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10
votes
11answers
7k views

Which material should I use for a whiteboard that would erase easily?

I saw some DIY tutorials recommending to use tileboard to make a cheap whiteboard. I had a piece lying around, and tried some dry-erase markers on it. Turns out they don't erase well at all when ...
2
votes
1answer
184 views

How can I tell whether this roofing material is hazardous to tear down?

I've got this little building in my garden that needs to be completely removed to make room for building a real house. To keep costs down, I'll be doing most of the tear-down myself but I'm unsure ...
13
votes
6answers
12k views

What is better for a roof, plywood or OSB?

While watching the builders next door do their thing, I became curious with their technique to install plywood on edges neighboring the next townhouse, and OSB for the rest (which for these narrow ...
5
votes
2answers
2k views

What is the silicone-like coating on CREE LED light bulbs?

I recently bought some CREE LED bulbs, the kind pictured below, and while they are the same shape as glass incandescent bulbs, they seem to have some sort of cloudy and sticky rubber coating, as if ...
3
votes
1answer
411 views

Is this old basement floor concrete, grout, or something else?

What is the likely construction/material of the basement floor shown below? It's not very flat, and the surface appears sandy. It's almost as if some kind of skim-coat was applied to the dirt floor. ...