Marking Soft Spots Flat Roof

This can be a result of the plywood sheeting becoming wet from rain above or from moisture not being able to escape from below and leading to mold mildew growth on the wood.

Marking soft spots flat roof.

If you can tell there s a soft spot on your roof this most likely means that the substrate below the roofing material is damaged and deteriorating. These soft spots usually form when the layer underneath gets soaked due to gaps in the shingles. Roof patch putty can be applied using a trowel to fill low areas. Single unit monolithic roofing applied to flat roofs may seem safer to some roof workers but the work is still at height and subject to many similar hazards and safety requirements as sloped roof work.

This is likely your problem if. That dip in the roof with a soft spot is indicative of the fact that you should have your roof repaired asap. You can also use a general epoxy concrete filler and apply mastic on top using a trowel. Keeping up with the regular maintenance of your commercial flat roof is essential for the amount of time the roof will last.

How to fix it. A variety of liquid patching materials are appropriate for fixing low spots on flat roofs. We hired a roofing contractor to take a look. His recommendation was to pull up the entire roof replace the underlying plywood where needed replace the skylights replace the vents add.

He had closed cell foam sprayed under the roof deck and added 2 layers of 5 x 24 fiberglass batts. Most roofs have plywood sheeting underneath the roofing tiles or shingles. The roof is absolutely flat is built with 14 bci that are 24 on center. That dip in the roof with a soft spot indicates that you should have your roof repaired asap.

What is a roof soft spot. Over the period of manufacturer s designated roof lifetime of 25 to 30 years that plywood is exposed to heat in the summers heavy rains and the winter weather and cold dampness it brings. Unfortunately the only way to fix this problem is to tear off the entire roof and replace it with thicker decking. Proper fall protection measures personal protective equipment ppe and adhering to safe work practices can protect workers from fall hazards.

Your whole roof or large sections of your roof are bouncy and your home was built prior to the 1990s. Mastic is a flexible sealant that adheres to almost any material. There are a number of problems that can occur on your flat roof over time and it is important to know how to spot the issues and know when to seek repair from your local flat roof contractor. The reason for these soft spots is that the layer underneath is probably very soaked due to gaps in the shingles cause over time and weather changes and the water is seeping through the sheeting.