How To Cap Downspouts In 3 Steps

Depending where you are and how old your property is, a lot of humidity and dampness issues in basements are caused by waterflow issues in the drainage pipes.

Here at a property in Hamilton Ontario, the drainage pipes were totally blocked with shingle dust, debris, a lot of dirt compounded over the years. So as you can imagine being wet will be unsettling for the old drainage pipes under the property. 

How To Cap A Downspout In 3 Steps

How to Cap A Downspout In 3 Steps

Step 1: Cut The Downspout

It’s tricky if you don’t use the right tool. We use a Hacksaw as it get’s straight to the point.

In this case we’ve already done so. 

When it comes to the length, it’s your choice. It depends on the gradient of the ground around the property if you want to install a pipe or flexi pipe. 
Here we decided to make just enough room to fit an elbow.

Step 2: Cap Drainage

In this case we used a 4″ Rubber Cap, it fits nicely onto these 4.5″ Drainage pipe.

Depending on the size of the drainage pipe will depend on the size of the cap you need. And it doesn’t have to be rubber, a plastic one can be used too to fit inside the hole and silicon around the edge.

Step 3: Install Elbow

The final step is installing an elbow, depending on the downspout size you may need a certain type of elbow. For example a 2×3 has 2 different elbows that bend a certain direction.

In this case, we have a simple 3×3. Install is to whatever direction makes sense away from the property. Keep in mind of walkways and driveways, winter time can be pretty brutal.

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