Hidden Secrets To A Perfect Cabin Foundation Every Time!

The Secret To A Perfect Cabin Foundation

The SECRET to building the PERFECTLY LEVEL foundation for a cabin or house is…

Actually there are several things you must do in order to give yourself the best chance at constructing a perfectly level and square cabin. And it all starts with the foundation.

BUILDERS-TIP: We cannot emphasize how critical the foundation is. Taking the time here will save you heartache days, months and years down the road.

#1 Make sure it’s level and square all the way around BEFORE you do ANY framing!

Mike Holmes

Do it right the first time. – Mike Holmes

The fact is… if the foundation of your cabin/home is out as much as 1/8th of an inch at the bottom, by the time you get to the top of a framed wall that slight error will compound ten fold. The end result may be that the top of your framed walls may never line up. No matter how hard you pound on them with a sledge hammer, tug on them with ratchet straps or pry on them with a crowbar. I’ve seen it all.

Why is the alignment of these walls (which stem from your foundation) so critical?

Depending on the truss construction you may very well be exurting tens of thousands of pounds of pressure OUTWARD on those walls and if that load bearing wall is anything other than plumb you risk a catastrophic failure of your entire build. usually AFTER you’ve finished building it as that’s when the most weight, stress and weather affects your build.

Also, skewed construction means windows, doors, flooring, cabinets, and drywall almost never line up properly. We’ll teach you every trick we know as we build our cabin to help you prevent this from happening.

Everything must begin with a perfectly square and level foundation and stay that way until the last nail/screw is driven into the roof.

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5 Steps: Starting A Foundation Right

1. The first secret in building a proper foundation is choose the right ground. Make sure your building on undisturbed soil (earth). Know ahead of time what type of ground your working with (i.e.  clay, sand, gravel, rocks, boulders, soil etc.) Also know if there is the potential for any standing water/freezing. Ensure you also have clearance around the building to work is your in a forested area like us. Remember, putting an exterior finish on your cabin requires more elbow room that the foot print your foundation will take.

2. Never rush this phase of the build. Take twice as much time as you think you need.

When building the foundation remember that this is NOT where to cut corners. The more time you take to ensure your foundation is rock solid, plumb and level the less time the rest of the build will take.

Taking your time now will speed up the rest of the build and that means you enjoying your cabin sooner rather than later.

3. Measure everything 3Xs at several stages of this phase. Even after you’ve got every pad, block, post, beam, or joist in place… check it all again. For plumb, square and level. I know your excited to see those walls go up. And I know the foundation isn’t where you see the biggest results for a hard days work but it is where you’ll get the best return for time well spent.

4. Use the right tools for the job (we share them below) and know how to use them properly to save time, money and frustration.

5. Lastly, don’t be afraid to adapt to the situation. Planning is essential but sticking to the plan isn’t always an option. Sometimes the type of foundation you initially settle on may not be feasible for your type of ground. Adapt and over come but remember to take you time.

Clearing The Land

Trail_Blazing_From_Hidden_Lane

Below you can see the excavator clearing the overburden in our build site.

We had already cut down most of the brush by hand inside this 60ft X 40ft area when we were trail blazing.

Below is the cleared area where we’ll cabin will be built.

The Building Materials Are Delivered

Yesterday all the building materials for the cabin (from Home Depot) arrived and were dropped off at the top of the hill.

Home-Depot-Off-The-Grid-Cabin-Material-3

We had already brought most of the smaller building materials down using our ATV and a small utility trailer so that we could get a head start.

Transporting all the building material to The Off Grid Cabin buildsite (1)

Thankfully the excavator operator who was concurrently building our access road was able to sling down some of the heavier materials for us.

We slung the 3 concrete footings, 36 bags of crusher dust (2,376lbs in total) as a large portion of the lumber.

Home Depot did however slightly dropped the ball.

They forgot to load our steel roof onto the delivery truck which had been stored for us on one of the top shelves inside Home Depot.

The roof was ordered through Home Depot and came shipped from the roofing company in Ontario earlier than expected. Hence why it was waiting at the store for a few days.

