Can House Wrap Get Rained On? Debunking Weather-Related Myths

Are you planning a construction project soon? If so, then you know how important it is to have a reliable and durable house wrap.

After all, it serves as a protective barrier between the exterior siding and the sheathing of your structure.

But can it withstand the unpredictable outdoor elements, particularly rain?

This is a crucial question that needs to be addressed, and we're here to help you find the answers!

In this article, we'll dive into the world of house wraps and explore their effectiveness in preventing water intrusion and damage.

We'll discuss the various factors that can influence their performance such as installation techniques and environmental conditions and reveal some surprising insights that might just change the way you think about house wraps.

So, whether you're a seasoned contractor or a DIY enthusiast, you won't want to miss this informative and engaging read.

By the end of the article, you'll have a better understanding of the true resilience of house wrap in the face of rain.

With this knowledge, you'll be better equipped to make informed decisions about your construction projects. So, let's get started!

A huge house underconstruction coverd in house wrap, Can House Wrap Get Rained On? Debunking Weather-Related Myths

Can House Wrap Get Rained On?

Yes, house wrap can get rained on. However, house wrap is designed to be water-resistant, not waterproof.

This means that while it can withstand some amount of rain, it is not completely impermeable to water.

It is important to note that the effectiveness of house wrap in preventing water intrusion and damage can be influenced by various factors.

Examples of these are installation techniques and environmental conditions.

For instance, blowing rain can easily get behind the house wrap since the siding is not yet installed.

To ensure maximum protection, it is recommended to follow proper installation procedures.

It is also best to use additional drainage layers, such as a rain screen, to collect and drain rainwater.

A two storey house covered in house wrap

How Long Can HouseWrap Be Exposed?

House wrap serves an essential role in any building project.

Providing a barrier against moisture and other elements that could compromise the integrity of a building's structure.

While it safeguards your home from detrimental factors such as wind and rain, one might wonder, can house wrap get rained on itself?

The fact is, house wrap can indeed get rained on during the construction process, but there are limits to its exposure.

When exposed to sunlight, the ultraviolet (UV) rays may break it down, making it less resistant to tearing and water.

Furthermore, heavy winds and accumulation of dirt beneath the house wrap may weaken its moisture-resistant properties.

When it comes to rain, house wraps like Tyvek are designed to protect against water penetration and simultaneously allow water vapor to escape.

This prevents moisture from getting trapped within the walls, which could lead to rot and compromised structural integrity.

However, if the house wrap has been perforated or comes in contact with wet wood, it may potentially allow leakage.

An essential factor to consider is the duration of house wrap exposure.

If left exposed for too long, it can incur significant damage due to UV exposure, which would consequently reduce its overall effectiveness.

As a result, it's crucial to install siding as soon as possible after applying the house wrap to minimize potential harm.

House Wrap Strength And Functionality

How Strong Is House Wrap?

House wraps are designed to be durable and can withstand various weather conditions, including rain.

They protect your home from moisture infiltration, such as rain, sleet, and snow.

Different house wrap options on the market offer various tensile strengths, ranging from around 51 lb/in (MD) or 40 lb/in (CD).

While on higher-performing wraps, expect them to have up to 80 lb/in MD and 87 lb/in CD. This ensures your home's sheathing remains well-protected.

Does House Wrap Stop Wind?

Yes, house wraps are effective in stopping wind infiltration.

This helps prevent wind and rain from penetrating your home's exterior cladding, maintaining a comfortable living environment.

How Many Layers Of House Wrap Do I Need?

In most cases, one layer of house wrap is sufficient to protect your home. Adding extra layers may seem like an effective way to reinforce protection.

However, it is essential to ensure proper installation of the house wrap.

A huge house under construction covered in house wrap

This will avoid issues like ballooning caused by staples and can reduce its ability to prevent air leakage.

A correctly installed house wrap should create an integrated gap and drainage plane to resist bulk water, providing adequate protection.

Pros And Cons Of House Wrap


House wrap has several advantages, including its lightweight, ease of installation, and permeability.

