Why Your Gutters Might Be Destroying Your Crawl Space

Chris Burdette • July 25, 2026

When that customer asked us if they should really seal up their vents, they weren't being difficult. They were being careful. They wanted to understand what they were agreeing to before they agreed to it.


That's exactly the right instinct.


The answer just happens to be different than what most people expect. Sealing your crawlspace vents — when it's done as part of a proper encapsulation — isn't risky. It's the point. It's what makes everything else work.


Building science caught up to this a while ago. We just don't always get the memo as homeowners because nobody sits us down and explains it.

A crawl space with spray foam insulation on the rim joists, white vapor barrier walls, and a black ground liner.

It All Starts With the Rain

Most homeowners never connect these two things. Your gutters are a roof thing. Your crawl space is a foundation thing. They're on opposite ends of your house and they seem like completely separate problems.


But they're not. And understanding why could save you from a very expensive surprise.

Every time it rains, water runs off your roof and into your gutters. That's what gutters are designed to do — collect that water and move it away from your home.


The key word is away.


When gutters are clogged, damaged, or draining in the wrong spot, that water doesn't go away. It goes down. And it lands right at the base of your foundation.


That might not sound like a big deal. But it is.

What Happens When Water Sits at Your Foundation

Your foundation isn't a perfect seal. Most homes in Central Illinois are built on block foundations. Block has gaps. Block has cracks. And water is very good at finding both.


When water pools at the base of your home over and over — after every rain, every storm, every spring thaw — it starts to work its way in. Down the footer. Through the block. Into the crawl space.


And here's the part that makes this so dangerous: you can't see any of it happening.


By the time you notice something is wrong, the water has usually been doing its damage for a long time.

The Sign You Might Have Already Noticed

Here's something worth paying attention to.


If you've seen a cracked corner inside your home — on the drywall, near a door frame, along the ceiling — your first instinct might be to call a foundation company or assume the worst.


Before you do that, go outside and look at your gutters.


Specifically, look at where they drain. Follow the downspout. Where does the water actually go when it leaves your gutter system? Is it dumping right up against your house? Is the ground sloping toward your foundation instead of away from it?


A cracked corner inside your home can be one of the first visible signs that water is getting where it shouldn't. And a lot of the time, the source of that water is standing right there on the side of your house.

A crawl space with white plastic vapor barrier covering the ground and wrapping around the support pillars and walls.

What to Look For When You Walk Your Property

You don't need any special tools or knowledge to do this. Just walk the perimeter of your home after the next rain and pay attention to a few things:


- Where are your downspouts discharging? If the water is landing within a few feet of the foundation, that's worth addressing.

- Is the ground pulling away from the house or pushing toward it? Water should always drain away from your foundation, not toward it.

- Are there any low spots where water is pooling near the house? Standing water near the foundation is never a good sign.

- Are your gutters overflowing anywhere? Overflow usually means the water is running straight down the side of the house and into the soil at the base.


None of these things automatically mean you have a crawl space problem. But any of them could be feeding one - quietly, slowly, and out of sight.

Why Catching This Early Matters

The further water gets into your home's system, the more it costs to fix.


A gutter correction or a downspout extension is a small fix. Crawl space encapsulation is a bigger investment. Structural repair is a much bigger one.


Most of the crawl space problems we see in Central Illinois didn't happen overnight. They happened over years of water finding the same path over and over again. The homeowners who catch it early — the ones who made that simple walk around their property — are the ones who get the best outcome at the lowest cost.

Book A Free Inspection Now

Your crawl space problems aren't going to fix themselves. But they are fixable. Let's get it done — the right way, permanently.

Or call us directly (217) 863-9559

Not Sure What You Found?

If you did that walk and something looked off — or if you've been noticing signs inside your home that you can't quite explain — we're happy to take a look.


We'll come out, do a thorough inspection, and show you exactly what we find. No pressure. No scary sales pitch. Just an honest look at what's going on so you know where you stand.


That's how we do things at My Guys.

Based in

Mahomet, Illinois Serving all of Central Illinois.

Business Hours

Mon Fri - 8am to 5pm

Sat Sun - Closed

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Text overlay: “Day 3 walking through a completed crawl space job” over a bright crawl space interior

Day 3: Walking Through a Completed Crawl Space Job

By Jeff Robinson • August 1, 2026
It's a little after 4 PM on day three, and we're wrapping up this crawl space encapsulation job here in Central Illinois. Piers are wrapped. Floor's sealed. Sump pits are swapped out. Everything's spray foamed. The work's done, and it's done right.
Damaged crawl space with torn insulation and dirt, overlaid text:

Contractor Disappeared Before The Crawl Space is Done

By Jeff Robinson • August 1, 2026
So we're working on a crawl space here in Fairmount, and I wanted to introduce you to the contractor who started this job. Everyone, meet George. George is a turkey. Literally. All jokes aside, this crawl space is a perfect example of something we see way too often: a contractor came in, started the encapsulation work
Crawl space encapsulation graphic with before-and-after phases and moisture barrier installation shown in sections

Inside a Crawl Space Encapsulation: The Phases That Happen Before the 'After' Photo

By Jeff Robinson • July 31, 2026
That's Ryan giving you a tour of a crawl space job we're working on right now outside Mahomet. Debris is already hauled out. Lights are already hung. Trenches are dug for the drain tile. The crew's in the middle of it.