Finvest
TGLS Building Products · Small cap · U.S. construction · Colombia manufacturing · Thesis updated July 2, 2026

Growth is strong, margins are the fight

01 Running thesis

Sales growth, margin test

Tecnoglass is still winning work in the U.S. In Q1 2026, revenue grew 12.0% to $249.0 million. The main driver was the U.S. commercial market, where revenue grew 20.4% year over year as the company worked through its project backlog.

The problem is profit. Gross margin dropped to 38.5% from 43.9% a year earlier. Management tied the decline to higher aluminum costs and a one-time double digit minimum wage increase in Colombia. Operating expenses also rose 19.8%, helped by higher personnel costs, a stronger Colombian Peso, and a $2.9 million Colombian wealth tax.

The bull case is simple: Tecnoglass has a low-cost production base in Colombia, strong U.S. demand, and a bigger U.S. footprint after buying Continental Glass Systems assets. It also plans to redomicile from the Cayman Islands to the U.S., subject to shareholder approval, which could make the story easier for U.S. investors to own.

The bear case is also clear. If 38.5% gross margin is the new normal, the stock is not just a growth story. It becomes a test of pricing power. The next few quarters need to show whether Tecnoglass can pass through aluminum, labor, and tariff costs without slowing orders.

May 2026▼Q1 2026 revenue grew 12.0%, but gross margin fell to 38.5% from 43.9%. Aluminum costs, Colombian wages, faster expense growth, and new tariff complexity made the profit story weaker.
Mar 2026→The 2025 10-K showed 10.5% annual revenue growth and stable gross margin of 42.8%. It also made the tariff drag clearer, including a $19.9 million operating expense headwind.
Feb 2026→Management pointed to about 11% revenue growth for 2026 and a record backlog, while also confirming margin pressure from input costs, currency, and mix. The company announced a plan to redomicile to the U.S.
Nov 2025▼Q3 2025 filings showed margin pressure from U.S. aluminum premiums, the Colombian Peso, and project mix. A new risk factor also raised the chance of political tension affecting trade between the U.S. and Colombia.
Nov 2025→Q3 2025 revenue reached $260.5 million, helped by U.S. multi-family and commercial work, but adjusted EPS missed consensus. Management also gave a first large cost frame for a possible U.S. factory.
Aug 2025▲Q2 2025 revenue grew 16.3% and backlog reached $1.2 billion. The same update showed a major tariff headwind, including an $8.2 million Q2 expense, but management began shifting sourcing and U.S. capacity to reduce the risk.
May 2025→Q1 2025 revenue grew 15.4% and gross margin improved to 43.9%. A new 10% U.S. tariff on imports from Colombia created a direct cost headwind, with a $4.7 million expense already booked.
02 Business model

Colombia cost base, U.S. demand

Tecnoglass turns glass, aluminum, and vinyl into finished building products. Most manufacturing sits in a 6.1 million square foot complex in Barranquilla, Colombia. That plant gives the company lower labor and production costs, while its main customers are in the United States.

The company sells to developers, contractors, installers, and builders. Its products go into hotels, offices, airports, hospitals, universities, homes, and apartment buildings. It can also install products on some projects, which can add revenue but may carry a different margin than manufacturing alone.

The model works best when U.S. construction demand is healthy, shipping runs well, and the cost gap between Colombia production and U.S. production stays wide. It breaks when tariffs, aluminum costs, wages, or currency moves eat the savings.

Tecnoglass is trying to lower that break risk. It has added U.S. assets through the Continental Glass Systems deal, shifted some aluminum sourcing to U.S. suppliers, and announced a plan to redomicile to the U.S. Those moves may lower trade risk, but they can also raise costs and add execution risk.

03 Product portfolio

What Tecnoglass sells

Cash cow

Architectural glass

This includes tempered safety glass, laminated glass, and double thermo-acoustic glass. These products are used in facades, windows, doors, handrails, and interior dividers.

