How To Soundproof A Metal Roof

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The tinny noise of rain hitting metal is as soothing as it is irritating. This is even more apparent when the sound is bouncing around your own house.

In the majority of modern housing, metal roofs are becoming the most sought after choice. They are even becoming common amongst those simply seeking to replace an existing roof due to low maintenance and replacement costs. It is definitely not hard to see why they are so sought after!

So why is it that every household does not yet have a metal roof on their home if they are so effective? Are metal roofs actually noisier than the typical roof?

This article will look at several popular methods of soundproofing a metal roof at a variety of prices, so you do not have to do all the research yourself. 

How to Soundproof a Metal Roof

Why Choose A Metal Roof?

Metal roofing can be supplied in a variety of different looks and finishes, ranging from domestic housing to commercial properties.

They have become favored amongst homeowners for several qualities, namely their ability to resist fire and their quick installation window. If you are building to a shorter deadline, metal roofing is definitely the best choice for you.

Aside from these amazing qualities, metal roofs are much more durable than the typical roof. On average, they can withstand up to 50 years of weather and environmental beating before needing to be replaced.

They generally require much less maintenance and repair work than a small shingle, meaning your life will be made that much easier by introducing metal into the exterior of your home. A metal roof is also considered to be a much more environmentally friendly option than other roofs.

How To Soundproof A Metal Roof 

There are several common metals used for metal roofing such as aluminum, steel, copper, and corrugated metal. How many methods are there to soundproof a roof, you might ask?

The simple answer: quite a few. 

Some of these tried and true methods are easier to carry out than others and more cost-effective, but they all have their advantages and positive benefits.

Complicated and expensive methods will not always achieve the best results. It is important to understand the difference between what is actually effective, and what is not. 

Benefits Of A Metal Roof

Some of the most evident benefits of having a metal roof include:

  • A greater environmental impact. The colder the temperature is in the building below, the more energy that will be utilized to heat it
  • A reduction in overall costs (specifically energy bills)
  • Will increase house value
  • Will provide better comfort, especially in bad weather
  • Rigid foam insulation

Choosing The Best Metal

It goes without saying, but the type of steel roof that you choose to have installed could be a great factor in impacting the amount of noise that is carried throughout your house.

The main thing to keep in mind when attempting to soundproof a metal roof is that the loudness of the sound has everything to do with the consistency of its material.

The higher and more complicated the quality of the metal roof, the stiffer it will be. As it will vibrate less, it will automatically reduce noise levels for your comfort. 

Another thing to consider regarding a noisy roof is not only the shape of the metal, but the overall quality of the steel. The stronger and more complex a metal roof quality is, the stiffer the roof material will be, and that will play a significant role as to how much the roof might vibrate.

  1. There is corrugated roof covering, which could be a noisier option. However, this is not locally produced and could be harder to get hold of. It also tends to shake a lot more than level roofing during spells of bad weather. 
  1. With high hopes of reducing the level of noise produced by your roof, you could consider a flat or standing seam metal. These types of roofing are installed flush to the roof deck and generally create less resonance than other materials – especially on stormy nights! 

While the shape of the metal versus a flat metal profile may have some impact on noise levels, it’s the stiffness, strength, and quality of the material that is especially influential on how noisy the roof will end up being.

Maintaining Your Roof

It is extremely important to make sure that your metal roof stays in the best condition possible, which is usually indicated by its coloring. If it looks faded and dull, and it is creating an obscene amount of noise, you should prepare yourself to have your roof replaced. 

By using regular maintenance to soundproof your metal roof, a lot of emphasis is placed upon the quality of materials used. Your roof and any installed fasteners expand and contract with temperature fluctuations throughout the year.

This causes movement within the roof itself and could loosen the fasteners, increasing the noise level as a result. Therefore, you must make checking your roof an essential part of your working week. 

By taking a walk around your property on a regular basis and noting any minor changes you notice, you will be more likely to catch sight of damaged panels before they have the chance to become a nuisance. 

Ensuring The Roof Is Positioned Correctly

Hailstones and stormy weather leave a much larger impact on a metal roof that is not installed properly, so definitely make sure to leave this job to the professionals.

A loose tin roof will likely shift and move during such extreme conditions, causing an even louder noise as it bangs and rubs against other parts of the house. It is also a good idea to look at the fasteners on your roof and check that they are correctly installed.

However, if they are not, the solution is simple. Just tighten the fasteners you have or replace them if they are faulty! There is not much else to it. 

Soundproof a Metal Roof

Roof Underlayment

In addition to keeping personal tabs on the positioning of your roof, you must also have a roof underlayment installed – otherwise, you will never be able to get the repetitive sound of hail and raindrops slamming against your roof out of your head.

