Shelter

The space you live from — warm, dry, secure and standing.

Before it keeps you warm, shelter is the ground the whole plan stands on. Understand the space you have, and half the other decisions make themselves.

Shelter is where people jump straight to heaters and repairs — and skip the bigger question of what their space can actually do.

It has two jobs. First, the space: knowing what you have — land or flat, covered or open, the roof, the ground, the room for people and stores — because nearly every other system leans on the answer. Then the shell: warm, dry, secure, standing, and mended fast when a storm breaks it. And it’s written for the frailest people under the roof.

01
The shape of the problem

Shelter is the ground the whole plan stands on.

Before it keeps anyone warm, shelter is simply the place everything else happens — where the food is stored, the water banked, the people live and sleep. So it has two big jobs, and most people only picture the second. It has to hold the right space — for the people, their stores, and the kit the other systems bring — and it has to keep all of that warm, dry, secure and standing through a hard year.

And here is the part people miss: the profile of your space is Shelter's to capture — and it flows into everything else. Whether you can dig a sump, grow food, park a vehicle, catch rain or mount solar; whether the ground floor needs hardening; how much room the people and the stores get — these are answered here, then handed to Water, Power, Food, Sanitation, Transport and Security to build on. Get the space right and half the other decisions make themselves.

The space you haveland · covered · open

What your home physically is quietly decides what's even possible in every other system. This comes first.

The shellwarm · dry · standing

The envelope that keeps the weather out and the warmth in — and mends fast when a storm breaks it.

The strain it bearsload · security

What the plan parks on your structure, whether it can take the weight, and how safely your stores are held.

02
Start here, before anything

Almost every decision flows from the space you actually have.

The most clarifying half-hour in the whole plan is an honest look at where you live.

Because what’s possible in food, water, power, sanitation and security is quietly decided by it. A house on land can dig a sump, grow food, keep a store and mount a tank; a fourth-floor flat can do almost none of that, and must buy in what it cannot make. Before anything else, take real stock of your ground.

Land, or apartment?

Do you own diggable, buildable ground, or a unit in a shared block? This single answer reshapes every system after it — it decides whether you store, grow and harvest, or purchase and depend.

Covered space, and open space

How much roofed floor do you have for living and storing — and how much open ground for growing, drying, harvesting rain, keeping a few animals? The two are different resources, and you need to know both.

The ground itself

Flat or sloping — a gradient can gift you gravity-fed water and drainage, or complicate every build. Soft soil you can dig and plant, or rock you can’t? The terrain decides what you can put into the ground.

Your water, and where it sits

A well, a borewell, a stream, the mains — and, for a bore, how high the water rests in it. Where your water comes from shapes what the whole plan can lean on.

Shelter is the ground the whole plan stands on.

03
Room to live, not just survive

Space per person is a number — and a very human one.

There is a floor to how tightly a household can pack before a long shut-in year turns miserable. Humanitarian guidance puts the bare covered minimum near 3.5 m² a person — but that is survival, not living. Plan a little more than the minimum, and plan it for the actual people under your roof.

Room for the young to be young

Children cooped in a cramped space for months fray fast, and take the adults with them. A little room to play, to be loud, to burn off energy is not a luxury — it’s what keeps the whole household sane.

A safe place for an infant

Somewhere clean, warm and quiet for a baby — set apart from the busy, smoky, working heart of the home. Small, but it matters to plan for it deliberately.

Easy movement for the elderly and less able

If anyone has mobility or care needs, the space must serve them: a ground-floor place to sleep, a ramp where there were steps, a clear lit path to the toilet at night. Build it in now — you cannot retrofit it in a crisis.

A corner to isolate the sick

The one almost nobody plans, and one of the wisest: somewhere to separate a contagious member so one illness doesn’t sweep through all eight. In a year without easy medicine, a simple quarantine space is quiet, serious protection.

04
Use every surface

The roof is the most valuable acre you own.

Don’t think of the roof — or the terrace, if you have one — as a lid. It’s the most useful surface on the property, and it can do three jobs at once — which is exactly why it has to be planned, because they compete for the same square feet.

Catch the rain→ Water

The roof is your rainwater catchment — often the cheapest, cleanest large volume of water you’ll ever get, banked through the monsoon.

Hold the sun→ Power

It’s where the solar panels belong — usually the biggest clear, unshaded surface you have to catch the day’s energy.

