Knowledge Hub

Window Care & Knowledge

Expert Tips from Amgen's Professional Team

Practical knowledge on mandatory window inspection, window maintenance and typhoon preparation — written by our licensed professionals.

Switched from Window AC to Split Unit? A Complete Guide to Converting the AC Opening to an Aluminium Window: Sealing, Leaks, Rules & Declaration
Window Replacement
August 16, 2026·8 min

Switched from Window AC to Split Unit? A Complete Guide to Converting the AC Opening to an Aluminium Window: Sealing, Leaks, Rules & Declaration

Switched from a window AC to a split unit and left with an opening or a leaking AC sill? This guide covers converting an AC opening to an aluminium window — sealing methods, window types, ventilation rules, Class 2 minor works declaration and leak remediation. Amgen MWC 316/2021.

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How to Inspect Newly Installed Aluminium Windows? A Handover Inspection Checklist: 8 Key Checks, Water Testing & Sign-Off
Window Replacement
August 16, 2026·8 min

How to Inspect Newly Installed Aluminium Windows? A Handover Inspection Checklist: 8 Key Checks, Water Testing & Sign-Off

Just replaced your windows but unsure how to inspect them? Learn how window handover inspection differs from mandatory inspection, 8 acceptance checks, drainage holes & water testing. Amgen Windows MWC 316/2021.

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Floor-to-Ceiling Windows Guide: Pros & Cons, Glass Choice, Safety & Installation
Buying Guide
August 11, 2026·8 min

Floor-to-Ceiling Windows Guide: Pros & Cons, Glass Choice, Safety & Installation

Floor-to-ceiling windows open up the view — but how do you choose one? This guide covers the pros and cons, safety glass (tempered / laminated) choice, child fall prevention, west-sun heat insulation, and installation and replacement points. Essential reading for Hong Kong owners before replacing windows.

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Window Screens & Mosquito Nets Guide: Types, Choosing, Cleaning & Window Replacement
Buying Guide
August 11, 2026·8 min

Window Screens & Mosquito Nets Guide: Types, Choosing, Cleaning & Window Replacement

How do you choose a window screen or mosquito net? What's the difference between retractable, magnetic and sliding-track screens? This guide covers window screen and mosquito net types, key selection points, cleaning and hole repair, and how screens are handled when replacing aluminium windows.

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Window Grilles Explained: Security vs Fall Prevention, Rusted Iron Grilles & Window Replacement
Window Safety
August 9, 2026·8 min

Window Grilles Explained: Security vs Fall Prevention, Rusted Iron Grilles & Window Replacement

Are window grilles for security or fall prevention? What to do about oxidised iron grilles? This guide covers Hong Kong window grille types, their security and child fall-prevention roles, handling oxidised iron grilles, and how to deal with grilles when replacing aluminium windows.

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Aluminium Window Glass Replacement Guide: Shattered Glass, Spontaneous Breakage & Costs
Maintenance & Repair
August 8, 2026·8 min

Aluminium Window Glass Replacement Guide: Shattered Glass, Spontaneous Breakage & Costs

Aluminium window glass suddenly shattered or spontaneously broke? This guide covers the causes of glass breakage, immediate safety steps, the glass replacement process and cost factors — plus how to upgrade to safer glass when you replace it.

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Why Do Windows Get Condensation ('Sweating')? Causes, Risks & How to Fix Aluminium Window Condensation in Hong Kong
Maintenance & Repair
August 4, 2026·8 min

Why Do Windows Get Condensation ('Sweating')? Causes, Risks & How to Fix Aluminium Window Condensation in Hong Kong

Windows covered in droplets on humid spring mornings — you think it's a leak, but it's usually condensation ('sweating')? This guide explains the causes, how to tell condensation from real leakage, the risks, and 5 fixes from ventilation and dehumidifying to upgrading to insulated glass.

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What Is a Top-Hung (Air) Window? Projecting Window Uses, Leak Causes & Replacement Guide
Buying Guide
July 28, 2026·8 min

What Is a Top-Hung (Air) Window? Projecting Window Uses, Leak Causes & Replacement Guide

That small vent window high up in your bathroom or kitchen is the 'air window'. This guide breaks down what a top-hung / projecting window does, why hinges oxidise and it leaks, and the key points for replacement and waterproofing — helping Hong Kong owners keep interiors dry.

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The Complete Guide to Aluminium Window Accessories: Hinges, Handles, Weatherstrips & Wind Clips — Roles and Replacement
Maintenance & Repair
July 26, 2026·8 min

The Complete Guide to Aluminium Window Accessories: Hinges, Handles, Weatherstrips & Wind Clips — Roles and Replacement

An aluminium window is made up of several accessories — hinges, handles, weatherstrips and wind clips — each with its own job. This guide breaks down the role, common problems (oxidation, looseness, hardening) and replacement timing of each, to help Hong Kong owners understand their windows.

