Housewrap, Windows, and Rainscreen

Self-adhered vapor-open Henry Blueskin, followed by carefully installed windows, form the new weather barrier for the restored dormers.

Wrapping with Blueskin

Mark Pollard starts applying Blueskin to the dormer cheek. By peeling off the backing in a small area, he can easily position and re-position sheets of the material before sticking them down permanently.

Installing Step Flashing

Before applying the weather barrier to the side of the dormer, Tyler Stroud installs step flashing under the shingles.

Wrapping with Blueskin

Pollard wraps the Blueskin around the side of the dormer after adhering the material to the dormer face.

Adhering the Edges

Pollard laps the top edge of the self-adhering Blueskin membrane up onto the underside of the soffit.

Lapping into the Window

Pollard folds the edge of the Blueskin into the window opening, lapping it over the sill flashing membrane at the bottom.

Applying Pressure

Pollard rolls the Blueskin with a rubber roller to ensure a good bond to the OSB substrate.

Applying Pressure

Pollard applies pressure to the membrane with a rubber roller to ensure a good bond between the membrane and the substrate.

Covering the Peak

Stroud and Pollard position the Blueskin on the gable end of the dormer above the window opening.

Peel and Stick

Pollard and Stroud peel the backing off the Blueskin membrane and smooth the material onto the wall.

Window Fastening Straps

Pollard trims the window attachment hardware to length with snips.

Setting the Window

Stroud lifts the window into position.

Fastening the Window

Pollard screws the window attachment strap to the framing.

Caulking Trim to Housewrap

Stroud applies a bead of silicone sealant to the top edge of the pre-applied window trim.

Caulking Trim to Housewrap

Stroud applies a bead of silicone adhesive to the pre-applied trim at the side of the window.

A Tape Seal

Pollard applies Blueskin tape lapping from the side casing of the window onto the wall face.

Flashing for the Head Casing

Pollard bends a piece of window cap flashing.

Window Head Flashing

Pollard nails a site-bent piece of aluminum cap flashing to the wall at the top of the window head casing.

Taping the Flashing

Pollard and Stroud apply vapor-permeable VP100 tape over the flashing to seal the joint between the WB25 and the flashing.

Top Edge Seal

Following the manufacturer's instructons, Pollard applies silicone sealant to the top edge of the VP100 tape at the window head.

Sealing the Edge

Pollard smooths the silicone sealant at the top edge of the VP100 tape.

Standoff Trim

A view of the back of the dormer gable rake trim shows strips attached to provide an air space behind the boards for drying.

Installing Rake Trim

Pollard places a frieze board at the top of the dormer gable end wall.

Nailing the Trim

Pollard fastens the gabe end rake frieze board with stainless steel nails.

Trimming Out

Pollard fastens a piece of gable end rake trim.

Creating an Air Space

Pollard applies MortairVent rainscreen fabric to the wall. The material maintains a 5/8-inch air space behind clapboard or shingle siding. Folding up the integral screen at the material's edge creates an insect barrier.

Creating an Air Space

Pollard applies MortairVent to the wall at the side of the window.

Creating an Air Space

Pollard laps the MortairVent over the flashing at the windowsill.

Keeping the Bugs Out

Pollard staples an insect screen material to the bottom of the dormer cheek wall.

Creating an Air Space

Pollard attaches MortairVent to the dormer cheek.

Keeping the Bugs Out

Pollard folds the bug screen up and fastens it with cap nails at the bottom edge of the MortairVent rainscreen fabric.

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