Before you can go gun-ho on something like this thinking “I can do it, who needs a cable guy!” You need to know a few things. Reason why I say this I do this as my job and always hear “I was going to do it but I just don’t know”. So with that said here are things you need to know.
1. – Safety
This requires to go into the Attic. You might want to plan for a cool day such as the Morning or Late Evening. Mid day you will sweat buckets within minutes if you live in a hot climate. If you never been in an Attic before you will learn quickly to watch your head for roofing nails and to be sure to walk on the supports, studs and trusses. Never walk let alone sit on the drywall ceiling, it will not support you. Also avoid stepping on electrical wire and watch the AC duct work.
2. – make land marks.
Before going into the Attic do a walk through to where you need to go and take note of light fixtures, AC vents and plumbing. This way when you go into the Attic you’ll know the room you want is the correct room. If you’re running Coax you can make a marker by stripping a large chunk and stick the bare copper (stinger) through the ceiling near the location. This will leave a small hole you can easily patch.
3. – Tools.
You’ll need a few tools such as a head lamp, drill with at least a 7/8 paddle bit (bigger if you plan to run four or more cables into the same location), Tape, wire cutters, Glow-rods or chain. These tools are needed for the Attic portion.
4. – Misc
Try not to use wire that already has connectors on them. If you have no choice then use plenty of tape on the connector end and if dropping more than one cable then stagger the cables if you they have connectors on them.
Also it is far much easier with a second person. They can guide you if you get lost by knocking on the wall and they can even tell you if the wire dropped all the way.
Avoid exterior walls. The insulation will hinder you. Also there is a chance you’ll run into fire blocking. Fire blocking is a 2×4 or 2×6 that is running Horizontal between two studs. They’re typically four to five feet up in the wall. A stud finder might be able to locate them, most stud finders are just metal detectors and locate a stud by finding nails and screws that secure the drywall on. Hopefully the Dry-wallers put a couple of screws or nails into the fire block. The only way around a fire block is to cut the dry wall to reveal it then notch it, break it out or just drill through it, just easier to drill through it.
Avoid laying your cable on Can lights, they get very hot. Try not to follow the same path as electrical if you’re running Data, TV or Audio. If you’re running Data or audio have it four inches away minimum from any electrical. Keep in mind you need to measure the wall distance. For an example you want to splice into an existing TV and want to add a Coax cable to another wall in the same room and your walls are eight foot and the span twelve feet, add sixteen and twelve and add six to give you some wiggle room of slack, the total should be thirty-four feet of cable will be needed.
6. – Interior side of things
This is the easy part. You’re just “trimming” and if you had a helper it would be a breeze since the helper could have cut the drywall and pulled the cable ends through. However if you’re doing it alone then you would have cut the drywall for your plate and shoved a marker in the ceiling before going into the Attic.
If there is anything I missed it will be covered in the finished guide.