The pipes are probably venting the toilets.
Things on top of roofs.
Unlike box vents which are square off ridge vents are usually much longer and thinner.
Parts of a roof decking or sheathing roof edge or eaves edge attic saddle ridge valley underlay membrane eaves membrane underlay membrane drip edge roof vents deflector plumbing vent flashing joint covers shingles.
They let moisture and hot air exit the attic but they aren t nearly as effective as other types of roof vents and homes generally need to have several of these units for the best results.
A composite decking made of solid materials.
7 things to know before choosing a metal roof if your current roof is the root of your headache and maybe even a long list of costly home repairs consider these metal roofing pros and cons.
For residences it s usually just a c.
Snow cleats snow stops snow breaks snow blocks snow catchers guttar guards.
Assuming you mean big commercial or apartment buildings they might be air conditioning units electrical boxes water tanks or the tops of elevator shafts.
What are those things on the roof.
Bigger ones might be venting kitchen fans.
It resembles real wood and particularly strong and stable for bearing heavy load.