Three Common Mistakes When Building a Temporary Shelter - How to Fix Them

When the siren wails and the sky turns a bruised gray, you’ll wish you’d spent a few minutes thinking about shelter before the wind started rattling the windows. A makeshift shelter can be the difference between a night of dry sleep and a morning of soaked clothes, bruises, and a broken spirit. Below are the three most common slip‑ups I’ve seen in the field, and exactly how you can avoid them.

Mistake #1: Ignoring Site Selection

Why the ground matters

The first thing most people do is grab a tarp, some rope, and a couple of poles, then set up wherever there’s room. In a hurry, it’s easy to forget that the ground you choose can either support your shelter or turn it into a sinkhole. Wet soil, low‑lying depressions, and areas under trees are all red flags.

Wet soil loses its load‑bearing capacity quickly. A shelter that feels solid at first can collapse as the soil softens.
Low‑lying depressions collect water. Even a small amount of runoff can flood the interior within an hour.
Trees may look like natural windbreaks, but they also attract falling branches and can be uprooted in strong gusts.

How to pick the right spot

Elevate – Look for a rise of at least a foot above the surrounding terrain. If you’re on flat ground, create a small berm with sandbags or a tarp rolled into a ridge.
Check drainage – Walk around the chosen spot and pour a cup of water. If it pools, move on.
Avoid overhead hazards – Stay clear of dead or leaning trees, power lines, and any structure that could collapse.

I learned this the hard way during a training exercise in the Pacific Northwest. We set up a shelter right under a towering pine, thinking the trunk would shield us from wind. By nightfall, a branch snapped and slammed through the tarp, turning our “safe haven” into a mess of splinters. The lesson? The ground is as important as the roof.

Mistake #2: Overlooking Structural Stability

The myth of “just tie it together”

A common shortcut is to tie everything with a single rope or to rely on makeshift joints that look sturdy but aren’t. When wind picks up, those weak points become the first to give way. Structural stability isn’t about fancy engineering; it’s about simple, repeatable practices that keep the shelter from collapsing.

Simple steps to a rock‑solid frame

Use multiple anchor points – Instead of one rope tied to a single stake, use at least three stakes spread out in a triangle. This distributes the load and prevents the shelter from tipping.
Cross‑brace – Add a diagonal pole or a piece of sturdy branch between the two main supports. The cross‑brace turns a simple A‑frame into a truss, dramatically increasing rigidity.
Secure the ridge line – The top line that holds the tarp’s peak should be tensioned with a taut knot (the taut‑line hitch works well). A slack ridge line lets the whole structure sag, inviting water to collect.

During a hurricane drill in Florida, a team set up a “quick‑pitch” shelter using only two stakes. When the wind gusted to 45 mph, the whole thing collapsed like a house of cards. Adding a third stake and a simple cross‑brace would have prevented that failure, and it only took a few extra minutes.

Mistake #3: Forgetting Weatherproofing

The silent enemy: moisture

Even the sturdiest shelter can become unusable if water seeps in. Most temporary shelters rely on tarps or plastic sheeting, but without proper sealing, rain can infiltrate through seams, corners, and the ground line. Moisture not only chills you down but also damages gear and creates a breeding ground for mold.

Quick weatherproofing tricks

Seal seams with duct tape – Run a strip of tape over every overlap. It’s cheap, sticky, and holds up surprisingly well in rain.
Create a ground seal – Lay a tarp or a piece of heavy plastic on the ground, then fold the edges up the inside of the shelter walls and tape them. This “floor” stops water from wicking up.
Add a windbreak – Position a tarp or a tarp‑covered tarp (a “double‑layer”) on the windward side. The extra layer reduces wind pressure on the main shelter and catches rain before it reaches the interior.
Ventilation with a purpose – It sounds counterintuitive, but a small vent at the top lets warm, moist air escape, preventing condensation inside. Just make sure the vent is covered with a flap so rain can’t pour in.

I once spent a night in a shelter that was perfectly pitched but had a tiny gap where the tarp met the ground. By dawn, the interior was a soggy mess, and I woke up feeling like I’d slept in a bathtub. A few strips of duct tape later, the same shelter would have kept me dry.

Putting It All Together

Building a temporary shelter isn’t rocket science; it’s a series of small, deliberate choices. Pick a high, well‑drained spot, reinforce the frame with multiple anchors and cross‑bracing, and seal every seam and edge. When you follow these steps, you’ll have a shelter that stands up to wind, rain, and the inevitable stress of an emergency.

Remember, the goal isn’t to create a luxury cabin—it’s to give yourself a dry, stable place to rest while you wait for help or for the storm to pass. A few extra minutes spent on site selection, structural reinforcement, and weatherproofing can save hours of discomfort later.

Stay safe out there, and keep those shelters standing.