It’s crucial to start by checking your local building regulations to keep everything above board. Next, make sure you’ve got all your gear ready—like your drill, sealant, and safety kit. Also, a good look at your roof’s condition can save you a headache later. It’s gotta be up to snuff to handle the skylight’s weight.

When you’re figuring out where to place it, think about what rooms could really do with that extra splash of sunlight. And remember, placement on the roof matters for getting the best light and making sure the water drains off properly.

Cutting the hole is the bit where you need to measure twice and cut once, as my old mentor used to say. Once that’s done, getting the flashing right will make or break your waterproofing, so don’t skimp on quality sealant and make sure those flashings overlap well to keep the water out.

Lastly, chuck some decent insulation around it and seal up the edges to stop any drafts or leaks. Give it a good water test to make sure you’re not going to have any surprises when the rain comes. Trust me, taking your time to get it right means you won’t have to scramble to fix leaks later! Cheers!