Cavity Walling

What is the primary purpose of the outer leaf of a cavity wall?

• To insulate the building

• To act as the building's primary weather-resistant barrier

• To provide structural support

• To decorate the exterior of the building

Which material is NOT mentioned as a common insulation material for cavity walls?

• Cotton

• Blown-in Insulation

• Rigid Foam Boards

• Mineral Wool

What is the typical range for cavity wall thickness?

• 100mm to 150mm

• 150mm to 200mm

• 250mm to 300mm

• 350mm to 400mm

What is the purpose of weep vents in cavity walls?

• To connect the inner and outer leaves

• To provide air for insulation materials

• To allow moisture to drain out

• To allow light into the cavity

What is a disadvantage of cavity wall insulation?

• Decreases the building's structural stability

• Can lead to reduced insulation effectiveness if improperly installed

• Increases the risk of fire

• Makes the building colder in winter

What is the role of wall ties in cavity wall construction?

• To connect the inner and outer leaves

• To add decorative elements to the wall

• To prevent moisture from rising

• To insulate the cavity

Which of the following is NOT a purpose of cavity walls mentioned in the text?

• Weather Resistance

• Thermal Insulation

• Sound Insulation

• Fire Resistance

What is the first step in building a cavity wall?

• Building the Cavity

• Adding Insulation

• Constructing the Inner Leaf

• Foundation and Footings

What is the main advantage of cavity wall insulation?

• Improved Energy Efficiency

• Increased wall thickness

• Reduced construction time

• Enhanced exterior appearance

What material is used for a damp-proof course (DPC) in cavity walls?

• Metal

• Bitumen or plastic

• Wood

• Glass