If you’re considering the upgrade to a metal roof, then you’re likely curious whether or not it’s prone to mold build-up.
After all, once you’ve got a mold problem on your hands, it can be difficult, time-consuming, and expensive to fix.
In short, metal roofing can cause mold due to trapped water vapor. But there are ways to prevent, or at least reduce the risk of mold build-up.
So, this article will discuss everything you need to know about metal roofing and mold – helping you decide whether it’s the best roofing material for you.
It’s all about the installation
Typically, metal roofs should not cause mold. However, often, many contractors and roofing companies cut corners to save time and money. Unfortunately, the result is a no moisture barrier, causing a build-up of mold and rust.
Some contractors install brand new metal roofs on top of old asphalt roofing with no barrier for moisture or strapping. Therefore, when it gets hot or cold, the roof will sweat and the moisture has nowhere to go.
Now, you can install a metal roof on top of existing asphalt shingles, but this must be done correctly with room for the roof to breathe and what is known as a moisture barrier (alongside other specifications).
A metal roof showing signs of mold has likely already reached a stage beyond repair. Or, at the very least, a very expensive repair job (this is because the metal underneath has already rusted and the mold has spread).
How to eliminate the build-up of mold for your metal roof
Whether installed over existing asphalt shingles or not, there are various things you/a contractor can do to eliminate the build-up of rust and mold for your metal roof.
- Work with an experienced and reputable roofing contractor
- Ensure a waterproof membrane is installed
- The use of proper screws and washers prevents leaks
- Reduce condensation
We will now explain each of these pointers in more detail below.
Work with an experienced and reputable roofing contractor
Firstly, you should not try to install a metal roof yourself, unless, of course, you have the required experience.
Typically, you should look for a roofing company that specializes in metal roofing, such as the team at Jacob’s Ladder. Choosing a reputable company is a sure-fire way to ensure a quality job that will last.
If you’re unsure, you should ask for testimonials, proof of existing work, and a quote.
A good roofing contractor will know what they’re talking about, and this should come across in their communication.
Ensure a waterproof membrane is installed
As previously mentioned, a lack of a waterproof membrane is one of the main culprits when it comes to mold on metal roofing.
There needs to be space for the roof to breathe and disperse moisture correctly. If not, then you will suffer not only mold issues, but also rust. This is especially true if you live in a coastal area, such as near the beach where there is lots of saltwater in the air.
The use of proper screws and washers prevents leaks
Believe it or not, there are special screws and washers that should be used for all metal roofs.
These neoprene washers and special screws are not only more UV resistant than standard options, but also help protect against leaks. But these screws should only be installed in the high points at each rib and below the strappings.
It’s no secret that a build of water vapor and condensation causes mold. So, if we can eliminate, or at least reduce condensation, then we can effectively prevent a build-up of mold.
For a metal roof, condensation is better managed by insulating a roof, so panel temperature never reaches the dew point. Furthermore, other insulation options such as fiberglass are available to help keep the metal roof below the dew point.
Contact a professional to install your metal roof to prevent mold entirely
Having a metal roof does not mean you will have a mold problem. But if your roof is installed incorrectly, then you’re likely to suffer a series of problems, including rust, mold, and the build-up of other bacteria.
So, choose a reputable metal roofing contractor, and you’ll enjoy your brand new metal roof for years to come, all with little to no mold issues.
for Danville, KY
Got new roof for home and garage
Nettie - Danville, KY 40422
The whole team of Jacob's Ladder is fully committed to providing the best service for you. From quoting to invoicing and taking care of even the smallest of details like where to leave the satellite dish antenna. I'm really impressed with their level of attention to detail.
Thorough and caring
Daphne - Danville, KY 40422
The Jacob's Ladder team very thoroughly inspected the roof and carried out the necessary repair work with utmost care.
Awesome and professional job
Rodney - Danville, KY 40422
They did an awesome and professional job, glad I chose Jacob's Ladder Inc.God bless your family and business.
Jacob’s Ladder did a wonderful job on our roof
Jeff - Danville, KY 40422
Jacob’s Ladder did a wonderful job on our roof. We got a new roof in one day, and the price was well below the other estimates we received. Thank you for being so professional and helpful!
Kayleigh - Danville, KY 40422
We are very satisfied with the work!
Took a Load off My Mind!
James - Danville, KY 40422
I had a woman stop by in a car and give me a business card stating I had some missing shingles on my roof. I didn't see any but thought I might have a claim. Jacob's Ladder came out and checked it out for me. I ended up just needing some minors repairs. Sure am glad I had them take a good look!
Fixed my leak
Diana - Danville, KY 40422
I had storm damage from the recent tornado, and my roof was leaking in the utility room. Jacob's Ladder came out and fixed me up!
Valerie - Danville, KY 40422
We would highly recommend Jacob’s Ladder for your roofing needs. Our home was in need of a new roof before winter set in. Jacob’s Ladder walked us through every process to helping us with the insurance claim to explaining every detail regarding the roofing process. We also were given an additional recommendation for additional construction to have completed to coincide with the roofing process. We wanted to choose a locally owned company and their price matching was also an added benefit. Installation was fast and after completion, we were called to see if everything was completed to our satisfaction. A new roof is not something we were expecting to have to plan for but Andrea, Melinda, and Hugh made our process less stressful!
Melinda Beeding - Danville, KY 40422
Jacobs Ladder did an amazing job on our roof! They communicated well with us throughout the whole process! Can't beat their workmanship warranty either!
Our roof was done in one day!
Tracie - Danville, KY 40422
This company was amazing. Personable and professional. The roofing crew was polite and fast. Would of never thought our roof could be done in one day. Thank you