Here is a video about roofing underlayment.
Proper roof underlayment installation.
Underlayment flashings and shingles all work together and must be installed in the correct order.
Subscribe and share please.
How to install roofing underlayment the proper way.
Observe and comply with all osha and other safety standards and codes that apply to roof safety.
I want to be.
There are two easy ways to install self adhering roofing underlayments correctly.
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.
Appropriate personal safety equipment and work.
It starts with installing solid decking usually plywood or oriented strand board but that is not waterproof.
If it gets wet it will wrinkle making it harder to shingle.
Cut the membrane into 10 to 15 foot lengths and re roll loosely.
Do not use felt as a temporary protection against rain.
Roof underlayment prevents the roof deck from being exposed to the elements before or while the roofing material is being installed.
Synthetic roofing underlayment installation guidelines and safety precautions.
Check this out.
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.
If you lay the felt perfectly straight you can use its lines instead of horizontal chalklines to align the shingles.
Installing a roof is much more than just nailing shingles onto some boards.