Couldn’t agree more about not skimping on waterproofing, especially near the ocean. Here’s what I’ve seen:
- Sheet membranes take more time to install, but you can actually see if you’ve got full coverage—no guessing.
- Spray-ons are tempting for tricky spots, but the prep and humidity have to be perfect. One little slip and you’re dealing with hidden moisture, like you mentioned.
- For budget: I always tell folks to plan for the “boring” stuff (membranes, flashing, vapor barriers) first. It’s not flashy but it saves a ton of headaches later.
Had a client try to save by skipping a proper membrane in a bathroom—ended up with warped subfloor after one winter. Not worth the risk.
Totally agree on not cutting corners with waterproofing—learned that the hard way in my old place. Here’s what I’ve noticed:
- Sheet membranes are a pain to install, but you sleep better knowing it’s done right.
- Spray-ons always make me nervous, especially with our unpredictable coastal weather.
- I always budget extra for “invisible” stuff like flashing and vapor barriers. It’s not fun to spend money on, but it’s way cheaper than fixing rot later.
Curious—has anyone tried those newer liquid-applied membranes in older homes? Wondering if they’re worth the hype or just another thing that sounds good on paper...
Liquid-applied membranes are actually pretty solid, especially for weird-shaped or older spaces where sheets just don’t fit right. I’ve used them in a couple of 1950s cottages—no leaks so far, even with wild storms. Prep is everything, though... skip that and you’re asking for trouble.
I get the appeal of liquid-applied membranes, especially for tricky spaces, but I’ve actually had better luck with sheet membranes in coastal spots. They seem to hold up longer against salt air, at least in my experience. Prep’s still key, but maybe worth considering both options.
I hear you on the sheet membranes—my last place right on the dunes, I went with those after a liquid job basically peeled up after two winters. That salty breeze is no joke. Still, I kinda like mixing both if the budget allows, especially around weird corners or deck edges where sheets are a pain. Prep eats up more time than you’d think, but it’s worth it if you don’t want to be patching stuff every year.
