Proper Roof Underlayment Installation

For vaulted or cathedral roof construction provide a free ventilation path from eaves to ridge between all rafters.

Proper roof underlayment installation.

Roof underlayment prevents the roof deck from being exposed to the elements before or while the roofing material is being installed. If you lay the felt perfectly straight you can use its lines instead of horizontal chalklines to align the shingles. Install baffles providing a minimum of 1 inch of clear space between framing and or under roof decking at eaves to ensure that ceiling or roof insulation does not block ventilation paths. How to install roofing underlayment the proper way.

Underlayment flashings and shingles all work together and must be installed in the correct order. There are two easy ways to install self adhering roofing underlayments correctly. If it gets wet it will wrinkle making it harder to shingle. Appropriate personal safety equipment and work.

Cut the membrane into 10 to 15 foot lengths and re roll loosely. Do not use felt as a temporary protection against rain. Here is a video about roofing underlayment. Observe and comply with all osha and other safety standards and codes that apply to roof safety.

Fall protection devices should always be used when working on roofs. However while a self adhered underlayment is a significant leg up against harsh conditions if it is not properly installed the roof is still vulnerable to leaks. Check this out. It starts with installing solid decking usually plywood or oriented strand board but that is not waterproof.

Ideally the roof covering material would be installed as soon as possible but in reality the roof may be protected by only the underlayment for days weeks or sometimes months. I want to be.