‑built register of valve positions and meter serial numbers. For hospitality buildings in Tanjung, stainless grates and corrosion-resistant fittings reduce maintenance under coastal exposure.

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Sanitary Fixtures and Storage

Hotels and villas in North Lombok benefit from durable fixtures with known brands and model codes:

• Sitting Toilet – Rp 932,392 per pcs
• One‑Piece Toilet ex. TOTO (CW 421J) – Rp 3,540,656 per pcs
• Wall‑Hung Lavatory L529V1 WF – Rp 463,313 per pcs
• Self‑Rimming Lavatory L 568 V3 – Rp 438,529 per pcs
• Washbasin + Accessories (Set, ex. TOTO) – Rp 2,471,719 per set
• ONDA Bibcock A 801 T 3/4" – Rp 103,784 per pcs
• YUTA Bibcock Polish – Rp 50,479 per pcs
• TOTO Basin Mixer TX109LH – Rp 591,281 per pcs
• Water Tank 1,200 L + accessories (Penguin TB120) – Rp 2,438,924 per pcs
• Water Tank 1,600 L + accessories (Penguin TB160) – Rp 3,321,088 per pcs

Notes: Record product codes in the material log for consistent replacement across phases. Verify traps, brackets, and seals are included to avoid site delays.

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Drainage, Culverts, and Roof Water Handling

Perimeter drainage and roof downpipes must be sized for local rainfall:

• PVC RRJ Ø4" (110 mm) – Rp 150,965 per meter
• PVC RRJ Ø6" (160 mm) – Rp 313,153 per meter
• Buis Sigaran Ø30 cm × 1 m – Rp 173,386 per pcs
• Buis Beton dia 80 cm – Rp 100,509 per pcs
• Square PVC Gutter – Rp 55,000 per meter
• Talang PVC Kotak – Rp 71,702 per meter

Execution: Maintain minimum slopes and compacted bedding for buried lines. Hose-test gutters and downpipes before finishes to confirm flow and joints.

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Roofing Systems and Accessories

Metal roofing is widely used around Tanjung for speed and durability. Thickness and coating determine service life:

• Spandek Plain 0.35 × 1 m – Rp 58,665 per meter
• Spandek Plain 0.25 × 1 m – Rp 39,110 per meter
• Multiroof (Pasir finish) – Rp 48,001 per m²
• Multitup 0.35 – Rp 104,292 per sheet

Ridge and flashings must match sheet profiles:

• Bubungan “Ujung” – Rp 57,361 per pcs
• Bubungan “Tepi” – Rp 14,992 per pcs
• Bubungan “Atas” – Rp 16,296 per pcs
• Bubungan Spandek (3 m) – Rp 90,000 per sheet

Fasteners and battens:

• Roof Batten (Reng 0.40 BMT/0.45 TCT) – Rp 45,629 per pcs
• Spandek Bolt (box @300 pcs) – Rp 222,395 per box

SDS Screws – Rp 229–652 per pcs (as listed)*

In practice: Select thickness by wind uplift and foot traffic. Conduct leak tests at valleys, penetrations, and ridge laps before handover.

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Exterior Paving and Interfaces

For access roads and parking areas:

• Paving Block 6 cm K100 – Rp 93,863 per m²
• Paving Block 6 cm K200 – Rp 113,418 per m²
• Paving Block 8 cm K300 – Rp 147,964 per m²

Execution: Control subbase compaction and edge restraints. Tie paving falls to drainage points to protect façades from splash-back and salt staining.

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Documentation, Testing, and Permit Alignment

• Specifications in contracts: Define pipe class (AW/D), joint type (RRJ/SCJ), valve material, roof thickness, coating class, and gutter capacity.
• Supplier verification: Request SNI or equivalent certificates, mill reports, and delivery notes with batch IDs.
• On‑site checks: Pressure tests for water lines, hose tests for roofs, visual checks for solvent-cement bonds, and torque verification on fasteners.
• Regulatory interface: Maintain records for OSS submissions, PBG approvals, and SLF issuance. Inspectors focus on installed outcomes aligned with approved specifications.

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Pricing Disclaimer (2025)

All prices listed are indicative as of 2025 and based on internal procurement references. Actual costs in Lombok vary by location within the island, supplier, stock availability, and logistics (including shipments from Java/Bali). In remote areas or on tight schedules, prices may be higher than shown. Always revalidate current pricing, units, and specifications with suppliers before tenders or purchase orders.

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Summary

For Tanjung, North Lombok, plumbing and roofing performance depends on correct class selection, compatible fittings, and verified installation. The indicative prices above provide a working baseline for investors. Final procurement should lock specifications early, document batches and tests, and align records with permits to support smooth approvals and handover.