Metal Clad Roof Valley Detail

Roof Type Constructions

Longstrip metal roof constructions have traditionally been categorised into various types:

Cold Roof
In which the principle thermal insulation is placed at or immediately above the ceiling, resulting in the roof covering and structural deck being substantially colder in winter than the interior of the building.

Warm Roof
In which the principle thermal insulation is placed immediately below the roof covering, resulting in the structural deck and ceiling being at a temperature close to that of the interior of the building.

(The design principles of cold and warm roofs with regard to condensation Metal Clad Roof Detailand condensation control is the main difference between the two types.)

Inverted Roofs
In which the principle thermal insulation is placed above the roof covering, resulting in the roof covering structural deck and ceiling being at a temperature close to that of the interior of the building.

Hybrid Roofs
Combining the features of two or more of the roof types described above. Examples include structural decks with high thermal insulating properties combined with additional insulation and existing roofs to which thermal insulation is added.

For further technical information please contact us.

Standard Details

  • Typical Ridge Details Open or Close

    typical ridge detail1. Separation LayerStanding Seam

    2. Weatherproof Layer Option

    3. Nailable Deck

    4. 50mm Wide Metal Clips

    5. Timber Ridge Pieces

    6. Site Fixed Metal Capping 

  • Warm Roof Construction Build Up Open or Close

    warm roof build-up detail1. Standing Seam
    2. Separation Layer
    3. Weatherproof Layer Option
    4. Nailable Deck
    5. Insulation
    6. Vapour Control Layer
    7. Fixing Trim
    8. Structural Deck
    9. Standard Eaves Trim

  • Warm Roof Construction Build Up Alternative Open or Close

    warm roof build-up detail alt1. Standing Seam
    2. Separation Layer
    3. Composite Decking
    4. Closure Trim
    5. Standard Eaves Trim
    6. Structural Framing

  • Ventilated Ridge Detail Open or Close

    ventilated ridge detail1. Vapour Control LayerStanding Seam
    2. Separation Layer
    3. Nailable Deck
    4. Breather Membrane
    5. Insulation
    6. Structural Timber Frame
    7. Minimum 50mm Air Void Above Insulation
    8. Ceiling
    9. Timber Upstands
    10. 50mm Fixing Clips
    11. 100mm Spacers at 600mm Centres
    12. 10mm Insect Mesh
    13. Packers at 600mm Centres
    14. Capping Piece
    15. Standard Trim
    16. Metal Capping

  • Verge Detail Open or Close

    verge detail1. Standing Seam
    2. Underlay
    3. Nailable Deck
    4. Metal Apron Site Formed
    5. Timber Roof Framing and Fascia
    6. Ventilation Gap for Cold Roofs in Accordance with Building Regulations

  • Valley Gutter with Welts Open or Close

    valley gutter with welts detail1. Standing Seam
    2. Nailable Deck
    3. Waterproof Membrane Liner
    4. Underlay
    5. Fixing Strip
    6. Termination of Standing Seam Joint
    7. Valley Lining

  • Eave Box Gutter Detail Open or Close

    eaves box gutter detail1. Metal Faced Fascia
    2. Vapour Check Bonded to Reverse
    3. Metal Capping Site Formed
    4. Metal Gutter Lining
    5. Standard Eaves Trim
    6. Undercloak and Welted Downstand Apron
    7. 18mm Plywood Gutter Sole and Sides
    8. Ventilation Gaps for Cold Roofs in Accordance with Building Regulations

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