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SKYLINETHE ROOF FIELD GUIDE

THE HOMEOWNER’S READING ROOM

Good questions. Better roof decisions.

Roof leaks, overflowing gutters, uncertain bids. Understand the problem before you choose the fix.

100 practical guides · Roofing, drainage and the decisions around them

Built from questions in Reddit discussions and checked against technical and official sources. Read our approach.

100 guides

Leaks & diagnosis · 5 MIN READ

Roof Leak or Condensation? How to Separate Two Different Problems

Rain entry and condensation need different repairs.

Leaks & diagnosis · 5 MIN READ

Why a Ceiling Stain Can Be Far from the Roof Leak

The ceiling stain is often an exit point rather than the roof entry point.

Leaks & diagnosis · 5 MIN READ

A Roof That Leaks Only in Heavy Rain: What Changes

A roof that stays dry in light rain but leaks in a downpour may have a detail that fails only under concentrated runoff, wind exposure or backed-up drainage.

Leaks & diagnosis · 5 MIN READ

Why Roof Caulk Repairs Keep Failing

Repeated caulk failure usually means either the sealant joint was never suitable or the underlying drainage detail still directs water into a vulnerable location.

Leaks & diagnosis · 5 MIN READ

Pipe Boot Leaks: Repair Collar or Full Flashing Replacement?

A repair collar can address a compatible, localized failure around a pipe, but it cannot correct a defective flashing flange or an incorrect relationship between flashing and roof covering.

Leaks & diagnosis · 5 MIN READ

Roof Valleys That Discharge into Walls

A valley that sends concentrated roof runoff directly into a wall junction requires more than a search for a small hole.

Leaks & diagnosis · 5 MIN READ

Step Flashing and Counterflashing: Where Roof and Wall Meet

Step flashing and counterflashing perform related but different jobs where a sloped roof meets a wall or chimney.

Leaks & diagnosis · 5 MIN READ

Roof Leaks After Solar Installation: Coordinating the Inspection

A leak appearing after solar installation deserves a coordinated roof and solar inspection, but timing alone does not prove who caused it.

Leaks & diagnosis · 5 MIN READ

Flat Roof Penetration Leaks in Winter

A flat-roof leak during a thaw may originate at a penetration, but water emerging there can also have arrived from elsewhere in the assembly.

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.

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.

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.