Q&A for How to Replace a Flat Roof

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Do I remove the old roof when modifying a roof?

Community Answer

You should strip it down to the sheeting, being careful not damage any trim, flashings or valleys. Evaluate from there for other repairs.

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Question

My theater roof is shaped like a "W". What is the best roofing for this?

Community Answer

5ft 060 TPO Membrane in gutter area, and finish off with ashpalt shingles. This gives it a much better look.

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Question

How do I repair a flat roof with standing water?

Community Answer

The first thing you need to do is address the standing water, start by removing the roofing where the water is standing and replace any rotten wood that could be causing the sag, if the wood is okay then use roofing tar to build up that area and proceed with the above steps.

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Question

How can I build a low slope to a flat roof using a troweled material from the sloped finish?

Community Answer

Use metal flashing to make the connection between the roofs, then you can trowel your material over the flashing.

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Question

What's the best time to replace a flat roof?

Community Answer

If it's over 10 years old and you start seeing signs of deterioration, if it's failing to keep water out, and if the top layer is starting to disintegrate.

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