Different Types of Home Foundations Seattle WA


Home foundations Seattle WA is the most important thing you have to take seriously before building your construction over the foundations. Because a strong foundation will ensure the long-lasting feature of your structure. The suitable types of foundations will add the durability of the Infrastructure will save some of your money too. Also, the material and type of the foundation rely on your thinking about how you will want to use your land, weather, conditions of the ground and water, etc.

Essential Things to Take Into Account For A Foundation

The main responsibility of the foundation is to hold the weight of your structure and make it strong and durable. The things you have to bear in mind when you choose the materials and types for your foundation are:

Use Of the Space 

You have a plan, of course, in your mind to utilize the below-grade area. Maybe you plan to use the space as a storage or living space. The design of your foundation will be so that the basement becomes dry, warm, and hygienic.

The Weather of Your Area

Of course, the weather impacts the types of your foundation. When it is summer or warmer climate, the insects will get welcome in your place. So, don’t use wood foundations for your site. On the other hand, the slab foundations are also not suitable for cold seasons as the foundation becomes under the vast pressure of the weather. The base starts to crack because of it.

Foundations Seattle WA

Soil Of the Ground

The soil of a foundation needs to be stable and without disturbance which will keep away the breakdown of your building. To get to know about the quality of the soil, you should conduct a test. The test result will inform you about the types of soils, their moisture level, and their density.

Moisture Level 

A perk test may come your handy. The function of a perk test is to detect if the of your ground will penetrate water adequately for the septic system, which will not let the earth’s water reach the foundation. Getting an idea about your durable and strong foundation is a must for you. You can be sure how much the foundation will dry through the perk test. In addition, to protect your foundation, you will have to utilize some materials like downspouts, gutters, and a sub-slab drainage pad that will not let the moisture come near the foundation.

Topography of Your Area

Certain things have an impact on your foundations. If you have a daylight foundation, it will need a lot of slopes.

Different Types of Home Foundations

The house’s three most popular foundations are concrete slab foundations, which are 54%, basements foundations are 30%, and crawlspaces foundations are 15%. In Seattle, a concrete contractor can use materials like poured concrete, stone, wood, CMU of concrete masonry units, ICFs or insulated concrete forms, etc., for constructing the crawl spaces and basements.

Foundations Seattle WA

Poured Concrete Slab

For the slab-on-grade foundations or concrete slab foundations, the thickness of the foundations will be from 4 to 8 inches. It is more cost-effective than the crawl spaces or basements. The grounds have the power to not melt and warm in the winter season. But it is a bit problematic to get near the home’s drainage pipes because they are lower than the slab by a few inches.

Crawl Space Foundation

The crawl spaces usually are 3 to 4 feet deep and usually are not heated and vented the flow of the air, which does not let the moisture grow. The crawl space has some advantages. Supporting the entire structure will help you give your water heater and furnace necessary spaces and some extra space. To build up the crawl space, you can use the materials poured concrete walls, CMUs, and ICFs.

Wood Foundation

The below-grade foundation walls are also made from the CCA or chromated copper arsenate and treated with wood pressure if you want to build a wood foundation. The CCA sits on the concrete slab on the top of the crushed rock or gravel. You will get some benefits from the CCA as it does not allow mold, fungus, or rot and does not let the ants or insects enter the foundation.

In some people’s belief, it is easy and quick to install wood foundations. In addition, they also consider woods to provide a warm home with low utility bills compared to poured concrete walls and CMUs. But wood foundations are more costly than those foundations. Besides, the wood foundations may invite insects and ants to the place, rotting and damaging. The foundation needs to be built correctly to avoid all these issues.


In the early 20th century,  the stone foundation attracted people, built up with stones and bound them together with the mortar spread on the top and stones. You will have to ensure a water-resistant feature for your stone foundation to prevent the mortar from degrading and diminishing the wall’s longevity and robust quality. If you fail to build your house correctly, the stone foundations may bend and crack, which will create water leakage.

Pre-Poured Concrete

The poured concrete foundations have more benefits than the CMU foundations. It is compacted, strong, jointless, etc. In addition, it takes less time than CMUs for construction. But the strength of the poured concrete foundations may reduce if the concrete surface strips, disintegrates, or peels off. Water may leak from the cracked part of the foundation due to faulty construction.

Concrete Masonry Units

If your experts can handle CMU foundations properly, it becomes stranger than the poured concrete foundations. A poured concrete needs an extra wooden framework to shape the concrete. But for the CMU foundations, you can save both the mold and labor costs. In addition, a CMU needs a barrier for water and air for the foundation.

Concrete Panels

Building a concrete panel foundation needs firm concrete studs. It helps support the structure’s load and the concrete footing. Besides, you can also use insulation, rebar, and polypropylene fibers to make them stronger. But the concrete panel can develop moisture if there is a problem in the foundation. Mold will grow, and it will make the place unhygienic.

Foundations Seattle WA

Below-Grade ICF Walls

ICFs can build long-lasting and energy-saving below-grade walls. ICF is an excellent system for your concrete walls to cure the surrounding environment. The foundation of it becomes two times stronger than the poured concrete foundation. ICF has many advantages: they are disaster-proof, fire-resistant, windproof, and remain un-shaky even in earthquakes.


You need to consider a few things for any home foundations Seattle WA cloudconcreteseattle.com. Share your plans with expert concrete contractors. You may not have helpful ideas, but they will guide you thoroughly in this matter, which will help you to understand the proper way of a foundation—wishing you luck with your durable structure!

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