About Top 1 Window – Trusted HDB & BCA 3/4 Window Installer in Singapore

Since 2010, Top 1 Window has been a trusted HDB and BCA 3/4 window contractor in Singapore, offering expert window installation and replacement services. We specialize in aluminium windows, doors, and gates, window grilles, and wrought iron gates, grilles, and fences. Our range of products includes sliding windows, casement windows, and naco windows, all customized to meet your unique needs.

With a focus on high-quality materials and customer satisfaction, we ensure every project is completed with precision and care. Whether you’re renovating your home or upgrading your commercial space, we provide reliable solutions, backed by over a decade of experience, that guarantee safety, durability, and style.

Why Homeowners & Businesses Choose Us

✓ HDB & BCA Compliant & Certified 3/4 Window Installer

✓ Over 15 Years of Experience in Windows & Doors

✓ Direct Factory Pricing with No Hidden Costs

✓ Fast & Professional Installation 7-10 Days Lead Time

✓ Durable & High-Quality Aluminium Products

Our Services

Casement Window Design

Aluminium Windows

We supply and install a wide range of options, including sliding, casement, top-hung, Naco, and slide-and-swing windows. Whether you’re upgrading your HDB, BTO, private home, or commercial space, we’ve got the perfect fit for you.

Aluminium Window Grille

Aluminium Window Grilles

Our high-quality aluminium window grilles are built to last and can be customized to fit your space perfectly. Choose from a wide variety of designs, including slim window grilles, lattice window grilles, pet-friendly options, and more. Tailored to meet your lifestyle and home needs, our grilles offer both safety and aesthetic appeal.

Premium Bifold Door

Bi-fold Door

Maximize your space with our stylish and functional bi-fold doors. Ideal for bathrooms and kitchens, they come in a variety of designs to complement your interior. Wide range of designs and colours available.

Condo Invisible Grill

Invisible Grilles

Enjoy an unobstructed view while keeping your home safe. Our innovative and sleek invisible grilles provide security and peace of mind — perfect for homes with beautiful landscapes.

Aluminium Gate

Aluminium Gates

Our aluminium gates provide a secure, stylish, low-maintenance solution for your home or business. Lightweight yet durable, they offer long-lasting protection. Custom designs are available to match your style and security needs.

Sliding Door 2025 1

Aluminium Doors

Add timeless elegance and security to your property with our aluminium doors. Perfect for HDBs, BTOs, condos, and landed properties, these aluminium doors are crafted to withstand the elements while providing durability. Our aluminium doors include sliding doors, swing doors, collapsible doors and basin doors.

Clients Reviews

“I engaged Top 1 Safety Windows to replace all the aluminium windows and doors in my house. The job was completed on time, and the after-sales service was excellent. The team was responsive and responsible, making the entire experience hassle-free.”

– Ms. Helena

“I had the pleasure of working with Mr. Chai from Top 1 Safety Windows for the installation of windows and glass in my two homes. The entire process was seamless, and everything was delivered on time as promised. His professionalism, attention to detail, and expertise were truly impressive. I am extremely satisfied with the results and highly recommend his services to anyone seeking quality workmanship and reliable service. Thank you, Mr. Chai!”

– Valerie

Products Showcase

Top 1 Singapore Safety Window

( Reg. No. : 53168817L     HDB LIC : HB-04-4658E )

7 Yishun Industrial Street 1
North Spring Bizhub #07-32
Singapore 768162
Tel: 8778 8111