Renovation-Headquarters.com

Home
Main Index

Siding and Cladding Problems

Vinyl And Metal Siding

Problem: Water penetration.

Water can penetrate through the joints of vinyl and metal siding, soaking insulation and deteriorating framing members and interior finishes.

Cause: Poor detailing and construction of joints between siding strips at corners and around windows and doors.

Solutions:

  • Drain water away, and prevent the flow of water through the joints of vinyl and metal siding, by taking the following precautions:
  • Follow the manufacturer's instructions for installing the siding as shown in Figures 38a and 38b.

Joint Details For Metal And Vinyl Siding - Allow space for expansion of siding panels.

Figure 38a - Joint Details For Metal And Vinyl Siding - Allow space for expansion of siding panels.

Note 1: Place nail 3 to 4 inches (75 to 100 mm) from edge.

Note 2: Slide notched cutout 1 inch (25 mm) under adjacent strip.

oint Details For Metal And Vinyl Siding - Allow space for expansion of siding panels.

Figure 38b - Joint Details For Metal And Vinyl Siding - Allow space for expansion of siding panels.

Note 1: Pre-molded joint-finish accessories allow for thermal movement.

Note 2: Leave 1/4 inch (5 mm) between edges of siding.

  • With diagonal siding, cut the joints perpendicular to the ground and overlap the lower strip with the upper strip as shown in Figure 39.

Diagonal Vinyl Siding

Figure 39 - Diagonal Vinyl Siding

Note 1: Cut joints vertically and use proper accessories to finish the joints.

Note 2: Vinyl siding at 45 degrees.

Note 3: Lap sheathing paper over flashing.

Note 4: Caulk sides and under sill.

 

Pre-Molded Corner Details For Aluminum, Vinyl, And Wood Siding

Figure 40a - Pre-Molded Corner Details For Aluminum, Vinyl, And Wood Siding

  • Ensure that all joints in alternate courses are staggered by at least 36 inches (900 mm).
  • Take the following precautions to ensure that corner recesses drain water away from the interior.
  • Use only pre-molded corner-piece accessories on every outside corner. Figures 40a and 40b show typical corner details as suggested by manufacturers.

Mitered Corner Details For Aluminum, Wood And Vinyl Siding

Figure 40b - Mitered Corner Details For Aluminum, Wood And Vinyl Siding

Continued.......