Masonry, Cladding, and Interior Finishes for Lombok Projects

On Lombok, finishes and masonry materials influence durability, maintenance, and compliance outcomes as much as structural elements. The island’s coastal climate, salt exposure, and high rainfall require careful selection and disciplined installation. Below is a practical overview of representative materials and indicative 2025 prices drawn from our internal lists. Figures are for planning and should be revalidated before procurement.

1) Masonry Units and Base Materials

Red Bricks and Blocks

• Bata Merah Kelas I (Class I Red Brick) — Rp 1,174 per pcs
• Bata Merah Kelas II — Rp 1,108 per pcs
• Bataco Pres (Pressed Concrete Block) — Rp 2,999 per pcs
• Bataco Manual — Rp 2,607 per pcs

Stone for Foundations and Walls

• Batu Belah / Pondasi (Split Stone for Foundations) — Rp 259,460 per m³
• Batu Pecah Mesin 1–2 cm (Machine Crushed Stone) — Rp 473,429 per m³
• Batu Quarry/Kali/Gunung (General Quarry/River/Mountain) — Rp 465,731 per m³

Practical notes:

For load‑bearing masonry, ensure compressive strength meets the design.

Use clean, graded aggregates with controlled moisture to stabilize mortar performance.

Keep bricks covered on site to limit salt and moisture ingress before laying.

2) Natural Stone Cladding (Exterior and Feature Walls)

Common Cladding Stones

• Andesite “Catur” — Rp 202,067 per m²
• Palimanan Stone — Rp 189,030 per m²
• Baligrim Stone — Rp 182,511 per m²
• Marble (Batu Marmo) — Rp 195,548 per m²

Installation considerations:

Use stainless or galvanized anchors and breathable sealers in coastal areas.

Control joint spacing and weep details to manage water behind cladding.

Record batch numbers to avoid color variation across elevations.

3) Ceramic, Granite, and Marble Finishes (Interior Wet and Dry Areas)

Ceramic and Granite

• Keramik Lantai Kamar Mandi 20×20 cm — Rp 77,838 per m²
• Keramik Dinding Kamar Mandi 20×25 cm (Kw I) — Rp 77,838 per m²
• Granite Tile 40/40 — Rp 190,000 per m²
• Polished Granite 60×60 (Valentino equivalent) — Rp 177,030 per m²
• Granit Unpolished 60×60 (Valentino equivalent) — Rp 247,694 per m²
• Marmer B1 40×40 — Rp 363,718 per m²

Practical notes:

Confirm slip resistance (especially for bathrooms, pool decks, and service corridors).

Keep a batch log to limit shade variation; inspect boxes before installation.

In high‑humidity interiors, use flexible adhesives and grout with mildew resistance.

4) Roofing Complement for Finish Integration

Even finish planning should reference roofing interfaces to prevent leaks staining walls and ceilings.

Roofing and Ridge Components (examples):

• Spandek Plain 0.35 × 1 m — Rp 58,665 per meter
• Multiroof (Pasir finish) — Rp 48,001 per m²
• Bubungan “Ujung” (Ridge End) — Rp 57,361 per pcs
• Bubungan “Tepi” (Ridge Edge) — Rp 14,992 per pcs
• Bubungan Spandek (3 m) — Rp 90,000 per sheet

Coordination tips:

Match ridge profiles to sheet type to avoid capillary action at laps.

Confirm gutter capacity before finalizing façade stonework to prevent splash‑back and salt staining.

Conduct hose tests at valleys and penetrations before finishing works commence.

5) Timber, Plywood, and Interior Boards

Timber for Formwork and Fit‑Out

• Balok Kayu Bekisting (Formwork Timber Beam) — Rp 1,704,344 per m³
• Balok Kayu Kelas I — Rp 8,432,450 per m³
• Balok Kayu Kelas III — Rp 6,162,175 per m³

Plywood and Boards

• Triplek 120×240×12 mm — Rp 215,103 per sheet
• Triplek 120×240×18 mm — Rp 306,359 per sheet
• Calsiboard 120×240×6 mm — Rp 129,730 per sheet
• Kalsiplank (4 m) — Rp 57,662 per sheet

Practical notes:

For coastal interiors, prefer boards with moisture resistance and proper sealing.

Store boards flat and off the ground; acclimatize before installation to reduce warping.

Log supplier certificates and fire ratings where required by design.

6) Coatings, Sealers, and Wall Systems

Paints and Primers (selected references)

• Cat Tembok Standar (Standard Wall Paint) — Rp 92,108 per kg
• Cat Tembok Mutu Menengah — Rp 168,649 per kg
• Cat Tembok Mutu Tinggi — Rp 274,116 per kg
• Cat Dasar Besi (Metal Primer) — Rp 180,000 per kg
• Cat Penutup Besi (Metal Topcoat) — Rp 150,000 per kg

Gypsum and Partition

• Gypsum Board 9 mm — Rp 84,325 per sheet
• Penutup Dinding Gypsum Board 12 mm — Rp 45,230 per m²
• Dinding Partisi (Partition Wall) — Rp 165,070 per m²

Practical notes:

Use alkali‑resistant primers over fresh plaster and stone to reduce efflorescence.

In wet zones, specify mold‑resistant systems and ventilate voids.

Keep MSDS and datasheets in the site file for inspection and maintenance.

7) External Paving and Landscape Interfaces

Paving Blocks

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

Execution notes:

Control subbase compaction, bedding sand grading, and edge restraints to minimize settlement.

Tie paving falls into drainage points to protect adjacent stone cladding and plaster from splash damage.

Execution and Compliance

• Specifications in Contracts: Define masonry strength classes, stone types, tile ratings, primer/topcoat systems, and roofing compatibility.
• Supplier Verification: Request SNI or equivalent certificates; record batch IDs and delivery notes.
• On‑Site Controls: Sample checks for masonry strength (where applicable), adhesive selection, grout curing, and ridge/gutter leak tests.
• Permit Alignment: Documentation supports OSS submissions, PBG approvals, and SLF issuance by demonstrating installed materials match approved specifications.

Pricing Disclaimer (2025)

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

Summary

For Lombok projects, the selection of masonry, cladding, tiles, timber, and coatings should be tied to climate realities and inspection requirements. The prices above provide a practical budgeting baseline. Final procurement should lock specifications early, verify supplier documentation, and maintain records that align with permits and post‑completion certification.