What You Need to Know about Flat Roof Restoration


Flat roof (low-slope roof) restoration is not identical to maintenance. To maintain a flat roof, you enlist your trusted, local roofer for annual inspection and spot repair. To restore a flat roof, you revitalize it, you scrupulously examine it, you strategize a program to bring back years of useful life. […]

What You Need to Know about Flat Roof Restoration2019-06-12T11:10:34-04:00

Roof Recovered Offset Not Correct


Sprayed Polyurethane Foam (SPF) is not a waterproofing material. When installed correctly, with a heavy waterproof coating and a slight pitch, it does "shed" water. However, SPF foam has millions of small holes called air pockets created at the time of installation. These holes give SPF its insulating properties. As the coating breaks down and [...]

Roof Recovered Offset Not Correct2014-02-04T12:24:25-04:00

Flashing Seams Separating


Flashing seams must be overlapped correctly and an adequate amount of sealant placed in between the overlap area to ensure proper waterproofing at the ell flashing transition area. Here we found all flashing seams were separating and in need of additional sealant. The correct way to repair this area is to replace the flashing with [...]

Flashing Seams Separating2013-11-25T10:51:39-04:00

Roof Boot Flange


As with all rooftop objects it is important that proper water flow and installation are considered. Flashing that is not layered correctly and sealant applied in the right junction areas allow water seepage. The boot flange was not installed correctly with the proper overlap procedure. Sealant has done a good job covering up the installation [...]

Roof Boot Flange2014-01-15T14:46:25-04:00

No Sealant at Flashings


Although flashings bridge transitions in the roof, when not sealed properly they are ineffective. Flashing is designed to turn corners and breaks in a roof, which tend to have more movement than other areas. If not sealed properly, these flashings do little to stop water from entering the roof system. This is allowing water to [...]

No Sealant at Flashings2014-04-14T14:08:06-04:00

Backwater Laps


When installing a roof system it is important to always start at the lowest point and proceed upward toward the roof's peak. This ensures that each layer of materials overlaps the previous. Even on flat roofs, this principle is important. As water travels, on a pitch or on a flat roof, if two seams are [...]

Backwater Laps2014-04-14T14:11:46-04:00

No Starter Strip


Membrane Starter strip is a narrow strip of membrane at the perimeter designed to seal perimeter flashings and prevent wind uplift. When membrane starter strip is omitted or not installed correctly strong winds have an opportunity to lift the first row of membrane and cause the "domino effect". This has led to entire roofs being [...]

No Starter Strip2014-04-14T14:16:30-04:00

Fasteners Uplifting


"High nails" (uplifing fasteners) were found on this roof. During roof underlayment installation it's easy for installers to forget about proper pressure setting on their nail guns. In most cases too many nailers are hooked up to a low volume compressor and the air supply is not sufficient to drive each fastener fully. At time [...]

Fasteners Uplifting2014-04-14T14:19:57-04:00

Ponding Water


A code violation and warranty exclusion on all asphalt based roof systems, ponding water is when water sits on a roof for more than 48 hours without being evaporated or running off naturally. Water ponding breaks down asphalt, which is an oil-based product. Think of potholes in the road. Or, imagine a pot of boiling [...]

Ponding Water2014-04-14T14:21:29-04:00

Offset Not Correct


The way membrane roofs work is by their overlapping design. As the previous layer is covered by the next it creates stair step water shed design, disallowing seepage and water backslaps. This stair step design also has a vertical component to it. If each row is not offset correctly, water may enter the system through [...]

Offset Not Correct2014-04-14T14:23:13-04:00