Insights

Certification updates from our factory and practical guides for buyers specifying aluminum windows, doors and curtain walls in the US and Canada.

CNC machining of aluminum window profiles at HIHAUS
Guides Why We Ask You to Sign Off Shop Drawings Before Fabrication

The single most common cause of window disputes is not manufacturing quality — it is a dimension nobody confirmed. Sign-off is the cheapest insurance in the whole order.

Oct 22, 2026
HIHAUS factory assembly workshop
Guides Inside Our QC: What Happens to Every Unit Before It Ships

Cutting, glass sealing, assembly, inspection, packing and loading — every step runs in-house, which is why we can tell you where a problem was caught rather than just that it was caught.

Oct 22, 2026
NFRC product certification document
Guides How to Read a Window Test Report: NFRC, AAMA, Intertek and CSI

Four acronyms appear on almost every window quotation. Here is what each one actually measures, and which questions to ask when a supplier sends you a PDF.

Oct 22, 2026
HIHAUS aluminum window and door assembly line
Company news CSA Group Testing Completed for Our Window & Door Systems

Testing of our aluminum systems by CSA Group has finished and the certificate is pending. Here is exactly what that means for a Canadian project — and what we can supply today.

Oct 22, 2026
New Equipment and a Big Day at HIHAUS: Back to Work for 2026
Company news New Equipment and a Big Day at HIHAUS: Back to Work for 2026

On 5 March we reopened for 2026 with two things that matter more than a ceremony: an eighth-generation showroom built around real project settings, and a 4.0 production line.

2026
IBS 2026 Orlando: Our Commercial Door and PTAC Window Line-Up
Company news IBS 2026 Orlando: Our Commercial Door and PTAC Window Line-Up

At the 2026 NAHB International Builders' Show in Orlando we showed two systems built around installation speed: an aluminum commercial door with three hinge options, and a PTAC window that removes the joint between fenestration and HVAC.

2026
U.S. Tariffs on Aluminum Windows and Doors: A Sourcing Guide
Guides U.S. Tariffs on Aluminum Windows and Doors: A Sourcing Guide

Duty rates get the headlines, but landed cost is decided by three things most buyers never check: the HTS classification, whether the aluminum content pulls the shipment into a Section 232 action, and whether the supplier can actually produce NFRC-tested product.

2025
World Champion Xu Xin Joins HIHAUS as Brand Spokesperson
Company news World Champion Xu Xin Joins HIHAUS as Brand Spokesperson

On 31 March, at the Poly Intercontinental Hotel in Foshan, world champion Xu Xin signed as our brand ambassador. Four co-branded products and a noise-reduction white paper were released at the same event.

2024
Wooden Door Maintenance: Five Things That Matter
Guides Wooden Door Maintenance: Five Things That Matter

Timber doors fail at the edges and the bottom rail, where water sits and where the finish is thinnest. Five maintenance habits that decide whether a door lasts fifteen years or forty.

2024

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