One of the biggest challenges in metal roofing installation is fastening the screws correctly. It can make your roof either tight or the leaking one. So, installing the screws with utmost care is very important.

At the beginning of any roofing installation, you need to do an inspection and plan your work. This article will help you solve some questions related to the topic or at least have an idea about them.

The planning process also includes coming up with an answer to these questions such as what are the roof shingle materials, where do you put screws in metal roofing, what are the weather situations and protective measures you must ensure in your home, etc. 

Let’s start the discussion about where to put screws in metal roofs.

Where Do You Put Screws In Metal Roofing

Your metal roof will have a large number of screw penetrations. It is quite often that screws are not initiated perpendicularly, either too firm or too loose. When such a thing happens, it can create a hole point in the screw penetrations eventually causing water leakage. 

There is no hard and fast rule where you should put screws in your roof. After the initial planning of your work and taking care of insulation and other things, you can proceed to screw in your metal roof. 

Now, you may chalk out a line in your metal sheets where you want your screws to be. Then, draw points on equal intervals from one side of your sheet to the other side. Using a screw gun, set all the screws in the right place.

Where Do You Put Screws In Metal Roofing

Why screws are used in metal roofs

Any type of screw is used in roofing to securely hold the roof in place So that it does not leak or have any vulnerabilities.

Screws are put down where the metal sheets overlap in the normal situation. Sometimes screws can be of great help when the sheets are coming to an end and or attaching them to the underneath insulation or substances. 

Required tools

Using the right tool is an essential step to prevent maintenance issues and roof failures. The use of an actual screw gun is highly appreciable.

With the help of an adjustable clutch and depth-sensing control of the actual screw gun, the torque can be adjusted. Variable-speed screw guns are the best option in this case to match the speed of the drill with the screw type. 

The setting of 2500 RPM is used for wood and steel substrates that are less than 0.25 inches thick. The setting of 2000 RPM is used for heavier versions.

How to install screws in metal roof

In the majority of situations, a metal roofing screw with a rubber washer and metal cap is used. With the help of a screw gun, the screw is torqued down to the panel.

metal roofing screw with a rubber washer and metal cap
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metal roofing screw with a rubber washer and metal cap
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Make sure to check after the drill operation if the washer is blown out or cracked anywhere. That’s because any cracking on it can create water leakage into your roof.

Sometimes using pre-drill screws can save you a lot of time and produce a better installation. Pre-drilling also has some benefits. It helps to guide the screw into the substrate. It ensures straight screw lines at perfectly spaced intervals. 

The best process is to attach your screw with your screw sun and then drill it. In such a case, the screw is stopped after installation and proper water sealing can be ensured. 

Tips and tricks 

The metal cap has to be a little larger than the rubber washer in a screw. While tightening the washer, you must be careful about not putting too much pressure. In this procedure, you must ensure that the rubber washer efficiently spreads to the metal cap. 

If you have put too much pressure and over tighten the screw, do not panic and stay calm. Just roll the screw backward to release some pressure.

It is very simple to check an under-tightened screw as you just need to roll the washer a little bit forward. And if it rolls, then you have already tightened it. 

Again, while installing screws, it should be kept in mind that to place them perpendicularly, not inclined to the surface. Sideway installed screws are tilted and will not permit the washer to stop the water leakage properly.  

Final words

Your metal roofing screw can fail due to improper installation. It is better to always pay extra attention to that matter along with, where do you put screws in metal roofing.

Hopefully, you’ve enjoyed reading this article and knowing all the information about screwing in metal roofs.


As a civil engineer and roofer, I love to share the experience that I have gained through the last couple of years. In the roofing industry, practical experience is a very crucial fact that can help you a lot. Hence, I want to help you with my blog.

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