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Metal Roof Gutters
That is a problem with metal roofs. I have asphalt shingles so the snow and ice tend to stay on the roof rather than avalanche off taking the gutters with them. Some people use vinyl gutters that clip on and off and just take them off for winter. I leave mine on but keep the roof raked pretty well and they haven't torn off. I did get water in the basement until I installed the gutters.
Some people, especially with hip roofs don't use gutters but just put sheet metal at ground level below the hip joints to collect water and channel it away from the foundation. A more extreme solution is to increase back grading of the building or bury clay or vapour barrier around the foundation at an angle to take water away from the foundation.
If ice stays on the roof and water problems happen in the spring the problem could be ice damming on the roof. I have that problem if I don't keep it raked. It happens on the lower few courses of shingles and it does seem like it comes in through the walls. Roofers put regular shingles on an addition that really needs low-angle shingles. Guess that'll keep me raking till it's time for a new roof.
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Metal Roof Gutters
Tiling a foundation is very good and really the best way to keep a dry basement in many cases. Some friends had water in the basement after every hard rain for years and then found that the builder left out the tiles on one side of the house. Duh! I installed a length of perforated 4" flex drain along the front wall of a garage once. The pipe came with a mesh sleeve around it. I think that's supposed to help with sediment.
The drawback of course is that a foundation has to be dug out to install the pipe. Pretty good idea really if a person is up for the work. Retrofitted waterproofing and insulation could be applied at the same time.
AC mentioned the importance of the tiling going downhill. The best drains of this type do exit to light and go downhill from there. A guy who is now a building inspector once told me that it wouldn't be worth doing for the house that was at our camp. The context was preventing frost damage. What he said was that heavy frost damage happens in years where there is a very wet fall followed by a hard snap freeze. Saturated and compacted soil around foundations that freezes is what does the damage. Of course if the foundations were well drained, the damage would happen. However, when you need drainage the soil everywhere is saturated and unless you've got a hill there's no place for the water to drain. He did say that making a sump and pumping drainage well away from the house would work but there probably are better solutions.
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Metal Roof Gutters
I think I'm guilty of mixing two subjects. One is a roof runoff problem and the other is a subsoil moisture problem. The two can be related of course.
I guess I was thinking of tiled foundation footings. If just catching roof runoff cures the problem then shallow trenching and flex drain works great and isn't a huge job. I've heard of some people who want to collect rain water using gravel filled troughs below eaves to filter and run rain water into buried tanks. Perforated flex drain should be easier if you don't want to save the water.
My father in law has a house with a large back yard that slopes toward the house. There's a retaining wall and a sunken patio behind the house. The soil is very sandy here but I've never figured out why he doesn't get water in the basement. Maybe the retaining wall diverts enough water around the house.
In addition to the other solutions mentioned, it looks like I cured a springtime basement water problem last summer. I relocated gutter down spouts, re-graded a drive so more of the yard drained down the drive and improved the back grading to part of the foundation by less than 6". Lots of things other than gutters do work.
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