Water runs off flat roofs more slowly than it does from ______ roofs.

What is the slope of a roof often termed?

True or False: Flat roofs are always free-standing structures in domestic situations.

Which of the following is a disadvantage of flat roofs compared to pitched roofs?

Which of the following is NOT a common approach to provide the fall or slope of a flat roof?

Fill in the blank: The construction method of a timber flat roof is similar to that of timber floor joists and the means of support and restraint, and methods of strutting and decking, involve the same ________.

Which of the following is a method to provide the fall or slope of a flat roof?

What are joists laid level with, formed by fixing tapered pieces of timber to the top edge of the joists?

What are the tapered pieces of timber called that are used when the joists run parallel to the fall?

Firring strips are used to ensure that the ceiling remains level in flat roof construction.

Which method of construction ensures that the ceiling remains level?

Joists are laid level with the fall, formed by fixing ______ that reduce in size towards the fall.

This form of creating the fall is used where the joists run at right angles to the required fall.

This method of construction ensures that the ceiling remains level. What does this method of construction ensure?

What is used where the flat roof meets the abutment wall to help drain water away?

With the flat roof with sloping ceiling joists construction, how are the joists laid?

What is the disadvantage of the flat roof with sloping ceiling joists method?

What does the sloping ceiling result from in this type of construction?

Joists used to form the flat roof need to follow the same principles as those used for flooring. What must be carefully positioned to comply with building regulations?

Span tables are produced to give guidance on the sectional sizes of the timber that should be used.

The spacing between joists is the ______ allowed; we can reduce this distance to better fit with the type and size of floor covering.

Which of the following is used to anchor and restrain flat roof joists at eaves and verge?

Which of the following can be used to anchor and restrain flat roof joists at eaves and verge?

Which of the following is a type of strap used to anchor and restrain flat roof joists?

The straps should be fixed at a maximum of ____ centres in order to comply with Approved Document A of the building regulations.

Refer to the diagram of a typical joist layout for a flat roof that abuts a main house wall. Which part of the roof is labeled as 'Verge'?

Refer to the diagram of a typical joist layout for a flat roof that abuts a main house wall. The part labeled 'Eaves' is located at the ________ of the roof.

Refer to the diagram of a typical joist layout for a flat roof that abuts a main house wall. What is the function of the 'Joist' in the roof structure?

According to the diagram and text on tying-in flat roofs, what is used to hold a typical joist down to the wall plate?

According to the diagram and text on tying-in flat roofs, what is used to hold the wall plate down?

In the diagram of tying-in flat roofs, label the part that is used to hold the wall plate down.

What is used to hold down a typical joist in flat roof construction?

Fill in the blank: In flat roof construction, a typical joist is held down with a _________?

Flat roofs need to comply with which documents?

To comply with Part L, the flat roof is usually insulated in one of two ways: _______ or _______.

The terms 'warm' and 'cold' refer to the position of the insulation in relation to the structure of the roof.

Where space allows, which type of flat roof is preferred?

Condensation forms when warm, moist air meets a cold surface: as the air cools, the moisture vapour condenses into ________ which is deposited on the cold surface.

We are all familiar with condensation on the inside of glass on a cold ________.

When condensation occurs within a structure, it can cause unseen damage and, if this cycle is repeated over time, very large quantities of ________ can be deposited.

Timber will decay if it remains above what percentage of moisture content for a prolonged period of time?

When using timber in a structural application, the risk of decay due to moisture must be taken into account by the ________.

In a warm flat roof, all the insulation is above the structure (such as timber roof joists), meaning that the structure is on the ______ side of the insulation. Fill in the blank.

In a cold flat roof, the insulation is typically installed between and/or below the structure, meaning that the structure itself is ______.

What is the most effective method of providing thermal insulation for a flat roof?

As the space within the roof is kept warmer than the outside air temperature, there is no need for ventilation.

Refer to the diagram of a warm deck. What is the material placed on top of the insulation?

Refer to the diagram of a warm deck. What is installed directly above the decking to provide thermal protection?

Refer to the diagram of a warm deck. What layer is placed between the insulation and the decking to prevent moisture penetration?

Refer to the diagram of a warm deck. What is the structural layer that supports the insulation and vapour barrier?

Refer to the diagram of a warm deck. What is the name of the horizontal structure that forms the ceiling inside the building?

Refer to the diagram of a warm deck. What are the supporting members beneath the ceiling called?

Refer to the diagram of a warm deck. What is carried up to the underside of the decking to improve thermal efficiency?

Refer to the diagram of a warm deck. What is the term for the edge of the roof structure shown in the diagram?

Cold deck construction is the most common method used for thermally insulating which type of roof spaces?

Where is the thermal insulation placed in cold deck construction?

Why must the space immediately above the insulation in cold deck construction be ventilated to the outside air?

In the diagram of a Cold deck, what is placed above the insulation to allow air flow?

In the Cold deck diagram, what material is used on the topmost layer for weather protection?

In the Cold deck diagram, what is the function of the 'Decking'?

In the Cold deck diagram, what is used to prevent moisture from entering the ceiling?

In the Cold deck diagram, what is placed between the joists for thermal efficiency?

In the Cold deck diagram, what is the purpose of the 'Joist and firring'?

In the Cold deck diagram, what joins up with the wall and ceiling insulation?

In the Cold deck diagram, what is the overhanging edge of the roof called?

The projecting part of the roof past the outer wall is called the ________ overhang.

The ends of the joists are finished with ________ and soffits, providing a closure to the roof.

The side of the roof which usually runs parallel to the slope is called the ________ and is usually made from the same material as the fascia.

The verge is held in place by ________ that pass through the wall to be fixed onto the side of the joists.

When deep joists have been used in flat roof construction, what problem may arise?

Verge and eaves construction for flat roofs: The eaves overhang would require the fascia board to be a very large section board, subject to defects such as ______ and being more exposed to the weather.

What is an alternative to using a large section fascia board in flat roof construction?