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How to Check the Buildings Department Window Inspection Register: Verifying Qualified Persons & Registered Contractors
Inspection Guide
July 23, 2026·8 min

How to Check the Buildings Department Window Inspection Register: Verifying Qualified Persons & Registered Contractors

Before hiring a window inspection company, how do you confirm they are a Qualified Person on the Buildings Department register? This guide walks you step by step through verifying a Registered Minor Works Contractor's qualification, licence class and validity online.

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Do Insulated Glass Units Work? A Hong Kong Homeowner's Guide to Choosing Heat-Insulating Glass Before Replacing Windows
Buying Guide
July 22, 2026·8 min

Do Insulated Glass Units Work? A Hong Kong Homeowner's Guide to Choosing Heat-Insulating Glass Before Replacing Windows

Aircon running all day but the room still feels hot and bills keep rising? This guide breaks down how insulated (IGU), Low-E and double-glazed glass work, compares them with window film, and helps west-facing Hong Kong flats pick the right heat-insulating glass before replacing windows.

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Replacing Iron Windows with Aluminium: What to Do About Oxidised Iron Windows, the Process, Costs & Declaration
Window Replacement
July 22, 2026·8 min

Replacing Iron Windows with Aluminium: What to Do About Oxidised Iron Windows, the Process, Costs & Declaration

Iron windows in old buildings, tong lau and public housing oxidised and rusting, opening poorly or leaking in the rain? This guide explains why to switch iron windows to aluminium, how they compare, the replacement process and Class II Minor Works declaration, plus cost references.

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Mandatory Window Inspection Cost Guide: How Is the Price Calculated? Fees, Repair Costs & Money-Saving Tips
Inspection Guide
July 22, 2026·8 min

Mandatory Window Inspection Cost Guide: How Is the Price Calculated? Fees, Repair Costs & Money-Saving Tips

Received a mandatory window inspection notice and worried about the price? This guide breaks the cost into inspection, repair and documentation, with reference prices, the factors that affect them and available government subsidies — so Hong Kong owners can budget and avoid hidden charges.

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Aluminium Window Seals Hardened, Leaking Air or Water? A Complete Guide to Weatherstrip Replacement Timing, Costs & Tips
Maintenance & Repair
July 22, 2026·8 min

Aluminium Window Seals Hardened, Leaking Air or Water? A Complete Guide to Weatherstrip Replacement Timing, Costs & Tips

Still feel a draught with the window shut, water seeping in when it rains, or mould at the window corners? Your aluminium window seals may be failing. This guide explains the difference between weatherstrips and silicone, the warning signs, replacement timing and costs.

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Aluminium Window 40-Series or 50-Series? Hinge Grades and the Hidden Specs to Check Before Replacing (With a Real Breakage Case)
Buying Guide
July 19, 2026·9 min

Aluminium Window 40-Series or 50-Series? Hinge Grades and the Hidden Specs to Check Before Replacing (With a Real Breakage Case)

Is looking at style and appearance enough when replacing windows? The aluminium extrusion thickness (40-series, 50-series) and hinge grade — these hidden specs decide a window's lifespan. With a real case of a Quarry Bay commercial building whose hinge broke one year after renovation, learn how to choose the right specs before replacing your windows.

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How to Check an Aluminium Window Company Blacklist? Spotting Warning Signs, Verifying Credentials & Comparing Quotes
Buying Guide
July 13, 2026·9 min

How to Check an Aluminium Window Company Blacklist? Spotting Warning Signs, Verifying Credentials & Comparing Quotes

Searching for an aluminium window company blacklist to avoid dodgy operators, but no official list exists? Learn to verify a contractor's registration on the Buildings Department register, recognise 5 warning signs of a dodgy shop, and compare quotes to pick a reliable repair and waterproofing company.

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Public Housing Window Replacement Guide: Application, Responsibility, Cost & Subsidy Explained
Window Replacement
July 6, 2026·8 min

Public Housing Window Replacement Guide: Application, Responsibility, Cost & Subsidy Explained

Oxidised iron windows in your public housing flat? This guide covers the application process, responsibility, Class II Minor Works submission (ICU), cost factors and elderly subsidies — with a real estate project case.

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How to Make Windows Safe? A Hong Kong Family's Guide to Child Fall-Prevention Window Protection
Window Safety
June 29, 2026·7 min

How to Make Windows Safe? A Hong Kong Family's Guide to Child Fall-Prevention Window Protection

Worried about children falling from high-rise windows? This guide compares window safety hazards, opening restrictors / grilles / locks and key selection points — balancing fall prevention with fire escape.

