Tag: brick

New Basement Electrical

Before we start ripping up the floor of the basement, it made sense to put in the new electric. For one, it’s easier to put in overhead lights with the floor a little higher, but more importantly we want to cut down on work that needs to be done after the floor is done since we’ll be in a hurry to get moved back in. Plus, having good lighting down there instead of some crappy dangling fixtures will make working on the floor a little better. I debated doing the electrical myself, but in the end I just called Percy, our electrician, and he and his assistant Kevin got it done in a few days, where it probably would have taken me a month. Percy will come back after the interior walls are up to add a few more outlets and switches, but this gets us 90% of the way there.

New switches and outlets

New switches and outlets

We went the typical recessed can light route. The ceiling in the basement won’t be very high, so anything that sticks down is less than ideal. I bought a few LED light bulbs to decide what color temperature and style we like before ordering a whole set of them. We settled on the 3000K “bright white” since they’re a nice compromise between the 2700K yellowish “warm white” and the 4000K laboratory “daylight”. The bulbs came out to $12 each, cheap for LEDs, but expensive relative to CFL and incandescent until you consider the operating cost and lifetime. A regular 65W bulb costs $3 and  lasts 1,000 hours. A CFL costs $8, uses 14 watts, and lasts 8,000, while an LED uses only 8 watts and lasts 25,000 hours. Including replacement costs and electricity, every thousand hours of incandescent use costs about $13.85, compared to a CFL that costs $3.38 and an LED that costs $1.82. Since we’ve got nineteen lights just in the basement, the payback is there even vs CFLs. We spent $75 more on LEDs than CFLs up front, but even ignoring that the LEDs last three times longer, the electricity savings will pay that back before the CFLs are half used.

New can lights

New can lights

I was concerned about mounting the switch and outlet boxes on the brick, since even though the metal is galvanized, moisture can corrode it. The old finished basement had some extremely rotted boxes and conduit that we don’t want to recreate. Percy sprayed the backs of all of the boxes before putting them up with a rubberized coating to prevent water contact from the walls. Our hope is that along with improved water management, the electrical will stay dry and last a long time.

Outlet box spray coating

Outlet box spray coating

The plan is to install a foam panel system on the exterior walls that will provide a drainage plane behind the insulation. These systems have raceways for the electrical so we can just fit them over the installed conduit when we finish the basement. That will ensure any water that comes through the brick will be able to drain away and that the wall itself is impervious to water and won’t rot. It’s exciting to see more progress,and to see how much the basement has changed so quickly, especially since I didn’t have to do all the work!

Basement Tuckpointing

Before tuckpointing

Before tuckpointing

The next step down the road to getting our basement livable is repointing the brick walls. 120 years of water damage, bad patching, paint, and neglect had left the brick in bad shape. Large portions of the walls had been parged with mortar or concrete, which can trap water in the brick rather than allowing it to dry. We started by chipping off the parging. Some of it was so loose and brittle we could snap chunks off with our bare hands, while other sections came off only reluctantly with a hammer and chisel. About the time I got my rotary hammer back from a friend, I decided we just needed to hire out the job to some professional tuck pointers.

After hammer and chisel

After hammer and chisel

We got a couple of quotes, but wound up settling on Tuckpointing Masonry Systems, who Dean had used and recommended. They came in with a crew and after two days of dust and noise, the basement looked amazing. They ground out all of the mortar below grade and completely repointed it. Above grade they knocked out the loose material and spot-tuckpointed where it was needed.

After tuckpointing

After tuckpointing

The other thing we had them do was to rebuild the sills on the front bay windows. The bay windows are taller than the other windows in the basement, extending down to ground level, which makes them susceptible to water coming in. To prevent this, the tuck pointers installed new concrete sills with flashing. The next step is to re-frame the two angled windows in the bay, since they currently don’t have lintels.

Rebuilt bay windows

Rebuilt bay windows

I’ve requested quotes on new windows and asked Percy, our electrician, to come over and give us a quote on new electrical in the basement, including lights, outlets, and switches. We’ve got a lot of work ahead of us, but once all of that is done we start breaking up the floor!

Mechanical Room Preparation

With the hot water heater question sorted, I need to get the area of the basement that the water heater and boiler are going into ready. Eventually this will be the mechanical room… when we frame out the basement, after we lower the basement floor, after we finish the rest of the house. We already ran gas line, but there are still a few things to be done.

Mechanical room wall

Mechanical room wall

The boiler will be hung on the wall, and since the basement isn’t framed out that means it’s going on an outside wall. We don’t want to mount it directly on the brick because we want our house insulated and air sealed. That means we need to frame the outside wall where the boiler and panel will go. However, because we’re going to eventually lower the basement floor, we can’t just put a sill plate of the wall on the floor, we need to attach the studs to the brick wall. To ensure air and moisture management, we’ll use sill gasket behind the studs and fill the holes with caulk. The area between the studs we’ll fill with closed-cell spray foam.

Before any of that can happen, I need to prepare the wall. As is typical of our house, years ago someone saw a problem and went out about fixing it the wrong way. In this case, moisture problems with the brick foundation wall were not corrected by fixing gutters, redirecting storm water, or repointing the brick, they were “fixed” by slathering (parging) mortar or cement all over the brick wall on both sides in an effort to water seal it. This is generally a terrible idea because it traps water in the brick, rotting it from within. The ineffectiveness of this strategy is revealed by the coat of paint they put over the finished product which is now bubbled up and crumbling off.

So I’ve been removing the parging with my rotary hammer in chisel mode and a pry bar. It doesn’t need to be perfect, but the wall does need to be plumb. While the brick itself is pretty straight, the parging is thick enough in places to make for a wonky wall. Removing it is tricky because the parging doesn’t want to come off and it’s easy to damage the brick itself.

I also need to run electrical from the panel to the mechanical room. Chicago code requires EMT conduit, and in this case it’ll be ¾” because I need to run several circuits (lighting, hot water heater, boiler and pump, smoke detector, and eventually the air handler and HRV). I’m hoping to get both the wall prep and the electrical done by this Monday. With that out of the way we can get the hot water heater installed and focus on the remaining tasks for the boiler prep.