Roof underlayment is a water-resistant barrier that is installed directly onto your roof deck, usually made from nylon filaments and foam insulating panels to keep heat sealed within your home and expel any bad air.

It serves several key purposes, one of which is to add an extra layer of protection to your roofing to prevent extreme weather from damaging your property. 

Prior to installing the metal roof, an official underlayment needs to be installed. The process of adding this layer to your roof will significantly decrease the level of noise created by the metal being directly exposed to the elements.

This is an action that needs to be taken throughout the installation of the metal roof. If your roofing system is mounted without an appropriate roofing system underlayment, you will certainly experience the type of noise that tends to give metal roofs a bad name.

However, with proper materials creating a barrier of silence between the metal and you, there is no need to stress over having a metal roof!

Using Ceiling Insulation

The best you can do to reduce the noise is to put as much physical barrier between yourself and the exterior metal surface.

A good piece of advice to help in soundproofing a metal roof is that if you don’t have a ceiling cavity, then you should create a false ceiling. This should then be filled with foam insulation (panels or spray) and covered with soundproof ceiling tiles. 

A barrier with a higher density between your roof covering, and your attic means that you will automatically limit the noise pollution generated by the metal roof.

One means in cutting down on the noise is to mount insulation. This is a task that is usually carried out retrospectively, as it is not a necessary requirement when a roof is initially installed with the right kind of roof underlayment.

You should also install a resilient channel onto an existing finished ceiling. A resilient channel will leave an air gap between the insulation and the ceiling, which will provide peace of mind concerning noise reduction.

Using Attic Insulation

Though there are many factors that go into soundproofing a metal roof, it is the issue of attic insulation that causes the most problems.

Arguably, having a large volume of well-installed attic insulation is by far the most highly-regarded and cost-effective method of softening the harsh clanging sounds that may be created by your metal roof.

Typically, the creation of these noises has a lot to do with harsh weather reverberating against the metal, such as torrential rain and hailstones.

As a result, there are a few key products and methods of attic insulation that are being offered on the market right now. They will not put a huge dent in your wallet, but will still help you to achieve the effective results that you desire. 

  • Spray Foam

Using spray foam is a simple DIY task that is straightforward for even the most inexperienced individual. When applied, the self-adhering product expands and fills every curve, gap, and crevice in its intended area, before setting as a solid to form a protective seal around your home.

This structure immediately locks in heat and begins preventing noise from traveling through the rest of the house. It can be installed on old or new metal roofs without causing disruption or the need for re-roofing and does an excellent job of preventing condensation, insect infestations, and excess noise pollution.

  • Blanket Insulation

This method of insulating your attic offers an increased rate of thermal resistance for the whole house. It is one of the most common types of insulation for walls and attic floors; however, it must not be used in wide open spaces.

If it is exposed to this environment, the risk of fiberglass particles affecting the air quality in your home is greatly increased. Additionally, when installing blanket insulation, is it absolutely vital that you wear a breathing mask and protective gloves to prevent irritation of your lungs and skin.

You must cut the pieces to fit snugly between the gaps in wooden frames, pipes, and any other obstacles in your way. Overall, this method of insulation is perfect for small, dark settings like your attic.

However, whilst blanket insulation is one of the most inexpensive and easiest ways of ensuring your metal roof is as soundproofed as it can possibly be, it still is not as effective as spray foam insulation.

If your attic is left uninsulated, then you should start there. Installing a form of reduction insulation or spray foam is a great place to begin the process of soundproofing your metal roof.

However, both of these methods of attic insulation will also help to create a physical barrier between the noisy roof and the inside of your home. 

Using Sound Deadening Paint

It is not a very well known fact, but you can actually buy sound restricting paint to help soundproof your house. How peculiar is this?

After executing one or more of the above steps, it might be a good idea to turn your attention to using sound-limiting paint in rooms situated closest to the attic. Though this might appear to be a less effective method than using roofing felt or foam insulation, the total power of soundproof paint lies in its thermacels.

Any soft pigment stored inside the cells acts a bit like the suspension of a car. It is prone to ‘wobble’ when the sound waves hit it, but then absorb the sound energy as a result. This means that significantly less sound energy is transferred through the walls.

This method is also quite cheap and does not require the interference of a professional. To increase its impact, you should use at least three layers and ensure each coat you apply is as thick as possible.

Seek Professional Advice

Finally, the most effective way to soundproof your metal roof is to obtain advice from a professional within this field. They will be able to point you in the right direction, so you do not end up overspending on products that will not truly work.

Summary

You must take special care of the overall construction of the roof by considering design materials, cost competitiveness, and whether you want your metal roof to achieve its full lasting potential.

Therefore, to fully soundproof a metal roof, it is vital that your house is equipped with a solid roof covering and a good attic insulation foundation so that sound will not live in the air longer than necessary.