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Do Soundproof Windows & Glass Work? A Hong Kong Glass Selection & Cost Guide Before Replacing Windows
Window Replacement
June 24, 2026·7 min

Do Soundproof Windows & Glass Work? A Hong Kong Glass Selection & Cost Guide Before Replacing Windows

Troubled by road or railway noise? This guide explains how soundproof windows work, compares single / double-glazed / laminated glass, key selection points and cost references.

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Window Inspection Report (Form MWI1) Explained: Pass, Repairs and the Submission Process
Inspection Guide
June 24, 2026·7 min

Window Inspection Report (Form MWI1) Explained: Pass, Repairs and the Submission Process

What does a mandatory window inspection report say? What's the difference between a pass and needing repairs? This guide explains Form MWI1 contents, submission, deadlines and penalties.

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Window Edge Leaking in a Typhoon? 3 First-Aid Steps + Post-Storm Waterproofing Fix
Waterproofing
June 15, 2026·8 min

Window Edge Leaking in a Typhoon? 3 First-Aid Steps + Post-Storm Waterproofing Fix

Window edge seepage or sill flooding during a typhoon or black rainstorm? Learn 3 emergency self-help steps, and why a professional waterproofing fix is essential after the storm. Amgen, licensed MWC 316/2021, with 24/7 typhoon-season support.

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How to Choose a Reliable Window Inspection Company? Verify Qualifications, Compare Fees & Avoid Scams
Inspection Guide
June 3, 2026·8 min

How to Choose a Reliable Window Inspection Company? Verify Qualifications, Compare Fees & Avoid Scams

Received a mandatory window inspection notice and unsure which window inspection company to trust? Learn how to verify Qualified Persons and registered contractors, understand inspection fees, and spot 5 scam warning signs.

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Window Sill Leaking? How to Handle Window Sill Seepage: Source Diagnosis, Repair Options & Acceptance Standards
Waterproofing
June 3, 2026·8 min

Window Sill Leaking? How to Handle Window Sill Seepage: Source Diagnosis, Repair Options & Acceptance Standards

Window sill leaking? Should the works involve re-sealing, redoing waterproofing or window replacement? Learn how to diagnose the leak source and cause, compare three repair options, and understand the works process and acceptance standards to stop window edge seepage before the rainy season.

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Window Repair or Replacement? 5 Key Criteria for Hong Kong Homeowners
Window Maintenance
May 26, 2026·7 min

Window Repair or Replacement? 5 Key Criteria for Hong Kong Homeowners

Should you repair or replace your aluminium window? Amgen breaks down 5 key criteria, cost comparisons and real cases. Licensed contractor MWC 316/2021. Free on-site assessment.

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Window Sill Waterproofing Works: 3 Common Causes, Process & Cost Reference
Waterproofing
May 26, 2026·7 min

Window Sill Waterproofing Works: 3 Common Causes, Process & Cost Reference

Window sill leaking after rain? Learn the 3 common causes, full waterproofing works process, cost reference, which sealant and strip to use for window frame leak DIY, and DIY vs professional analysis. Licensed contractor MWC 316/2021. Free assessment.

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Aluminium Window Handle Problems: Loose, Oxidised or Broken? A Complete Guide to Costs and Timing
Maintenance & Repair
May 18, 2026·7 min

Aluminium Window Handle Problems: Loose, Oxidised or Broken? A Complete Guide to Costs and Timing

Is your aluminium window handle loose, oxidised, or broken? This guide covers the three most common handle problems, when DIY fixes are sufficient, when to call a licensed contractor, and what replacement costs to expect.

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Window Replacement or Waterproofing First? A Hong Kong Homeowner's Guide to Getting the Sequence Right
Window Replacement
May 18, 2026·7 min

Window Replacement or Waterproofing First? A Hong Kong Homeowner's Guide to Getting the Sequence Right

Not sure whether to replace windows or do waterproofing first? Getting the sequence wrong can mean costly rework. This guide covers the correct order for Hong Kong homeowners across common renovation scenarios.

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Planning to Replace Your Windows? A Complete Guide to Minor Works Declaration for Aluminium Windows in Hong Kong
Window Replacement
April 30, 2026·6 min

Planning to Replace Your Windows? A Complete Guide to Minor Works Declaration for Aluminium Windows in Hong Kong

Replacing aluminium windows in Hong Kong? Buildings Department rules classify full window replacement as minor works requiring declaration. Licensed contractor MWC 316/2021 Amgen Windows explains all 3 classes, the Class II process, and common FAQs.

