Larnec

Weatherproofing External Doors

A stainless steel door handle on a weatherproof industrial door, ensuring durability and security in harsh environments
By Larnec
4 minute read

How to protect your commercial and industrial doors from harsh weather conditions

From cyclones and gale-force winds through to rust and water damage, industrial and commercial doors must withstand everything thrown their way. If they don’t, this can cause delays on-site, leading to more long-term costs for your operations.

Protecting your industrial and commercial doors on-site should be on your top list of maintenance priorities, and in this blog, we’re going to tell you why.

At Larnec, we understand the harsh environments that our industrial and commercial doors face daily, so we’ve put together some helpful tips to get the most out of your on-site doors. Read on to learn more.

The harshest environments for doors

Mine sites

The environment of a mine site presents incredible challenges to the durability and performance of doors. Frequent dust, dirt and mud can block flush seals, while loose debris and heavy equipment subject the door to frequent collisions and impacts that may warp or damage frames.

The humid weather conditions of most mite sites leads to the eroding of surfaces – especially doors. Doors suitable for these extreme conditions must use sufficiently robust and resilient materials, like aluminum or steel alloys with powder coatings for extra protection to protect against the elements, temperature fluctuations and corrosion.

A weather-resistant modular building with secure industrial doors, ideal for harsh environments.
 

Construction and building sites

Doors on a construction or building site face some of the most adverse conditions imaginable. Whether it be a sulfuric acid spill in a chemical factory or constant and extreme abrasive forces in a concrete processing facility, these doorways must endure environments that require robust and resilient materials.

Working with hazardous material day after day requires doors with stainless steel components, coatings to protect from corrosion and finishes that can withstand high temperatures. It is essential for safety reasons that these doors are highly reliable, as any damage to them could reveal areas of volatile and dangerous material.

Warehouses and workshops

Warehouses and workshops present some of the most challenging conditions for doors. These areas often feature extreme temperatures, shifts in humidity, high traffic leading to wear and tear, and possible impact from forklift damage. Many standard door materials, such as wood, need more strength and durability to endure harsh conditions like these effectively.

To overcome this obstacle, it is important that warehouses and workshops install doors specifically designed to resist the elements; industrial doors are a great choice as they are built specifically with durability in mind.

Upgrading to a colorbond finish with meta prep

One of the best weather-proofing options for industrial and commercial doors is to upgrade them to a colorbond finish called ‘meta prep’. Meta prep is a door prep finish designed to protect doors from harsh coastal conditions, especially salt and rust.

Rusting industrial doors

Industrial doors on the exterior of buildings can quickly succumb to the elements and rust over time. Rust can occur when iron, a predominant element in most industrial doors, is exposed to water and oxygen. This chemical reaction reduces the strength of the metal and accelerates aging.

Cyclone and wind-damaged doors

Industrial and commercial doors are typically designed to withstand the natural forces of wind. However, severe weather like cyclones can cause significant damage. Depending on the severity of the cyclone, up to 160km/hour, sustained winds can break windows, move structures, dent metal parts, and cause panels to buckle.

A weather-damaged industrial door, highlighting the importance of protective coatings and maintenance.
 

Tips to help increase the life of your commercial and industrial doors

Apply a protective paint layer

One great tip for protecting exterior doors from weathering is to ensure they have a protective layer of paint applied and that this paint is reapplied annually. Depending on each door’s direct sunlight, more frequent painting may be advised.

Apply a caulking sealant

Caulking sealants provide an airtight, long-lasting barrier around the perimeter of doors to ensure that no moisture can get inside and cause damage. When applying caulking to a door bottom seal, it is important to choose the proper type of caulk, as there are several varieties based on temperature rating, longevity requirements, and other factors.

Conduct frequent door inspections

Protecting industrial and commercial entryways from harsh climates involves frequent inspections and maintenance. Severe weather can cause excessive wear and tear on doors, resulting in costly repairs or even the outright replacement of components.

Any visible corrosion or unnatural wear indicators must be investigated during these inspections. Any issues identified during the inspection should be addressed with appropriate repairs or timely replacements, as further delay can compromise the safety and security of the building. Discover corrosion prevention strategies from the Australasian Corrosion Association (ACA).

Frequently asked questions

What is the best way to weatherproof an external industrial door in Australia?

The best way to weatherproof an external industrial door is to use a fully sealed door system with appropriate seals, thresholds, and durable materials.
Doors designed to support external applications typically include weather seals, tight-fitting frames, and corrosion-resistant finishes. This is especially important in exposed environments where wind, rain, and dust are common.

Do weatherproof doors cost more than standard external doors?

Yes, weatherproof external doors generally cost more than standard doors due to additional sealing and material requirements.
Costs can increase with upgraded seals, insulated cores, and finishes designed to withstand harsh conditions. However, these configurations are suitable for reducing maintenance and improving long-term performance in industrial environments.

Are weatherproof doors necessary for sheds, warehouses, and site buildings?

Weatherproof doors are highly recommended for sheds, warehouses, and site buildings exposed to the elements.
They are designed to support protection against water ingress, dust, and wind, which can impact equipment and internal conditions. In industrial applications, properly sealed doors can improve durability and operational efficiency.

What features should you look for in a weatherproof external door?

You should look for tight weather seals, durable door construction, and a properly fitted frame.
Additional features such as insulated cores, corrosion-resistant coatings, and threshold seals can be configured depending on site conditions. These elements are designed to support performance in external and high-exposure environments.

Can security doors also be weatherproofed for external use?

Yes, security doors can be weatherproofed when designed with the right seals and materials.
Many security door configurations are suitable for external use when combined with weather-resistant finishes and proper installation. This allows them to support both protection and environmental resistance in industrial or commercial settings.