Building Materials - Page 7 - Popular Questions, Answers, Tips & Manuals
Liftmaster garage door opener. Why did it stop working?
Flashing lamp typically indicates safety sensors are misaligned. The up/down arrows on the unit will flash codes that are more descriptive. Download your owners manual from;
https://support.partner.liftmaster.com
12/14/2020 8:04:48 PM •
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59 views • 1 helpful votes
My Craftsman Garage 1/3 HP hbw0777 door opener suddenly won't close after my wife hit the remote a few times as she was trying to open the other door...
Observe the green receiver sensor while the door travels. If it blinks, then likely the optical sensor is causing the door to return to open and flash for 5 seconds.This could be caused by poor sensor alignment or a loose track or loose sensor mount or poor wire splice if not a single length.
You can check receiver sensor alignment by slowly moving your hand, open palm, towards the center of the receiver blocking the transmitter emitter mounted to the opposite track.
Check in two axis, front-back and top-bottom. If aligned properly, the green lamp will turn off as your hand reaches near equadistance to center of the receiver regardless of direction.
9/30/2020 10:06:33 PM •
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281 views • 0 helpful votes
How to fix salt damage on concrete patio. I have 1/2 -1 inch flacking of concrete.
Unlikely salt damage - most likely the concrete was an inferior mix or was badly laid or both and there has been some water ingress with resulting frost damage.
It can be successfully patched but the trouble with patching concrete is the repair has to have a feather edge and concrete doesn't feather edge well and a cement feather edge doesn't age well at all.
To overcome this fairly common problem there are a variety of dry and ready mixed compounds designed for concrete repair that are variously reinforced with resins and/or fibres. They are convenient but quite pricey.
I prefer to use the old fashioned method and overcome the problem of the feather edge by chiseling out more of the original concrete to make a stepped edge at least an inch deep and to make the cavity a fairly even depth of at least an inch deep leaving only good secure concrete behind.
Once the cavity is prepared and free of dust, using a good quality pva adhesive, brush it well into the repair area including the stepped edge and mop out any surplus. Mix enough concrete for the patch using a suitably sized aggregate of 1/2 - 3/4 inch and add a little pva to the mix according to the instructions and fill the cavity, tamp well down, screed off level with the surrounding area and trowel the surface to a similar finish to the original.
Further brushing or trowelling might be needed later.
7/30/2020 8:28:13 PM •
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78 views • 0 helpful votes
Can I program a keyless door opener to a craftman door that doesn't have a learn button
If there isn't a SRT or Learn button, the garage door opener may only have dip switches to link the remote to the opener. In that case, your keypad won't work.
I wish that I had better news for you. Please add a comment with the model number of the opener for further assistance. It's possible that you have a model with the controls that aren't on the back of the opener. I can try to find more information on the unit with the model number.
Cindy Wells
7/4/2020 3:50:13 PM •
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125 views • 0 helpful votes
How to repair a garage door
Step 1:Check metal tracks inside garage
Step 2:Check tracks with a level to make sure they're property aligned
Step 3: Clean the tracks with concentrated household cleaner to remove dirt and hardened grease
Step 4:Check for loose hardware and tighten as needed
6/2/2020 8:09:11 AM •
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75 views • 0 helpful votes
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