Basement project

Leakimu · 13 Mar 2019 at 8:21 PM

Hello dear professionals and DIY enthusiasts,

This weekend, I'm starting the 3-year-old idea of creating a hallway in the crawlspace foundation.

I currently have a "crawlspace foundation" with "full-height walls" that is mostly unexcavated. There is a storage area of 15 sqm in one corner with an uninsulated slab. Now I'm planning to bring in an excavator into the foundation to dig out and pour a new slab and build a hallway with a staircase to the "upper floor."

I'm wondering how to handle the existing uninsulated walls and how to construct the new walls against the unexcavated area. What construction/material is best? I want a warm and moisture-free hallway; today, I use a dehumidifier in the unexcavated space and maintain about 65-70% humidity.

I attach an image of how it's intended to look; the red lines are new walls, the black lines are how it looks today.

Help me,
/Mikael

mexitegel · 13 Mar 2019 at 8:27 PM

The best would be 200 mm external isodrän or equivalent.

Leakimu · 19 Jun 2021 at 10:26 AM

Here are some pictures of my project that took off and turned out really well!

A construction site with a brick wall, conveyor belt, and piles of brown earth inside a partially open building.

A small excavator is digging inside a basement area with concrete block walls, exposed soils, and rocks scattered on the ground.

A mini excavator working in a basement, digging dirt and removing debris with a wooden support pillar and scattered bricks around.

Image of a partially renovated basement with exposed brick walls, gravel floor, support beams, and dim lighting; part of a successful renovation project.

Concrete foundation with rebar grid under construction, wooden support beams in the background. Project in progress with visible utilities and tools.

Concrete floor in a basement with visible supporting beams and construction materials in the background.

Basement renovation in progress with metal studs, debris, tools, and construction materials scattered on the floor under warm lighting.

Construction project in progress with wooden beams, tools, and debris on the floor in a basement. Ceiling and wall installations are visible.

Basement renovation showing installed wooden beams and insulation on the ceiling, part of a construction project in progress.

Insulated ceiling and wooden beams in a construction project, with visible pipes and wiring in a dimly lit basement.

A basement renovation project with metal frames, insulation, and tools, showcasing progress in construction.

A concrete block wall partially built in a basement with tools and a bucket nearby.

A room under renovation with drywall installation in progress, tools, and equipment visible, including a ladder, work light, and power tools on the floor.

Construction project in progress with tools and materials scattered across a partially renovated room, featuring bare walls and exposed ceiling beams.

Wooden staircase under construction in a workshop with tools and materials on shelves and a workbench nearby.

Modern staircase installation in a renovated room with gray tiled floor, featuring tools, a baby car seat, and wood pieces scattered around.

A renovated room with tiled floor, recessed lighting, white walls, a staircase, and cleaning tools left in the corner.

Renovated hallway with grey tile floor, white walls, recessed lighting, and a black stroller parked near a door.

Wooden staircase side view in a workshop setting with tools and materials scattered around on the floor.

coccon · 19 Jun 2021 at 10:49 AM

Nice and professional work!
I like your construction of the sled for pulling up soil.

Leakimu · 19 Jun 2021 at 11:17 AM

C coccon said:
Nice and professional work!
I like your construction of the sled for pulling up soil.

Thank you so much!
The conveyor belt is unfortunately not my idea, but was available for rent. But it made everything very easy. I also rented an electric wheelbarrow to be able to get the concrete from the concrete truck. I once heard "work smarter, not harder," and I live by that.

Basement project

Leakimu

Leakimu

mexitegel

mexitegel

Leakimu

Leakimu

coccon

coccon

Leakimu

Leakimu

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