Chapter 6: Exterior Finishes For Wood Light Frame Construction

protection from the weather

The building must be "tight to the weather" with vapor barrier membranes.

Roofing underlayment

Underlayment may be traditional 15# or 30# roofing felt or a newer synthetic fabric.

What is the primary purpose of vapor retarder/ housewrap (a.k.a "Tyvek")?

To reduce moist air infiltration and drafts.

Roofing steps 1: Finishing Eaves and Rakes-

When are Eaves and rakes finished? roofing cornice parts.

Before roofing is installed.

Eaves, Rakes, Drip Edge, Fascia, Soffit, Ventilation Strip (Intake Venting), Gutter.

eaves

the overhang at the lower edge of a roof

Rakes

sloping roof edges

Drip Edge

Metal flashing applied to the edges of a roof to prevent water from infiltrating beneath the protective roof membrane and to direct rainwater into the rain gutters.

fascia

Roofing cornice part

Soffit

The underside of a roof overhang.

Ventilation Strip

(Intake Venting) venting around the entire room perimeter

Roofing step 2:

Roof Drainage

Roofing step 3:

Roof Overhangs and Rain Protection

Roof step 4: Ventilated Roofs

Intake vents (at the soffit) work together with outtake vents (at the ridge, such as ridge vents, spinning tops, gable vents, or exhaust fans) to help keep the roof cool and to remove warm moist air.**

Without proper roof ventilation, ventilated roofs collect moisture within the framing, and promote decay and mold growth.

Roofing Step 5

Roof Shingling

Windows and Doors

1) Flashing

2) Installing Windows and Doors

Exterior siding choices used on wood light frame structures.

1) Board Siding

2) Plywood Sidings

3) Shingle Sidings

4) Metal and Plastic Sidings

5) Stucco

6) Masonary Veneer

7) Artificial Stone

8) Fiber-Cement Panel Siding

Exterior Finishes For Wood Light Frame Construction

a- Protection from the Weather

b- Roofing

c- Windows and Doors

d- Siding

e- Corner Boards and Exterior Trim

f- Exterior Construction

g- Sealing Exterior Joints

h- Exterior Painting, Finish Grading, and Landscaping

Exterior Painting, Finish Grading, and Landscaping

Before staining wood a sealer is often applied to allow the stain to be accepted more evenly for a consistent appearance.**

A sealer is to stain as primer is to paint.

Minimum Vent Area of an attic:

The minimum net free ventilating area in a vented attic shall be 1/150th of the area of the vented space.

Ventilation and Insulation Clearance:

Where wave and cornice vents are installed, insulation shall not block the free flow of air. A minimum of a 1-inch space shall be provided between the insulation and the roof shearing and at the location of the vent.