Grow a little food→ Food

Whatever’s left of the roof or terrace can carry pots of herbs, greens, a small kitchen garden — fresh food and green in a year with little of either.

The catch: the panels and the catchment want the same roof, so the plan has to referee — does the array sit above the catchment surface, or claim its own patch, and is there room for both plus the pots? Plan the roof deliberately and it waters you, powers you and feeds you. Leave it a lid, and it does none of the three.

05Load, and the ground floorThe structure has to bear the plan — and defend it.Read more

Two questions people skip entirely, and both are shelter’s job.

First, load. The other systems park genuinely heavy things on your building. A full water store can weigh a hundred tonnes; the fuel, the food and the battery bank add more. Before you site a sump or a store, the structure — and the ground beneath it — has to be able to take the weight. This is exactly why the roof and floor figures stay provisional until someone actually surveys the building.

Second, security — which is half a shelter decision. At street level you gain easy access and lose a layer of protection: ground-floor windows may want grills, and the places you keep what matters — the granary and food store, the water, the documents and the safe — need to be genuinely secure and sensibly sited, not just tucked in a corner. Where your stores live is a structural and a security choice at the same time.

06Then, keep it warm and dryWarmth is the one job with no electrical shortcut.Read more

Only once the space is right does the familiar shelter problem begin — and its central rule catches people out: you cannot electrically heat a room off the battery; the power plan forbids it. So the answer to cold is never a heater. It’s an intact, insulated shell, warmth carried at the body, and one good room the household retreats to on the coldest nights.

And it pays to know where the warmth leaks, because sealing a leak always beats making heat. Most escapes through an uninsulated roof, through draughts around doors and windows, and through cold glass. Seal the draughts, insulate overhead, dress the windows at night — and only then does adding any warmth make sense. Heat poured into a leaky shell is heat thrown away, and battery you can’t spare.

07The slow enemy of a sealed houseSeal it tight for warmth, and you trap the damp.Read more

The tension at the heart of shelter: the tighter you seal against the cold, the more moisture you trap inside — and damp is a slow disease of both the building and the people in it.

Eight people breathing, cooking and drying clothes indoors put a startling amount of water into the air. With nowhere to go it condenses on cold walls and glass, and over weeks blooms into mould that rots timber and harms lungs — often the very lungs of the elderly you’re protecting. The answer isn’t to stop sealing but to add deliberate, gentle ventilation: a little steady air exchange, attention to where steam gathers, and wiping down the surfaces where water settles. Warm, sealed and damp is a trap. Warm, sealed and quietly breathing is the goal.

08
The quieter truths most people miss

The breach, the body, and the survey you still owe.

—Mend the breach in the hour, not the week.

A window smashed in a gale or a sheet of roofing lifted is an emergency measured in hours. A small repair kit — sheet, board, tape, fixings and the tools to use them in the wet and dark — that closes the shell quickly is worth more than a great deal of stored comfort. This is where shelter and the toolbox become the same job.

—Warm the person, then the room.

A tog of bedding beats a kilowatt of heater and never runs the battery flat. Layers, a hat indoors, a hot-water bottle, and heating one small room rather than the whole house — this is how a household stays warm for pennies and no power at all. And keep it all dry: wet bedding chills rather than warms.

—Some of this waits on a real look at the building.

Roof strength, floor loading, where it leaks and what it’s made of — these stay provisional until someone surveys the actual structure. The plan flags this honestly rather than guessing at a roof and a foundation it has never seen.

09
How it ties to everything else

Shelter is where the whole plan physically lands.

Water

The roof is the catchment and the structure bears the tank — a full sump is a hundred tonnes shelter must carry.

Power

The roof holds the panels; the shell’s insulation is battery you never spend on heat.

Air

Sealing for warmth traps fumes and damp — shelter and air are one conversation, never two.

Security

Where your stores live, and whether the ground floor needs grills, is a shelter-and-security decision made once.

Food

Open ground and rooftop pots are where a little fresh food can grow — the space decides what the garden can give.

You’ve read the space. Let Emberline size and cost it.

Tell it about your building, your ground and who lives there — and it sizes the covered space, checks the roof and the load, and specs the envelope, repair kit and bedding, then hands you a purchase plan and a line-item cost.

Fill the Shelter section →← The 13 systems
© 2026 Emberline·All rights reserved·A planning & education tool, not professional advice.