What is the Frost Line in Maryland?

If you are considering adding a deck onto your home in Maryland, there are some things you’ll need to take into consideration when planning. One of these things is the frost line. But what is a frost line? And what does it have to do with building a deck?

Let’s look more closely at what a frost line is, what the frost line is in Maryland, and at how it can impact your deck plans.

What is a Frost Line?

The frost line is the depth at which water will freeze underground. This means the depth at which moisture in the soil will freeze and crystallize. The frost line is also often referred to as the frost depth or freezing depth. Frost depth varies from location to location based on the average winter temperatures. Frost depth can also vary based on soil composition and the soil’s ability to transfer heat.

Where is the Frost Line in Maryland?

In Maryland the frost line depth is thirty inches. This means that at thirty inches and below underground water will no longer freeze during extremely cold temperatures. This is determined based off of the average temperatures as well as the soil composition in the state.

How Does the Frost Line Affect Deck Building?

In Maryland, frost depth means that all footers and foundations need to be at least thirty inches below the surface level of the ground. Because water expands and contracts as it freezes and melts, footers and foundations need to reach below the frost line for extra security. If foundations or footers are built above the frost line they could be susceptible to water damage and shifting. This poses a safety hazard and could greatly impact the lifespan of your deck. In Maryland some building regulations vary by county, so when building a home or deck it is important to use an experienced contractor who is familiar with the ins and outs of Maryland building regulations.

If you are planning to add a deck onto your home there are many things you have to consider. By working with a skilled professional you can rest easy knowing your deck will meet all safety standards and regulations. From the decking to the footers we are determined to build you the best deck possible. If you are ready to get started on your deck, give us at North American Deck & Patio a call today!

“Jim at North American patio and deck's came up with the most ingenious way of utilizing our small very slanted very water drained environment and turned it into a virtual oasis. Making this deck the envy of all our ambitions and gem for the community.”

– C. Cross