They also forgot 36 additional 8″ cinder blocks and the 12 24″ x 24″ concrete pads.

However… they did deliver us 10 1/2″ 4ft X 8ft OSB instead of 10 3/4″ T&G OSB and a good portion of the dimensional lumber is actually longer than we had ordered.

Finally they delivered us 3 extra 10ft 6″ X 6″ pressure treated posts. SCORE!

BUILDERS-TIP: Often times if the length of lumber you ordered isn’t available the store may provide you with longer (never shorter) lumber for for the same price as your quote. They want your business and will often take a hit on the cost of lumber in order to keep you happy and keep your business.

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The Concrete Pads and Layout

Getting this part right is paramount. We discovered after peeling back the top layer of organic material that the underlying material was stone, very compact dirt and solid grey clay. Probably the best case scenario for the type of area we’re in (close to the water). The excavator was able to level the ground out incredibly well for us and that meant minimal manual leveling for us.

Deciding where to build. This was all about the orientation of the cabin to the lake and sun. Luckily both are perfectly in-line and it was only a matter of rotating the layout to suit our view.

BUILDERS-TIP: If you plan on ever installing roof top solar panels then NOW is the time to advantageously plan the orientation of your cabin. This includes not only the surrounding trees (shading) and the orientation of the cabin to the sun but the actual pitch of your roof as well. A quick tip for the pitch of your solar panels… match your latitude (found using Google Earth) to the pitch of your panels (this is for fixed pitch solar panels like ours, meaning we don’t plan on moving them as the seasons change). For more info check out www.solarpaneltilt.com

Leveling out the footings for the off grid cabin

The Cabin will be 16ft deep (front to back) and 20ft wide with an additional 8ft deep deck.

We put in simple wooden stakes to mark out the orientation of the cabin and then leveled out the ground with a shovel.

We’ll be using 6 concrete pads with cinder blocks on top as the footing for the foundation beam to rest on.

Laying out the The Off Grid Cabin Foundation

Aluminum Line Level

Builders Aluminum Level
An invaluable tool we used to help us get the foundation perfectly level quickly was this super cheap string level. I highly recommend you pick one up!

BUILDERS-TIP:  When I share the tools we used I will always look online and find you not only the BEST price for the tool but also a HIGH QUALITY and AMAZON RECOMMENDED tool. I’m all about sharing the best of the best with you and even though this line level is LESS than $3… it’s Amazon’s top choice for line levels and ours as well!

Laser Level

Laser Level Amazon

Another tool that sped up the building process ten fold every day was this small but mighty laser level. This is Amazon’s top choice for laser level and ours as well. We’ve used different laser levels during the build and this reigns king! This easily reaches from one end of the cabin build to the other even on the brightest days outside. 

That level survived being dropped from 30ft, being stepped on and dug out of the mud. It never failed. The battery never died. It’s just plain indestructible.

For a complete list of all the tools we used in the build process you can see our 63 must have off grid tools post.

The beams for the off grid cabin foundation

We used these pieces of lumber and the level to “grade” the ground and finally level it all off with bags of crusher dust.

Using Sand to level the concrete blocks

We will be placing 24″ X 24″ concrete pads on this sand and then stacking cinder blocks on top of that.

Squaring the foundation for the off grid cabin

Our Indestructible Tape Measure

Tape Measure Amazon

It might be less than $10 but this Stanley Powerlock 25ft Tape Rule (measuring tape) survived everything we threw at it. We ran it over with the excavator, dropped it from roof top onto the rocks, left it outside in the rain and even dug one out of the ground a year after we “thought” we’d lost it and I still use it today!

Three 10ft 6″ X 6″ pressure treated posts will be supporting the roof over the front deck and that is why we have the three concrete post footings there.

Leveling the blocks for the off grid cabin

It took a good amount of time to get the foundation perfectly leveled and square but it’s critical to get this part right.

Next time, we’ll will finish up the foundation footings, build the support beams for the floor joists and start the floor joist.

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