Leaking through stained or clear-finished timber weatherboards
Causes
Plugs missing in rusticated weatherboards
Scribers missing in bevel-back weatherboards
Joints opening due to timber movement
No cap or saddle flashings at junctions of parapet and balcony walls
Minimal jamb flange cover of aluminium windows
Junctions with other claddings and/or roof poorly detailed/constructed
Listed under: Exterior, timber and wood-based, stain, timber, cladding, walls, moisture, leaks, wall cladding, stained or clear-finished timber weatherboards
Cause
Split or cupped boards
Repair
- replace damaged boards
- a building consent will be required for repair work where the cladding has failed to meet Building Code durability and weathertightness provisions
- where it is suspected that the building may be leaking and there is a risk of damage behind the cladding engage an experienced building surveyor to report on the building
Cause
Plugs missing in rusticated weatherboards
Repair
- replace or install plugs in rusticated weatherboards
- replace damaged boards
- a building consent will be required for repair work where the cladding has failed to meet Building Code durability and weathertightness provisions
- where it is suspected that the building may be leaking and there is a risk of damage behind the cladding engage an experienced building surveyor to report on the building
Cause
Scribers missing in bevel-back weatherboards
Repair
- replace damaged boards
- replace or install scribers in bevel-back weatherboards
- a building consent will be required for repair work where the cladding has failed to meet Building Code durability and weathertightness provisions
- where it is suspected that the building may be leaking and there is a risk of damage behind the cladding engage an experienced building surveyor to report on the building
Cause
Joints opening due to timber movement
Repair
- replace damaged boards
- scrape and/or sand off loose paint; sand bare timber until the surface is sound; prime; fill joints with putty or exterior grade flexible (polyester) filler; paint with at least two coats of semi-gloss or high gloss acrylic paint
- for additional joint and mitred corner protection, after painting cover joints and corners with galvanised steel soakers (metal covers) or timber cover boards
- a building consent will be required for repair work where the cladding has failed to meet Building Code durability and weathertightness provisions
- where it is suspected that the building may be leaking and there is a risk of damage behind the cladding engage an experienced building surveyor to report on the building
Cause
Poor corner detailing
Repair
- replace damaged boards
- cover joints and corners with galvanised steel soakers (metal covers) or timber cover boards
- a building consent will be required for repair work where the cladding has failed to meet Building Code durability and weathertightness provisions
- where it is suspected that the building may be leaking and there is a risk of damage behind the cladding engage an experienced building surveyor to report on the building
Cause
No cap or saddle flashings at junctions of parapet and balcony walls
Repair
- replace damaged boards
- remove weatherboards, install flashings as required, replace weatherboards
- a building consent will be required for repair work where the cladding has failed to meet Building Code durability and weathertightness provisions
- where it is suspected that the building may be leaking and there is a risk of damage behind the cladding engage an experienced building surveyor to report on the building
Cause
Minimal jamb flange cover of aluminium windows
Repair
- replace damaged boards
- replace windows with windows that have larger jamb flanges or add facings to the existing windows
- a building consent will be required for repair work where the cladding has failed to meet Building Code durability and weathertightness provisions
- where it is suspected that the building may be leaking and there is a risk of damage behind the cladding engage an experienced building surveyor to report on the building
Cause
Junctions with other claddings and/or roof poorly detailed/constructed
Repair
- where it is suspected that the building may be leaking and there is a risk of damage behind the cladding engage a registered building surveyor to report on the building
- a building consent will be required for repair work where the cladding has failed to meet Building Code durability and weathertightness provisions