WATERPROOF ROOF MEMBRANE INSTALL

Now that we had the roof sheeted and the insulation in the ceiling cavities, it was time to get the roof waterproofed.  The product we used was Adhero and it comes in big rolls.  It is a vapor permeable membrane, and a durable weather resistive roof underlayment.  The Adhero membrane has an adhesive on one side which allows the membrane to be "glued" to the plywood once the plastic on the back of the membrane is pulled off.  Sergio and his roofing crew started on the Casita since it has the smallest roof.  They figured they could perfect their application technique before moving on to the house and garage roofs.

Garage roof complete

Before the Adhero membrane can be applied to the edge of the roof, another type of waterproof membrane needed to be stapled to the fascia.  For this we use Quatro membrane.  Once the Quatro was installed the Adhero membrane would be installed with a couple of inches hanging off the edge of the  roof that would then be folded down onto the Quatro.  This forms a water and air tight barrier.

Lucas and Ray stapling the Quatro membrane to the fascia

Unrolling the Adhero membrane and peeling off the backing

Once the Adhero membrane is glued to the plywood it needs to be "smoothed" out.  This process is accomplished with the aid of a plastic scraper.  By "smoothing" out the membrane you ensure it is firmly attached to the plywood and that it has a tight seal.

"Smoothing" out the membrane

Pealing the backing off the Adhero 

Halfway done with the house roof

An unique perspective of the membrane application process

With a storm in the forecast we needed to ensure the insulation was protected from the rain, and in keeping with the overall mission statement for the build, we reused the plastic backing from the Adhero membrane to waterproof the upper part of the walls on the house.

Wrapped up and ready for the rain

Project over view