Growth engine

Curtain walls and facades

These are large exterior systems for commercial and multi-family buildings. Q1 2026 growth was strongest in the U.S. commercial market.

Steady

Residential windows and doors

This business serves homes and single-family projects. In Q1 2026, U.S. residential sales were relatively flat year over year.

Cash cow

Aluminum components

Tecnoglass makes profiles, rods, bars, plates, and related hardware used in window manufacturing. Aluminum is also a major cost risk when prices rise.

Option

Vinyl windows

The vinyl window line started in late 2023. Management says it can more than double the company's addressable market and help it reach more U.S. single-family homes.

Option

Installation and U.S. service assets

Acquisitions such as ESW, GM&P, and Continental Glass Systems added distribution, installation, and U.S. production reach. These assets can help growth, but they also add operating complexity.

04 Business segments

Mostly U.S., mostly building projects

U.S. commercial59%growing fast
U.S. residential36%flat
Latin America and Caribbean5%growing fast

The mix is based on Q1 2026 revenue from the latest 10-Q. U.S. commercial revenue is derived from the disclosed 20.4% growth and $25.1 million year-over-year increase, while U.S. residential is the remaining U.S. revenue.

05 Risk factors

What could go wrong

Gross margin reset

High impact · Medium odds

Q1 2026 gross margin fell to 38.5% from 43.9% a year earlier. Higher aluminum prices and Colombian wage inflation were the main causes. If customers resist price increases, revenue can keep growing while earnings fall.

We watchGross margin in the next 10-Q, especially whether it moves back toward the 2025 level of 42.8%.

Tariff math gets worse

High impact · Medium odds

Tecnoglass sells mainly into the U.S. but manufactures mainly in Colombia. U.S. tariff changes under Section 232 now include a 10% tariff rate for products using U.S.-origin aluminum, which adds new cost questions. The company recovered $1.9 million of prior tariffs in Q1 2026, but that does not remove the ongoing risk.

We watchManagement's estimate of the net tariff cost after U.S. aluminum sourcing and any new U.S. trade policy changes.

Costs rise faster than sales

Medium impact · Medium odds

Q1 2026 operating expenses rose 19.8%, faster than revenue growth of 12.0%. The increase included higher personnel costs, a stronger Colombian Peso, and a $2.9 million one-time Colombian wealth tax. If this pattern continues, operating income can stay under pressure.

We watchOperating expense growth compared with revenue growth in each quarter.

U.S. residential stalls

Medium impact · Medium odds

The U.S. residential market was relatively flat year over year in Q1 2026. That matters because the vinyl window line is meant to expand Tecnoglass in single-family homes. If vinyl does not gain traction, one of the larger growth options weakens.

We watchU.S. residential revenue growth and any disclosure on vinyl window revenue or orders.

U.S. pivot costs more than planned

Medium impact · Low odds

The company is adding U.S. exposure through assets, sourcing, and a planned redomiciliation. Management also discussed a possible future U.S. facility, with prior comments pointing to a large capital project if it moves ahead. These moves can reduce trade risk, but they may also lower the cost advantage that made Tecnoglass special.

We watchShareholder approval for redomiciliation, U.S. facility commitments, and capital spending guidance.
06 Quick answers

In one breath

What does Tecnoglass do?

Tecnoglass makes architectural glass, windows, doors, and aluminum and vinyl components. Its products are used in commercial buildings, apartments, and homes.

Why does Tecnoglass depend so much on the U.S.?

Most of its sales come from U.S. construction customers, while most production is in Colombia. In Q1 2026, U.S. revenue was $237.1 million out of $249.0 million.

What is the main debate on TGLS stock?

The debate is whether strong revenue growth can turn into strong earnings growth again. Q1 2026 sales rose, but gross margin fell sharply because costs rose.

Why do tariffs matter for Tecnoglass?

Tariffs can raise the cost of selling Colombia-made products into the U.S. The company is using U.S. aluminum and adding U.S. assets to reduce this risk, but the final cost impact is still uncertain.