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ASK OUR DIY EXPERTS!

Firsthand advice on the best tools and techniques for your projects.

How do you string wiring through SIPS panels?

— Barry Collins
Buffalo, New York

The installation of wiring is one of the first concerns people have with structural insulated panels (SIPs), but the reality of the challenge isn’t a big problem. The best way to install wires is by stringing them through floor and ceiling frames, then running the cables down slots routed through the interior surface of the OSB. Cut a plywood template to guide the travel of the router, speeding the operation. Vertical cuts in the OSB are completely acceptable and don’t interfere with wall integrity. Just be sure to avoid horizontal cuts since they greatly reduce panel strength. Extend the slots to 2” deep using a hot knife to remove foam, then install wiring and electrical boxes. Apply foam to the wire slots after inspection, then install interior wall surfaces.

SIPs Wiring

 

— Steve Maxwell, contributing editor 

Possible? Absolutely. If you have enough trees of the right size, species and quality (they have to be tall and straight), they can be harvested, milled and used for your timber frame. This is a wonderful story that will be part of your home for all of its existence. We would be sure to carve the details (date harvested, and date raised) into the frame somewhere as a permanent record and point of interest.

Now, I answered your “possible” question, but here are other questions to be answered befor…

— Dan Trimble and Dan Griffin, Timber Frame Services 

I ordered the Heat Grabber Plan from Mother Earth News. The plans were originally published in the 1970s and the product listed for insulation Thermax — does not seem to be generally carried by big box stores in my area. Do you know where I can get this insulation?

— Steph
Midwest City, Oklahoma

Steph,

Thermax brand insulation is made by Dow. To find a distributor in your area call Dow Customer Information Group at 866-583-2583.

— Heidi Hunt, assistant editor

I’m always surprised by how much stuff accumulates underneath wall-to-wall carpet. Over the years — even if you’re diligent about cleaning —a lot of dirt filters through the weave to the subfloor. 

If your situation is anything like I’ve seen, most of the green, dustlike material is a combination of sand and small particles of foam underlay. A simple vacuuming is the first place to start. Ideally you should use a vacuum with a HEPA-rated filter, to avoid broadcasting fine dust out of the exhaust …

— Steve Maxwell 

They could. However, the usual practice is to wrap any structural member (wood, concrete block, steel) with felt or roofing paper to keep any moisture from condensation on steel — or moisture that might be drawn out of the plaster or stucco or concrete — away from the straw. A moisture barrier such as plastic probably isn't the best solution for wrapping the structural members because moisture also tends to condense and collect on it.

Straw bale construction is based on the age-old …

— Joyce Coppinger, managing editor and publisher of The Last Straw, the 40-page quarterly international journal on straw bale and natural building

How do I clean the carburetor if old gas has clogged it?

— Charles De Boer
Thousand Oaks, California

Cleaning your small engine’s carburetor isn’t terribly daunting, but I recommend that you have the correct service manual for your engine and a carburetor rebuild kit on hand before tackling it. It’s a good idea to start this project without significant pressure to get your machine running that same morning, as it may take a bit of time.

You will need plenty of clean, lint-free rags; some carburetor cleaner (visit your local auto parts store; I prefer aerosol carb cleaner); glass, glazed-ceramic,…

— Oscar H. Will III, editor, GRIT magazine

Laminate flooring came to North America nearly 20 years ago. Laminates please a lot of people, but they disappoint more than a few homeowners, too. The outcome depends on the flooring you choose, where you use it and your expectations. Are you thinking about a new hard-surface floor for your home?  Laminates have a lot to offer, but there are things you need to understand that you won't find in sales brochures.

Originally developed in Europe, laminates are made of a high-density fiberboard core c…

— Steve Maxwell, contributing editor 

It’s a good thing you asked because there’s something a whole bunch of experienced deck owners want to warn you about: It’s not easy to create a long-lasting deck finish.

Many people tell me stories about peeling, fading, mildew and deterioration of their decks—all within a year or two of brushing on hundreds of dollars worth of finish. This is actually a common experience for deck owners across America, though it doesn’t have to be. Successful deck finishing depends on understanding crucial fact…

— Steve Maxwell, contributing editor

There are a couple of ways to go, including simply leaving the wood bare. I’ve worked in buildings with unfinished wooden floors, and they perform quite well. That said, there are two reasons a finish makes sense: It helps the wood resist staining, and it makes it easier to remove the inevitable hardened glue blobs that build up on the floor of any wood shop. Oil-based urethane works well as a basic sealer. Exterior grade latex paint lasts even longer under gritty foot traffic.

May I make a sugge…

— Steve Maxwell, contributing editor 

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