So there's a good example of how DIY can be a net consumer of money. And there are plenty of other stories like that. Some of the worst mistakes occur because people are scared to ask for advice; they don't like to admit they don't know.
Bricklaying is a good example. Mortar is made by mixing sand and cement, right? Wrong.
Bricklaying mortar is made by mixing sand, cement, hydrated lime, plasticiser and water. The lime makes the mortar more "fatty" and easier to handle. The plasticiser makes it flow without having to add too much water. If you just use sand and cement it won't flow unless you make it really wet, and then the mortar dribbles out of the joints and down the face of the brickwork, giving a characteristic DIY appearance.
But people don't ask. They have the idea they want sand and cement, probably from their dads, who were accountants or bus drivers or something, and so they walk into the builders' merchants on Saturday morning and ask for sand and cement. Everyone in the builders' merchants knows what's going on but doesn't say anything. And then they watch while chummy strains himself trying to put the bag of cement into the car holding it at arm's length, away from his clean jumper. Don't ever try this, by the way; it gives you a permanent lower back injury; hug that bag tight to your chest, and follow it into the car. You can hoover the car out and you can wash your jumper but you can never fix your back.
Anyway, instead of asking for sand and cement, you should stride up to the counter and say excuse me, I don't have a clue, please tell me what I need to make bricklaying mortar. Everyone in the place will immediately become your friend. The staff and other customers will vie with each other to give you the best advice. And then they will help you load the car up. Believe me, this is true. I always do it.
Not with bricklaying mortar, obviously; in that case I'm the one that's dishing out the advice. But with other things, electrics, plumbing, roofing, I go straight in and say I don't know how to do this, what's the score.
Cement, by the way, wasn't used in mortar until the 1940s. So if you want to do brickwork repairs to your Victorian house, use sand and lime. Lime mortar sets slowly and retains the ability to move without cracking, which is why some old houses look decidedly lopsided, but don't seem to have any cracks.
Cement mortar is a different proposition. It sets quickly. Rock hard. It will not accommodate any movement whatsoever. Cement mortar plus movement equals cracks. Remember that because I'll be coming back to it again.Reuse content