Weather resistant
Does not easily expand, fade or rot from heat and rain.
UPVC Doors
& Windows
Custom UPVC doors and windows that are modern, long-lasting and elevate your premium home — made precisely to your building.
- Weather & heat resistant
- Sound insulating
- Rust-free
- On Time.
- On Point.
- On Your Home.
- On Time.
- On Point.
- On Your Home.
- On Time.
- On Point.
- On Your Home.
- 2023 Established
- 150+ Projects across Java & Bali
- Thousands Doors & windows produced
- 20+ Door & window types
Why UPVC
Why choose UPVC?
UPVC is ideal for Indonesia's tropical climate — functional, elegant and built to last for years.
Low maintenance
No repainting, no rust, easy to clean.
Sound & heat insulation
Keeps rooms calm and energy-efficient.
Eco-friendly
Lead-free and recyclable.
Safe & strong
Reinforced with high-quality material to last.
Profile cut-away
Getting to know UPVC material
This is the inside of a UPVC window corner. These five things make it strong, sealed and long-lasting.
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Selected formulation
Produced with a selected formulation so the profile stays rigid.
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Flexible glass bead
A flexible glazing-bead design that works with any glass size.
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EPDM gasket
Makes the room more soundproof and water-tight.
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Galvanised steel core
Internal chambers hold galvanised steel — adding maximum strength, security and durability.
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Fusion-welded corners
Joints are stronger and withstand pressure.
Illustrative cut-away photo. The shape and number of chambers vary with the profile series chosen.
Comparison
How it compares with other materials
| Wood | Aluminium | UPVC | |
|---|---|---|---|
| Cost | Expensive finishing | Fits a budget | No finishing needed & budget can be tailored |
| Maintenance | Intensive upkeep | Joints need intensive care | No upkeep needed — corners are welded |
| Sound insulation | Not soundproof | Moderately soundproof | Soundproof thanks to rubber seals on frame and sash (same principle as a car door) |
| Weather & heat resistance | Swells, leaks, rots, not heat resistant | Expands, leaks, not heat resistant | Withstands all weather and tropical sun heat |
| Corrosion & termites | Prone to rot & termites | Can corrode | Corrosion-free, resistant to water & humidity |
Gerha UPVC products
Every product is tailored to your needs and site size
Pick a door or window type, then discuss size and colour with our team.
Doors
Swing Door — Full Panel
Opens one way (left/right). Suited to main doors and interior doors.
View details
Doors
Swing Door — Glass
One-way swing with a glass panel — brings natural light into the room.
View details
Doors
Sliding Door
Slides sideways. Saves space — ideal for garden, terrace or tight areas.
View details
Doors
Casement Door (Double Swing)
Two swing leaves for a wider opening. Suited to large main doors.
View details
Doors
Floor Hinge Door
Floor-mounted hinge (usually glass), common for front and commercial areas. Modern, professional look.
View details
Windows
Swing Window
Opens sideways for maximum airflow. Easy to clean.
View details
Windows
Awning / Tilt Window
Opens up or down. Ventilation without opening fully — safe for upper floors.
View details
Windows
Sliding Window
Slides sideways and saves space. Suited to narrow rooms.
View details
Windows
Fixed Window
Does not open — for daylight and facade aesthetics.
View details
Windows
Combination Window
Fixed panels combined with swing or sliding sashes. Flexible to your design.
View detailsComing soon
We are preparing the catalogue for this category. For your needs, please talk to our team directly.
Ask on WhatsAppColours & patterns
From minimal to natural wood grain
Every option stays durable, fade-resistant and easy to care for. Choose a colour to preview.
Illustrative preview. Actual colour may differ slightly — ask for a sample during consultation.
Portfolio
Selected Gerha UPVC projects
Our work across many building types — homes, boarding houses, clinics and places of worship.
Boarding House — Full-Panel Swing Doors & Tilt Windows
Boarding House — Door & Window Detail
Regal-Accent Window & Glass Swing Door
Warno Husada Inpatient Primary Clinic
Two-Storey Home — White Windows
Combination Window with Regal Accents
Mosque — White Doors & Windows
Wide Black Sliding Door
Pool Villa — White Sliding
Glass Door to a Natural-Stone Garden
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How to order
How to order from Gerha UPVC
Five clear steps — from a WhatsApp chat to installation.
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Chat on WhatsApp
Send the rough size, the model you want and the installation location.
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Price quotation
We send you a price quotation. We can meet at your project site, or you can visit our workshop to go through it.
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Re-measure & shop drawings
Our team re-measures on site. You review and approve (ACC) the shop drawings before production.
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Production
Made to the approved size, specification and model — with quality control at every stage.
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Installation
Our team installs doors and windows to protocol, ensuring a neat, precise and fully working result.
On Time. On Point. On Your Home.Why Gerha UPVC
Why choose Gerha UPVC?
We believe a home is more than a building — it is a space of safety and comfort at the heart of family life. Every detail matters, including doors and windows.
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On TimeA clear, structured work schedule.
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On PointSolutions that match your needs.
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On Your HomeTailored to the condition of your building.
- Fast response & clear communication
- Structured, transparent project timeline
- Competitive price, premium quality
Customer reviews
What our customers say
Stories from homes, boarding houses and buildings fitted with Gerha UPVC doors and windows.
No reviews yet. Be the first to share your experience.
Location & Google Business
Find Gerha UPVC on Google Maps
See where our workshop is and open our official business profile on Google Maps.
- Workshop addressJl. Kyai Mojo Raya No. 2, RT 5 / RW 3, Genuk Barat, Ungaran Barat, Kab. Semarang
Articles
UPVC insights for your home
Tips on choosing, caring for and understanding UPVC doors and windows.
Why UPVC suits Indonesia’s tropical climate
Heat, humidity and heavy rain take turns. Here is why UPVC holds up better than wood and aluminium for your doors and…
Read more
UPVC, aluminium or wood: which is right for your home?
An honest comparison of three materials on five points: cost, upkeep, sound insulation, weather resistance, and corrosion & termites.
Read more
Swing, tilt or sliding: choosing a window type
Each window type has its own strengths. Learn how they open so you can match them to the room and the size…
Read moreFAQ
Frequently asked questions
UPVC (unplasticised polyvinyl chloride) is a rigid, strong profile material. In Gerha profiles the internal chambers are reinforced with galvanised steel and corners are fusion-welded for strength and pressure resistance.
No. UPVC needs no repainting, does not rust and is easy to clean. Corners are welded, so joints need no upkeep.
Yes. Every product is tailored to your needs and site. Our team visits to survey and measure, then sends shop drawings for your approval before production.
In stages following progress: a down payment of at least 50% to start production, a second instalment once production is finished (a condition of delivery), and the balance after installation and your confirmation.
Black Glitter, Grey Glitter, Japanese Wood, Dark Oak, Golden Oak, Solid White, Black Color and Glossy Brown — from minimal looks to natural wood grain.
We take custom orders in Semarang and Ungaran. For other locations, please contact us to discuss.
Ready to upgrade your home with UPVC?
The Gerha team is ready to help from consultation to installation — fast response, clear schedule. Contact us for:
- Needs consultation
- Survey scheduling
- Best-solution discussion
Architect or contractor?Discuss specifications, shop drawings and your project schedule directly with our team.
Discuss a project 