Uninsulated Crawl Space Entrance
The entrance to the crawl space in not insulated at all.
Insulated Crawl Space Entrance
We start by spray foaming the rim joists and installing SilverGlo foam boards along the interior of the foundational exterior walls. Next, we either install a new weather-stripped, airtight crawl space door or insulate the existing door to create an airtight entrance.
Vented Crawl Space
We found a small vented crawl space causing cold floors and uncomfortable rooms above. This area is not insulated at all and needs proper insulation.
Vented Crawl Space Properly Insulated
This small crawl space is on a slab, so ground encapsulation isn't necessary. However, the exposed foundational walls need insulation because they are the exterior walls. If the porous cinder block wall wasn't an exterior wall, insulation wouldn't be required. We installed SilverGlo foam boards on the walls, blocked the vent, and sealed the seams with ZypFoam sealant. Now, the walls are properly insulated.
Crawl Space Corner
The other side of the crawl space shows proper wall insulation with all seams sealed. We haven't spray foamed the rim joists yet; that's the next step.
Leaky Crawl Space
Cinder block walls are porous, allowing outside air to leak into the crawl space and then up into the rest of the house due to the stack effect. Additionally, the exposed rim joists contribute to cold floors and uncomfortable rooms above, depending on the season.
Properly Insulated Crawl Space
The rim joists are spray foamed, and the porous cinder block walls are insulated with SilverGlo foam boards and sealed with ZypFoam sealant.
Poorly Encapsulated Liner & Exposed Rim Joists
When we arrived at this crawl space, we found that another contractor had encapsulated the dirt floor, but the liner wasn't properly sealed to the walls, and the rim joists hadn't been spray foamed. We fixed this by sealing the liner to the walls and spray foaming the exposed rim joists to complete the project.
Exposed Rim Joists
We observed exposed rim joists with noticeable discoloration, indicating that outside air is leaking into the home. This can lead to wood drying out, potential mold growth, cold floors above, and uncomfortable rooms. The previous contractor missed sealing the rim joists and did not properly attach the encapsulation liner to the walls. These issues have resulted in discomfort and other problems in the rooms above. It's crucial to ensure you're paying for quality work-trust the experts like us to get the job done right.
Properly Insulated Rim Joists & Walls
This is the correct way to insulate crawl space walls and exposed rim joists. We install SilverGlo foam boards on the porous cinder block walls and seal the gaps with ZypFoam sealant. Finally, we spray foam the exposed rim joists to complete the insulation of the crawl space.