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Aluminium Window Types Guide: Casement, Sliding, Projected & Fixed — Features & Buying Tips
Window Replacement
April 24, 2026·8 min

Aluminium Window Types Guide: Casement, Sliding, Projected & Fixed — Features & Buying Tips

Choosing between casement, sliding, projected, or fixed aluminium windows? This guide covers all 4 types, their features, ideal uses, and how to choose the right style for your Hong Kong flat.

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Aluminium Window Prices in Hong Kong 2026: Replacement, Frame-in-Frame & Reglazing Cost Guide
Window Replacement
April 22, 2026·8 min

Aluminium Window Prices in Hong Kong 2026: Replacement, Frame-in-Frame & Reglazing Cost Guide

How much do aluminium windows cost in Hong Kong? This guide breaks down 2026 prices for full replacement, frame-in-frame, full-removal and reglazing, compares methods, gives full-flat estimates and covers declaration requirements. Free on-site quote — Amgen Windows MWC 316/2021.

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URA Repair Subsidy Complete Guide: Old Building Owners Can Receive Up to $80,000
Repair Subsidy
April 21, 2026·8 min

URA Repair Subsidy Complete Guide: Old Building Owners Can Receive Up to $80,000

Old building owners in Hong Kong can apply for URA repair subsidies of up to $80,000, covering aluminium window replacement and waterproofing. Amgen Windows (MWC 316/2021) handles all documentation. Check eligibility and steps here.

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Complete Guide to Aluminium Window Waterproofing: When to Act & What It Costs
Waterproofing Works
April 20, 2026·8 min

Complete Guide to Aluminium Window Waterproofing: When to Act & What It Costs

Water seeping through windows, hardened weatherseals or loose handles? This guide covers warning signs, waterproofing services, costs and FAQs. Amgen Windows (MWC 316/2021) — free on-site assessment, all 18 districts.

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Don't Ignore Window Sill Leaks: Why You Should Proactively Seek Professional Inspection for Aluminium Window Waterproofing
Typhoon Safety
April 4, 2026·

Don't Ignore Window Sill Leaks: Why You Should Proactively Seek Professional Inspection for Aluminium Window Waterproofing

Window sill leaks are one of the most commonly overlooked yet potentially damaging problems in Hong Kong homes. Rushing to find a contractor for repairs when a typhoon or black rainstorm warning is in effect is often too late — at that point, all maintenance workers are overwhelmed and simply cannot respond immediately.

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Typhoon Tears Off Entire Window Sash: A Real Case for Why Regular Inspections Matter
Typhoon Safety
March 20, 2026·5 min

Typhoon Tears Off Entire Window Sash: A Real Case for Why Regular Inspections Matter

During a typhoon, a neglected aluminium window sash fell off entirely — requiring fire services and police to attend. This real incident shows that regular window inspections are not optional, they are a responsibility.

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Window Opens, Sash Falls: 5 Warning Signs Your Hinges Are Failing
Maintenance Tips
March 10, 2026·5 min

Window Opens, Sash Falls: 5 Warning Signs Your Hinges Are Failing

A homeowner discovered their window sash fell off the moment it was opened — the hinges had completely failed. Learn the 5 early warning signs of hinge failure and act before an accident happens.

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Typhoon Shatters Glass: How to Protect Your Windows Before and After a Storm
Typhoon Safety
March 1, 2026·5 min

Typhoon Shatters Glass: How to Protect Your Windows Before and After a Storm

Shattered window glass during typhoons is a leading cause of home injuries. Learn how to protect your windows before a storm, and what to do if your glass breaks during or after a typhoon.

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Mandatory Window Inspection in Hong Kong: 5 Essential Steps After Receiving Notice
Inspection Guide
March 15, 2025·8 min

Mandatory Window Inspection in Hong Kong: 5 Essential Steps After Receiving Notice

Received a Mandatory Window Inspection notice from the Buildings Department? Don't panic. This guide explains the requirements, process, costs and 5 steps you must complete before the deadline.

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Complete Guide to Window Hinge Replacement: When to Replace & How to Choose
Maintenance Tips
February 20, 2025·6 min

Complete Guide to Window Hinge Replacement: When to Replace & How to Choose

Window hinges are the critical component ensuring window safety. This guide covers 5 warning signs that indicate replacement is needed, and how to choose a high-quality 304 stainless steel hinge.

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Pre-Typhoon Essential: 7-Point Aluminium Window Inspection Checklist
Typhoon Preparation
January 10, 2025·7 min

Pre-Typhoon Essential: 7-Point Aluminium Window Inspection Checklist

Before typhoon season, proper window maintenance is the first step in protecting your home. This 7-point checklist helps your windows withstand strong winds and heavy rain.

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