BASC Search | Building America Solution Center

Wood siding installation details to improve resistance to wind-driven rain at corners.

Wood siding installation details to improve resistance to wind-driven rain at corners.

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Wood siding installation details for tongue-and-groove horizontal siding.

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What is Roof Flashing & How to Install it

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Video explaining how to correctly install wall-to-roof flashing and kick-out flashing to protect walls from rain water damage.

Moisture Management Fundamentals with Joe Lstiburek

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Video presentation by Joe Lstiburek describing the four layers of moisture management found in walls and how walls should be designed and built to keep moisture out with these layers in mind.

Right – Examples of roof-top plate framing connectors and brackets.

Right – Examples of roof-top plate framing connectors and brackets.

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In hot climate zones, shade building surface with vegetation for passive cooling.

In hot climate zones, shade building surface with vegetation for passive cooling.

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Proper connections for masonry gable end wall to roof help resist wind uplift.

Proper connections for masonry gable end wall to roof help resist wind uplift.

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In high wind areas, provide lateral support to masonry end walls to resist high winds.

In high wind areas, provide lateral support to masonry end walls to resist high winds.

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Locations and causes of common water intrusion problems in homes.

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Right – Examples of wall stud to sill plate and foundation and wall rod connectors and brackets.

Right – Examples of wall stud to sill plate and foundation and wall rod connectors and brackets.

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Install furring strips over house wrap to provide a rainscreen behind wood siding.

Install furring strips over house wrap to provide a rainscreen behind wood siding.

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Calculate projection factor (PF) by dividing overhang (A) by length of window (B).

Calculate projection factor (PF) by dividing overhang (A) by length of window (B).

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Wrong – There is not a water-resistant barrier installed underneath the exterior finish of the walls

Wrong – There is not a water-resistant barrier installed underneath the exterior finish of the walls

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Wrong – The rigid sheathing seams are not taped and the gaps could cause moisture problems

Wrong – The rigid sheathing seams are not taped and the gaps could cause moisture problems

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Right – An existing gable wall is reinforced with horizontal braces that butt up to the gable end wall and connect back to multiple trusses; retrofit studs make full contact with the wall and the compression blocks and are connected to the horizontal brac

Right – An existing gable wall is reinforced with horizontal braces that butt up to the gable end wall and connect back to multiple trusses; retrofit studs make full contact with the wall and the compression blocks and are connected to the horizontal brac

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In high-wind regions, special hardware is used for most framing connections; toe-nailing is not acceptable.

In high-wind regions, special hardware is used for most framing connections; toe-nailing is not acceptable.

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Right – The ties are bent at a 90 degree angle at the nail head and embedded into the mortar joint at least 1.5 inches.

Right – The ties are bent at a 90 degree angle at the nail head and embedded into the mortar joint at least 1.5 inches.

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Wrong – This brick veneer failed in high winds (107 mph) because the ties pulled out of the substrate.

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Wrong – This metal tie remained embedded in the mortar joint but the smooth-shank nail pulled out from the stud.

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Right – Examples of wall stud to top plate and stud to rim joist framing connectors and brackets.

Right – Examples of wall stud to top plate and stud to rim joist framing connectors and brackets.

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A single-story house floor plan showing braced wall line locations at A through E and 1 through 5

A single-story house floor plan showing braced wall line locations at A through E and 1 through 5

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Right – The building felt is installed on all exterior walls and provides a complete drainage system

Right – The building felt is installed on all exterior walls and provides a complete drainage system

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Wrong – The water-resistant barrier is not complete and the holes and gaps could cause moisture problems

Wrong – The water-resistant barrier is not complete and the holes and gaps could cause moisture problems

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Wrong – These four ties were never embedded into the mortar joint, allowing the brick wall to be pulled away from the sheathing.

Wrong – These four ties were never embedded into the mortar joint, allowing the brick wall to be pulled away from the sheathing.

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With fiber cement siding, face nail rather than blind nail where the design wind speed is ≥100 mph.

With fiber cement siding, face nail rather than blind nail where the design wind speed is ≥100 mph.

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Key connection points for a continuous load path for earthquake and high wind disaster resistance

Key connection points for a continuous load path for earthquake and high wind disaster resistance

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With fiber cement siding, place blind nails 3/4 to 1 inch from top edge and > 3/8 inch in from butt ends.

With fiber cement siding, place blind nails 3/4 to 1 inch from top edge and > 3/8 inch in from butt ends.

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Right – The rigid insulation covers all exterior walls and all seams are taped to provide a complete drainage system

Right – The rigid insulation covers all exterior walls and all seams are taped to provide a complete drainage system

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Right – The water-resistant barrier covers the entire house and the seams are taped to provide a complete drainage system

Right – The water-resistant barrier covers the entire house and the seams are taped to provide a complete drainage system

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House wrap is sealed at all seams and overlaps flashing to serve as a continuous drainage plane over the exterior walls.

House wrap is sealed at all seams and overlaps flashing to serve as a continuous drainage plane over the exterior walls.

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