Materials & assemblies · 5 MIN READ
Can Asphalt Shingles Be Used on a Low-Slope Roof?
Asphalt shingles are not a universal covering for every roof plane.
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Materials & assemblies
Compare the whole roof system.
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13 guides
Materials & assemblies · 5 MIN READ
Choosing Between TPO, PVC and EPDM: Ask About the Assembly
Choosing TPO, PVC or EPDM is an assembly decision, not a contest with one universal winner.
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Materials & assemblies · 5 MIN READ
Standing Water on a Flat Roof: What Needs Investigation
Standing water on a low-slope roof is a condition to investigate, not enough by itself to declare the membrane defective or the roof acceptable.
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Materials & assemblies · 5 MIN READ
A Flat Roof Still Leaks After Several Patches
Repeated patching without a durable result is a reason to reopen the diagnosis.
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Materials & assemblies · 5 MIN READ
Wrong Repair Material on a Membrane Roof
When an unknown tar, coating or sealant has been applied to a membrane roof, identify both the original roof and the repair material before choosing the next step.
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Materials & assemblies · 5 MIN READ
Coating a Flat Roof: What Must Be Sound First
A roof coating should be evaluated as part of a rehabilitation system, not as proof that an existing roof is dry, stable or properly drained.
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Materials & assemblies · 5 MIN READ
Tile Roof Leaks with Intact Tiles
Intact-looking roof tiles do not rule out a leaking roof assembly.
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Materials & assemblies · 6 MIN READ
Comparing Tile Underlayment Proposals
Compare tile underlayment proposals by the exact product, approved application, layer arrangement, roof geometry and detail scope.
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Materials & assemblies · 5 MIN READ
Lift and Reset or Replace a Tile Roof?
Lift-and-reset work removes tiles so underlying roof components can be renewed, then returns suitable tiles to service.
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Materials & assemblies · 5 MIN READ
Planning Roof Work Before Solar Panels
Before installing solar, assess the roof assembly that will become harder to access beneath the equipment.
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Materials & assemblies · 5 MIN READ
Metal Roof Oil Canning: Appearance or Performance Problem?
Oil canning is visible waviness in metal panels.
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Materials & assemblies · 5 MIN READ
Metal Roof Penetrations Across Panel Ribs
A pipe through a profiled metal roof needs a flashing detail suited to the panel shape and the penetration.
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