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Safe Way To Put New Siding Over Asbestos Siding

Putting new siding over asbestos siding can be pretty complicated. That’s why it’s important to know the proper way to do it.

What is the safe way to put new siding over asbestos siding?

You’ve to paint your asbestos siding. Then move onto adding the plastic sheeting. You’ve to nail the sheeting down on the exterior wall of your house. After that, start placing the foam board. Lastly, just install the new siding.

Now, this isn’t enough info to properly put the siding over the asbestos one. You’ll need details. And we’ve provided it.

Therefore, to place the siding over the asbestos safely, read along!

Why Is Putting a New Siding Over Asbestos a Good Idea

Now, asbestos siding has been used for a long time. However, asbestos siding is known to be pretty dangerous due to its dust.

This siding can dry up or get damaged over time. When that happens, you can have breathing problems due to the dust that leaks. Plus, inhaling asbestos dust for a long time can lead to lung disease.

Safe Way To Put New Siding Over Asbestos Siding 1

That’s why it’s better to replace the siding or cover it with a new one.

Now, replacing your asbestos siding can be quite costly. And this process needs a lot of work too.

Therefore, you can lean towards putting a new siding over it. And we suggest using vinyl siding.

You can choose either Dutch lap or straight lap vinyl siding for yourself. Both of them are strong and long-lasting.

So, let’s see how you can put the new siding over your asbestos one!

5 Steps on How to Place New Siding Over Asbestos Siding Safely

Yes, we’re aware that we’re only talking about vinyl siding. But you can use another siding too. You’ll have no major problems if you do so.

However, you need to follow some steps. And don’t worry! These steps are the same for all the sidings.

So, let’s take a look at them quickly!

Step 1: Prepare the Necessary Tools

Grabbing the tools is the first step towards any work. Thus, get the tools that are needed for covering your asbestos siding.

To help you, we’ve mentioned the essential tools down below:

Now, for a new siding, make sure to choose the best one. For example, you can use vinyl or wood siding.

Step 2: Start Painting Your Asbestos Siding

Well, you might think we’re being absurd. Because painting might not seem like an important part of the covering process.

As you know asbestos siding is pretty hard. But it can flake at some point. And this causes health hazards.

However, painting can help you avoid asbestos dust. Because it keeps the siding from getting damaged. Plus it helps to contain the dust if the siding breaks.

Now, you’ve to use paint that’s waterproof. It should also be mildew and mold resistant.

To paint the asbestos, we suggest using a paint sprayer. Because this way, you’ll be able to finish the work quickly. And you’ll also get evenly painted asbestos siding.

For painting inside cracks and under shingles, grab a natural hair paintbrush.

Now, if you’re done with painting the first layer, let it dry completely. Then add the second layer. Lastly, just allow the paint to dry and prepare yourself for the next step.

Step 3: Add the Plastic Sheeting

Now, placing plastic sheeting between the two sidings is pretty useful. Why?

Well, this way the new siding won’t rub against your painted asbestos siding. Because the sheets will create a barrier between the two sidings.

Therefore, start with the top exterior wall of your house. Use the top edge of the sheeting for this part.

Start nailing down the sheeting with a hammer till it’s completely attached. Now do the same for other edges too.

However, if you’re using multiple sheets, remember to not let them overlap. Just nail them carefully down the seam.

Now, keep heading towards the bottom of your wall. Once you’re there, try using a shovel. And excavate that area to let the sheeting cover more of your wall.

Lastly, trim off the excess sheeting. You can use the same sharp utility knife that’s used for cutting asbestos siding.

Step 4: Place Foam Board

A level surface is essential if you’re installing new siding over another one. That’s why we suggest using a foam board.

Therefore, start measuring and cutting the foam board.

Now, it’s best if you use waterproof foam boards. Furthermore, the board should also be mold and mildew-resistant. So, on that note, here are some of our favorites:

UCREATE Foam Board, White, 22″ x 28″, 5 Sheets Check Latest Price
Mat Board Center, Pack of 10 Foam Boards, 11×14 inch Check Latest Price

Therefore, pick your foam board and start covering the wall.

Now, put the board on your wall and start screwing it in place. Attach the foam board to your asbestos siding by using galvanized screws.

You’ve to use the screws at the corners at first. Then every 2-3  inches to secure it in place.

However, there are some foam boards that have adhesives to them. So, in that case, you can just cut and stick them to your exterior wall.

Step 5: Install the New Siding

Finally! It’s time to install your new siding. Till now, you’ve worked pretty well. And we’re proud of you for that!

How to install the new siding?

Well, it’s pretty simple!

You’ve to attach the siding in place with corrosion-resistant screws, nails, or staples. Once you’ve got the tools for the installation process-

Carefully attach the sidings from the top to the bottom of your home. And that’s all!

Now, just like insulating ductwork in your basement, this job can be tough too. In that case, you can always call a professional.

They’ll safely put the new siding over your existing asbestos one in no time!


Question: Can I cover asbestos siding?

Answer: Yup, you can. Asbestos siding gets damaged with time. And that’s dangerous for you. Therefore, try covering the siding with a new one to keep yourself safe.

Question: How much does it cost to put new siding over asbestos siding?

Answer: Well, firstly, the expenses for painting the asbestos siding will be around $700 – $1,000. Then vapor barrier or plastic sheeting will be almost $1,000. Insulation or foam board will cost you $1,500 – $1,900. Lastly, the expenses for installing new siding will be $4,500 – $15,000.

Question: Can I put vinyl siding over asbestos siding?

Answer: Yes, you surely can. Vinyl siding is a great choice. It’ll definitely keep the house safe for years. Thus, do place vinyl siding over the asbestos one.


Well, that’s all we had on a safe way to put new siding over asbestos siding. Hopefully, you’ve understood all the steps.

Which siding did you use over the asbestos one?