What are the requirements of a roof?
A new roof (e.g. for an extension) will be required to:
- resist weather.
- resist the spread of fire from one property to another.
- be able to support loads (weights)
- provide resistance to heat loss (insulation)
- be ventilated to protect from condensation (in most cases)
- have adequate drainage.
Do you need building regs for a new roof?
Do I need building regulations approval or planning permission for re-roofing? Although planning permission for re-roofing is not typically required for straightforward residential projects, building regulations approval is usually necessary when re-roofing a dwelling.
What are the building regulations for a flat roof?
Make sure your comply with flat roof building regulations
- There must be a slope of 1:80.
- Part H of the building regulations regarding drainage state that water should drain to one or two edges.
- Waterproofing should extend up the adjacent walls at least 150mm from the roof surface.
- Cold roofs must have ventilation.
What are functional requirements of roof?
The functional requirements of a roof are:
- Strength and stability.
- Resistance to weather.
- Durability and freedom from maintenance.
- Fire safety.
- Resistance to the passage of heat.
- Resistance to the passage of sound.
- Resistance to air leakage.
- Security.
What’s the minimum pitch for a roof?
1/4:12
Smallest Roof Pitch The smallest pitch of a roof is 1/4:12, which translates to 1/4 inch rise to 12 inches of run.
What pitch Should a roof be UK?
A typical roof pitch in the UK for a traditional house will be 40°-50° but at the extreme can go up to 70° (above 70° would actually be called a wall!) Part of the choice of pitch is down to the architect and different period homes will have different pitches which are more “aesthetically pleasing” to the designer.
Does a flat roof need planning permission?
You may not require planning permission. You may not require planning permission. Get an architect or AT to advise you on planning, draw up plans of what you propose/want (you will need these for a builder anayway) and apply for a Section 5 Declaration regarding the roof.
What is standard roof sheathing thickness?
about 7/16-inch
Sheathing Thickness The typical thickness of roof sheathing is about 7/16-inch, which is just under 1/2-inch.
What type of roof assembly can be used on any type of construction?
[BF]1505.2Class A roof assemblies. Class A roof assemblies shall be permitted for use in buildings or structures of all types of construction.
What are the regulations for a flat roof?
1 There must be a slope of 1:80 2 Part H of the building regulations regarding drainage state that water should drain to one or two edges 3 Waterproofing should extend up the adjacent walls at least 150mm from the roof surface 4 Cold roofs must have ventilation 5 Warm roofs must have a VCL bonded to the deck
What are the minimum requirements for roof assemblies?
Minimum requirements for roof assemblies are found in Chapter 15 of the IBC, Chapter 9 of the IRC, and Chapter 7 of the IEBC. Fire-resistance classification requirements are based on the type of construction and the building use group.
What are the new regulations for re-roofing?
Again, the minimum standard is that BS 5534 must be met, and Construction Design and Management (CDM) regulations now apply to domestic re-roofing, which put health and safety obligations on the contractor. These are also reflected in HSG 33 (health and safety in roof work) from the HSE.
What is the Code of practice for roofing?
BS 5534:2014 – Slating and tiling for pitched roofs and vertical tiling – is a code of practice covering the design, materials, application, installation and performance of slates, tiles, shingles and shakes.