It helps to prevent moisture from entering the wall cavity, which is crucial in maintaining a healthy building environment.

By allowing air to flow through the material, house wrap aids in the evaporation of trapped moisture, reducing the risk of mold formation.

In addition to providing a weather-resistant barrier, house wraps can serve as an energy-efficiency solution.

They help to maintain a stable indoor climate by reducing drafts and preventing air leakage.


Despite the benefits, house wraps have some drawbacks.

While offering moisture protection, they must be surfactant-resistant to prevent water from entering the wall cavity.

Improper installation or damage to the wrap may result in moisture issues and consequent mold growth.

Another concern is the potential cost. For some homeowners, installing house wrap may be an additional expense they prefer not to invest in.

Is House Wrap Good For The Long Term?

The effectiveness of house wraps in the long term largely depends on the quality of the material and the installation process.

When installed correctly and maintained, they can offer long-lasting protection for your home.

However, improper installation or insufficient maintenance can compromise their performance.

This may result in issues such as moisture infiltration and mold growth.

Ultimately, the decision to use house wrap comes down to personal preference, budget, and climate.

Understanding the pros and cons will help guide your decision-making process.

How To Properly Do House Wrap Installation?

House wrap is crucial in protecting your home from moisture and preventing other issues like wood rot, mold growth, and flooding.

To ensure your house wrap is effective, proper installation is key. Let's dive into some important steps to properly install house wrap on your construction project.

Tyvek house wrap

First, start at the bottom of one end of the wall with the printed side facing out.

Building wrap should be installed from the foundation upward, overlapping joints by at least 2-4 inches.

Remember, the higher course should overlap the lower to maximize protection.

When it comes to windows and doors, be mindful of the details.

Use flashing tape to seal the sills, and carefully push tape tight into corners without puncturing it.

Smooth tape application is achieved with tools like a square block or a J-roller.

Secure the house wrap using proper fasteners such as cap nails, cap staples, or plastic cap fasteners to keep it in place during the installation process.

It's crucial to follow the manufacturer's guidelines on fastener spacing to ensure a sturdy attachment.

Efficient installation around windows and doors requires careful attention.

Make diagonal cuts at window corners and fold the flap up to create a tight seal.

Properly seal these openings by taping all seams and edges, preventing air leaks and moisture infiltration.

Lastly, remember: quality matters. Choose a tried and tested house wrap that offers both durability and breathability.

House Wrap Maintenance Tips

A huge house under construction covered in house wrap

Proper maintenance of your house wrap is essential for keeping your home protected from the elements.

Follow these useful tips to ensure your house wrap stays in top condition.

First and foremost, inspect your house wrap regularly. Checking for damage after storms or during routine home inspections can reveal issues early on.

Keep an eye out for tears or punctures, as these can compromise the barrier.

Small damages can be patched easily with a horizontal slice and some overlap to ensure coverage.

Ensure proper drainage is in place behind your siding materials.

You should install horizontal strapping, for example, using spacers to allow water to drain and air to flow freely.

Take note of the house wrap's UV exposure rating. Leaving it exposed to sunlight for longer than recommended can weaken its performance.

Rain doesn't spell disaster; rain can drain between unfinished siding and house wrap without significant issues.

Just ensure your wrap is water-resistant and breathable.

In conclusion, the key to an effective house wrap lies in regular inspection, addressing damages, and ensuring adequate drainage.

Check out some of our previously written articles below:

Typar Vs Tyvek Which House Wrap Is Best?

Can You Staple House Wrap?

A huge house underconstruction coverd in house wrap, Can House Wrap Get Rained On? Debunking Weather-Related Myths

A huge house underconstruction coverd in house wrap, Can House Wrap Get Rained On? Debunking Weather-Related Myths

A huge house underconstruction coverd in house wrap, Can House Wrap Get Rained On? Debunking Weather-Related Myths

A huge house underconstruction coverd in house wrap, Can House Wrap Get Rained On? Debunking Weather-Related Myths

A huge house underconstruction coverd in house wrap, Can House Wrap Get Rained On? Debunking Weather-Related Myths

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